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 #63c

The following table shows the luminosity contrast ratios for all web safe colours with a background colour of #63c, along with the difference in brightness and the difference in colour used by the colour contrast analyser for comparison.

Luminosity Ratios with background: #63c
Foreground Colour Sample Luminosity Contrast Ratio Difference in Brightness Difference in Colour
#000 Sample Fail2.91
Fail
Fail 83 Fail 357
#003 Sample Fail2.78
Fail
Fail 77 Fail 306
#006 Sample Fail2.44
Fail
Fail 72 Fail 255
#009 Sample Fail1.99
Fail
Fail 66 Fail 204
#00c Sample Fail1.55
Fail
Fail 60 Fail 153
#00f Sample Fail1.19
Fail
Fail 54 Fail 204
#030 Sample Fail1.98
Fail
Fail 53 Fail 306
#033 Sample Fail1.91
Fail
Fail 47 Fail 255
#036 Sample Fail1.75
Fail
Fail 42 Fail 204
#039 Sample Fail1.51
Fail
Fail 36 Fail 153
#03c Sample Fail1.24
Fail
Fail 30 Fail 102
#03f Sample Fail1.00
Fail
Fail 24 Fail 153
#060 Sample Fail1.00
Fail
Fail 23 Fail 357
#063 Sample Fail1.01
Fail
Fail 18 Fail 306
#066 Sample Fail1.06
Fail
Fail 12 Fail 255
#069 Sample Fail1.15
Fail
Fail 6 Fail 204
#06c Sample Fail1.30
Fail
Fail 0 Fail 153
#06f Sample Fail1.49
Fail
Fail 5 Fail 204
#090 Sample Fail1.91
Fail
Fail 6 Fail 408
#093 Sample Fail1.93
Fail
Fail 11 Fail 357
#096 Sample Fail1.98
Fail
Fail 17 Fail 306
#099 Sample Fail2.07
Fail
Fail 23 Fail 255
#09c Sample Fail2.21
Fail
Fail 29 Fail 204
#09f Sample Fail2.41
Fail
Fail 35 Fail 255
#0c0 Sample Pass Level AA for large text3.31
Fail fo regular text
Fail 36 Fail 459
#0c3 Sample Pass Level AA for large text3.33
Fail fo regular text
Fail 41 Fail 408
#0c6 Sample Pass Level AA for large text3.38
Fail fo regular text
Fail 47 Fail 357
#0c9 Sample Pass Level AA for large text3.47
Fail fo regular text
Fail 53 Fail 306
#0cc Sample Pass Level AA for large text3.61
Fail fo regular text
Fail 59 Fail 255
#0cf Sample Pass Level AA for large text3.81
Fail fo regular text
Fail 65 Fail 306
#0f0 Sample Pass Level AAA for large text5.26
Pass level 2 fo regular text
Fail 65 Pass 510
#0f3 Sample Pass Level AAA for large text5.27
Pass level 2 fo regular text
Fail 71 Fail 459
#0f6 Sample Pass Level AAA for large text5.32
Pass level 2 fo regular text
Fail 77 Fail 408
#0f9 Sample Pass Level AAA for large text5.42
Pass level 2 fo regular text
Fail 83 Fail 357
#0fc Sample Pass Level AAA for large text5.56
Pass level 2 fo regular text
Fail 89 Fail 306
#0ff Sample Pass Level AAA for large text5.75
Pass level 2 fo regular text
Fail 95 Fail 357
#300 Sample Fail2.55
Fail
Fail 68 Fail 306
#303 Sample Fail2.45
Fail
Fail 62 Fail 255
#306 Sample Fail2.18
Fail
Fail 56 Fail 204
#309 Sample Fail1.82
Fail
Fail 51 Fail 153
