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 #3f6

The following table shows the luminosity contrast ratios for all web safe colours with a background colour of #3f6, along with the difference in brightness and the difference in colour used by the colour contrast analyser for comparison.

Luminosity Ratios with background: #3f6
Foreground Colour Sample Luminosity Contrast Ratio Difference in Brightness Difference in Colour
#000 Sample Pass Level AAA for large text15.64
Pass Level AAA for regular text
Pass 176 Fail 408
#003 Sample Pass Level AAA for large text14.92
Pass Level AAA for regular text
Pass 170 Fail 357
#006 Sample Pass Level AAA for large text13.12
Pass Level AAA for regular text
Pass 164 Fail 306
#009 Sample Pass Level AAA for large text10.71
Pass Level AAA for regular text
Pass 159 Fail 357
#00c Sample Pass Level AAA for large text8.35
Pass Level AAA for regular text
Pass 153 Fail 408
#00f Sample Pass Level AAA for large text6.40
Pass level 2 fo regular text
Pass 147 Fail 459
#030 Sample Pass Level AAA for large text10.61
Pass Level AAA for regular text
Pass 146 Fail 357
#033 Sample Pass Level AAA for large text10.28
Pass Level AAA for regular text
Pass 140 Fail 306
#036 Sample Pass Level AAA for large text9.39
Pass Level AAA for regular text
Pass 134 Fail 255
#039 Sample Pass Level AAA for large text8.09
Pass Level AAA for regular text
Pass 129 Fail 306
#03c Sample Pass Level AAA for large text6.67
Pass level 2 fo regular text
Fail 123 Fail 357
#03f Sample Pass Level AAA for large text5.36
Pass level 2 fo regular text
Fail 117 Fail 408
#060 Sample Pass Level AAA for large text5.39
Pass level 2 fo regular text
Fail 116 Fail 306
#063 Sample Pass Level AAA for large text5.30
Pass level 2 fo regular text
Fail 110 Fail 255
#066 Sample Pass Level AAA for large text5.06
Pass level 2 fo regular text
Fail 105 Fail 204
#069 Sample Pass Level AAA for large text4.65
Pass level 2 fo regular text
Fail 99 Fail 255
#06c Sample Pass Level AA for large text4.14
Fail fo regular text
Fail 93 Fail 306
#06f Sample Pass Level AA for large text3.60
Fail fo regular text
Fail 87 Fail 357
#090 Sample Fail2.81
Fail
Fail 86 Fail 255
#093 Sample Fail2.79
Fail
Fail 80 Fail 204
#096 Sample Fail2.72
Fail
Fail 75 Fail 153
#099 Sample Fail2.60
Fail
Fail 69 Fail 204
#09c Sample Fail2.43
Fail
Fail 63 Fail 255
#09f Sample Fail2.23
Fail
Fail 57 Fail 306
#0c0 Sample Fail1.62
Fail
Fail 56 Fail 204
#0c3 Sample Fail1.61
Fail
Fail 51 Fail 153
#0c6 Sample Fail1.59
Fail
Fail 45 Fail 102
#0c9 Sample Fail1.55
Fail
Fail 39 Fail 153
#0cc Sample Fail1.49
Fail
Fail 33 Fail 204
#0cf Sample Fail1.41
Fail
Fail 27 Fail 255
#0f0 Sample Fail1.02
Fail
Fail 26 Fail 153
#0f3 Sample Fail1.02
Fail
Fail 21 Fail 102
#0f6 Sample Fail1.01
