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 #00f

The following table shows the luminosity contrast ratios for all web safe colours with a background colour of #00f, along with the difference in brightness and the difference in colour used by the colour contrast analyser for comparison.

Luminosity Ratios with background: #00f
Foreground Colour Sample Luminosity Contrast Ratio Difference in Brightness Difference in Colour
#000 Sample Fail2.44
Fail
Fail 29 Fail 255
#003 Sample Fail2.33
Fail
Fail 23 Fail 204
#006 Sample Fail2.05
Fail
Fail 17 Fail 153
#009 Sample Fail1.67
Fail
Fail 11 Fail 102
#00c Sample Fail1.31
Fail
Fail 5 Fail 51
#00f Sample Fail1.00
Fail
Fail 0 Fail 0
#030 Sample Fail1.66
Fail
Fail 0 Fail 306
#033 Sample Fail1.61
Fail
Fail 6 Fail 255
#036 Sample Fail1.47
Fail
Fail 12 Fail 204
#039 Sample Fail1.26
Fail
Fail 18 Fail 153
#03c Sample Fail1.04
Fail
Fail 24 Fail 102
#03f Sample Fail1.19
Fail
Fail 29 Fail 51
#060 Sample Fail1.19
Fail
Fail 30 Fail 357
#063 Sample Fail1.21
Fail
Fail 36 Fail 306
#066 Sample Fail1.27
Fail
Fail 42 Fail 255
#069 Sample Fail1.38
Fail
Fail 48 Fail 204
#06c Sample Fail1.54
Fail
Fail 54 Fail 153
#06f Sample Fail1.78
Fail
Fail 59 Fail 102
#090 Sample Fail2.27
Fail
Fail 60 Fail 408
#093 Sample Fail2.29
Fail
Fail 66 Fail 357
#096 Sample Fail2.35
Fail
Fail 72 Fail 306
#099 Sample Fail2.46
Fail
Fail 78 Fail 255
#09c Sample Fail2.63
Fail
Fail 83 Fail 204
#09f Sample Fail2.86
Fail
Fail 89 Fail 153
#0c0 Sample Pass Level AA for large text3.94
Fail fo regular text
Fail 90 Fail 459
#0c3 Sample Pass Level AA for large text3.96
Fail fo regular text
Fail 96 Fail 408
#0c6 Sample Pass Level AA for large text4.02
Fail fo regular text
Fail 102 Fail 357
#0c9 Sample Pass Level AA for large text4.13
Fail fo regular text
Fail 108 Fail 306
#0cc Sample Pass Level AA for large text4.30
Fail fo regular text
Fail 113 Fail 255
#0cf Sample Pass Level AAA for large text4.53
Pass level 2 fo regular text
Fail 119 Fail 204
#0f0 Sample Pass Level AAA for large text6.26
Pass level 2 fo regular text
Fail 120 Pass 510
#0f3 Sample Pass Level AAA for large text6.28
Pass level 2 fo regular text
Pass 126 Fail 459
#0f6 Sample Pass Level AAA for large text6.34
Pass level 2 fo regular text
Pass 132 Fail 408
#0f9 Sample Pass Level AAA for large text6.45
Pass level 2 fo regular text
Pass 138 Fail 357
#0fc Sample Pass Level AAA for large text6.62
Pass level 2 fo regular text
Pass 143 Fail 306
#0ff Sample Pass Level AAA for large text6.85
Pass level 2 fo regular text
Pass 149 Fail 255
#300 Sample Fail2.14
Fail
Fail 13 Fail 306
#303 Sample Fail2.06
Fail
Fail 8 Fail 255
#306 Sample Fail1.83
Fail
Fail 2 Fail 204
#309 Sample Fail1.53
Fail
Fail 3 Fail 153
#30c Sample Fail1.21
Fail
Fail 9 Fail 102
#30f Sample Fail1.06
Fail
Fail 15 Fail 51
#330 Sample Fail1.51
Fail
Fail 16 Fail 357