#30c Sample Fail1.45
Fail
Fail 45 Fail 102
#30f Sample Fail1.13
Fail
Fail 39 Fail 153
#330 Sample Fail1.80
Fail
Fail 38 Fail 255
#333 Sample Fail1.75
Fail
Fail 32 Fail 204
#336 Sample Fail1.61
Fail
Fail 26 Fail 153
#339 Sample Fail1.40
Fail
Fail 21 Fail 102
#33c Sample Fail1.17
Fail
Fail 15 Fail 51
#33f Sample Fail1.05
Fail
Fail 9 Fail 102
#360 Sample Fail1.04
Fail
Fail 8 Fail 306
#363 Sample Fail1.06
Fail
Fail 2 Fail 255
#366 Sample Fail1.11
Fail
Fail 3 Fail 204
#369 Sample Fail1.20
Fail
Fail 8 Fail 153
#36c Sample Fail1.34
Fail
Fail 14 Fail 102
#36f Sample Fail1.54
Fail
Fail 20 Fail 153
#390 Sample Fail1.96
Fail
Fail 21 Fail 357
#393 Sample Fail1.97
Fail
Fail 27 Fail 306
#396 Sample Fail2.02
Fail
Fail 32 Fail 255
#399 Sample Fail2.12
Fail
Fail 38 Fail 204
#39c Sample Fail2.26
Fail
Fail 44 Fail 153
#39f Sample Fail2.45
Fail
Fail 50 Fail 204
#3c0 Sample Pass Level AA for large text3.36
Fail fo regular text
Fail 51 Fail 408
#3c3 Sample Pass Level AA for large text3.38
Fail fo regular text
Fail 57 Fail 357
#3c6 Sample Pass Level AA for large text3.43
Fail fo regular text
Fail 62 Fail 306
#3c9 Sample Pass Level AA for large text3.52
Fail fo regular text
Fail 68 Fail 255
#3cc Sample Pass Level AA for large text3.66
Fail fo regular text
Fail 74 Fail 204
#3cf Sample Pass Level AA for large text3.86
Fail fo regular text
Fail 80 Fail 255
#3f0 Sample Pass Level AAA for large text5.31
Pass level 2 fo regular text
Fail 81 Fail 459
#3f3 Sample Pass Level AAA for large text5.32
Pass level 2 fo regular text
Fail 87 Fail 408
#3f6 Sample Pass Level AAA for large text5.37
Pass level 2 fo regular text
Fail 92 Fail 357
#3f9 Sample Pass Level AAA for large text5.46
Pass level 2 fo regular text
Fail 98 Fail 306
#3fc Sample Pass Level AAA for large text5.61
Pass level 2 fo regular text
Fail 104 Fail 255
#3ff Sample Pass Level AAA for large text5.80
Pass level 2 fo regular text
Fail 110 Fail 306
#600 Sample Fail1.86
Fail
Fail 53 Fail 255
#603 Sample Fail1.80
Fail
Fail 47 Fail 204
#606 Sample Fail1.66
Fail
Fail 41 Fail 153
#609 Sample Fail1.44
Fail
Fail 35 Fail 102
#60c Sample Fail1.19
Fail
Fail 29 Fail 51
#60f Sample Fail1.03
Fail
Fail 24 Fail 102
#630 Sample Fail1.43
Fail
Fail 23 Fail 204
#633 Sample Fail1.40
Fail
Fail 17 Fail 153
#636 Sample Fail1.30
Fail
Fail 11 Fail 102
#639 Sample Fail1.16
Fail
Fail 5 Fail 51
#63c Sample Fail1.00
Fail
Fail 0 Fail 0
#63f Sample Fail1.20
Fail
Fail 5 Fail 51
#660 Sample Fail1.19
Fail
Fail 6 Fail 255
#663 Sample Fail1.21
Fail
Fail 12 Fail 204
#666 Sample Fail1.26
Fail
Fail 18 Fail 153
#669 Sample Fail1.35
Fail
Fail 24 Fail 102
#66c Sample Fail1.49
Fail
Fail 29 Fail 51
#66f Sample Fail1.69
Fail
Fail 35 Fail 102
#690 Sample Fail2.10
