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 #066

The following table shows the luminosity contrast ratios for all web safe colours with a background colour of #066, along with the difference in brightness and the difference in colour used by the colour contrast analyser for comparison.

Luminosity Ratios with background: #066
Foreground Colour Sample Luminosity Contrast Ratio Difference in Brightness Difference in Colour
#000 Sample Pass Level AA for large text3.09
Fail fo regular text
Fail 71 Fail 204
#003 Sample Fail2.95
Fail
Fail 65 Fail 153
#006 Sample Fail2.59
Fail
Fail 59 Fail 102
#009 Sample Fail2.12
Fail
Fail 54 Fail 153
#00c Sample Fail1.65
Fail
Fail 48 Fail 204
#00f Sample Fail1.27
Fail
Fail 42 Fail 255
#030 Sample Fail2.10
Fail
Fail 41 Fail 153
#033 Sample Fail2.03
Fail
Fail 35 Fail 102
#036 Sample Fail1.86
Fail
Fail 29 Fail 51
#039 Sample Fail1.60
Fail
Fail 24 Fail 102
#03c Sample Fail1.32
Fail
Fail 18 Fail 153
#03f Sample Fail1.06
Fail
Fail 12 Fail 204
#060 Sample Fail1.07
Fail
Fail 11 Fail 102
#063 Sample Fail1.05
Fail
Fail 5 Fail 51
#066 Sample Fail1.00
Fail
Fail 0 Fail 0
#069 Sample Fail1.09
Fail
Fail 5 Fail 51
#06c Sample Fail1.22
Fail
Fail 11 Fail 102
#06f Sample Fail1.40
Fail
Fail 17 Fail 153
#090 Sample Fail1.80
Fail
Fail 18 Fail 153
#093 Sample Fail1.81
Fail
Fail 24 Fail 102
#096 Sample Fail1.86
Fail
Fail 29 Fail 51
#099 Sample Fail1.95
Fail
Fail 35 Fail 102
#09c Sample Fail2.08
Fail
Fail 41 Fail 153
#09f Sample Fail2.26
Fail
Fail 47 Fail 204
#0c0 Sample Pass Level AA for large text3.12
Fail fo regular text
Fail 48 Fail 204
#0c3 Sample Pass Level AA for large text3.13
Fail fo regular text
Fail 54 Fail 153
#0c6 Sample Pass Level AA for large text3.18
Fail fo regular text
Fail 59 Fail 102
#0c9 Sample Pass Level AA for large text3.27
Fail fo regular text
Fail 65 Fail 153
#0cc Sample Pass Level AA for large text3.40
Fail fo regular text
Fail 71 Fail 204
#0cf Sample Pass Level AA for large text3.58
Fail fo regular text
Fail 77 Fail 255
#0f0 Sample Pass Level AAA for large text4.95
Pass level 2 fo regular text
Fail 78 Fail 255
#0f3 Sample Pass Level AAA for large text4.96
Pass level 2 fo regular text
Fail 83 Fail 204
#0f6 Sample Pass Level AAA for large text5.01
Pass level 2 fo regular text
Fail 89 Fail 153
#0f9 Sample Pass Level AAA for large text5.10
Pass level 2 fo regular text
Fail 95 Fail 204
#0fc Sample Pass Level AAA for large text5.23
Pass level 2 fo regular text
Fail 101 Fail 255
#0ff Sample Pass Level AAA for large text5.42
Pass level 2 fo regular text
Fail 107 Fail 306
#300 Sample Fail2.71
Fail
Fail 56 Fail 255
#303 Sample Fail2.60
Fail
Fail 50 Fail 204
#306 Sample Fail2.32
Fail
Fail 44 Fail 153
