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 #f66

The following table shows the luminosity contrast ratios for all web safe colours with a background colour of #f66, along with the difference in brightness and the difference in colour used by the colour contrast analyser for comparison.

Luminosity Ratios with background: #f66
Foreground Colour Sample Luminosity Contrast Ratio Difference in Brightness Difference in Colour
#000 Sample Pass Level AAA for large text7.34
Pass Level AAA for regular text
Pass 147 Fail 459
#003 Sample Pass Level AAA for large text7.01
Pass Level AAA for regular text
Pass 141 Fail 408
#006 Sample Pass Level AAA for large text6.16
Pass level 2 fo regular text
Pass 136 Fail 357
#009 Sample Pass Level AAA for large text5.03
Pass level 2 fo regular text
Pass 130 Fail 408
#00c Sample Pass Level AA for large text3.92
Fail fo regular text
Fail 124 Fail 459
#00f Sample Pass Level AA for large text3.01
Fail fo regular text
Fail 118 Pass 510
#030 Sample Pass Level AAA for large text4.98
Pass level 2 fo regular text
Fail 117 Fail 408
#033 Sample Pass Level AAA for large text4.83
Pass level 2 fo regular text
Fail 111 Fail 357
#036 Sample Pass Level AA for large text4.41
Fail fo regular text
Fail 106 Fail 306
#039 Sample Pass Level AA for large text3.80
Fail fo regular text
Fail 100 Fail 357
#03c Sample Pass Level AA for large text3.13
Fail fo regular text
Fail 94 Fail 408
#03f Sample Fail2.52
Fail
Fail 88 Fail 459
#060 Sample Fail2.53
Fail
Fail 87 Fail 357
#063 Sample Fail2.49
Fail
Fail 82 Fail 306
#066 Sample Fail2.37
Fail
Fail 76 Fail 255
#069 Sample Fail2.19
Fail
Fail 70 Fail 306
#06c Sample Fail1.95
Fail
Fail 64 Fail 357
#06f Sample Fail1.69
Fail
Fail 58 Fail 408
#090 Sample Fail1.32
Fail
Fail 57 Fail 408
#093 Sample Fail1.31
Fail
Fail 52 Fail 357
#096 Sample Fail1.28
Fail
Fail 46 Fail 306
#099 Sample Fail1.22
Fail
Fail 40 Fail 357
#09c Sample Fail1.14
Fail
Fail 34 Fail 408
#09f Sample Fail1.05
Fail
Fail 28 Fail 459
#0c0 Sample Fail1.31
Fail
Fail 27 Fail 459
#0c3 Sample Fail1.32
Fail
Fail 22 Fail 408
#0c6 Sample Fail1.34
Fail
Fail 16 Fail 357
#0c9 Sample Fail1.37
Fail
Fail 10 Fail 408
#0cc Sample Fail1.43
Fail
Fail 4 Fail 459
#0cf Sample Fail1.51
Fail
Fail 1 Pass 510
#0f0 Sample Fail2.08
Fail
Fail 1 Pass 510
#0f3 Sample Fail2.09
Fail
Fail 7 Fail 459
#0f6 Sample Fail2.11
Fail
Fail 13 Fail 408
#0f9 Sample Fail2.15
Fail
Fail 19 Fail 459
#0fc Sample Fail2.20
Fail
Fail 25 Pass 510
#0ff Sample Fail2.28
Fail
Fail 31 Pass 561
#300 Sample Pass Level AAA for large text6.44
Pass level 2 fo regular text
Pass 132 Fail 408
#303 Sample Pass Level AAA for large text6.18
Pass level 2 fo regular text
Pass 126 Fail 357
#306 Sample Pass Level AAA for large text5.51
Pass level 2 fo regular text
Fail 120 Fail 306
