Contents

Introduction

The purpose of this page is to display luminosity contrast ratios for all web safe colours against a web safe background colour. The results are shown in a table that also includes the difference in brightness, and the difference in colour that are used by the colour contrast analyser for comparison. To test the luminosity contrast ratio for any colour combination, use the luminosity contrast ratio analyser.

The following icons are used in the results to indicate whether or not the result of a calculation is a pass.

Key for the Icons
Icon Meaning
Fail Indicates the value shown is a failure.
Pass Indicates the value shown is a pass.
Level AA Indicates that the luminosity contrast ratio is a level AA pass for large text (at least 18 point or 14 point bold)
Level AAA Indicates that the luminosity contrast ratio is a level AAA pass for large text (at least 18 point or 14 point bold)
Level AA Indicates that the luminosity contrast ratio is a level AA pass for regular text.
Level AAA Indicates that the luminosity contrast ratio is a level AAA pass for regular text.

Luminosity Contrast Ratios for #303

The following table shows the luminosity contrast ratios for all web safe colours with a background colour of #303, along with the difference in brightness and the difference in colour used by the colour contrast analyser for comparison.

Luminosity Ratios with background: #303
Foreground Colour Sample Luminosity Contrast Ratio Difference in Brightness Difference in Colour
#000 Sample Fail1.19
Fail
Fail 21 Fail 102
#003 Sample Fail1.13
Fail
Fail 15 Fail 51
#006 Sample Fail1.00
Fail
Fail 9 Fail 102
#009 Sample Fail1.23
Fail
Fail 3 Fail 153
#00c Sample Fail1.57
Fail
Fail 2 Fail 204
#00f Sample Fail2.06
Fail
Fail 8 Fail 255
#030 Sample Fail1.24
Fail
Fail 8 Fail 153
#033 Sample Fail1.28
Fail
Fail 14 Fail 102
#036 Sample Fail1.40
Fail
Fail 20 Fail 153
#039 Sample Fail1.63
Fail
Fail 26 Fail 204
#03c Sample Fail1.97
Fail
Fail 32 Fail 255
#03f Sample Fail2.45
Fail
Fail 37 Fail 306
#060 Sample Fail2.44
Fail
Fail 38 Fail 204
#063 Sample Fail2.48
Fail
Fail 44 Fail 153
#066 Sample Fail2.60
Fail
Fail 50 Fail 204
#069 Sample Fail2.83
Fail
Fail 56 Fail 255
#06c Sample Pass Level AA for large text3.17
Fail fo regular text
Fail 62 Fail 306
#06f Sample Pass Level AA for large text3.66
Fail fo regular text
Fail 67 Fail 357
#090 Sample Pass Level AAA for large text4.67
Pass level 2 fo regular text
Fail 68 Fail 255
#093 Sample Pass Level AAA for large text4.72
Pass level 2 fo regular text
Fail 74 Fail 204
#096 Sample Pass Level AAA for large text4.84
Pass level 2 fo regular text
Fail 80 Fail 255
#099 Sample Pass Level AAA for large text5.06
Pass level 2 fo regular text
Fail 86 Fail 306
#09c Sample Pass Level AAA for large text5.41
Pass level 2 fo regular text
Fail 92 Fail 357
#09f Sample Pass Level AAA for large text5.89
Pass level 2 fo regular text
Fail 97 Fail 408
#0c0 Sample Pass Level AAA for large text8.11
Pass Level AAA for regular text
Fail 98 Fail 306
#0c3 Sample Pass Level AAA for large text8.15
Pass Level AAA for regular text
Fail 104 Fail 255
#0c6 Sample Pass Level AAA for large text8.27
