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 #c0f

The following table shows the luminosity contrast ratios for all web safe colours with a background colour of #c0f, along with the difference in brightness and the difference in colour used by the colour contrast analyser for comparison.

Luminosity Ratios with background: #c0f
Foreground Colour Sample Luminosity Contrast Ratio Difference in Brightness Difference in Colour
#000 Sample Pass Level AAA for large text5.01
Pass level 2 fo regular text
Fail 90 Fail 459
#003 Sample Pass Level AAA for large text4.78
Pass level 2 fo regular text
Fail 84 Fail 408
#006 Sample Pass Level AA for large text4.20
Fail fo regular text
Fail 78 Fail 357
#009 Sample Pass Level AA for large text3.43
Fail fo regular text
Fail 72 Fail 306
#00c Sample Fail2.68
Fail
Fail 66 Fail 255
#00f Sample Fail2.05
Fail
Fail 60 Fail 204
#030 Sample Pass Level AA for large text3.40
Fail fo regular text
Fail 60 Pass 510
#033 Sample Pass Level AA for large text3.29
Fail fo regular text
Fail 54 Fail 459
#036 Sample Pass Level AA for large text3.01
Fail fo regular text
Fail 48 Fail 408
#039 Sample Fail2.59
Fail
Fail 42 Fail 357
#03c Sample Fail2.14
Fail
Fail 36 Fail 306
#03f Sample Fail1.72
Fail
Fail 31 Fail 255
#060 Sample Fail1.73
Fail
Fail 30 Pass 561
#063 Sample Fail1.70
Fail
Fail 24 Pass 510
#066 Sample Fail1.62
Fail
Fail 18 Fail 459
#069 Sample Fail1.49
Fail
Fail 12 Fail 408
#06c Sample Fail1.33
Fail
Fail 6 Fail 357
#06f Sample Fail1.15
Fail
Fail 1 Fail 306
#090 Sample Fail1.11
Fail
Fail 0 Pass 612
#093 Sample Fail1.12
Fail
Fail 5 Pass 561
#096 Sample Fail1.15
Fail
Fail 11 Pass 510
#099 Sample Fail1.20
Fail
Fail 17 Fail 459
#09c Sample Fail1.28
Fail
Fail 23 Fail 408
#09f Sample Fail1.40
Fail
Fail 28 Fail 357
#0c0 Sample Fail1.92
Fail
Fail 29 Pass 663
#0c3 Sample Fail1.93
Fail
Fail 35 Pass 612
#0c6 Sample Fail1.96
Fail
Fail 41 Pass 561
#0c9 Sample Fail2.01
Fail
Fail 47 Pass 510
#0cc Sample Fail2.10
Fail
Fail 52 Fail 459
#0cf Sample Fail2.21
Fail
Fail 58 Fail 408
#0f0 Sample Pass Level AA for large text3.05
Fail fo regular text
Fail 59 Pass 714
#0f3 Sample Pass Level AA for large text3.06
Fail fo regular text
Fail 65 Pass 663
#0f6 Sample Pass Level AA for large text3.09
Fail fo regular text
Fail 71 Pass 612
#0f9 Sample Pass Level AA for large text3.15
Fail fo regular text
Fail 77 Pass 561
#0fc Sample Pass Level AA for large text3.23
Fail fo regular text
Fail 82 Pass 510
#0ff Sample Pass Level AA for large text3.34
Fail fo regular text
Fail 88 Fail 459
#300 Sample Pass Level AA for large text4.39
Fail fo regular text
Fail 74 Fail 408
#303 Sample Pass Level AA for large text4.22
Fail fo regular text
Fail 69 Fail 357
#306 Sample Pass Level AA for large text3.76
Fail fo regular text
Fail 63 Fail 306
#309 Sample Pass Level AA for large text3.13
Fail fo regular text
Fail 57 Fail 255
#30c Sample Fail2.49
Fail
Fail 51 Fail 204
#30f Sample Fail1.94
Fail
Fail 45 Fail 153
#330 Sample Pass Level AA for large text3.10