Fail
Fail 36 Fail 306
#693 Sample Fail2.12
Fail
Fail 42 Fail 255
#696 Sample Fail2.17
Fail
Fail 48 Fail 204
#699 Sample Fail2.26
Fail
Fail 54 Fail 153
#69c Sample Fail2.40
Fail
Fail 59 Fail 102
#69f Sample Fail2.60
Fail
Fail 65 Fail 153
#6c0 Sample Pass Level AA for large text3.51
Fail fo regular text
Fail 66 Fail 357
#6c3 Sample Pass Level AA for large text3.52
Fail fo regular text
Fail 72 Fail 306
#6c6 Sample Pass Level AA for large text3.57
Fail fo regular text
Fail 78 Fail 255
#6c9 Sample Pass Level AA for large text3.66
Fail fo regular text
Fail 83 Fail 204
#6cc Sample Pass Level AA for large text3.80
Fail fo regular text
Fail 89 Fail 153
#6cf Sample Pass Level AA for large text4.00
Fail fo regular text
Fail 95 Fail 204
#6f0 Sample Pass Level AAA for large text5.45
Pass level 2 fo regular text
Fail 96 Fail 408
#6f3 Sample Pass Level AAA for large text5.47
Pass level 2 fo regular text
Fail 102 Fail 357
#6f6 Sample Pass Level AAA for large text5.52
Pass level 2 fo regular text
Fail 108 Fail 306
#6f9 Sample Pass Level AAA for large text5.61
Pass level 2 fo regular text
Fail 113 Fail 255
#6fc Sample Pass Level AAA for large text5.75
Pass level 2 fo regular text
Fail 119 Fail 204
#6ff Sample Pass Level AAA for large text5.95
Pass level 2 fo regular text
Fail 125 Fail 255
#900 Sample Fail1.24
Fail
Fail 37 Fail 306
#903 Sample Fail1.21
Fail
Fail 32 Fail 255
#906 Sample Fail1.14
Fail
Fail 26 Fail 204
#909 Sample Fail1.03
Fail
Fail 20 Fail 153
#90c Sample Fail1.11
Fail
Fail 14 Fail 102
#90f Sample Fail1.31
Fail
Fail 8 Fail 153
#930 Sample Fail1.03
Fail
Fail 8 Fail 255
#933 Sample Fail1.01
Fail
Fail 2 Fail 204
#936 Sample Fail1.04
Fail
Fail 3 Fail 153
#939 Sample Fail1.13
Fail
Fail 9 Fail 102
#93c Sample Fail1.27
Fail
Fail 15 Fail 51
#93f Sample Fail1.47
Fail
Fail 21 Fail 102
#960 Sample Fail1.46
Fail
Fail 21 Fail 306
#963 Sample Fail1.48
Fail
Fail 27 Fail 255
#966 Sample Fail1.53
Fail
Fail 33 Fail 204
#969 Sample Fail1.62
Fail
Fail 39 Fail 153
#96c Sample Fail1.76
Fail
Fail 45 Fail 102
#96f Sample Fail1.96
Fail
Fail 51 Fail 153
#990 Sample Fail2.37
Fail
Fail 51 Fail 357
#993 Sample Fail2.39
Fail
Fail 57 Fail 306
#996 Sample Fail2.44
Fail
Fail 63 Fail 255
#999 Sample Fail2.53
Fail
Fail 69 Fail 204
#99c Sample Fail2.67
Fail
Fail 75 Fail 153
#99f Sample Fail2.87
Fail
Fail 80 Fail 204
#9c0 Sample Pass Level AA for large text3.78
Fail fo regular text
Fail 81 Fail 408
#9c3 Sample Pass Level AA for large text3.79
Fail fo regular text
Fail 87 Fail 357
#9c6 Sample Pass Level AA for large text3.84
Fail fo regular text
Fail 93 Fail 306
#9c9 Sample Pass Level AA for large text3.93
Fail fo regular text
Fail 99 Fail 255
#9cc Sample Pass Level AA for large text4.08