Fail
Fail 15 Fail 51
#0f9 Sample Fail1.01
Fail
Fail 9 Fail 102
#0fc Sample Fail1.03
Fail
Fail 3 Fail 153
#0ff Sample Fail1.07
Fail
Fail 2 Fail 204
#300 Sample Pass Level AAA for large text13.71
Pass Level AAA for regular text
Pass 161 Fail 357
#303 Sample Pass Level AAA for large text13.16
Pass Level AAA for regular text
Pass 155 Fail 306
#306 Sample Pass Level AAA for large text11.73
Pass Level AAA for regular text
Pass 149 Fail 255
#309 Sample Pass Level AAA for large text9.77
Pass Level AAA for regular text
Pass 143 Fail 306
#30c Sample Pass Level AAA for large text7.77
Pass Level AAA for regular text
Pass 138 Fail 357
#30f Sample Pass Level AAA for large text6.05
Pass level 2 fo regular text
Pass 132 Fail 408
#330 Sample Pass Level AAA for large text9.69
Pass Level AAA for regular text
Pass 131 Fail 306
#333 Sample Pass Level AAA for large text9.41
Pass Level AAA for regular text
Fail 125 Fail 255
#336 Sample Pass Level AAA for large text8.66
Pass Level AAA for regular text
Fail 119 Fail 204
#339 Sample Pass Level AAA for large text7.54
Pass Level AAA for regular text
Fail 113 Fail 255
#33c Sample Pass Level AAA for large text6.29
Pass level 2 fo regular text
Fail 108 Fail 306
#33f Sample Pass Level AAA for large text5.11
Pass level 2 fo regular text
Fail 102 Fail 357
#360 Sample Pass Level AAA for large text5.14
Pass level 2 fo regular text
Fail 101 Fail 255
#363 Sample Pass Level AAA for large text5.06
Pass level 2 fo regular text
Fail 95 Fail 204
#366 Sample Pass Level AAA for large text4.84
Pass level 2 fo regular text
Fail 89 Fail 153
#369 Sample Pass Level AA for large text4.47
Fail fo regular text
Fail 83 Fail 204
#36c Sample Pass Level AA for large text4.00
Fail fo regular text
Fail 78 Fail 255
#36f Sample Pass Level AA for large text3.49
Fail fo regular text
Fail 72 Fail 306
#390 Sample Fail2.74
Fail
Fail 71 Fail 204
#393 Sample Fail2.72
Fail
Fail 65 Fail 153
#396 Sample Fail2.66
Fail
Fail 59 Fail 102
#399 Sample Fail2.54
Fail
Fail 54 Fail 153
#39c Sample Fail2.38
Fail
Fail 48 Fail 204
#39f Sample Fail2.19
Fail
Fail 42 Fail 255
#3c0 Sample Fail1.60
Fail
Fail 41 Fail 153
#3c3 Sample Fail1.59
Fail
Fail 35 Fail 102
#3c6 Sample Fail1.57
Fail
Fail 29 Fail 51
#3c9 Sample Fail1.53
Fail
Fail 24 Fail 102
#3cc Sample Fail1.47
Fail
Fail 18 Fail 153
#3cf Sample Fail1.39
Fail
Fail 12 Fail 204
#3f0 Sample Fail1.01
Fail
Fail 11 Fail 102
#3f3 Sample Fail1.01
Fail
Fail 5 Fail 51
#3f6 Sample Fail1.00
Fail
Fail 0 Fail 0
#3f9 Sample Fail1.02
Fail
Fail 5 Fail 51
#3fc Sample Fail1.04
Fail
Fail 11 Fail 102
#3ff Sample Fail1.08
Fail
Fail 17 Fail 153
#600 Sample Pass Level AAA for large text9.99
Pass Level AAA for regular text
Pass 146 Fail 408
#603 Sample Pass Level AAA for large text9.70
