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 #0f9

The following table shows the luminosity contrast ratios for all web safe colours with a background colour of #0f9, along with the difference in brightness and the difference in colour used by the colour contrast analyser for comparison.

Luminosity Ratios with background: #0f9
Foreground Colour Sample Luminosity Contrast Ratio Difference in Brightness Difference in Colour
#000 Sample Pass Level AAA for large text15.76
Pass Level AAA for regular text
Pass 167 Fail 408
#003 Sample Pass Level AAA for large text15.04
Pass Level AAA for regular text
Pass 161 Fail 357
#006 Sample Pass Level AAA for large text13.23
Pass Level AAA for regular text
Pass 155 Fail 306
#009 Sample Pass Level AAA for large text10.80
Pass Level AAA for regular text
Pass 149 Fail 255
#00c Sample Pass Level AAA for large text8.42
Pass Level AAA for regular text
Pass 143 Fail 306
#00f Sample Pass Level AAA for large text6.45
Pass level 2 fo regular text
Pass 138 Fail 357
#030 Sample Pass Level AAA for large text10.70
Pass Level AAA for regular text
Pass 137 Fail 357
#033 Sample Pass Level AAA for large text10.36
Pass Level AAA for regular text
Pass 131 Fail 306
#036 Sample Pass Level AAA for large text9.47
Pass Level AAA for regular text
Fail 125 Fail 255
#039 Sample Pass Level AAA for large text8.15
Pass Level AAA for regular text
Fail 119 Fail 204
#03c Sample Pass Level AAA for large text6.72
Pass level 2 fo regular text
Fail 113 Fail 255
#03f Sample Pass Level AAA for large text5.40
Pass level 2 fo regular text
Fail 108 Fail 306
#060 Sample Pass Level AAA for large text5.43
Pass level 2 fo regular text
Fail 107 Fail 306
#063 Sample Pass Level AAA for large text5.35
Pass level 2 fo regular text
Fail 101 Fail 255
#066 Sample Pass Level AAA for large text5.10
Pass level 2 fo regular text
Fail 95 Fail 204
#069 Sample Pass Level AAA for large text4.69
Pass level 2 fo regular text
Fail 89 Fail 153
#06c Sample Pass Level AA for large text4.18
Fail fo regular text
Fail 83 Fail 204
#06f Sample Pass Level AA for large text3.63
Fail fo regular text
Fail 78 Fail 255
#090 Sample Fail2.84
Fail
Fail 77 Fail 255
#093 Sample Fail2.81
Fail
Fail 71 Fail 204
#096 Sample Fail2.74
Fail
Fail 65 Fail 153
#099 Sample Fail2.62
Fail
Fail 59 Fail 102
#09c Sample Fail2.45
Fail
Fail 54 Fail 153
#09f Sample Fail2.25
Fail
Fail 48 Fail 204
#0c0 Sample Fail1.64
Fail
Fail 47 Fail 204
#0c3 Sample Fail1.63
Fail
Fail 41 Fail 153
#0c6 Sample Fail1.60
Fail
Fail 35 Fail 102
#0c9 Sample Fail1.56
Fail
Fail 29 Fail 51
#0cc Sample Fail1.50
Fail
Fail 24 Fail 102
#0cf Sample Fail1.42
Fail
Fail 18 Fail 153
#0f0 Sample Fail1.03
Fail
Fail 17 Fail 153
#0f3 Sample Fail1.03
Fail
Fail 11 Fail 102
#0f6 Sample Fail1.02
Fail