Fail fo regular text
Fail 105 Fail 204
#9cf Sample Pass Level AA for large text4.27
Fail fo regular text
Fail 110 Fail 255
#9f0 Sample Pass Level AAA for large text5.72
Pass level 2 fo regular text
Fail 111 Fail 459
#9f3 Sample Pass Level AAA for large text5.74
Pass level 2 fo regular text
Fail 117 Fail 408
#9f6 Sample Pass Level AAA for large text5.79
Pass level 2 fo regular text
Fail 123 Fail 357
#9f9 Sample Pass Level AAA for large text5.88
Pass level 2 fo regular text
Pass 129 Fail 306
#9fc Sample Pass Level AAA for large text6.02
Pass level 2 fo regular text
Pass 134 Fail 255
#9ff Sample Pass Level AAA for large text6.22
Pass level 2 fo regular text
Pass 140 Fail 306
#c00 Sample Fail1.23
Fail
Fail 22 Fail 357
#c03 Sample Fail1.24
Fail
Fail 16 Fail 306
#c06 Sample Fail1.29
Fail
Fail 11 Fail 255
#c09 Sample Fail1.38
Fail
Fail 5 Fail 204
#c0c Sample Fail1.53
Fail
Fail 0 Fail 153
#c0f Sample Fail1.72
Fail
Fail 6 Fail 204
#c30 Sample Fail1.39
Fail
Fail 7 Fail 306
#c33 Sample Fail1.40
Fail
Fail 13 Fail 255
#c36 Sample Fail1.45
Fail
Fail 18 Fail 204
#c39 Sample Fail1.55
Fail
Fail 24 Fail 153
#c3c Sample Fail1.69
Fail
Fail 30 Fail 102
#c3f Sample Fail1.88
Fail
Fail 36 Fail 153
#c60 Sample Fail1.88
Fail
Fail 37 Fail 357
#c63 Sample Fail1.90
Fail
Fail 42 Fail 306
#c66 Sample Fail1.94
Fail
Fail 48 Fail 255
#c69 Sample Fail2.04
Fail
Fail 54 Fail 204
#c6c Sample Fail2.18
Fail
Fail 60 Fail 153
#c6f Sample Fail2.37
Fail
Fail 66 Fail 204
#c90 Sample Fail2.79
Fail
Fail 67 Fail 408
#c93 Sample Fail2.81
Fail
Fail 72 Fail 357
#c96 Sample Fail2.86
Fail
Fail 78 Fail 306
#c99 Sample Fail2.95
Fail
Fail 84 Fail 255
#c9c Sample Pass Level AA for large text3.09
Fail fo regular text
Fail 90 Fail 204
#c9f Sample Pass Level AA for large text3.29
Fail fo regular text
Fail 96 Fail 255
#cc0 Sample Pass Level AA for large text4.19
Fail fo regular text
Fail 97 Fail 459
#cc3 Sample Pass Level AA for large text4.21
Fail fo regular text
Fail 102 Fail 408
#cc6 Sample Pass Level AA for large text4.26
Fail fo regular text
Fail 108 Fail 357
#cc9 Sample Pass Level AA for large text4.35
Fail fo regular text
Fail 114 Fail 306
#ccc Sample Pass Level AA for large text4.49
Fail fo regular text
Fail 120 Fail 255
#ccf Sample Pass Level AAA for large text4.69
Pass level 2 fo regular text
Pass 126 Fail 306
#cf0 Sample Pass Level AAA for large text6.14
Pass level 2 fo regular text
Pass 126 Pass 510
#cf3 Sample Pass Level AAA for large text6.16
Pass level 2 fo regular text
Pass 132 Fail 459
#cf6 Sample Pass Level AAA for large text6.21
Pass level 2 fo regular text
Pass 138 Fail 408
#cf9 Sample Pass Level AAA for large text6.30
Pass level 2 fo regular text
Pass 144 Fail 357
