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 #c63

The following table shows the luminosity contrast ratios for all web safe colours with a background colour of #c63, along with the difference in brightness and the difference in colour used by the colour contrast analyser for comparison.

Luminosity Ratios with background: #c63
Foreground Colour Sample Luminosity Contrast Ratio Difference in Brightness Difference in Colour
#000 Sample Pass Level AAA for large text5.52
Pass level 2 fo regular text
Pass 126 Fail 357
#003 Sample Pass Level AAA for large text5.26
Pass level 2 fo regular text
Fail 120 Fail 306
#006 Sample Pass Level AAA for large text4.63
Pass level 2 fo regular text
Fail 115 Fail 357
#009 Sample Pass Level AA for large text3.78
Fail fo regular text
Fail 109 Fail 408
#00c Sample Fail2.95
Fail
Fail 103 Fail 459
#00f Sample Fail2.26
Fail
Fail 97 Pass 510
#030 Sample Pass Level AA for large text3.74
Fail fo regular text
Fail 96 Fail 306
#033 Sample Pass Level AA for large text3.63
Fail fo regular text
Fail 90 Fail 255
#036 Sample Pass Level AA for large text3.31
Fail fo regular text
Fail 85 Fail 306
#039 Sample Fail2.85
Fail
Fail 79 Fail 357
#03c Sample Fail2.35
Fail
Fail 73 Fail 408
#03f Sample Fail1.89
Fail
Fail 67 Fail 459
#060 Sample Fail1.90
Fail
Fail 66 Fail 255
#063 Sample Fail1.87
Fail
Fail 60 Fail 204
#066 Sample Fail1.78
Fail
Fail 55 Fail 255
#069 Sample Fail1.64
Fail
Fail 49 Fail 306
#06c Sample Fail1.46
Fail
Fail 43 Fail 357
#06f Sample Fail1.27
Fail
Fail 37 Fail 408
#090 Sample Fail1.01
Fail
Fail 36 Fail 306
#093 Sample Fail1.02
Fail
Fail 31 Fail 255
#096 Sample Fail1.04
Fail
Fail 25 Fail 306
#099 Sample Fail1.09
Fail
Fail 19 Fail 357
#09c Sample Fail1.17
Fail
Fail 13 Fail 408
#09f Sample Fail1.27
Fail
Fail 7 Fail 459
#0c0 Sample Fail1.75
Fail
Fail 6 Fail 357
#0c3 Sample Fail1.76
Fail
Fail 1 Fail 306
#0c6 Sample Fail1.78
Fail
Fail 4 Fail 357
#0c9 Sample Fail1.83
Fail
Fail 10 Fail 408
#0cc Sample Fail1.91
Fail
Fail 16 Fail 459
#0cf Sample Fail2.01
Fail
Fail 22 Pass 510
#0f0 Sample Fail2.77
Fail
Fail 23 Fail 408
#0f3 Sample Fail2.78
Fail
Fail 28 Fail 357
#0f6 Sample Fail2.81
Fail
Fail 34 Fail 408
#0f9 Sample Fail2.86
Fail
Fail 40 Fail 459
#0fc Sample Fail2.93
Fail
Fail 46 Pass 510
#0ff Sample Pass Level AA for large text3.04
Fail fo regular text
Fail 52 Pass 561
#300 Sample Pass Level AAA for large text4.84
Pass level 2 fo regular text
Fail 111 Fail 306
#303 Sample Pass Level AAA for large text4.64
Pass level 2 fo regular text
Fail 105 Fail 255
#306 Sample Pass Level AA for large text4.14
Fail fo regular text
Fail 99 Fail 306
#309 Sample Pass Level AA for large text3.45
Fail fo regular text
Fail 93 Fail 357
#30c Sample Fail2.74
Fail
Fail 88 Fail 408
#30f Sample Fail2.13
Fail
Fail 82 Fail 459
#330 Sample Pass Level AA for large text3.42
Fail fo regular text
Fail 81 Fail 255