Fail 5 Fail 51
#0f9 Sample Fail1.00
Fail
Fail 0 Fail 0
#0fc Sample Fail1.03
Fail
Fail 5 Fail 51
#0ff Sample Fail1.06
Fail
Fail 11 Fail 102
#300 Sample Pass Level AAA for large text13.82
Pass Level AAA for regular text
Pass 151 Fail 459
#303 Sample Pass Level AAA for large text13.26
Pass Level AAA for regular text
Pass 146 Fail 408
#306 Sample Pass Level AAA for large text11.83
Pass Level AAA for regular text
Pass 140 Fail 357
#309 Sample Pass Level AAA for large text9.85
Pass Level AAA for regular text
Pass 134 Fail 306
#30c Sample Pass Level AAA for large text7.83
Pass Level AAA for regular text
Pass 128 Fail 357
#30f Sample Pass Level AAA for large text6.10
Pass level 2 fo regular text
Fail 122 Fail 408
#330 Sample Pass Level AAA for large text9.77
Pass Level AAA for regular text
Fail 121 Fail 408
#333 Sample Pass Level AAA for large text9.48
Pass Level AAA for regular text
Fail 116 Fail 357
#336 Sample Pass Level AAA for large text8.73
Pass Level AAA for regular text
Fail 110 Fail 306
#339 Sample Pass Level AAA for large text7.60
Pass Level AAA for regular text
Fail 104 Fail 255
#33c Sample Pass Level AAA for large text6.34
Pass level 2 fo regular text
Fail 98 Fail 306
#33f Sample Pass Level AAA for large text5.15
Pass level 2 fo regular text
Fail 92 Fail 357
#360 Sample Pass Level AAA for large text5.18
Pass level 2 fo regular text
Fail 92 Fail 357
#363 Sample Pass Level AAA for large text5.10
Pass level 2 fo regular text
Fail 86 Fail 306
#366 Sample Pass Level AAA for large text4.88
Pass level 2 fo regular text
Fail 80 Fail 255
#369 Sample Pass Level AAA for large text4.50
Pass level 2 fo regular text
Fail 74 Fail 204
#36c Sample Pass Level AA for large text4.03
Fail fo regular text
Fail 68 Fail 255
#36f Sample Pass Level AA for large text3.51
Fail fo regular text
Fail 62 Fail 306
#390 Sample Fail2.77
Fail
Fail 62 Fail 306
#393 Sample Fail2.74
Fail
Fail 56 Fail 255
#396 Sample Fail2.68
Fail
Fail 50 Fail 204
#399 Sample Fail2.56
Fail
Fail 44 Fail 153
#39c Sample Fail2.40
Fail
Fail 38 Fail 204
#39f Sample Fail2.21
Fail
Fail 32 Fail 255
#3c0 Sample Fail1.61
Fail
Fail 32 Fail 255
#3c3 Sample Fail1.60
Fail
Fail 26 Fail 204
#3c6 Sample Fail1.58
Fail
Fail 20 Fail 153
#3c9 Sample Fail1.54
Fail
Fail 14 Fail 102
#3cc Sample Fail1.48
Fail
Fail 8 Fail 153
#3cf Sample Fail1.40
Fail
Fail 3 Fail 204
#3f0 Sample Fail1.02
Fail
Fail 2 Fail 204
#3f3 Sample Fail1.02
Fail
Fail 3 Fail 153
#3f6 Sample Fail1.01
Fail
Fail 9 Fail 102
#3f9 Sample Fail1.01
Fail
Fail 15 Fail 51
#3fc Sample Fail1.04
Fail
Fail 21 Fail 102
#3ff Sample Fail1.07
Fail
Fail 26 Fail 153
#600 Sample Pass Level AAA for large text10.07
Pass Level AAA for regular text
Pass 136 Pass 510
#603 Sample Pass Level AAA for large text9.77
Pass Level AAA for regular text