#333 Sample Fail1.47
Fail
Fail 21 Fail 306
#336 Sample Fail1.35
Fail
Fail 27 Fail 255
#339 Sample Fail1.18
Fail
Fail 33 Fail 204
#33c Sample Fail1.02
Fail
Fail 39 Fail 153
#33f Sample Fail1.25
Fail
Fail 45 Fail 102
#360 Sample Fail1.24
Fail
Fail 46 Fail 408
#363 Sample Fail1.26
Fail
Fail 51 Fail 357
#366 Sample Fail1.32
Fail
Fail 57 Fail 306
#369 Sample Fail1.43
Fail
Fail 63 Fail 255
#36c Sample Fail1.60
Fail
Fail 69 Fail 204
#36f Sample Fail1.84
Fail
Fail 75 Fail 153
#390 Sample Fail2.33
Fail
Fail 75 Fail 459
#393 Sample Fail2.35
Fail
Fail 81 Fail 408
#396 Sample Fail2.41
Fail
Fail 87 Fail 357
#399 Sample Fail2.52
Fail
Fail 93 Fail 306
#39c Sample Fail2.69
Fail
Fail 99 Fail 255
#39f Sample Fail2.92
Fail
Fail 105 Fail 204
#3c0 Sample Pass Level AA for large text4.00
Fail fo regular text
Fail 105 Pass 510
#3c3 Sample Pass Level AA for large text4.02
Fail fo regular text
Fail 111 Fail 459
#3c6 Sample Pass Level AA for large text4.08
Fail fo regular text
Fail 117 Fail 408
#3c9 Sample Pass Level AA for large text4.19
Fail fo regular text
Fail 123 Fail 357
#3cc Sample Pass Level AA for large text4.36
Fail fo regular text
Pass 129 Fail 306
#3cf Sample Pass Level AAA for large text4.59
Pass level 2 fo regular text
Pass 134 Fail 255
#3f0 Sample Pass Level AAA for large text6.32
Pass level 2 fo regular text
Pass 135 Pass 561
#3f3 Sample Pass Level AAA for large text6.34
Pass level 2 fo regular text
Pass 141 Pass 510
#3f6 Sample Pass Level AAA for large text6.40
Pass level 2 fo regular text
Pass 147 Fail 459
#3f9 Sample Pass Level AAA for large text6.51
Pass level 2 fo regular text
Pass 153 Fail 408
#3fc Sample Pass Level AAA for large text6.68
Pass level 2 fo regular text
Pass 159 Fail 357
#3ff Sample Pass Level AAA for large text6.91
Pass level 2 fo regular text
Pass 164 Fail 306
#600 Sample Fail1.56
Fail
Fail 1 Fail 357
#603 Sample Fail1.52
Fail
Fail 7 Fail 306
#606 Sample Fail1.39
Fail
Fail 13 Fail 255
#609 Sample Fail1.21
Fail
Fail 18 Fail 204
#60c Sample Fail1.00
Fail
Fail 24 Fail 153
#60f Sample Fail1.23
Fail
Fail 30 Fail 102
#630 Sample Fail1.20
Fail
Fail 31 Fail 408
#633 Sample Fail1.17
Fail
Fail 37 Fail 357
#636 Sample Fail1.10
Fail
Fail 42 Fail 306
#639 Sample Fail1.02
Fail
Fail 48 Fail 255
#63c Sample Fail1.19
Fail
Fail 54 Fail 204
#63f Sample Fail1.42
Fail
Fail 60 Fail 153
#660 Sample Fail1.42
Fail
Fail 61 Fail 459
#663 Sample Fail1.44
Fail
Fail 67 Fail 408
#666 Sample Fail1.50
Fail
Fail 72 Fail 357
#669 Sample Fail1.61
Fail
Fail 78 Fail 306
#66c Sample Fail1.77
Fail
Fail 84 Fail 255
#66f Sample Fail2.01
Fail
Fail 90 Fail 204
#690 Sample Fail2.50
Fail
Fail 91 Pass 510
#693 Sample Fail2.52
Fail
Fail 97 Fail 459
#696 Sample Fail2.58
Fail
Fail 102 Fail 408
#699 Sample Fail2.69
Fail
Fail 108 Fail 357
#69c Sample Fail2.86
Fail
Fail 114 Fail 306
#69f Sample Pass Level AA for large text3.10