#333 Sample Pass Level AA for large text3.32
Fail fo regular text
Fail 75 Fail 204
#336 Sample Pass Level AA for large text3.05
Fail fo regular text
Fail 69 Fail 255
#339 Sample Fail2.66
Fail
Fail 64 Fail 306
#33c Sample Fail2.22
Fail
Fail 58 Fail 357
#33f Sample Fail1.80
Fail
Fail 52 Fail 408
#360 Sample Fail1.81
Fail
Fail 51 Fail 204
#363 Sample Fail1.79
Fail
Fail 45 Fail 153
#366 Sample Fail1.71
Fail
Fail 39 Fail 204
#369 Sample Fail1.58
Fail
Fail 34 Fail 255
#36c Sample Fail1.41
Fail
Fail 28 Fail 306
#36f Sample Fail1.23
Fail
Fail 22 Fail 357
#390 Sample Fail1.03
Fail
Fail 21 Fail 255
#393 Sample Fail1.04
Fail
Fail 15 Fail 204
#396 Sample Fail1.07
Fail
Fail 9 Fail 255
#399 Sample Fail1.12
Fail
Fail 4 Fail 306
#39c Sample Fail1.19
Fail
Fail 1 Fail 357
#39f Sample Fail1.29
Fail
Fail 7 Fail 408
#3c0 Sample Fail1.77
Fail
Fail 8 Fail 306
#3c3 Sample Fail1.78
Fail
Fail 14 Fail 255
#3c6 Sample Fail1.81
Fail
Fail 19 Fail 306
#3c9 Sample Fail1.86
Fail
Fail 25 Fail 357
#3cc Sample Fail1.93
Fail
Fail 31 Fail 408
#3cf Sample Fail2.03
Fail
Fail 37 Fail 459
#3f0 Sample Fail2.80
Fail
Fail 38 Fail 357
#3f3 Sample Fail2.81
Fail
Fail 44 Fail 306
#3f6 Sample Fail2.83
Fail
Fail 49 Fail 357
#3f9 Sample Fail2.88
Fail
Fail 55 Fail 408
#3fc Sample Fail2.96
Fail
Fail 61 Fail 459
#3ff Sample Pass Level AA for large text3.06
Fail fo regular text
Fail 67 Pass 510
#600 Sample Pass Level AA for large text3.52
Fail fo regular text
Fail 96 Fail 255
#603 Sample Pass Level AA for large text3.42
Fail fo regular text
Fail 90 Fail 204
#606 Sample Pass Level AA for large text3.14
Fail fo regular text
Fail 84 Fail 255
#609 Sample Fail2.72
Fail
Fail 78 Fail 306
#60c Sample Fail2.26
Fail
Fail 72 Fail 357
#60f Sample Fail1.83
Fail
Fail 67 Fail 408
#630 Sample Fail2.71
Fail
Fail 66 Fail 204
#633 Sample Fail2.64
Fail
Fail 60 Fail 153
#636 Sample Fail2.47
Fail
Fail 54 Fail 204
#639 Sample Fail2.21
Fail
Fail 48 Fail 255
#63c Sample Fail1.90
Fail
Fail 42 Fail 306
#63f Sample Fail1.58
Fail
Fail 37 Fail 357
#660 Sample Fail1.59
Fail
Fail 36 Fail 153
#663 Sample Fail1.57
Fail
Fail 30 Fail 102
#666 Sample Fail1.51
Fail
Fail 24 Fail 153
#669 Sample Fail1.41
Fail
Fail 18 Fail 204
#66c Sample Fail1.27
Fail
Fail 13 Fail 255
#66f Sample Fail1.12
Fail
Fail 7 Fail 306
#690 Sample Fail1.11
Fail
Fail 6 Fail 204
#693 Sample Fail1.12
Fail
Fail 0 Fail 153
#696 Sample Fail1.14
Fail
Fail 5 Fail 204
#699 Sample Fail1.19
Fail
Fail 11 Fail 255
#69c Sample Fail1.27
Fail
Fail 16 Fail 306
#69f Sample Fail1.37
Fail
Fail 22 Fail 357
#6c0 Sample Fail1.85
Fail
Fail 23 Fail 255
#6c3 Sample Fail1.86
Fail
Fail 29 Fail 204
#6c6 Sample Fail1.88
Fail
Fail 35 Fail 255
#6c9 Sample Fail1.93
Fail
Fail 41 Fail 306
#6cc Sample Fail2.01
Fail
Fail 46 Fail 357
#6cf Sample Fail2.11
Fail
Fail 52 Fail 408
#6f0 Sample Fail2.88
Fail
Fail 53 Fail 306
#6f3 Sample Fail2.89
Fail
Fail 59 Fail 255