Pass 130 Fail 459
#606 Sample Pass Level AAA for large text8.97
Pass Level AAA for regular text
Fail 125 Fail 408
#609 Sample Pass Level AAA for large text7.78
Pass Level AAA for regular text
Fail 119 Fail 357
#60c Sample Pass Level AAA for large text6.47
Pass level 2 fo regular text
Fail 113 Fail 408
#60f Sample Pass Level AAA for large text5.24
Pass level 2 fo regular text
Fail 107 Fail 459
#630 Sample Pass Level AAA for large text7.73
Pass Level AAA for regular text
Fail 106 Fail 459
#633 Sample Pass Level AAA for large text7.56
Pass Level AAA for regular text
Fail 100 Fail 408
#636 Sample Pass Level AAA for large text7.07
Pass Level AAA for regular text
Fail 95 Fail 357
#639 Sample Pass Level AAA for large text6.31
Pass level 2 fo regular text
Fail 89 Fail 306
#63c Sample Pass Level AAA for large text5.42
Pass level 2 fo regular text
Fail 83 Fail 357
#63f Sample Pass Level AAA for large text4.53
Pass level 2 fo regular text
Fail 77 Fail 408
#660 Sample Pass Level AAA for large text4.55
Pass level 2 fo regular text
Fail 76 Fail 408
#663 Sample Pass Level AA for large text4.49
Fail fo regular text
Fail 70 Fail 357
#666 Sample Pass Level AA for large text4.31
Fail fo regular text
Fail 65 Fail 306
#669 Sample Pass Level AA for large text4.02
Fail fo regular text
Fail 59 Fail 255
#66c Sample Pass Level AA for large text3.63
Fail fo regular text
Fail 53 Fail 306
#66f Sample Pass Level AA for large text3.21
Fail fo regular text
Fail 47 Fail 357
#690 Sample Fail2.58
Fail
Fail 46 Fail 357
#693 Sample Fail2.56
Fail
Fail 41 Fail 306
#696 Sample Fail2.50
Fail
Fail 35 Fail 255
#699 Sample Fail2.40
Fail
Fail 29 Fail 204
#69c Sample Fail2.25
Fail
Fail 23 Fail 255
#69f Sample Fail2.08
Fail
Fail 17 Fail 306
#6c0 Sample Fail1.55
Fail
Fail 16 Fail 306
#6c3 Sample Fail1.54
Fail
Fail 11 Fail 255
#6c6 Sample Fail1.52
Fail
Fail 5 Fail 204
#6c9 Sample Fail1.48
Fail
Fail 0 Fail 153
#6cc Sample Fail1.42
Fail
Fail 6 Fail 204
#6cf Sample Fail1.35
Fail
Fail 12 Fail 255
#6f0 Sample Fail1.01
Fail
Fail 13 Fail 255
#6f3 Sample Fail1.01
Fail
Fail 18 Fail 204
#6f6 Sample Fail1.02
Fail
Fail 24 Fail 153
#6f9 Sample Fail1.04
Fail
Fail 30 Fail 102
#6fc Sample Fail1.06
Fail
Fail 36 Fail 153
#6ff Sample Fail1.10
Fail
Fail 42 Fail 204
#900 Sample Pass Level AAA for large text6.70
Pass level 2 fo regular text
Fail 121 Pass 561
#903 Sample Pass Level AAA for large text6.56
Pass level 2 fo regular text
Fail 115 Pass 510
#906 Sample Pass Level AAA for large text6.19
Pass level 2 fo regular text
Fail 109 Fail 459
#909 Sample Pass Level AAA for large text5.60
Pass level 2 fo regular text
Fail 103 Fail 408
#90c Sample Pass Level AAA for large text4.89
Pass level 2 fo regular text
Fail 98 Fail 459
#90f Sample Pass Level AA for large text4.15