Pass Level AAA for regular text
Fail 110 Fail 306
#0c9 Sample Pass Level AAA for large text8.50
Pass Level AAA for regular text
Fail 116 Fail 357
#0cc Sample Pass Level AAA for large text8.84
Pass Level AAA for regular text
Fail 121 Fail 408
#0cf Sample Pass Level AAA for large text9.32
Pass Level AAA for regular text
Pass 127 Fail 459
#0f0 Sample Pass Level AAA for large text12.88
Pass Level AAA for regular text
Pass 128 Fail 357
#0f3 Sample Pass Level AAA for large text12.92
Pass Level AAA for regular text
Pass 134 Fail 306
#0f6 Sample Pass Level AAA for large text13.04
Pass Level AAA for regular text
Pass 140 Fail 357
#0f9 Sample Pass Level AAA for large text13.26
Pass Level AAA for regular text
Pass 146 Fail 408
#0fc Sample Pass Level AAA for large text13.61
Pass Level AAA for regular text
Pass 151 Fail 459
#0ff Sample Pass Level AAA for large text14.09
Pass Level AAA for regular text
Pass 157 Pass 510
#300 Sample Fail1.04
Fail
Fail 5 Fail 51
#303 Sample Fail1.00
Fail
Fail 0 Fail 0
#306 Sample Fail1.12
Fail
Fail 5 Fail 51
#309 Sample Fail1.35
Fail
Fail 11 Fail 102
#30c Sample Fail1.69
Fail
Fail 17 Fail 153
#30f Sample Fail2.17
Fail
Fail 23 Fail 204
#330 Sample Fail1.36
Fail
Fail 24 Fail 102
#333 Sample Fail1.40
Fail
Fail 29 Fail 51
#336 Sample Fail1.52
Fail
Fail 35 Fail 102
#339 Sample Fail1.75
Fail
Fail 41 Fail 153
#33c Sample Fail2.09
Fail
Fail 47 Fail 204
#33f Sample Fail2.57
Fail
Fail 53 Fail 255
#360 Sample Fail2.56
Fail
Fail 54 Fail 153
#363 Sample Fail2.60
Fail
Fail 59 Fail 102
#366 Sample Fail2.72
Fail
Fail 65 Fail 153
#369 Sample Fail2.95
Fail
Fail 71 Fail 204
#36c Sample Pass Level AA for large text3.29
Fail fo regular text
Fail 77 Fail 255
#36f Sample Pass Level AA for large text3.77
Fail fo regular text
Fail 83 Fail 306
#390 Sample Pass Level AAA for large text4.79
Pass level 2 fo regular text
Fail 83 Fail 204
#393 Sample Pass Level AAA for large text4.83
Pass level 2 fo regular text
Fail 89 Fail 153
#396 Sample Pass Level AAA for large text4.95
Pass level 2 fo regular text
Fail 95 Fail 204
#399 Sample Pass Level AAA for large text5.18
Pass level 2 fo regular text
Fail 101 Fail 255
#39c Sample Pass Level AAA for large text5.53
Pass level 2 fo regular text
Fail 107 Fail 306
#39f Sample Pass Level AAA for large text6.01
Pass level 2 fo regular text
Fail 113 Fail 357
#3c0 Sample Pass Level AAA for large text8.23
Pass Level AAA for regular text
Fail 113 Fail 255
#3c3 Sample Pass Level AAA for large text8.27
Pass Level AAA for regular text
Fail 119 Fail 204
#3c6 Sample Pass Level AAA for large text8.39
Pass Level AAA for regular text
Fail 125 Fail 255
#3c9 Sample Pass Level AAA for large text8.61
Pass Level AAA for regular text
Pass 131 Fail 306
#3cc Sample Pass Level AAA for large text8.96
Pass Level AAA for regular text
Pass 137 Fail 357
#3cf Sample Pass Level AAA for large text9.44
Pass Level AAA for regular text
Pass 143 Fail 408
#3f0 Sample Pass Level AAA for large text12.99
Pass Level AAA for regular text
Pass 143 Fail 306
#3f3 Sample Pass Level AAA for large text13.03
Pass Level AAA for regular text
Pass 149 Fail 255
#3f6 Sample Pass Level AAA for large text13.16
Pass Level AAA for regular text