Pass Level AAA for regular text
Pass 140 Fail 357
#606 Sample Pass Level AAA for large text8.90
Pass Level AAA for regular text
Pass 134 Fail 306
#609 Sample Pass Level AAA for large text7.72
Pass Level AAA for regular text
Pass 128 Fail 357
#60c Sample Pass Level AAA for large text6.42
Pass level 2 fo regular text
Fail 122 Fail 408
#60f Sample Pass Level AAA for large text5.20
Pass level 2 fo regular text
Fail 116 Fail 459
#630 Sample Pass Level AAA for large text7.67
Pass Level AAA for regular text
Fail 116 Fail 357
#633 Sample Pass Level AAA for large text7.49
Pass Level AAA for regular text
Fail 110 Fail 306
#636 Sample Pass Level AAA for large text7.01
Pass Level AAA for regular text
Fail 104 Fail 255
#639 Sample Pass Level AAA for large text6.26
Pass level 2 fo regular text
Fail 98 Fail 306
#63c Sample Pass Level AAA for large text5.37
Pass level 2 fo regular text
Fail 92 Fail 357
#63f Sample Pass Level AA for large text4.49
Fail fo regular text
Fail 87 Fail 408
#660 Sample Pass Level AAA for large text4.51
Pass level 2 fo regular text
Fail 86 Fail 306
#663 Sample Pass Level AA for large text4.45
Fail fo regular text
Fail 80 Fail 255
#666 Sample Pass Level AA for large text4.28
Fail fo regular text
Fail 74 Fail 204
#669 Sample Pass Level AA for large text3.98
Fail fo regular text
Fail 68 Fail 255
#66c Sample Pass Level AA for large text3.61
Fail fo regular text
Fail 62 Fail 306
#66f Sample Pass Level AA for large text3.18
Fail fo regular text
Fail 57 Fail 357
#690 Sample Fail2.55
Fail
Fail 56 Fail 255
#693 Sample Fail2.53
Fail
Fail 50 Fail 204
#696 Sample Fail2.48
Fail
Fail 44 Fail 153
#699 Sample Fail2.38
Fail
Fail 38 Fail 204
#69c Sample Fail2.24
Fail
Fail 32 Fail 255
#69f Sample Fail2.07
Fail
Fail 27 Fail 306
#6c0 Sample Fail1.53
Fail
Fail 26 Fail 204
#6c3 Sample Fail1.53
Fail
Fail 20 Fail 153
#6c6 Sample Fail1.50
Fail
Fail 14 Fail 102
#6c9 Sample Fail1.47
Fail
Fail 8 Fail 153
#6cc Sample Fail1.41
Fail
Fail 3 Fail 204
#6cf Sample Fail1.34
Fail
Fail 2 Fail 255
#6f0 Sample Fail1.01
Fail
Fail 3 Fail 153
#6f3 Sample Fail1.02
Fail
Fail 9 Fail 102
#6f6 Sample Fail1.03
Fail
Fail 15 Fail 51
#6f9 Sample Fail1.04
Fail
Fail 21 Fail 102
#6fc Sample Fail1.07
Fail
Fail 26 Fail 153
#6ff Sample Fail1.11
Fail
Fail 32 Fail 204
#900 Sample Pass Level AAA for large text6.64
Pass level 2 fo regular text
Pass 130 Fail 459
#903 Sample Pass Level AAA for large text6.51
Pass level 2 fo regular text
Fail 125 Fail 408
#906 Sample Pass Level AAA for large text6.14
Pass level 2 fo regular text
Fail 119 Fail 357
#909 Sample Pass Level AAA for large text5.56
Pass level 2 fo regular text
Fail 113 Fail 408
#90c Sample Pass Level AAA for large text4.85
Pass level 2 fo regular text
Fail 107 Fail 459