Fail fo regular text
Fail 92 Pass 510
#930 Sample Pass Level AAA for large text5.57
Pass level 2 fo regular text
Fail 91 Pass 510
#933 Sample Pass Level AAA for large text5.48
Pass level 2 fo regular text
Fail 85 Fail 459
#936 Sample Pass Level AAA for large text5.22
Pass level 2 fo regular text
Fail 79 Fail 408
#939 Sample Pass Level AAA for large text4.79
Pass level 2 fo regular text
Fail 74 Fail 357
#93c Sample Pass Level AA for large text4.26
Fail fo regular text
Fail 68 Fail 408
#93f Sample Pass Level AA for large text3.69
Fail fo regular text
Fail 62 Fail 459
#960 Sample Pass Level AA for large text3.70
Fail fo regular text
Fail 61 Fail 459
#963 Sample Pass Level AA for large text3.66
Fail fo regular text
Fail 55 Fail 408
#966 Sample Pass Level AA for large text3.54
Fail fo regular text
Fail 49 Fail 357
#969 Sample Pass Level AA for large text3.34
Fail fo regular text
Fail 44 Fail 306
#96c Sample Pass Level AA for large text3.07
Fail fo regular text
Fail 38 Fail 357
#96f Sample Fail2.77
Fail
Fail 32 Fail 408
#990 Sample Fail2.28
Fail
Fail 31 Fail 408
#993 Sample Fail2.27
Fail
Fail 25 Fail 357
#996 Sample Fail2.22
Fail
Fail 19 Fail 306
#999 Sample Fail2.14
Fail
Fail 14 Fail 255
#99c Sample Fail2.03
Fail
Fail 8 Fail 306
#99f Sample Fail1.89
Fail
Fail 2 Fail 357
#9c0 Sample Fail1.43
Fail
Fail 1 Fail 357
#9c3 Sample Fail1.43
Fail
Fail 4 Fail 306
#9c6 Sample Fail1.41
Fail
Fail 9 Fail 255
#9c9 Sample Fail1.38
Fail
Fail 15 Fail 204
#9cc Sample Fail1.33
Fail
Fail 21 Fail 255
#9cf Sample Fail1.27
Fail
Fail 27 Fail 306
#9f0 Sample Fail1.06
Fail
Fail 28 Fail 306
#9f3 Sample Fail1.06
Fail
Fail 34 Fail 255
#9f6 Sample Fail1.07
Fail
Fail 39 Fail 204
#9f9 Sample Fail1.09
Fail
Fail 45 Fail 153
#9fc Sample Fail1.11
Fail
Fail 51 Fail 204
#9ff Sample Fail1.15
Fail
Fail 57 Fail 255
#c00 Sample Pass Level AA for large text4.42
Fail fo regular text
Fail 106 Pass 612
#c03 Sample Pass Level AA for large text4.36
Fail fo regular text
Fail 100 Pass 561
#c06 Sample Pass Level AA for large text4.19
Fail fo regular text
Fail 94 Pass 510
#c09 Sample Pass Level AA for large text3.91
Fail fo regular text
Fail 88 Fail 459
#c0c Sample Pass Level AA for large text3.55
Fail fo regular text
Fail 82 Pass 510
#c0f Sample Pass Level AA for large text3.15
Fail fo regular text
Fail 77 Pass 561
#c30 Sample Pass Level AA for large text3.90
Fail fo regular text
Fail 76 Pass 561
#c33 Sample Pass Level AA for large text3.86
Fail fo regular text
Fail 70 Pass 510
#c36 Sample Pass Level AA for large text3.72
Fail fo regular text
Fail 64 Fail 459
#c39 Sample Pass Level AA for large text3.50
Fail fo regular text
Fail 58 Fail 408
#c3c Sample Pass Level AA for large text3.21
Fail fo regular text
Fail 52 Fail 459
#c3f Sample Fail2.87