#309 Sample Fail1.93
Fail
Fail 38 Fail 204
#30c Sample Fail1.54
Fail
Fail 32 Fail 255
#30f Sample Fail1.20
Fail
Fail 27 Fail 306
#330 Sample Fail1.92
Fail
Fail 26 Fail 204
#333 Sample Fail1.86
Fail
Fail 20 Fail 153
#336 Sample Fail1.71
Fail
Fail 14 Fail 102
#339 Sample Fail1.49
Fail
Fail 8 Fail 153
#33c Sample Fail1.24
Fail
Fail 3 Fail 204
#33f Sample Fail1.01
Fail
Fail 2 Fail 255
#360 Sample Fail1.02
Fail
Fail 3 Fail 153
#363 Sample Fail1.00
Fail
Fail 9 Fail 102
#366 Sample Fail1.05
Fail
Fail 15 Fail 51
#369 Sample Fail1.13
Fail
Fail 21 Fail 102
#36c Sample Fail1.27
Fail
Fail 26 Fail 153
#36f Sample Fail1.45
Fail
Fail 32 Fail 204
#390 Sample Fail1.84
Fail
Fail 33 Fail 204
#393 Sample Fail1.86
Fail
Fail 39 Fail 153
#396 Sample Fail1.90
Fail
Fail 45 Fail 102
#399 Sample Fail1.99
Fail
Fail 51 Fail 153
#39c Sample Fail2.12
Fail
Fail 56 Fail 204
#39f Sample Fail2.31
Fail
Fail 62 Fail 255
#3c0 Sample Pass Level AA for large text3.16
Fail fo regular text
Fail 63 Fail 255
#3c3 Sample Pass Level AA for large text3.18
Fail fo regular text
Fail 69 Fail 204
#3c6 Sample Pass Level AA for large text3.22
Fail fo regular text
Fail 75 Fail 153
#3c9 Sample Pass Level AA for large text3.31
Fail fo regular text
Fail 80 Fail 204
#3cc Sample Pass Level AA for large text3.44
Fail fo regular text
Fail 86 Fail 255
#3cf Sample Pass Level AA for large text3.63
Fail fo regular text
Fail 92 Fail 306
#3f0 Sample Pass Level AAA for large text4.99
Pass level 2 fo regular text
Fail 93 Fail 306
#3f3 Sample Pass Level AAA for large text5.01
Pass level 2 fo regular text
Fail 99 Fail 255
#3f6 Sample Pass Level AAA for large text5.06
Pass level 2 fo regular text
Fail 105 Fail 204
#3f9 Sample Pass Level AAA for large text5.14
Pass level 2 fo regular text
Fail 110 Fail 255
#3fc Sample Pass Level AAA for large text5.28
Pass level 2 fo regular text
Fail 116 Fail 306
#3ff Sample Pass Level AAA for large text5.46
Pass level 2 fo regular text
Fail 122 Fail 357
#600 Sample Fail1.98
Fail
Fail 41 Fail 306
#603 Sample Fail1.92
Fail
Fail 35 Fail 255
#606 Sample Fail1.76
Fail
Fail 29 Fail 204
#609 Sample Fail1.53
Fail
Fail 23 Fail 255
#60c Sample Fail1.27
Fail
Fail 17 Fail 306
#60f Sample Fail1.03
Fail
Fail 11 Fail 357
#630 Sample Fail1.52
Fail
Fail 11 Fail 255
#633 Sample Fail1.48
Fail
Fail 5 Fail 204
#636 Sample Fail1.39
Fail
Fail 0 Fail 153
#639 Sample Fail1.24
Fail
Fail 6 Fail 204
#63c Sample Fail1.06
Fail
Fail 12 Fail 255
#63f Sample Fail1.13
Fail
Fail 18 Fail 306
#660 Sample Fail1.12
Fail
Fail 18 Fail 204
#663 Sample Fail1.14
Fail
Fail 24 Fail 153
#666 Sample Fail1.18
Fail
Fail 30 Fail 102
#669 Sample Fail1.27
Fail
Fail 36 Fail 153
#66c Sample Fail1.40
Fail
Fail 42 Fail 204
#66f Sample Fail1.59