Fail fo regular text
Fail 44 Fail 459
#333 Sample Pass Level AA for large text3.02
Fail fo regular text
Fail 39 Fail 408
#336 Sample Fail2.77
Fail
Fail 33 Fail 357
#339 Sample Fail2.42
Fail
Fail 27 Fail 306
#33c Sample Fail2.02
Fail
Fail 21 Fail 255
#33f Sample Fail1.64
Fail
Fail 15 Fail 204
#360 Sample Fail1.65
Fail
Fail 14 Pass 510
#363 Sample Fail1.62
Fail
Fail 9 Fail 459
#366 Sample Fail1.55
Fail
Fail 3 Fail 408
#369 Sample Fail1.43
Fail
Fail 2 Fail 357
#36c Sample Fail1.28
Fail
Fail 8 Fail 306
#36f Sample Fail1.12
Fail
Fail 14 Fail 255
#390 Sample Fail1.14
Fail
Fail 14 Pass 561
#393 Sample Fail1.15
Fail
Fail 20 Pass 510
#396 Sample Fail1.18
Fail
Fail 26 Fail 459
#399 Sample Fail1.23
Fail
Fail 32 Fail 408
#39c Sample Fail1.31
Fail
Fail 38 Fail 357
#39f Sample Fail1.42
Fail
Fail 44 Fail 306
#3c0 Sample Fail1.95
Fail
Fail 44 Pass 612
#3c3 Sample Fail1.96
Fail
Fail 50 Pass 561
#3c6 Sample Fail1.99
Fail
Fail 56 Pass 510
#3c9 Sample Fail2.04
Fail
Fail 62 Fail 459
#3cc Sample Fail2.13
Fail
Fail 68 Fail 408
#3cf Sample Fail2.24
Fail
Fail 74 Fail 357
#3f0 Sample Pass Level AA for large text3.08
Fail fo regular text
Fail 74 Pass 663
#3f3 Sample Pass Level AA for large text3.09
Fail fo regular text
Fail 80 Pass 612
#3f6 Sample Pass Level AA for large text3.12
Fail fo regular text
Fail 86 Pass 561
#3f9 Sample Pass Level AA for large text3.17
Fail fo regular text
Fail 92 Pass 510
#3fc Sample Pass Level AA for large text3.26
Fail fo regular text
Fail 98 Fail 459
#3ff Sample Pass Level AA for large text3.37
Fail fo regular text
Fail 103 Fail 408
#600 Sample Pass Level AA for large text3.20
Fail fo regular text
Fail 59 Fail 357
#603 Sample Pass Level AA for large text3.11
Fail fo regular text
Fail 53 Fail 306
#606 Sample Fail2.85
Fail
Fail 47 Fail 255
#609 Sample Fail2.47
Fail
Fail 42 Fail 204
#60c Sample Fail2.06
Fail
Fail 36 Fail 153
#60f Sample Fail1.67
Fail
Fail 30 Fail 102
#630 Sample Fail2.46
Fail
Fail 29 Fail 408
#633 Sample Fail2.40
Fail
Fail 23 Fail 357
#636 Sample Fail2.25
Fail
Fail 18 Fail 306
#639 Sample Fail2.01
Fail
Fail 12 Fail 255
#63c Sample Fail1.72
Fail
Fail 6 Fail 204
#63f Sample Fail1.44
Fail
Fail 0 Fail 153
#660 Sample Fail1.45
Fail
Fail 0 Fail 459
#663 Sample Fail1.43
Fail
Fail 6 Fail 408
#666 Sample Fail1.37
Fail
Fail 11 Fail 357
#669 Sample Fail1.28
Fail
Fail 17 Fail 306
#66c Sample Fail1.16
Fail
Fail 23 Fail 255
#66f Sample Fail1.02
Fail
Fail 29 Fail 204
#690 Sample Fail1.22
Fail
Fail 30 Pass 510
#693 Sample Fail1.23
Fail
Fail 36 Fail 459
#696 Sample Fail1.26
Fail
Fail 41 Fail 408
#699 Sample Fail1.31
Fail
Fail 47 Fail 357
#69c Sample Fail1.40
Fail
Fail 53 Fail 306
#69f Sample Fail1.51
Fail
Fail 59 Fail 255
#6c0 Sample Fail2.04
Fail
Fail 60 Pass 561
#6c3 Sample Fail2.05
Fail
Fail 65 Pass 510
#6c6 Sample Fail2.07
Fail
Fail 71 Fail 459
#6c9 Sample Fail2.13
Fail
Fail 77 Fail 408
#6cc Sample Fail2.21
Fail
Fail 83 Fail 357
#6cf Sample Fail2.32
Fail
Fail 89 Fail 306
#6f0 Sample Pass Level AA for large text3.17
Fail fo regular text