#309 Sample Pass Level AAA for large text4.59
Pass level 2 fo regular text
Fail 115 Fail 357
#30c Sample Pass Level AA for large text3.65
Fail fo regular text
Fail 109 Fail 408
#30f Sample Fail2.84
Fail
Fail 103 Fail 459
#330 Sample Pass Level AAA for large text4.55
Pass level 2 fo regular text
Fail 102 Fail 357
#333 Sample Pass Level AA for large text4.42
Fail fo regular text
Fail 96 Fail 306
#336 Sample Pass Level AA for large text4.07
Fail fo regular text
Fail 90 Fail 255
#339 Sample Pass Level AA for large text3.54
Fail fo regular text
Fail 85 Fail 306
#33c Sample Fail2.95
Fail
Fail 79 Fail 357
#33f Sample Fail2.40
Fail
Fail 73 Fail 408
#360 Sample Fail2.41
Fail
Fail 72 Fail 306
#363 Sample Fail2.38
Fail
Fail 66 Fail 255
#366 Sample Fail2.27
Fail
Fail 60 Fail 204
#369 Sample Fail2.10
Fail
Fail 55 Fail 255
#36c Sample Fail1.88
Fail
Fail 49 Fail 306
#36f Sample Fail1.64
Fail
Fail 43 Fail 357
#390 Sample Fail1.29
Fail
Fail 42 Fail 357
#393 Sample Fail1.28
Fail
Fail 36 Fail 306
#396 Sample Fail1.25
Fail
Fail 31 Fail 255
#399 Sample Fail1.19
Fail
Fail 25 Fail 306
#39c Sample Fail1.12
Fail
Fail 19 Fail 357
#39f Sample Fail1.03
Fail
Fail 13 Fail 408
#3c0 Sample Fail1.33
Fail
Fail 12 Fail 408
#3c3 Sample Fail1.34
Fail
Fail 6 Fail 357
#3c6 Sample Fail1.36
Fail
Fail 1 Fail 306
#3c9 Sample Fail1.39
Fail
Fail 4 Fail 357
#3cc Sample Fail1.45
Fail
Fail 10 Fail 408
#3cf Sample Fail1.53
Fail
Fail 16 Fail 459
#3f0 Sample Fail2.10
Fail
Fail 17 Fail 459
#3f3 Sample Fail2.11
Fail
Fail 23 Fail 408
#3f6 Sample Fail2.13
Fail
Fail 28 Fail 357
#3f9 Sample Fail2.17
Fail
Fail 34 Fail 408
#3fc Sample Fail2.22
Fail
Fail 40 Fail 459
#3ff Sample Fail2.30
Fail
Fail 46 Pass 510
#600 Sample Pass Level AAA for large text4.69
Pass level 2 fo regular text
Fail 117 Fail 357
#603 Sample Pass Level AAA for large text4.55
Pass level 2 fo regular text
Fail 111 Fail 306
#606 Sample Pass Level AA for large text4.18
Fail fo regular text
Fail 105 Fail 255
#609 Sample Pass Level AA for large text3.63
Fail fo regular text
Fail 99 Fail 306
#60c Sample Pass Level AA for large text3.01
Fail fo regular text
Fail 93 Fail 357
#60f Sample Fail2.44
Fail
Fail 88 Fail 408
#630 Sample Pass Level AA for large text3.60
Fail fo regular text
Fail 87 Fail 306
#633 Sample Pass Level AA for large text3.52
Fail fo regular text
Fail 81 Fail 255
#636 Sample Pass Level AA for large text3.29
Fail fo regular text
Fail 75 Fail 204
#639 Sample Fail2.94
Fail
Fail 69 Fail 255
#63c Sample Fail2.52
Fail
Fail 64 Fail 306
#63f Sample Fail2.11
Fail
Fail 58 Fail 357
#660 Sample Fail2.12
Fail
Fail 57 Fail 255
#663 Sample Fail2.09
Fail
Fail 51 Fail 204
#666 Sample Fail2.01
Fail
Fail 45 Fail 153
#669 Sample Fail1.87
Fail
Fail 39 Fail 204
#66c Sample Fail1.69
Fail
Fail 34 Fail 255
#66f Sample Fail1.50
Fail
Fail 28 Fail 306
#690 Sample Fail1.20