Fail
Fail 47 Fail 255
#690 Sample Fail1.98
Fail
Fail 48 Fail 255
#693 Sample Fail1.99
Fail
Fail 54 Fail 204
#696 Sample Fail2.04
Fail
Fail 60 Fail 153
#699 Sample Fail2.13
Fail
Fail 66 Fail 204
#69c Sample Fail2.26
Fail
Fail 72 Fail 255
#69f Sample Fail2.45
Fail
Fail 77 Fail 306
#6c0 Sample Pass Level AA for large text3.30
Fail fo regular text
Fail 78 Fail 306
#6c3 Sample Pass Level AA for large text3.31
Fail fo regular text
Fail 84 Fail 255
#6c6 Sample Pass Level AA for large text3.36
Fail fo regular text
Fail 90 Fail 204
#6c9 Sample Pass Level AA for large text3.45
Fail fo regular text
Fail 96 Fail 255
#6cc Sample Pass Level AA for large text3.58
Fail fo regular text
Fail 102 Fail 306
#6cf Sample Pass Level AA for large text3.77
Fail fo regular text
Fail 107 Fail 357
#6f0 Sample Pass Level AAA for large text5.13
Pass level 2 fo regular text
Fail 108 Fail 357
#6f3 Sample Pass Level AAA for large text5.15
Pass level 2 fo regular text
Fail 114 Fail 306
#6f6 Sample Pass Level AAA for large text5.19
Pass level 2 fo regular text
Fail 120 Fail 255
#6f9 Sample Pass Level AAA for large text5.28
Pass level 2 fo regular text
Pass 126 Fail 306
#6fc Sample Pass Level AAA for large text5.41
Pass level 2 fo regular text
Pass 131 Fail 357
#6ff Sample Pass Level AAA for large text5.60
Pass level 2 fo regular text
Pass 137 Fail 408
#900 Sample Fail1.31
Fail
Fail 25 Fail 357
#903 Sample Fail1.29
Fail
Fail 19 Fail 306
#906 Sample Fail1.21
Fail
Fail 14 Fail 255
#909 Sample Fail1.10
Fail
Fail 8 Fail 306
#90c Sample Fail1.04
Fail
Fail 2 Fail 357
#90f Sample Fail1.23
Fail
Fail 3 Fail 408
#930 Sample Fail1.09
Fail
Fail 4 Fail 306
#933 Sample Fail1.08
Fail
Fail 9 Fail 255
#936 Sample Fail1.02
Fail
Fail 15 Fail 204
#939 Sample Fail1.06
Fail
Fail 21 Fail 255
#93c Sample Fail1.20
Fail
Fail 27 Fail 306
#93f Sample Fail1.38
Fail
Fail 33 Fail 357
#960 Sample Fail1.38
Fail
Fail 34 Fail 255
#963 Sample Fail1.39
Fail
Fail 39 Fail 204
#966 Sample Fail1.44
Fail
Fail 45 Fail 153
#969 Sample Fail1.52
Fail
Fail 51 Fail 204
#96c Sample Fail1.66
Fail
Fail 57 Fail 255
#96f Sample Fail1.84
Fail
Fail 63 Fail 306
#990 Sample Fail2.23
Fail
Fail 64 Fail 306
#993 Sample Fail2.25
Fail
Fail 69 Fail 255
#996 Sample Fail2.30
Fail
Fail 75 Fail 204
#999 Sample Fail2.38
Fail
Fail 81 Fail 255
#99c Sample Fail2.52
Fail
Fail 87 Fail 306
#99f Sample Fail2.70
Fail
Fail 93 Fail 357
#9c0 Sample Pass Level AA for large text3.55
Fail fo regular text
Fail 93 Fail 357
#9c3 Sample Pass Level AA for large text3.57
Fail fo regular text
Fail 99 Fail 306
#9c6 Sample Pass Level AA for large text3.62
Fail fo regular text
Fail 105 Fail 255
#9c9 Sample Pass Level AA for large text3.70
Fail fo regular text