Fail 90 Pass 612
#6f3 Sample Pass Level AA for large text3.18
Fail fo regular text
Fail 95 Pass 561
#6f6 Sample Pass Level AA for large text3.20
Fail fo regular text
Fail 101 Pass 510
#6f9 Sample Pass Level AA for large text3.26
Fail fo regular text
Fail 107 Fail 459
#6fc Sample Pass Level AA for large text3.34
Fail fo regular text
Fail 113 Fail 408
#6ff Sample Pass Level AA for large text3.45
Fail fo regular text
Fail 119 Fail 357
#900 Sample Fail2.13
Fail
Fail 44 Fail 306
#903 Sample Fail2.09
Fail
Fail 38 Fail 255
#906 Sample Fail1.97
Fail
Fail 32 Fail 204
#909 Sample Fail1.78
Fail
Fail 26 Fail 153
#90c Sample Fail1.55
Fail
Fail 21 Fail 102
#90f Sample Fail1.32
Fail
Fail 15 Fail 51
#930 Sample Fail1.77
Fail
Fail 14 Fail 357
#933 Sample Fail1.74
Fail
Fail 8 Fail 306
#936 Sample Fail1.66
Fail
Fail 2 Fail 255
#939 Sample Fail1.52
Fail
Fail 3 Fail 204
#93c Sample Fail1.35
Fail
Fail 8 Fail 153
#93f Sample Fail1.17
Fail
Fail 14 Fail 102
#960 Sample Fail1.18
Fail
Fail 15 Fail 408
#963 Sample Fail1.16
Fail
Fail 21 Fail 357
#966 Sample Fail1.13
Fail
Fail 27 Fail 306
#969 Sample Fail1.06
Fail
Fail 32 Fail 255
#96c Sample Fail1.02
Fail
Fail 38 Fail 204
#96f Sample Fail1.14
Fail
Fail 44 Fail 153
#990 Sample Fail1.38
Fail
Fail 45 Fail 459
#993 Sample Fail1.39
Fail
Fail 51 Fail 408
#996 Sample Fail1.42
Fail
Fail 57 Fail 357
#999 Sample Fail1.47
Fail
Fail 62 Fail 306
#99c Sample Fail1.55
Fail
Fail 68 Fail 255
#99f Sample Fail1.67
Fail
Fail 74 Fail 204
#9c0 Sample Fail2.19
Fail
Fail 75 Pass 510
#9c3 Sample Fail2.20
Fail
Fail 81 Fail 459
#9c6 Sample Fail2.23
Fail
Fail 87 Fail 408
#9c9 Sample Fail2.29
Fail
Fail 92 Fail 357
#9cc Sample Fail2.37
Fail
Fail 98 Fail 306
#9cf Sample Fail2.48
Fail
Fail 104 Fail 255
#9f0 Sample Pass Level AA for large text3.32
Fail fo regular text
Fail 105 Pass 561
#9f3 Sample Pass Level AA for large text3.33
Fail fo regular text
Fail 111 Pass 510
#9f6 Sample Pass Level AA for large text3.36
Fail fo regular text
Fail 116 Fail 459
#9f9 Sample Pass Level AA for large text3.42
Fail fo regular text
Fail 122 Fail 408
#9fc Sample Pass Level AA for large text3.50
Fail fo regular text
Pass 128 Fail 357
#9ff Sample Pass Level AA for large text3.61
Fail fo regular text
Pass 134 Fail 306
#c00 Sample Fail1.40
Fail
Fail 29 Fail 255
#c03 Sample Fail1.39
Fail
Fail 23 Fail 204
#c06 Sample Fail1.33
Fail
Fail 17 Fail 153
#c09 Sample Fail1.24
Fail
Fail 11 Fail 102
#c0c Sample Fail1.13
Fail
Fail 5 Fail 51
#c0f Sample Fail1.00
Fail
Fail 0 Fail 0
#c30 Sample Fail1.24
Fail
Fail 0 Fail 306
#c33 Sample Fail1.23
Fail
Fail 6 Fail 255
#c36 Sample Fail1.18
Fail
Fail 12 Fail 204
#c39 Sample Fail1.11
Fail
Fail 18 Fail 153
#c3c Sample Fail1.02
Fail
Fail 24 Fail 102
#c3f Sample Fail1.09
Fail
Fail 29 Fail 51
#c60 Sample Fail1.09
Fail
Fail 30 Fail 357
#c63 Sample Fail1.10
Fail
Fail 36 Fail 306
#c66 Sample Fail1.13
Fail
Fail 42 Fail 255
#c69 Sample Fail1.18
Fail
Fail 48 Fail 204
#c6c Sample Fail1.27
Fail
Fail 54 Fail 153
#c6f Sample Fail1.38
Fail