Pass 155 Fail 306
#3f9 Sample Pass Level AAA for large text13.38
Pass Level AAA for regular text
Pass 161 Fail 357
#3fc Sample Pass Level AAA for large text13.73
Pass Level AAA for regular text
Pass 167 Fail 408
#3ff Sample Pass Level AAA for large text14.21
Pass Level AAA for regular text
Pass 172 Fail 459
#600 Sample Fail1.32
Fail
Fail 9 Fail 102
#603 Sample Fail1.36
Fail
Fail 15 Fail 51
#606 Sample Fail1.48
Fail
Fail 21 Fail 102
#609 Sample Fail1.70
Fail
Fail 26 Fail 153
#60c Sample Fail2.05
Fail
Fail 32 Fail 204
#60f Sample Fail2.53
Fail
Fail 38 Fail 255
#630 Sample Fail1.72
Fail
Fail 39 Fail 153
#633 Sample Fail1.76
Fail
Fail 45 Fail 102
#636 Sample Fail1.88
Fail
Fail 51 Fail 153
#639 Sample Fail2.10
Fail
Fail 56 Fail 204
#63c Sample Fail2.45
Fail
Fail 62 Fail 255
#63f Sample Fail2.93
Fail
Fail 68 Fail 306
#660 Sample Fail2.92
Fail
Fail 69 Fail 204
#663 Sample Fail2.96
Fail
Fail 75 Fail 153
#666 Sample Pass Level AA for large text3.08
Fail fo regular text
Fail 80 Fail 204
#669 Sample Pass Level AA for large text3.30
Fail fo regular text
Fail 86 Fail 255
#66c Sample Pass Level AA for large text3.65
Fail fo regular text
Fail 92 Fail 306
#66f Sample Pass Level AA for large text4.13
Fail fo regular text
Fail 98 Fail 357
#690 Sample Pass Level AAA for large text5.15
Pass level 2 fo regular text
Fail 99 Fail 255
#693 Sample Pass Level AAA for large text5.19
Pass level 2 fo regular text
Fail 105 Fail 204
#696 Sample Pass Level AAA for large text5.31
Pass level 2 fo regular text
Fail 110 Fail 255
#699 Sample Pass Level AAA for large text5.54
Pass level 2 fo regular text
Fail 116 Fail 306
#69c Sample Pass Level AAA for large text5.88
Pass level 2 fo regular text
Fail 122 Fail 357
#69f Sample Pass Level AAA for large text6.37
Pass level 2 fo regular text
Pass 128 Fail 408
#6c0 Sample Pass Level AAA for large text8.58
Pass Level AAA for regular text
Pass 129 Fail 306
#6c3 Sample Pass Level AAA for large text8.62
Pass Level AAA for regular text
Pass 134 Fail 255
#6c6 Sample Pass Level AAA for large text8.74
Pass Level AAA for regular text
Pass 140 Fail 306
#6c9 Sample Pass Level AAA for large text8.97
Pass Level AAA for regular text
Pass 146 Fail 357
#6cc Sample Pass Level AAA for large text9.32
Pass Level AAA for regular text
Pass 152 Fail 408
#6cf Sample Pass Level AAA for large text9.80
Pass Level AAA for regular text
Pass 158 Fail 459
#6f0 Sample Pass Level AAA for large text13.35
Pass Level AAA for regular text
Pass 159 Fail 357
#6f3 Sample Pass Level AAA for large text13.39
Pass Level AAA for regular text
Pass 164 Fail 306
#6f6 Sample Pass Level AAA for large text13.51
Pass Level AAA for regular text
Pass 170 Fail 357
#6f9 Sample Pass Level AAA for large text13.74
Pass Level AAA for regular text
Pass 176 Fail 408
#6fc Sample Pass Level AAA for large text14.08
Pass Level AAA for regular text
Pass 182 Fail 459
#6ff Sample Pass Level AAA for large text14.57
Pass Level AAA for regular text
Pass 188 Pass 510
#900 Sample Fail1.98
Fail
Fail 24 Fail 153
#903 Sample Fail2.02
Fail
Fail 30 Fail 102
#906 Sample Fail2.14
Fail
Fail 36 Fail 153
#909 Sample Fail2.37
Fail
Fail 42 Fail 204
#90c Sample Fail2.71