Fail
Fail 27 Fail 306
#693 Sample Fail1.19
Fail
Fail 21 Fail 255
#696 Sample Fail1.16
Fail
Fail 15 Fail 204
#699 Sample Fail1.12
Fail
Fail 9 Fail 255
#69c Sample Fail1.05
Fail
Fail 4 Fail 306
#69f Sample Fail1.03
Fail
Fail 1 Fail 357
#6c0 Sample Fail1.39
Fail
Fail 2 Fail 357
#6c3 Sample Fail1.40
Fail
Fail 8 Fail 306
#6c6 Sample Fail1.42
Fail
Fail 14 Fail 255
#6c9 Sample Fail1.45
Fail
Fail 19 Fail 306
#6cc Sample Fail1.51
Fail
Fail 25 Fail 357
#6cf Sample Fail1.59
Fail
Fail 31 Fail 408
#6f0 Sample Fail2.16
Fail
Fail 32 Fail 408
#6f3 Sample Fail2.17
Fail
Fail 38 Fail 357
#6f6 Sample Fail2.19
Fail
Fail 44 Fail 306
#6f9 Sample Fail2.22
Fail
Fail 49 Fail 357
#6fc Sample Fail2.28
Fail
Fail 55 Fail 408
#6ff Sample Fail2.36
Fail
Fail 61 Fail 459
#900 Sample Pass Level AA for large text3.12
Fail fo regular text
Fail 102 Fail 306
#903 Sample Pass Level AA for large text3.06
Fail fo regular text
Fail 96 Fail 255
#906 Sample Fail2.88
Fail
Fail 90 Fail 204
#909 Sample Fail2.61
Fail
Fail 84 Fail 255
#90c Sample Fail2.28
Fail
Fail 78 Fail 306
#90f Sample Fail1.93
Fail
Fail 72 Fail 357
#930 Sample Fail2.60
Fail
Fail 72 Fail 255
#933 Sample Fail2.55
Fail
Fail 66 Fail 204
#936 Sample Fail2.43
Fail
Fail 60 Fail 153
#939 Sample Fail2.23
Fail
Fail 54 Fail 204
#93c Sample Fail1.99
Fail
Fail 48 Fail 255
#93f Sample Fail1.72
Fail
Fail 42 Fail 306
#960 Sample Fail1.73
Fail
Fail 42 Fail 204
#963 Sample Fail1.71
Fail
Fail 36 Fail 153
#966 Sample Fail1.65
Fail
Fail 30 Fail 102
#969 Sample Fail1.56
Fail
Fail 24 Fail 153
#96c Sample Fail1.43
Fail
Fail 18 Fail 204
#96f Sample Fail1.29
Fail
Fail 13 Fail 255
#990 Sample Fail1.06
Fail
Fail 12 Fail 255
#993 Sample Fail1.06
Fail
Fail 6 Fail 204
#996 Sample Fail1.03
Fail
Fail 0 Fail 153
#999 Sample Fail1.00
Fail
Fail 5 Fail 204
#99c Sample Fail1.06
Fail
Fail 11 Fail 255
#99f Sample Fail1.14
Fail
Fail 16 Fail 306
#9c0 Sample Fail1.50
Fail
Fail 17 Fail 306
#9c3 Sample Fail1.50
Fail
Fail 23 Fail 255
#9c6 Sample Fail1.52
Fail
Fail 29 Fail 204
#9c9 Sample Fail1.56
Fail
Fail 35 Fail 255
#9cc Sample Fail1.62
Fail
Fail 41 Fail 306
#9cf Sample Fail1.69
Fail
Fail 46 Fail 357
#9f0 Sample Fail2.27
Fail
Fail 47 Fail 357
#9f3 Sample Fail2.27
Fail
Fail 53 Fail 306
#9f6 Sample Fail2.29
Fail
Fail 59 Fail 255
#9f9 Sample Fail2.33
Fail
Fail 65 Fail 306
#9fc Sample Fail2.39
Fail
Fail 70 Fail 357
#9ff Sample Fail2.46
Fail
Fail 76 Fail 408
#c00 Sample Fail2.06
Fail
Fail 86 Fail 255
#c03 Sample Fail2.03
Fail
Fail 80 Fail 204
#c06 Sample Fail1.95
Fail
Fail 75 Fail 153
#c09 Sample Fail1.82
Fail
Fail 69 Fail 204
#c0c Sample Fail1.65
Fail
Fail 63 Fail 255
#c0f Sample Fail1.47
Fail
Fail 57 Fail 306
#c30 Sample Fail1.82
Fail
Fail 56 Fail 204
#c33 Sample Fail1.80
Fail
Fail 51 Fail 153
#c36 Sample Fail1.74
Fail
Fail 45 Fail 102
#c39 Sample Fail1.63