Fail 59 Fail 102
#c90 Sample Fail1.62
Fail
Fail 60 Fail 408
#c93 Sample Fail1.63
Fail
Fail 66 Fail 357
#c96 Sample Fail1.66
Fail
Fail 72 Fail 306
#c99 Sample Fail1.71
Fail
Fail 78 Fail 255
#c9c Sample Fail1.80
Fail
Fail 83 Fail 204
#c9f Sample Fail1.91
Fail
Fail 89 Fail 153
#cc0 Sample Fail2.44
Fail
Fail 90 Fail 459
#cc3 Sample Fail2.44
Fail
Fail 96 Fail 408
#cc6 Sample Fail2.47
Fail
Fail 102 Fail 357
#cc9 Sample Fail2.53
Fail
Fail 108 Fail 306
#ccc Sample Fail2.61
Fail
Fail 113 Fail 255
#ccf Sample Fail2.72
Fail
Fail 119 Fail 204
#cf0 Sample Pass Level AA for large text3.57
Fail fo regular text
Fail 120 Pass 510
#cf3 Sample Pass Level AA for large text3.58
Fail fo regular text
Pass 126 Fail 459
#cf6 Sample Pass Level AA for large text3.60
Fail fo regular text
Pass 132 Fail 408
#cf9 Sample Pass Level AA for large text3.66
Fail fo regular text
Pass 138 Fail 357
#cfc Sample Pass Level AA for large text3.74
Fail fo regular text
Pass 143 Fail 306
#cff Sample Pass Level AA for large text3.85
Fail fo regular text
Pass 149 Fail 255
#f00 Sample Fail1.05
Fail
Fail 13 Fail 306
#f03 Sample Fail1.06
Fail
Fail 8 Fail 255
#f06 Sample Fail1.09
Fail
Fail 2 Fail 204
#f09 Sample Fail1.14
Fail
Fail 3 Fail 153
#f0c Sample Fail1.22
Fail
Fail 9 Fail 102
#f0f Sample Fail1.34
Fail
Fail 15 Fail 51
#f30 Sample Fail1.14
Fail
Fail 16 Fail 357
#f33 Sample Fail1.15
Fail
Fail 21 Fail 306
#f36 Sample Fail1.18
Fail
Fail 27 Fail 255
#f39 Sample Fail1.23
Fail
Fail 33 Fail 204
#f3c Sample Fail1.32
Fail
Fail 39 Fail 153
#f3f Sample Fail1.43
Fail
Fail 45 Fail 102
#f60 Sample Fail1.43
Fail
Fail 46 Fail 408
#f63 Sample Fail1.44
Fail
Fail 51 Fail 357
#f66 Sample Fail1.47
Fail
Fail 57 Fail 306
#f69 Sample Fail1.52
Fail
Fail 63 Fail 255
#f6c Sample Fail1.60
Fail
Fail 69 Fail 204
#f6f Sample Fail1.72
Fail
Fail 75 Fail 153
#f90 Sample Fail1.96
Fail
Fail 75 Fail 459
#f93 Sample Fail1.97
Fail
Fail 81 Fail 408
#f96 Sample Fail2.00
Fail
Fail 87 Fail 357
#f99 Sample Fail2.05
Fail
Fail 93 Fail 306
#f9c Sample Fail2.13
Fail
Fail 99 Fail 255
#f9f Sample Fail2.25
Fail
Fail 105 Fail 204
#fc0 Sample Fail2.77
Fail
Fail 105 Pass 510
#fc3 Sample Fail2.78
Fail
Fail 111 Fail 459
#fc6 Sample Fail2.81
Fail
Fail 117 Fail 408
#fc9 Sample Fail2.86
Fail
Fail 123 Fail 357
#fcc Sample Fail2.95
Fail
Pass 129 Fail 306
#fcf Sample Pass Level AA for large text3.06
Fail fo regular text
Pass 134 Fail 255
#ff0 Sample Pass Level AA for large text3.90
Fail fo regular text
Pass 135 Pass 561
#ff3 Sample Pass Level AA for large text3.91
Fail fo regular text
Pass 141 Pass 510
#ff6 Sample Pass Level AA for large text3.94
Fail fo regular text
Pass 147 Fail 459
#ff9 Sample Pass Level AA for large text3.99
Fail fo regular text
Pass 153 Fail 408
#ffc Sample Pass Level AA for large text4.08
Fail fo regular text
Pass 159 Fail 357
#fff Sample Pass Level AA for large text4.19
Fail fo regular text
Pass 164 Fail 306

Other Background Colour Combinations

Examine luminosity contrast ratios with other web safe backround colours.