Fail fo regular text
Fail 120 Fail 255
#6c0 Sample Pass Level AA for large text4.17
Fail fo regular text
Fail 121 Pass 561
#6c3 Sample Pass Level AA for large text4.19
Fail fo regular text
Pass 126 Pass 510
#6c6 Sample Pass Level AA for large text4.25
Fail fo regular text
Pass 132 Fail 459
#6c9 Sample Pass Level AA for large text4.36
Fail fo regular text
Pass 138 Fail 408
#6cc Sample Pass Level AAA for large text4.53
Pass level 2 fo regular text
Pass 144 Fail 357
#6cf Sample Pass Level AAA for large text4.77
Pass level 2 fo regular text
Pass 150 Fail 306
#6f0 Sample Pass Level AAA for large text6.49
Pass level 2 fo regular text
Pass 151 Pass 612
#6f3 Sample Pass Level AAA for large text6.51
Pass level 2 fo regular text
Pass 156 Pass 561
#6f6 Sample Pass Level AAA for large text6.57
Pass level 2 fo regular text
Pass 162 Pass 510
#6f9 Sample Pass Level AAA for large text6.68
Pass level 2 fo regular text
Pass 168 Fail 459
#6fc Sample Pass Level AAA for large text6.85
Pass level 2 fo regular text
Pass 174 Fail 408
#6ff Sample Pass Level AAA for large text7.08
Pass Level AAA for regular text
Pass 180 Fail 357
#900 Sample Fail1.04
Fail
Fail 16 Fail 408
#903 Sample Fail1.02
Fail
Fail 22 Fail 357
#906 Sample Fail1.04
Fail
Fail 28 Fail 306
#909 Sample Fail1.15
Fail
Fail 34 Fail 255
#90c Sample Fail1.32
Fail
Fail 39 Fail 204
#90f Sample Fail1.55
Fail
Fail 45 Fail 153
#930 Sample Fail1.16
Fail
Fail 46 Fail 459
#933 Sample Fail1.18
Fail
Fail 52 Fail 408
#936 Sample Fail1.24
Fail
Fail 58 Fail 357
#939 Sample Fail1.35
Fail
Fail 64 Fail 306
#93c Sample Fail1.51
Fail
Fail 69 Fail 255
#93f Sample Fail1.75
Fail
Fail 75 Fail 204
#960 Sample Fail1.74
Fail
Fail 76 Pass 510
#963 Sample Fail1.76
Fail
Fail 82 Fail 459
#966 Sample Fail1.82
Fail
Fail 88 Fail 408
#969 Sample Fail1.93
Fail
Fail 93 Fail 357
#96c Sample Fail2.10
Fail
Fail 99 Fail 306
#96f Sample Fail2.33
Fail
Fail 105 Fail 255
#990 Sample Fail2.83
Fail
Fail 106 Pass 561
#993 Sample Fail2.85
Fail
Fail 112 Pass 510
#996 Sample Fail2.91
Fail
Fail 118 Fail 459
#999 Sample Pass Level AA for large text3.02
Fail fo regular text
Fail 123 Fail 408
#99c Sample Pass Level AA for large text3.18
Fail fo regular text
Pass 129 Fail 357
#99f Sample Pass Level AA for large text3.42
Fail fo regular text
Pass 135 Fail 306
#9c0 Sample Pass Level AA for large text4.50
Fail fo regular text
Pass 136 Pass 612
#9c3 Sample Pass Level AAA for large text4.52
Pass level 2 fo regular text
Pass 142 Pass 561
#9c6 Sample Pass Level AAA for large text4.58
Pass level 2 fo regular text
Pass 148 Pass 510
#9c9 Sample Pass Level AAA for large text4.69
Pass level 2 fo regular text
Pass 153 Fail 459
#9cc Sample Pass Level AAA for large text4.85
Pass level 2 fo regular text
Pass 159 Fail 408
#9cf Sample Pass Level AAA for large text5.09
Pass level 2 fo regular text
Pass 165 Fail 357
