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 #39f

The following table shows the luminosity contrast ratios for all web safe colours with a background colour of #39f, along with the difference in brightness and the difference in colour used by the colour contrast analyser for comparison.

Luminosity Ratios with background: #39f
Foreground Colour Sample Luminosity Contrast Ratio Difference in Brightness Difference in Colour
#000 Sample Pass Level AAA for large text7.14
Pass Level AAA for regular text
Pass 134 Fail 459
#003 Sample Pass Level AAA for large text6.82
Pass level 2 fo regular text
Pass 128 Fail 408
#006 Sample Pass Level AAA for large text5.99
Pass level 2 fo regular text
Fail 122 Fail 357
#009 Sample Pass Level AAA for large text4.89
Pass level 2 fo regular text
Fail 116 Fail 306
#00c Sample Pass Level AA for large text3.81
Fail fo regular text
Fail 110 Fail 255
#00f Sample Fail2.92
Fail
Fail 105 Fail 204
#030 Sample Pass Level AAA for large text4.85
Pass level 2 fo regular text
Fail 104 Fail 408
#033 Sample Pass Level AAA for large text4.69
Pass level 2 fo regular text
Fail 98 Fail 357
#036 Sample Pass Level AA for large text4.29
Fail fo regular text
Fail 92 Fail 306
#039 Sample Pass Level AA for large text3.69
Fail fo regular text
Fail 86 Fail 255
#03c Sample Pass Level AA for large text3.04
Fail fo regular text
Fail 80 Fail 204
#03f Sample Fail2.45
Fail
Fail 75 Fail 153
#060 Sample Fail2.46
Fail
Fail 74 Fail 357
#063 Sample Fail2.42
Fail
Fail 68 Fail 306
#066 Sample Fail2.31
Fail
Fail 62 Fail 255
#069 Sample Fail2.13
Fail
Fail 56 Fail 204
#06c Sample Fail1.89
Fail
Fail 51 Fail 153
#06f Sample Fail1.64
Fail
Fail 45 Fail 102
#090 Sample Fail1.29
Fail
Fail 44 Fail 306
#093 Sample Fail1.27
Fail
Fail 38 Fail 255
#096 Sample Fail1.24
Fail
Fail 32 Fail 204
#099 Sample Fail1.19
Fail
Fail 26 Fail 153
#09c Sample Fail1.11
Fail
Fail 21 Fail 102
#09f Sample Fail1.02
Fail
Fail 15 Fail 51
#0c0 Sample Fail1.35
Fail
Fail 14 Fail 357
#0c3 Sample Fail1.36
Fail
Fail 8 Fail 306
#0c6 Sample Fail1.38
Fail
Fail 2 Fail 255
#0c9 Sample Fail1.41
Fail
Fail 3 Fail 204
#0cc Sample Fail1.47
Fail
Fail 8 Fail 153
#0cf Sample Fail1.55
Fail
Fail 14 Fail 102
#0f0 Sample Fail2.14
Fail
Fail 15 Fail 408
#0f3 Sample Fail2.15
Fail
Fail 21 Fail 357
#0f6 Sample Fail2.17
Fail
Fail 27 Fail 306
#0f9 Sample Fail2.21
Fail
Fail 32 Fail 255
#0fc Sample Fail2.27
Fail
Fail 38 Fail 204
#0ff Sample Fail2.35
Fail
Fail 44 Fail 153
#300 Sample Pass Level AAA for large text6.26
Pass level 2 fo regular text
Fail 118 Fail 408
#303 Sample Pass Level AAA for large text6.01
Pass level 2 fo regular text
Fail 113 Fail 357
#306 Sample Pass Level AAA for large text5.36
Pass level 2 fo regular text
Fail 107 Fail 306
#309 Sample Pass Level AA for large text4.46
Fail fo regular text
Fail 101 Fail 255
#30c Sample Pass Level AA for large text3.55
Fail fo regular text
Fail 95 Fail 204
#30f Sample Fail2.76
Fail
Fail 89 Fail 153
#330 Sample Pass Level AA for large text4.42
Fail fo regular text
Fail 88 Fail 357
#333 Sample Pass Level AA for large text4.30
Fail fo regular text
Fail 83 Fail 306
#336 Sample Pass Level AA for large text3.95
Fail fo regular text
Fail 77 Fail 255
#339 Sample Pass Level AA for large text3.44
Fail fo regular text
Fail 71 Fail 204
#33c Sample Fail2.87
Fail
Fail 65 Fail 153
#33f Sample Fail2.34
Fail
Fail 59 Fail 102
#360 Sample Fail2.35
Fail
Fail 59 Fail 306
#363 Sample Fail2.31
Fail
Fail 53 Fail 255
#366 Sample Fail2.21
Fail
Fail 47 Fail 204
#369 Sample Fail2.04
Fail
Fail 41 Fail 153
#36c Sample Fail1.82
Fail
Fail 35 Fail 102
#36f Sample Fail1.59
Fail
Fail 29 Fail 51
#390 Sample Fail1.25
Fail
Fail 29 Fail 255
#393 Sample Fail1.24
Fail