#6f6 Sample Fail2.91
Fail
Fail 65 Fail 306
#6f9 Sample Fail2.96
Fail
Fail 70 Fail 357
#6fc Sample Pass Level AA for large text3.04
Fail fo regular text
Fail 76 Fail 408
#6ff Sample Pass Level AA for large text3.14
Fail fo regular text
Fail 82 Fail 459
#900 Sample Fail2.34
Fail
Fail 80 Fail 204
#903 Sample Fail2.30
Fail
Fail 75 Fail 153
#906 Sample Fail2.17
Fail
Fail 69 Fail 204
#909 Sample Fail1.96
Fail
Fail 63 Fail 255
#90c Sample Fail1.71
Fail
Fail 57 Fail 306
#90f Sample Fail1.45
Fail
Fail 51 Fail 357
#930 Sample Fail1.95
Fail
Fail 51 Fail 153
#933 Sample Fail1.92
Fail
Fail 45 Fail 102
#936 Sample Fail1.83
Fail
Fail 39 Fail 153
#939 Sample Fail1.68
Fail
Fail 33 Fail 204
#93c Sample Fail1.49
Fail
Fail 27 Fail 255
#93f Sample Fail1.29
Fail
Fail 21 Fail 306
#960 Sample Fail1.30
Fail
Fail 21 Fail 102
#963 Sample Fail1.28
Fail
Fail 15 Fail 51
#966 Sample Fail1.24
Fail
Fail 9 Fail 102
#969 Sample Fail1.17
Fail
Fail 3 Fail 153
#96c Sample Fail1.08
Fail
Fail 2 Fail 204
#96f Sample Fail1.03
Fail
Fail 8 Fail 255
#990 Sample Fail1.25
Fail
Fail 8 Fail 153
#993 Sample Fail1.26
Fail
Fail 14 Fail 102
#996 Sample Fail1.29
Fail
Fail 20 Fail 153
#999 Sample Fail1.34
Fail
Fail 26 Fail 204
#99c Sample Fail1.41
Fail
Fail 32 Fail 255
#99f Sample Fail1.51
Fail
Fail 37 Fail 306
#9c0 Sample Fail1.99
Fail
Fail 38 Fail 204
#9c3 Sample Fail2.00
Fail
Fail 44 Fail 153
#9c6 Sample Fail2.03
Fail
Fail 50 Fail 204
#9c9 Sample Fail2.08
Fail
Fail 56 Fail 255
#9cc Sample Fail2.15
Fail
Fail 62 Fail 306
#9cf Sample Fail2.25
Fail
Fail 67 Fail 357
#9f0 Sample Pass Level AA for large text3.02
Fail fo regular text
Fail 68 Fail 255
#9f3 Sample Pass Level AA for large text3.03
Fail fo regular text
Fail 74 Fail 204
#9f6 Sample Pass Level AA for large text3.05
Fail fo regular text
Fail 80 Fail 255
#9f9 Sample Pass Level AA for large text3.10
Fail fo regular text
Fail 86 Fail 306
#9fc Sample Pass Level AA for large text3.18
Fail fo regular text
Fail 92 Fail 357
#9ff Sample Pass Level AA for large text3.28
Fail fo regular text
Fail 97 Fail 408
#c00 Sample Fail1.55
Fail
Fail 65 Fail 153
#c03 Sample Fail1.53
Fail
Fail 59 Fail 102
#c06 Sample Fail1.47
Fail
Fail 54 Fail 153
#c09 Sample Fail1.37
Fail
Fail 48 Fail 204
#c0c Sample Fail1.24
Fail
Fail 42 Fail 255
#c0f Sample Fail1.10
Fail
Fail 36 Fail 306
#c30 Sample Fail1.36
Fail
Fail 35 Fail 102
#c33 Sample Fail1.35
Fail
Fail 29 Fail 51
#c36 Sample Fail1.30
Fail
Fail 24 Fail 102
#c39 Sample Fail1.23
Fail
Fail 18 Fail 153
#c3c Sample Fail1.12
Fail
Fail 12 Fail 204
#c3f Sample Fail1.01
Fail
Fail 6 Fail 255
#c60 Sample Fail1.01
Fail
Fail 5 Fail 51
#c63 Sample Fail1.00
Fail
Fail 0 Fail 0
#c66 Sample Fail1.03
Fail
Fail 5 Fail 51
#c69 Sample Fail1.07
Fail
Fail 11 Fail 102
#c6c Sample Fail1.15
Fail
Fail 17 Fail 153
#c6f Sample Fail1.25
Fail
Fail 23 Fail 204
#c90 Sample Fail1.47
Fail
Fail 24 Fail 102
#c93 Sample Fail1.48