#90f Sample Pass Level AA for large text4.12
Fail fo regular text
Fail 101 Pass 510
#930 Sample Pass Level AAA for large text5.53
Pass level 2 fo regular text
Fail 100 Fail 408
#933 Sample Pass Level AAA for large text5.44
Pass level 2 fo regular text
Fail 95 Fail 357
#936 Sample Pass Level AAA for large text5.18
Pass level 2 fo regular text
Fail 89 Fail 306
#939 Sample Pass Level AAA for large text4.76
Pass level 2 fo regular text
Fail 83 Fail 357
#93c Sample Pass Level AA for large text4.23
Fail fo regular text
Fail 77 Fail 408
#93f Sample Pass Level AA for large text3.66
Fail fo regular text
Fail 71 Fail 459
#960 Sample Pass Level AA for large text3.67
Fail fo regular text
Fail 70 Fail 357
#963 Sample Pass Level AA for large text3.63
Fail fo regular text
Fail 65 Fail 306
#966 Sample Pass Level AA for large text3.52
Fail fo regular text
Fail 59 Fail 255
#969 Sample Pass Level AA for large text3.32
Fail fo regular text
Fail 53 Fail 306
#96c Sample Pass Level AA for large text3.05
Fail fo regular text
Fail 47 Fail 357
#96f Sample Fail2.74
Fail
Fail 41 Fail 408
#990 Sample Fail2.26
Fail
Fail 41 Fail 306
#993 Sample Fail2.25
Fail
Fail 35 Fail 255
#996 Sample Fail2.20
Fail
Fail 29 Fail 204
#999 Sample Fail2.12
Fail
Fail 23 Fail 255
#99c Sample Fail2.01
Fail
Fail 17 Fail 306
#99f Sample Fail1.87
Fail
Fail 11 Fail 357
#9c0 Sample Fail1.42
Fail
Fail 11 Fail 255
#9c3 Sample Fail1.42
Fail
Fail 5 Fail 204
#9c6 Sample Fail1.40
Fail
Fail 0 Fail 153
#9c9 Sample Fail1.37
Fail
Fail 6 Fail 204
#9cc Sample Fail1.32
Fail
Fail 12 Fail 255
#9cf Sample Fail1.26
Fail
Fail 18 Fail 306
#9f0 Sample Fail1.07
Fail
Fail 18 Fail 204
#9f3 Sample Fail1.07
Fail
Fail 24 Fail 153
#9f6 Sample Fail1.08
Fail
Fail 30 Fail 102
#9f9 Sample Fail1.09
Fail
Fail 36 Fail 153
#9fc Sample Fail1.12
Fail
Fail 42 Fail 204
#9ff Sample Fail1.16
Fail
Fail 47 Fail 255
#c00 Sample Pass Level AA for large text4.38
Fail fo regular text
Fail 115 Pass 510
#c03 Sample Pass Level AA for large text4.33
Fail fo regular text
Fail 109 Fail 459
#c06 Sample Pass Level AA for large text4.16
Fail fo regular text
Fail 103 Fail 408
#c09 Sample Pass Level AA for large text3.88
Fail fo regular text
Fail 98 Fail 459
#c0c Sample Pass Level AA for large text3.52
Fail fo regular text
Fail 92 Pass 510
#c0f Sample Pass Level AA for large text3.12
Fail fo regular text
Fail 86 Pass 561
#c30 Sample Pass Level AA for large text3.87
Fail fo regular text
Fail 85 Fail 459
#c33 Sample Pass Level AA for large text3.82
Fail fo regular text
Fail 79 Fail 408
#c36 Sample Pass Level AA for large text3.69
Fail fo regular text
Fail 74 Fail 357
#c39 Sample Pass Level AA for large text3.47
Fail fo regular text
Fail 68 Fail 408
#c3c Sample Pass Level AA for large text3.18
Fail fo regular text