Fail
Fail 47 Fail 255
#90f Sample Pass Level AA for large text3.20
Fail fo regular text
Fail 53 Fail 306
#930 Sample Fail2.38
Fail
Fail 54 Fail 204
#933 Sample Fail2.42
Fail
Fail 60 Fail 153
#936 Sample Fail2.54
Fail
Fail 66 Fail 204
#939 Sample Fail2.77
Fail
Fail 72 Fail 255
#93c Sample Pass Level AA for large text3.11
Fail fo regular text
Fail 77 Fail 306
#93f Sample Pass Level AA for large text3.59
Fail fo regular text
Fail 83 Fail 357
#960 Sample Pass Level AA for large text3.58
Fail fo regular text
Fail 84 Fail 255
#963 Sample Pass Level AA for large text3.62
Fail fo regular text
Fail 90 Fail 204
#966 Sample Pass Level AA for large text3.74
Fail fo regular text
Fail 96 Fail 255
#969 Sample Pass Level AA for large text3.97
Fail fo regular text
Fail 102 Fail 306
#96c Sample Pass Level AA for large text4.31
Fail fo regular text
Fail 107 Fail 357
#96f Sample Pass Level AAA for large text4.79
Pass level 2 fo regular text
Fail 113 Fail 408
#990 Sample Pass Level AAA for large text5.81
Pass level 2 fo regular text
Fail 114 Fail 306
#993 Sample Pass Level AAA for large text5.85
Pass level 2 fo regular text
Fail 120 Fail 255
#996 Sample Pass Level AAA for large text5.98
Pass level 2 fo regular text
Pass 126 Fail 306
#999 Sample Pass Level AAA for large text6.20
Pass level 2 fo regular text
Pass 131 Fail 357
#99c Sample Pass Level AAA for large text6.55
Pass level 2 fo regular text
Pass 137 Fail 408
#99f Sample Pass Level AAA for large text7.03
Pass Level AAA for regular text
Pass 143 Fail 459
#9c0 Sample Pass Level AAA for large text9.25
Pass Level AAA for regular text
Pass 144 Fail 357
#9c3 Sample Pass Level AAA for large text9.29
Pass Level AAA for regular text
Pass 150 Fail 306
#9c6 Sample Pass Level AAA for large text9.41
Pass Level AAA for regular text
Pass 156 Fail 357
#9c9 Sample Pass Level AAA for large text9.63
Pass Level AAA for regular text
Pass 161 Fail 408
#9cc Sample Pass Level AAA for large text9.98
Pass Level AAA for regular text
Pass 167 Fail 459
#9cf Sample Pass Level AAA for large text10.46
Pass Level AAA for regular text
Pass 173 Pass 510
#9f0 Sample Pass Level AAA for large text14.02
Pass Level AAA for regular text
Pass 174 Fail 408
#9f3 Sample Pass Level AAA for large text14.06
Pass Level AAA for regular text
Pass 180 Fail 357
#9f6 Sample Pass Level AAA for large text14.18
Pass Level AAA for regular text
Pass 185 Fail 408
#9f9 Sample Pass Level AAA for large text14.40
Pass Level AAA for regular text
Pass 191 Fail 459
#9fc Sample Pass Level AAA for large text14.75
Pass Level AAA for regular text
Pass 197 Pass 510
#9ff Sample Pass Level AAA for large text15.23
Pass Level AAA for regular text
Pass 203 Pass 561
#c00 Sample Pass Level AA for large text3.00
Fail fo regular text
Fail 39 Fail 204
#c03 Sample Pass Level AA for large text3.04
Fail fo regular text
Fail 45 Fail 153
#c06 Sample Pass Level AA for large text3.16
Fail fo regular text
Fail 51 Fail 204
#c09 Sample Pass Level AA for large text3.39
Fail fo regular text
Fail 57 Fail 255
#c0c Sample Pass Level AA for large text3.74
Fail fo regular text
Fail 63 Fail 306
#c0f Sample Pass Level AA for large text4.22
Fail fo regular text