#9f0 Sample Pass Level AAA for large text6.82
Pass level 2 fo regular text
Pass 166 Pass 663
#9f3 Sample Pass Level AAA for large text6.84
Pass level 2 fo regular text
Pass 172 Pass 612
#9f6 Sample Pass Level AAA for large text6.89
Pass level 2 fo regular text
Pass 177 Pass 561
#9f9 Sample Pass Level AAA for large text7.00
Pass Level AAA for regular text
Pass 183 Pass 510
#9fc Sample Pass Level AAA for large text7.17
Pass Level AAA for regular text
Pass 189 Fail 459
#9ff Sample Pass Level AAA for large text7.41
Pass Level AAA for regular text
Pass 195 Fail 408
#c00 Sample Fail1.46
Fail
Fail 31 Fail 459
#c03 Sample Fail1.48
Fail
Fail 37 Fail 408
#c06 Sample Fail1.54
Fail
Fail 43 Fail 357
#c09 Sample Fail1.65
Fail
Fail 49 Fail 306
#c0c Sample Fail1.82
Fail
Fail 55 Fail 255
#c0f Sample Fail2.05
Fail
Fail 60 Fail 204
#c30 Sample Fail1.65
Fail
Fail 61 Pass 510
#c33 Sample Fail1.67
Fail
Fail 67 Fail 459
#c36 Sample Fail1.73
Fail
Fail 73 Fail 408
#c39 Sample Fail1.84
Fail
Fail 79 Fail 357
#c3c Sample Fail2.01
Fail
Fail 85 Fail 306
#c3f Sample Fail2.24
Fail
Fail 90 Fail 255
#c60 Sample Fail2.24
Fail
Fail 91 Pass 561
#c63 Sample Fail2.26
Fail
Fail 97 Pass 510
#c66 Sample Fail2.32
Fail
Fail 103 Fail 459
#c69 Sample Fail2.43
Fail
Fail 109 Fail 408
#c6c Sample Fail2.59
Fail
Fail 115 Fail 357
#c6f Sample Fail2.83
Fail
Fail 120 Fail 306
#c90 Sample Pass Level AA for large text3.32
Fail fo regular text
Fail 121 Pass 612
#c93 Sample Pass Level AA for large text3.34
Fail fo regular text
Pass 127 Pass 561
#c96 Sample Pass Level AA for large text3.40
Fail fo regular text
Pass 133 Pass 510
#c99 Sample Pass Level AA for large text3.51
Fail fo regular text
Pass 139 Fail 459
#c9c Sample Pass Level AA for large text3.68
Fail fo regular text
Pass 144 Fail 408
#c9f Sample Pass Level AA for large text3.91
Fail fo regular text
Pass 150 Fail 357
#cc0 Sample Pass Level AAA for large text4.99
Pass level 2 fo regular text
Pass 151 Pass 663
#cc3 Sample Pass Level AAA for large text5.01
Pass level 2 fo regular text
Pass 157 Pass 612
#cc6 Sample Pass Level AAA for large text5.07
Pass level 2 fo regular text
Pass 163 Pass 561
#cc9 Sample Pass Level AAA for large text5.18
Pass level 2 fo regular text
Pass 169 Pass 510
#ccc Sample Pass Level AAA for large text5.35
Pass level 2 fo regular text
Pass 174 Fail 459
#ccf Sample Pass Level AAA for large text5.58
Pass level 2 fo regular text
Pass 180 Fail 408
#cf0 Sample Pass Level AAA for large text7.31
Pass Level AAA for regular text
Pass 181 Pass 714
#cf3 Sample Pass Level AAA for large text7.33
Pass Level AAA for regular text
Pass 187 Pass 663
#cf6 Sample Pass Level AAA for large text7.39
Pass Level AAA for regular text
Pass 193 Pass 612
#cf9 Sample Pass Level AAA for large text7.50
Pass Level AAA for regular text
Pass 199 Pass 561
#cfc Sample Pass Level AAA for large text7.67