Fail 111 Fail 306
#9cc Sample Pass Level AA for large text3.84
Fail fo regular text
Fail 117 Fail 357
#9cf Sample Pass Level AA for large text4.02
Fail fo regular text
Fail 123 Fail 408
#9f0 Sample Pass Level AAA for large text5.39
Pass level 2 fo regular text
Fail 123 Fail 408
#9f3 Sample Pass Level AAA for large text5.40
Pass level 2 fo regular text
Pass 129 Fail 357
#9f6 Sample Pass Level AAA for large text5.45
Pass level 2 fo regular text
Pass 135 Fail 306
#9f9 Sample Pass Level AAA for large text5.54
Pass level 2 fo regular text
Pass 141 Fail 357
#9fc Sample Pass Level AAA for large text5.67
Pass level 2 fo regular text
Pass 147 Fail 408
#9ff Sample Pass Level AAA for large text5.85
Pass level 2 fo regular text
Pass 153 Fail 459
#c00 Sample Fail1.15
Fail
Fail 10 Fail 408
#c03 Sample Fail1.17
Fail
Fail 4 Fail 357
#c06 Sample Fail1.22
Fail
Fail 1 Fail 306
#c09 Sample Fail1.30
Fail
Fail 6 Fail 357
#c0c Sample Fail1.44
Fail
Fail 12 Fail 408
#c0f Sample Fail1.62
Fail
Fail 18 Fail 459
#c30 Sample Fail1.31
Fail
Fail 19 Fail 357
#c33 Sample Fail1.32
Fail
Fail 25 Fail 306
#c36 Sample Fail1.37
Fail
Fail 31 Fail 255
#c39 Sample Fail1.46
Fail
Fail 36 Fail 306
#c3c Sample Fail1.59
Fail
Fail 42 Fail 357
#c3f Sample Fail1.77
Fail
Fail 48 Fail 408
#c60 Sample Fail1.77
Fail
Fail 49 Fail 306
#c63 Sample Fail1.78
Fail
Fail 55 Fail 255
#c66 Sample Fail1.83
Fail
Fail 60 Fail 204
#c69 Sample Fail1.92
Fail
Fail 66 Fail 255
#c6c Sample Fail2.05
Fail
Fail 72 Fail 306
#c6f Sample Fail2.24
Fail
Fail 78 Fail 357
#c90 Sample Fail2.63
Fail
Fail 79 Fail 357
#c93 Sample Fail2.64
Fail
Fail 85 Fail 306
#c96 Sample Fail2.69
Fail
Fail 90 Fail 255
#c99 Sample Fail2.78
Fail
Fail 96 Fail 306
#c9c Sample Fail2.91
Fail
Fail 102 Fail 357
#c9f Sample Pass Level AA for large text3.09
Fail fo regular text
Fail 108 Fail 408
#cc0 Sample Pass Level AA for large text3.95
Fail fo regular text
Fail 109 Fail 408
#cc3 Sample Pass Level AA for large text3.96
Fail fo regular text
Fail 115 Fail 357
#cc6 Sample Pass Level AA for large text4.01
Fail fo regular text
Fail 120 Fail 306
#cc9 Sample Pass Level AA for large text4.10
Fail fo regular text
Pass 126 Fail 357
#ccc Sample Pass Level AA for large text4.23
Fail fo regular text
Pass 132 Fail 408
#ccf Sample Pass Level AA for large text4.41
Fail fo regular text
Pass 138 Fail 459
#cf0 Sample Pass Level AAA for large text5.78
Pass level 2 fo regular text
Pass 139 Fail 459
#cf3 Sample Pass Level AAA for large text5.79
Pass level 2 fo regular text
Pass 144 Fail 408
#cf6 Sample Pass Level AAA for large text5.84
Pass level 2 fo regular text
Pass 150 Fail 357
#cf9 Sample Pass Level AAA for large text5.93
Pass level 2 fo regular text
Pass 156 Fail 408