Fail 69 Fail 357
#c30 Sample Pass Level AA for large text3.40
Fail fo regular text
Fail 69 Fail 255
#c33 Sample Pass Level AA for large text3.44
Fail fo regular text
Fail 75 Fail 204
#c36 Sample Pass Level AA for large text3.56
Fail fo regular text
Fail 81 Fail 255
#c39 Sample Pass Level AA for large text3.79
Fail fo regular text
Fail 87 Fail 306
#c3c Sample Pass Level AA for large text4.13
Fail fo regular text
Fail 93 Fail 357
#c3f Sample Pass Level AAA for large text4.61
Pass level 2 fo regular text
Fail 98 Fail 408
#c60 Sample Pass Level AAA for large text4.60
Pass level 2 fo regular text
Fail 99 Fail 306
#c63 Sample Pass Level AAA for large text4.64
Pass level 2 fo regular text
Fail 105 Fail 255
#c66 Sample Pass Level AAA for large text4.76
Pass level 2 fo regular text
Fail 111 Fail 306
#c69 Sample Pass Level AAA for large text4.99
Pass level 2 fo regular text
Fail 117 Fail 357
#c6c Sample Pass Level AAA for large text5.33
Pass level 2 fo regular text
Fail 123 Fail 408
#c6f Sample Pass Level AAA for large text5.82
Pass level 2 fo regular text
Pass 128 Fail 459
#c90 Sample Pass Level AAA for large text6.84
Pass level 2 fo regular text
Pass 129 Fail 357
#c93 Sample Pass Level AAA for large text6.88
Pass level 2 fo regular text
Pass 135 Fail 306
#c96 Sample Pass Level AAA for large text7.00
Pass level 2 fo regular text
Pass 141 Fail 357
#c99 Sample Pass Level AAA for large text7.22
Pass Level AAA for regular text
Pass 147 Fail 408
#c9c Sample Pass Level AAA for large text7.57
Pass Level AAA for regular text
Pass 153 Fail 459
#c9f Sample Pass Level AAA for large text8.05
Pass Level AAA for regular text
Pass 158 Pass 510
#cc0 Sample Pass Level AAA for large text10.27
Pass Level AAA for regular text
Pass 159 Fail 408
#cc3 Sample Pass Level AAA for large text10.31
Pass Level AAA for regular text
Pass 165 Fail 357
#cc6 Sample Pass Level AAA for large text10.43
Pass Level AAA for regular text
Pass 171 Fail 408
#cc9 Sample Pass Level AAA for large text10.66
Pass Level AAA for regular text
Pass 177 Fail 459
#ccc Sample Pass Level AAA for large text11.00
Pass Level AAA for regular text
Pass 182 Pass 510
#ccf Sample Pass Level AAA for large text11.48
Pass Level AAA for regular text
Pass 188 Pass 561
#cf0 Sample Pass Level AAA for large text15.04
Pass Level AAA for regular text
Pass 189 Fail 459
#cf3 Sample Pass Level AAA for large text15.08
Pass Level AAA for regular text
Pass 195 Fail 408
#cf6 Sample Pass Level AAA for large text15.20
Pass Level AAA for regular text
Pass 201 Fail 459
#cf9 Sample Pass Level AAA for large text15.42
Pass Level AAA for regular text
Pass 207 Pass 510
#cfc Sample Pass Level AAA for large text15.77
Pass Level AAA for regular text
Pass 212 Pass 561
#cff Sample Pass Level AAA for large text16.25
Pass Level AAA for regular text
Pass 218 Pass 612
#f00 Sample Pass Level AA for large text4.42
Fail fo regular text
Fail 55 Fail 255
#f03 Sample Pass Level AA for large text4.46
Fail fo regular text
Fail 60 Fail 204
#f06 Sample Pass Level AAA for large text4.58
Pass level 2 fo regular text
Fail 66 Fail 255
#f09 Sample Pass Level AAA for large text4.81
Pass level 2 fo regular text
Fail 72 Fail 306