#cfc Sample Pass Level AAA for large text6.44
Pass level 2 fo regular text
Pass 150 Fail 306
#cff Sample Pass Level AAA for large text6.64
Pass level 2 fo regular text
Pass 156 Fail 357
#f00 Sample Fail1.80
Fail
Fail 7 Fail 408
#f03 Sample Fail1.82
Fail
Fail 1 Fail 357
#f06 Sample Fail1.87
Fail
Fail 4 Fail 306
#f09 Sample Fail1.96
Fail
Fail 9 Fail 255
#f0c Sample Fail2.10
Fail
Fail 15 Fail 204
#f0f Sample Fail2.30
Fail
Fail 21 Fail 255
#f30 Sample Fail1.97
Fail
Fail 22 Fail 357
#f33 Sample Fail1.98
Fail
Fail 28 Fail 306
#f36 Sample Fail2.03
Fail
Fail 34 Fail 255
#f39 Sample Fail2.13
Fail
Fail 39 Fail 204
#f3c Sample Fail2.27
Fail
Fail 45 Fail 153
#f3f Sample Fail2.46
Fail
Fail 51 Fail 204
#f60 Sample Fail2.46
Fail
Fail 52 Fail 408
#f63 Sample Fail2.47
Fail
Fail 58 Fail 357
#f66 Sample Fail2.52
Fail
Fail 64 Fail 306
#f69 Sample Fail2.62
Fail
Fail 69 Fail 255
#f6c Sample Fail2.76
Fail
Fail 75 Fail 204
#f6f Sample Fail2.95
Fail
Fail 81 Fail 255
#f90 Sample Pass Level AA for large text3.37
Fail fo regular text
Fail 82 Fail 459
#f93 Sample Pass Level AA for large text3.39
Fail fo regular text
Fail 88 Fail 408
#f96 Sample Pass Level AA for large text3.44
Fail fo regular text
Fail 93 Fail 357
#f99 Sample Pass Level AA for large text3.53
Fail fo regular text
Fail 99 Fail 306
#f9c Sample Pass Level AA for large text3.67
Fail fo regular text
Fail 105 Fail 255
#f9f Sample Pass Level AA for large text3.87
Fail fo regular text
Fail 111 Fail 306
#fc0 Sample Pass Level AAA for large text4.77
Pass level 2 fo regular text
Fail 112 Pass 510
#fc3 Sample Pass Level AAA for large text4.79
Pass level 2 fo regular text
Fail 118 Fail 459
#fc6 Sample Pass Level AAA for large text4.84
Pass level 2 fo regular text
Fail 123 Fail 408
#fc9 Sample Pass Level AAA for large text4.93
Pass level 2 fo regular text
Pass 129 Fail 357
#fcc Sample Pass Level AAA for large text5.07
Pass level 2 fo regular text
Pass 135 Fail 306
#fcf Sample Pass Level AAA for large text5.27
Pass level 2 fo regular text
Pass 141 Fail 357
#ff0 Sample Pass Level AAA for large text6.72
Pass level 2 fo regular text
Pass 142 Pass 561
#ff3 Sample Pass Level AAA for large text6.74
Pass level 2 fo regular text
Pass 148 Pass 510
#ff6 Sample Pass Level AAA for large text6.79
Pass level 2 fo regular text
Pass 153 Fail 459
#ff9 Sample Pass Level AAA for large text6.88
Pass level 2 fo regular text
Pass 159 Fail 408
#ffc Sample Pass Level AAA for large text7.02
Pass Level AAA for regular text
Pass 165 Fail 357
#fff Sample Pass Level AAA for large text7.22
Pass Level AAA for regular text
Pass 171 Fail 408

Other Background Colour Combinations

Examine luminosity contrast ratios with other web safe backround colours.