#cfc Sample Pass Level AAA for large text6.06
Pass level 2 fo regular text
Pass 162 Fail 459
#cff Sample Pass Level AAA for large text6.25
Pass level 2 fo regular text
Pass 168 Pass 510
#f00 Sample Fail1.70
Fail
Fail 4 Fail 459
#f03 Sample Fail1.71
Fail
Fail 10 Fail 408
#f06 Sample Fail1.76
Fail
Fail 16 Fail 357
#f09 Sample Fail1.85
Fail
Fail 22 Fail 408
#f0c Sample Fail1.98
Fail
Fail 27 Fail 459
#f0f Sample Fail2.17
Fail
Fail 33 Pass 510
#f30 Sample Fail1.85
Fail
Fail 34 Fail 408
#f33 Sample Fail1.87
Fail
Fail 40 Fail 357
#f36 Sample Fail1.91
Fail
Fail 46 Fail 306
#f39 Sample Fail2.00
Fail
Fail 52 Fail 357
#f3c Sample Fail2.13
Fail
Fail 57 Fail 408
#f3f Sample Fail2.32
Fail
Fail 63 Fail 459
#f60 Sample Fail2.31
Fail
Fail 64 Fail 357
#f63 Sample Fail2.33
Fail
Fail 70 Fail 306
#f66 Sample Fail2.37
Fail
Fail 76 Fail 255
#f69 Sample Fail2.46
Fail
Fail 82 Fail 306
#f6c Sample Fail2.59
Fail
Fail 87 Fail 357
#f6f Sample Fail2.78
Fail
Fail 93 Fail 408
#f90 Sample Pass Level AA for large text3.17
Fail fo regular text
Fail 94 Fail 408
#f93 Sample Pass Level AA for large text3.19
Fail fo regular text
Fail 100 Fail 357
#f96 Sample Pass Level AA for large text3.23
Fail fo regular text
Fail 106 Fail 306
#f99 Sample Pass Level AA for large text3.32
Fail fo regular text
Fail 111 Fail 357
#f9c Sample Pass Level AA for large text3.45
Fail fo regular text
Fail 117 Fail 408
#f9f Sample Pass Level AA for large text3.64
Fail fo regular text
Fail 123 Fail 459
#fc0 Sample Pass Level AA for large text4.49
Fail fo regular text
Fail 124 Fail 459
#fc3 Sample Pass Level AAA for large text4.51
Pass level 2 fo regular text
Pass 130 Fail 408
#fc6 Sample Pass Level AAA for large text4.55
Pass level 2 fo regular text
Pass 136 Fail 357
#fc9 Sample Pass Level AAA for large text4.64
Pass level 2 fo regular text
Pass 141 Fail 408
#fcc Sample Pass Level AAA for large text4.77
Pass level 2 fo regular text
Pass 147 Fail 459
#fcf Sample Pass Level AAA for large text4.96
Pass level 2 fo regular text
Pass 153 Pass 510
#ff0 Sample Pass Level AAA for large text6.32
Pass level 2 fo regular text
Pass 154 Pass 510
#ff3 Sample Pass Level AAA for large text6.34
Pass level 2 fo regular text
Pass 160 Fail 459
#ff6 Sample Pass Level AAA for large text6.39
Pass level 2 fo regular text
Pass 166 Fail 408
#ff9 Sample Pass Level AAA for large text6.47
Pass level 2 fo regular text
Pass 171 Fail 459
#ffc Sample Pass Level AAA for large text6.61
Pass level 2 fo regular text
Pass 177 Pass 510
#fff Sample Pass Level AAA for large text6.79
Pass level 2 fo regular text
Pass 183 Pass 561

Other Background Colour Combinations

Examine luminosity contrast ratios with other web safe backround colours.