#f0c Sample Pass Level AAA for large text5.15
Pass level 2 fo regular text
Fail 78 Fail 357
#f0f Sample Pass Level AAA for large text5.63
Pass level 2 fo regular text
Fail 84 Fail 408
#f30 Sample Pass Level AAA for large text4.82
Pass level 2 fo regular text
Fail 85 Fail 306
#f33 Sample Pass Level AAA for large text4.86
Pass level 2 fo regular text
Fail 90 Fail 255
#f36 Sample Pass Level AAA for large text4.98
Pass level 2 fo regular text
Fail 96 Fail 306
#f39 Sample Pass Level AAA for large text5.20
Pass level 2 fo regular text
Fail 102 Fail 357
#f3c Sample Pass Level AAA for large text5.55
Pass level 2 fo regular text
Fail 108 Fail 408
#f3f Sample Pass Level AAA for large text6.03
Pass level 2 fo regular text
Fail 114 Fail 459
#f60 Sample Pass Level AAA for large text6.02
Pass level 2 fo regular text
Fail 115 Fail 357
#f63 Sample Pass Level AAA for large text6.06
Pass level 2 fo regular text
Fail 120 Fail 306
#f66 Sample Pass Level AAA for large text6.18
Pass level 2 fo regular text
Pass 126 Fail 357
#f69 Sample Pass Level AAA for large text6.40
Pass level 2 fo regular text
Pass 132 Fail 408
#f6c Sample Pass Level AAA for large text6.75
Pass level 2 fo regular text
Pass 138 Fail 459
#f6f Sample Pass Level AAA for large text7.23
Pass Level AAA for regular text
Pass 144 Pass 510
#f90 Sample Pass Level AAA for large text8.25
Pass Level AAA for regular text
Pass 144 Fail 408
#f93 Sample Pass Level AAA for large text8.29
Pass Level AAA for regular text
Pass 150 Fail 357
#f96 Sample Pass Level AAA for large text8.41
Pass Level AAA for regular text
Pass 156 Fail 408
#f99 Sample Pass Level AAA for large text8.64
Pass Level AAA for regular text
Pass 162 Fail 459
#f9c Sample Pass Level AAA for large text8.99
Pass Level AAA for regular text
Pass 168 Pass 510
#f9f Sample Pass Level AAA for large text9.47
Pass Level AAA for regular text
Pass 174 Pass 561
#fc0 Sample Pass Level AAA for large text11.69
Pass Level AAA for regular text
Pass 174 Fail 459
#fc3 Sample Pass Level AAA for large text11.73
Pass Level AAA for regular text
Pass 180 Fail 408
#fc6 Sample Pass Level AAA for large text11.85
Pass Level AAA for regular text
Pass 186 Fail 459
#fc9 Sample Pass Level AAA for large text12.07
Pass Level AAA for regular text
Pass 192 Pass 510
#fcc Sample Pass Level AAA for large text12.42
Pass Level AAA for regular text
Pass 198 Pass 561
#fcf Sample Pass Level AAA for large text12.90
Pass Level AAA for regular text
Pass 204 Pass 612
#ff0 Sample Pass Level AAA for large text16.45
Pass Level AAA for regular text
Pass 204 Pass 510
#ff3 Sample Pass Level AAA for large text16.49
Pass Level AAA for regular text
Pass 210 Fail 459
#ff6 Sample Pass Level AAA for large text16.61
Pass Level AAA for regular text
Pass 216 Pass 510
#ff9 Sample Pass Level AAA for large text16.84
Pass Level AAA for regular text
Pass 222 Pass 561
#ffc Sample Pass Level AAA for large text17.19
Pass Level AAA for regular text
Pass 228 Pass 612
#fff Sample Pass Level AAA for large text17.67
Pass Level AAA for regular text
Pass 233 Pass 663

Other Background Colour Combinations

Examine luminosity contrast ratios with other web safe backround colours.