Pass Level AAA for regular text
Pass 204 Pass 510
#cff Sample Pass Level AAA for large text7.90
Pass Level AAA for regular text
Pass 210 Fail 459
#f00 Sample Fail2.15
Fail
Fail 47 Pass 510
#f03 Sample Fail2.17
Fail
Fail 52 Fail 459
#f06 Sample Fail2.23
Fail
Fail 58 Fail 408
#f09 Sample Fail2.34
Fail
Fail 64 Fail 357
#f0c Sample Fail2.51
Fail
Fail 70 Fail 306
#f0f Sample Fail2.74
Fail
Fail 76 Fail 255
#f30 Sample Fail2.34
Fail
Fail 77 Pass 561
#f33 Sample Fail2.36
Fail
Fail 82 Pass 510
#f36 Sample Fail2.42
Fail
Fail 88 Fail 459
#f39 Sample Fail2.53
Fail
Fail 94 Fail 408
#f3c Sample Fail2.70
Fail
Fail 100 Fail 357
#f3f Sample Fail2.93
Fail
Fail 106 Fail 306
#f60 Sample Fail2.93
Fail
Fail 107 Pass 612
#f63 Sample Fail2.95
Fail
Fail 112 Pass 561
#f66 Sample Pass Level AA for large text3.01
Fail fo regular text
Fail 118 Pass 510
#f69 Sample Pass Level AA for large text3.11
Fail fo regular text
Fail 124 Fail 459
#f6c Sample Pass Level AA for large text3.28
Fail fo regular text
Pass 130 Fail 408
#f6f Sample Pass Level AA for large text3.52
Fail fo regular text
Pass 136 Fail 357
#f90 Sample Pass Level AA for large text4.01
Fail fo regular text
Pass 136 Pass 663
#f93 Sample Pass Level AA for large text4.03
Fail fo regular text
Pass 142 Pass 612
#f96 Sample Pass Level AA for large text4.09
Fail fo regular text
Pass 148 Pass 561
#f99 Sample Pass Level AA for large text4.20
Fail fo regular text
Pass 154 Pass 510
#f9c Sample Pass Level AA for large text4.37
Fail fo regular text
Pass 160 Fail 459
#f9f Sample Pass Level AAA for large text4.60
Pass level 2 fo regular text
Pass 166 Fail 408
#fc0 Sample Pass Level AAA for large text5.68
Pass level 2 fo regular text
Pass 166 Pass 714
#fc3 Sample Pass Level AAA for large text5.70
Pass level 2 fo regular text
Pass 172 Pass 663
#fc6 Sample Pass Level AAA for large text5.76
Pass level 2 fo regular text
Pass 178 Pass 612
#fc9 Sample Pass Level AAA for large text5.87
Pass level 2 fo regular text
Pass 184 Pass 561
#fcc Sample Pass Level AAA for large text6.04
Pass level 2 fo regular text
Pass 190 Pass 510
#fcf Sample Pass Level AAA for large text6.27
Pass level 2 fo regular text
Pass 195 Fail 459
#ff0 Sample Pass Level AAA for large text8.00
Pass Level AAA for regular text
Pass 196 Pass 765
#ff3 Sample Pass Level AAA for large text8.02
Pass Level AAA for regular text
Pass 202 Pass 714
#ff6 Sample Pass Level AAA for large text8.08
Pass Level AAA for regular text
Pass 208 Pass 663
#ff9 Sample Pass Level AAA for large text8.19
Pass Level AAA for regular text
Pass 214 Pass 612
#ffc Sample Pass Level AAA for large text8.36
Pass Level AAA for regular text
Pass 220 Pass 561
#fff Sample Pass Level AAA for large text8.59
Pass Level AAA for regular text
Pass 225 Pass 510

Other Background Colour Combinations

Examine luminosity contrast ratios with other web safe backround colours.