Fail
Fail 39 Fail 153
#c3c Sample Fail1.49
Fail
Fail 33 Fail 204
#c3f Sample Fail1.34
Fail
Fail 27 Fail 255
#c60 Sample Fail1.34
Fail
Fail 26 Fail 153
#c63 Sample Fail1.33
Fail
Fail 21 Fail 102
#c66 Sample Fail1.30
Fail
Fail 15 Fail 51
#c69 Sample Fail1.24
Fail
Fail 9 Fail 102
#c6c Sample Fail1.16
Fail
Fail 3 Fail 153
#c6f Sample Fail1.06
Fail
Fail 2 Fail 204
#c90 Sample Fail1.11
Fail
Fail 3 Fail 204
#c93 Sample Fail1.11
Fail
Fail 8 Fail 153
#c96 Sample Fail1.13
Fail
Fail 14 Fail 102
#c99 Sample Fail1.17
Fail
Fail 20 Fail 153
#c9c Sample Fail1.22
Fail
Fail 26 Fail 204
#c9f Sample Fail1.30
Fail
Fail 32 Fail 255
#cc0 Sample Fail1.66
Fail
Fail 32 Fail 255
#cc3 Sample Fail1.67
Fail
Fail 38 Fail 204
#cc6 Sample Fail1.69
Fail
Fail 44 Fail 153
#cc9 Sample Fail1.72
Fail
Fail 50 Fail 204
#ccc Sample Fail1.78
Fail
Fail 56 Fail 255
#ccf Sample Fail1.86
Fail
Fail 62 Fail 306
#cf0 Sample Fail2.43
Fail
Fail 62 Fail 306
#cf3 Sample Fail2.44
Fail
Fail 68 Fail 255
#cf6 Sample Fail2.46
Fail
Fail 74 Fail 204
#cf9 Sample Fail2.50
Fail
Fail 80 Fail 255
#cfc Sample Fail2.55
Fail
Fail 86 Fail 306
#cff Sample Fail2.63
Fail
Fail 92 Fail 357
#f00 Sample Fail1.40
Fail
Fail 71 Fail 204
#f03 Sample Fail1.39
Fail
Fail 65 Fail 153
#f06 Sample Fail1.35
Fail
Fail 59 Fail 102
#f09 Sample Fail1.29
Fail
Fail 54 Fail 153
#f0c Sample Fail1.20
Fail
Fail 48 Fail 204
#f0f Sample Fail1.10
Fail
Fail 42 Fail 255
#f30 Sample Fail1.28
Fail
Fail 41 Fail 153
#f33 Sample Fail1.27
Fail
Fail 35 Fail 102
#f36 Sample Fail1.24
Fail
Fail 29 Fail 51
#f39 Sample Fail1.19
Fail
Fail 24 Fail 102
#f3c Sample Fail1.11
Fail
Fail 18 Fail 153
#f3f Sample Fail1.02
Fail
Fail 12 Fail 204
#f60 Sample Fail1.03
Fail
Fail 11 Fail 102
#f63 Sample Fail1.02
Fail
Fail 5 Fail 51
#f66 Sample Fail1.00
Fail
Fail 0 Fail 0
#f69 Sample Fail1.04
Fail
Fail 5 Fail 51
#f6c Sample Fail1.09
Fail
Fail 11 Fail 102
#f6f Sample Fail1.17
Fail
Fail 17 Fail 153
#f90 Sample Fail1.34
Fail
Fail 18 Fail 153
#f93 Sample Fail1.34
Fail
Fail 24 Fail 102
#f96 Sample Fail1.36
Fail
Fail 29 Fail 51
#f99 Sample Fail1.40
Fail
Fail 35 Fail 102
#f9c Sample Fail1.45
Fail
Fail 41 Fail 153
#f9f Sample Fail1.53
Fail
Fail 47 Fail 204
#fc0 Sample Fail1.89
Fail
Fail 48 Fail 204
#fc3 Sample Fail1.90
Fail
Fail 54 Fail 153
#fc6 Sample Fail1.92
Fail
Fail 59 Fail 102
#fc9 Sample Fail1.95
Fail
Fail 65 Fail 153
#fcc Sample Fail2.01
Fail
Fail 71 Fail 204
#fcf Sample Fail2.09
Fail
Fail 77 Fail 255
#ff0 Sample Fail2.66
Fail
Fail 78 Fail 255
#ff3 Sample Fail2.67
Fail
Fail 83 Fail 204
#ff6 Sample Fail2.69
Fail
Fail 89 Fail 153
#ff9 Sample Fail2.73
Fail
Fail 95 Fail 204
#ffc Sample Fail2.78
Fail
Fail 101 Fail 255
#fff Sample Fail2.86
Fail
Fail 107 Fail 306

Other Background Colour Combinations

Examine luminosity contrast ratios with other web safe backround colours.