Fail
Fail 47 Pass 510
#c60 Sample Fail2.88
Fail
Fail 46 Pass 510
#c63 Sample Fail2.86
Fail
Fail 40 Fail 459
#c66 Sample Fail2.79
Fail
Fail 34 Fail 408
#c69 Sample Fail2.66
Fail
Fail 28 Fail 357
#c6c Sample Fail2.49
Fail
Fail 23 Fail 408
#c6f Sample Fail2.28
Fail
Fail 17 Fail 459
#c90 Sample Fail1.94
Fail
Fail 16 Fail 459
#c93 Sample Fail1.93
Fail
Fail 10 Fail 408
#c96 Sample Fail1.90
Fail
Fail 4 Fail 357
#c99 Sample Fail1.84
Fail
Fail 1 Fail 306
#c9c Sample Fail1.75
Fail
Fail 6 Fail 357
#c9f Sample Fail1.65
Fail
Fail 12 Fail 408
#cc0 Sample Fail1.29
Fail
Fail 13 Fail 408
#cc3 Sample Fail1.29
Fail
Fail 19 Fail 357
#cc6 Sample Fail1.27
Fail
Fail 25 Fail 306
#cc9 Sample Fail1.24
Fail
Fail 31 Fail 255
#ccc Sample Fail1.21
Fail
Fail 36 Fail 306
#ccf Sample Fail1.15
Fail
Fail 42 Fail 357
#cf0 Sample Fail1.13
Fail
Fail 43 Fail 357
#cf3 Sample Fail1.14
Fail
Fail 49 Fail 306
#cf6 Sample Fail1.15
Fail
Fail 55 Fail 255
#cf9 Sample Fail1.16
Fail
Fail 60 Fail 204
#cfc Sample Fail1.19
Fail
Fail 66 Fail 255
#cff Sample Fail1.23
Fail
Fail 72 Fail 306
#f00 Sample Pass Level AA for large text3.00
Fail fo regular text
Fail 90 Pass 663
#f03 Sample Fail2.97
Fail
Fail 85 Pass 612
#f06 Sample Fail2.90
Fail
Fail 79 Pass 561
#f09 Sample Fail2.76
Fail
Fail 73 Pass 510
#f0c Sample Fail2.57
Fail
Fail 67 Pass 561
#f0f Sample Fail2.35
Fail
Fail 61 Pass 612
#f30 Sample Fail2.75
Fail
Fail 60 Pass 612
#f33 Sample Fail2.73
Fail
Fail 55 Pass 561
#f36 Sample Fail2.66
Fail
Fail 49 Pass 510
#f39 Sample Fail2.55
Fail
Fail 43 Fail 459
#f3c Sample Fail2.39
Fail
Fail 37 Pass 510
#f3f Sample Fail2.20
Fail
Fail 31 Pass 561
#f60 Sample Fail2.20
Fail
Fail 31 Pass 561
#f63 Sample Fail2.19
Fail
Fail 25 Pass 510
#f66 Sample Fail2.15
Fail
Fail 19 Fail 459
#f69 Sample Fail2.07
Fail
Fail 13 Fail 408
#f6c Sample Fail1.96
Fail
Fail 7 Fail 459
#f6f Sample Fail1.83
Fail
Fail 1 Pass 510
#f90 Sample Fail1.61
Fail
Fail 1 Pass 510
#f93 Sample Fail1.60
Fail
Fail 4 Fail 459
#f96 Sample Fail1.58
Fail
Fail 10 Fail 408
#f99 Sample Fail1.54
Fail
Fail 16 Fail 357
#f9c Sample Fail1.48
Fail
Fail 22 Fail 408
#f9f Sample Fail1.40
Fail
Fail 27 Fail 459
#fc0 Sample Fail1.13
Fail
Fail 28 Fail 459
#fc3 Sample Fail1.13
Fail
Fail 34 Fail 408
#fc6 Sample Fail1.12
Fail
Fail 40 Fail 357
#fc9 Sample Fail1.10
Fail
Fail 46 Fail 306
#fcc Sample Fail1.07
Fail
Fail 52 Fail 357
#fcf Sample Fail1.03
Fail
Fail 57 Fail 408
#ff0 Sample Fail1.24
Fail
Fail 58 Fail 408
#ff3 Sample Fail1.24
Fail
Fail 64 Fail 357
#ff6 Sample Fail1.25
Fail
Fail 70 Fail 306
#ff9 Sample Fail1.27
Fail
Fail 76 Fail 255
#ffc Sample Fail1.30
Fail
Fail 82 Fail 306
#fff Sample Fail1.33
Fail
Fail 87 Fail 357

Other Background Colour Combinations

Examine luminosity contrast ratios with other web safe backround colours.