Fail
Fail 29 Fail 51
#c96 Sample Fail1.51
Fail
Fail 35 Fail 102
#c99 Sample Fail1.56
Fail
Fail 41 Fail 153
#c9c Sample Fail1.63
Fail
Fail 47 Fail 204
#c9f Sample Fail1.73
Fail
Fail 53 Fail 255
#cc0 Sample Fail2.21
Fail
Fail 54 Fail 153
#cc3 Sample Fail2.22
Fail
Fail 59 Fail 102
#cc6 Sample Fail2.25
Fail
Fail 65 Fail 153
#cc9 Sample Fail2.30
Fail
Fail 71 Fail 204
#ccc Sample Fail2.37
Fail
Fail 77 Fail 255
#ccf Sample Fail2.47
Fail
Fail 83 Fail 306
#cf0 Sample Pass Level AA for large text3.24
Fail fo regular text
Fail 83 Fail 204
#cf3 Sample Pass Level AA for large text3.25
Fail fo regular text
Fail 89 Fail 153
#cf6 Sample Pass Level AA for large text3.27
Fail fo regular text
Fail 95 Fail 204
#cf9 Sample Pass Level AA for large text3.32
Fail fo regular text
Fail 101 Fail 255
#cfc Sample Pass Level AA for large text3.40
Fail fo regular text
Fail 107 Fail 306
#cff Sample Pass Level AA for large text3.50
Fail fo regular text
Fail 113 Fail 357
#f00 Sample Fail1.05
Fail
Fail 50 Fail 204
#f03 Sample Fail1.04
Fail
Fail 44 Fail 153
#f06 Sample Fail1.01
Fail
Fail 38 Fail 204
#f09 Sample Fail1.04
Fail
Fail 32 Fail 255
#f0c Sample Fail1.11
Fail
Fail 27 Fail 306
#f0f Sample Fail1.21
Fail
Fail 21 Fail 357
#f30 Sample Fail1.04
Fail
Fail 20 Fail 153
#f33 Sample Fail1.05
Fail
Fail 14 Fail 102
#f36 Sample Fail1.07
Fail
Fail 8 Fail 153
#f39 Sample Fail1.12
Fail
Fail 3 Fail 204
#f3c Sample Fail1.20
Fail
Fail 2 Fail 255
#f3f Sample Fail1.30
Fail
Fail 8 Fail 306
#f60 Sample Fail1.30
Fail
Fail 9 Fail 102
#f63 Sample Fail1.31
Fail
Fail 15 Fail 51
#f66 Sample Fail1.33
Fail
Fail 21 Fail 102
#f69 Sample Fail1.38
Fail
Fail 26 Fail 153
#f6c Sample Fail1.45
Fail
Fail 32 Fail 204
#f6f Sample Fail1.56
Fail
Fail 38 Fail 255
#f90 Sample Fail1.78
Fail
Fail 39 Fail 153
#f93 Sample Fail1.79
Fail
Fail 45 Fail 102
#f96 Sample Fail1.81
Fail
Fail 51 Fail 153
#f99 Sample Fail1.86
Fail
Fail 56 Fail 204
#f9c Sample Fail1.94
Fail
Fail 62 Fail 255
#f9f Sample Fail2.04
Fail
Fail 68 Fail 306
#fc0 Sample Fail2.52
Fail
Fail 69 Fail 204
#fc3 Sample Fail2.53
Fail
Fail 75 Fail 153
#fc6 Sample Fail2.55
Fail
Fail 80 Fail 204
#fc9 Sample Fail2.60
Fail
Fail 86 Fail 255
#fcc Sample Fail2.68
Fail
Fail 92 Fail 306
#fcf Sample Fail2.78
Fail
Fail 98 Fail 357
#ff0 Sample Pass Level AA for large text3.55
Fail fo regular text
Fail 99 Fail 255
#ff3 Sample Pass Level AA for large text3.55
Fail fo regular text
Fail 105 Fail 204
#ff6 Sample Pass Level AA for large text3.58
Fail fo regular text
Fail 110 Fail 255
#ff9 Sample Pass Level AA for large text3.63
Fail fo regular text
Fail 116 Fail 306
#ffc Sample Pass Level AA for large text3.70
Fail fo regular text
Fail 122 Fail 357
#fff Sample Pass Level AA for large text3.81
Fail fo regular text
Pass 128 Fail 408

Other Background Colour Combinations

Examine luminosity contrast ratios with other web safe backround colours.