Fail 62 Fail 459
#c3f Sample Fail2.85
Fail
Fail 56 Pass 510
#c60 Sample Fail2.86
Fail
Fail 55 Fail 408
#c63 Sample Fail2.83
Fail
Fail 49 Fail 357
#c66 Sample Fail2.76
Fail
Fail 44 Fail 306
#c69 Sample Fail2.64
Fail
Fail 38 Fail 357
#c6c Sample Fail2.47
Fail
Fail 32 Fail 408
#c6f Sample Fail2.26
Fail
Fail 26 Fail 459
#c90 Sample Fail1.92
Fail
Fail 25 Fail 357
#c93 Sample Fail1.91
Fail
Fail 19 Fail 306
#c96 Sample Fail1.88
Fail
Fail 14 Fail 255
#c99 Sample Fail1.82
Fail
Fail 8 Fail 306
#c9c Sample Fail1.74
Fail
Fail 2 Fail 357
#c9f Sample Fail1.63
Fail
Fail 3 Fail 408
#cc0 Sample Fail1.28
Fail
Fail 4 Fail 306
#cc3 Sample Fail1.28
Fail
Fail 9 Fail 255
#cc6 Sample Fail1.26
Fail
Fail 15 Fail 204
#cc9 Sample Fail1.23
Fail
Fail 21 Fail 255
#ccc Sample Fail1.20
Fail
Fail 27 Fail 306
#ccf Sample Fail1.15
Fail
Fail 33 Fail 357
#cf0 Sample Fail1.14
Fail
Fail 34 Fail 255
#cf3 Sample Fail1.15
Fail
Fail 39 Fail 204
#cf6 Sample Fail1.16
Fail
Fail 45 Fail 153
#cf9 Sample Fail1.17
Fail
Fail 51 Fail 204
#cfc Sample Fail1.20
Fail
Fail 57 Fail 255
#cff Sample Fail1.24
Fail
Fail 63 Fail 306
#f00 Sample Fail2.98
Fail
Fail 100 Pass 561
#f03 Sample Fail2.95
Fail
Fail 94 Pass 510
#f06 Sample Fail2.87
Fail
Fail 88 Fail 459
#f09 Sample Fail2.74
Fail
Fail 82 Pass 510
#f0c Sample Fail2.55
Fail
Fail 77 Pass 561
#f0f Sample Fail2.34
Fail
Fail 71 Pass 612
#f30 Sample Fail2.73
Fail
Fail 70 Pass 510
#f33 Sample Fail2.71
Fail
Fail 64 Fail 459
#f36 Sample Fail2.64
Fail
Fail 58 Fail 408
#f39 Sample Fail2.53
Fail
Fail 52 Fail 459
#f3c Sample Fail2.37
Fail
Fail 47 Pass 510
#f3f Sample Fail2.18
Fail
Fail 41 Pass 561
#f60 Sample Fail2.19
Fail
Fail 40 Fail 459
#f63 Sample Fail2.17
Fail
Fail 34 Fail 408
#f66 Sample Fail2.13
Fail
Fail 28 Fail 357
#f69 Sample Fail2.05
Fail
Fail 23 Fail 408
#f6c Sample Fail1.95
Fail
Fail 17 Fail 459
#f6f Sample Fail1.82
Fail
Fail 11 Pass 510
#f90 Sample Fail1.59
Fail
Fail 10 Fail 408
#f93 Sample Fail1.59
Fail
Fail 4 Fail 357
#f96 Sample Fail1.56
Fail
Fail 1 Fail 306
#f99 Sample Fail1.52
Fail
Fail 6 Fail 357
#f9c Sample Fail1.46
Fail
Fail 12 Fail 408
#f9f Sample Fail1.39
Fail
Fail 18 Fail 459
#fc0 Sample Fail1.13
Fail
Fail 19 Fail 357
#fc3 Sample Fail1.12
Fail
Fail 25 Fail 306
#fc6 Sample Fail1.11
Fail
Fail 31 Fail 255
#fc9 Sample Fail1.09
Fail
Fail 36 Fail 306
#fcc Sample Fail1.06
Fail
Fail 42 Fail 357
#fcf Sample Fail1.02
Fail
Fail 48 Fail 408
#ff0 Sample Fail1.25
Fail
Fail 49 Fail 306
#ff3 Sample Fail1.25
Fail
Fail 55 Fail 255
#ff6 Sample Fail1.26
Fail
Fail 60 Fail 204
#ff9 Sample Fail1.28
Fail
Fail 66 Fail 255
#ffc Sample Fail1.31
Fail
Fail 72 Fail 306
#fff Sample Fail1.34
Fail
Fail 78 Fail 357

Other Background Colour Combinations

Examine luminosity contrast ratios with other web safe backround colours.