Fail 23 Fail 204
#396 Sample Fail1.21
Fail
Fail 17 Fail 153
#399 Sample Fail1.16
Fail
Fail 11 Fail 102
#39c Sample Fail1.09
Fail
Fail 5 Fail 51
#39f Sample Fail1.00
Fail
Fail 0 Fail 0
#3c0 Sample Fail1.37
Fail
Fail 0 Fail 306
#3c3 Sample Fail1.38
Fail
Fail 6 Fail 255
#3c6 Sample Fail1.40
Fail
Fail 12 Fail 204
#3c9 Sample Fail1.43
Fail
Fail 18 Fail 153
#3cc Sample Fail1.49
Fail
Fail 24 Fail 102
#3cf Sample Fail1.57
Fail
Fail 29 Fail 51
#3f0 Sample Fail2.16
Fail
Fail 30 Fail 357
#3f3 Sample Fail2.17
Fail
Fail 36 Fail 306
#3f6 Sample Fail2.19
Fail
Fail 42 Fail 255
#3f9 Sample Fail2.23
Fail
Fail 48 Fail 204
#3fc Sample Fail2.28
Fail
Fail 54 Fail 153
#3ff Sample Fail2.36
Fail
Fail 59 Fail 102
#600 Sample Pass Level AAA for large text4.56
Pass level 2 fo regular text
Fail 103 Fail 459
#603 Sample Pass Level AA for large text4.43
Fail fo regular text
Fail 97 Fail 408
#606 Sample Pass Level AA for large text4.06
Fail fo regular text
Fail 92 Fail 357
#609 Sample Pass Level AA for large text3.53
Fail fo regular text
Fail 86 Fail 306
#60c Sample Fail2.93
Fail
Fail 80 Fail 255
#60f Sample Fail2.37
Fail
Fail 74 Fail 204
#630 Sample Pass Level AA for large text3.50
Fail fo regular text
Fail 73 Fail 408
#633 Sample Pass Level AA for large text3.42
Fail fo regular text
Fail 67 Fail 357
#636 Sample Pass Level AA for large text3.20
Fail fo regular text
Fail 62 Fail 306
#639 Sample Fail2.86
Fail
Fail 56 Fail 255
#63c Sample Fail2.45
Fail
Fail 50 Fail 204
#63f Sample Fail2.05
Fail
Fail 44 Fail 153
#660 Sample Fail2.06
Fail
Fail 43 Fail 357
#663 Sample Fail2.03
Fail
Fail 37 Fail 306
#666 Sample Fail1.95
Fail
Fail 32 Fail 255
#669 Sample Fail1.82
Fail
Fail 26 Fail 204
#66c Sample Fail1.65
Fail
Fail 20 Fail 153
#66f Sample Fail1.45
Fail
Fail 14 Fail 102
#690 Sample Fail1.17
Fail
Fail 13 Fail 306
#693 Sample Fail1.16
Fail
Fail 8 Fail 255
#696 Sample Fail1.13
Fail
Fail 2 Fail 204
#699 Sample Fail1.09
Fail
Fail 3 Fail 153
#69c Sample Fail1.02
Fail
Fail 9 Fail 102
#69f Sample Fail1.06
Fail
Fail 15 Fail 51
#6c0 Sample Fail1.43
Fail
Fail 16 Fail 357
#6c3 Sample Fail1.44
Fail
Fail 21 Fail 306
#6c6 Sample Fail1.46
Fail
Fail 27 Fail 255
#6c9 Sample Fail1.49
Fail
Fail 33 Fail 204
#6cc Sample Fail1.55
Fail
Fail 39 Fail 153
#6cf Sample Fail1.63
Fail
Fail 45 Fail 102
#6f0 Sample Fail2.22
Fail
Fail 46 Fail 408
#6f3 Sample Fail2.23
Fail
Fail 51 Fail 357
#6f6 Sample Fail2.25
Fail
Fail 57 Fail 306
#6f9 Sample Fail2.29
Fail
Fail 63 Fail 255
#6fc Sample Fail2.34
Fail
Fail 69 Fail 204
#6ff Sample Fail2.42
Fail
Fail 75 Fail 153
#900 Sample Pass Level AA for large text3.03
Fail fo regular text
Fail 88 Pass 510
#903 Sample Fail2.97
Fail
Fail 82 Fail 459
#906 Sample Fail2.80
Fail
Fail 76 Fail 408
#909 Sample Fail2.54
Fail
Fail 70 Fail 357
#90c Sample Fail2.21
Fail
Fail 65 Fail 306
#90f Sample Fail1.88
Fail
Fail 59 Fail 255
#930 Sample Fail2.53
Fail
Fail 58 Fail 459
#933 Sample Fail2.48
Fail
Fail 52 Fail 408
#936 Sample Fail2.36
Fail
Fail 46 Fail 357
#939 Sample Fail2.17
Fail
Fail 41 Fail 306
#93c Sample Fail1.93
Fail
Fail 35 Fail 255
#93f Sample Fail1.67
Fail
Fail 29 Fail 204
#960 Sample Fail1.68
Fail
Fail 28 Fail 408
#963 Sample Fail1.66
Fail
Fail 22 Fail 357
#966 Sample Fail1.61
Fail
Fail 16 Fail 306
#969 Sample Fail1.51
Fail
Fail 11 Fail 255
#96c Sample Fail1.39
Fail
Fail 5 Fail 204
#96f Sample Fail1.25
Fail
Fail 0 Fail 153
#990 Sample Fail1.03
Fail
Fail 1 Fail 357
#993 Sample Fail1.03
Fail
Fail 7 Fail 306
#996 Sample Fail1.01
Fail
Fail 13 Fail 255
#999 Sample Fail1.03
Fail
Fail 18 Fail 204
#99c Sample Fail1.09
Fail
Fail 24 Fail 153
#99f Sample Fail1.17
Fail
Fail 30 Fail 102
#9c0 Sample Fail1.54
Fail
Fail 31 Fail 408
#9c3 Sample Fail1.55
Fail
Fail 37 Fail 357
#9c6 Sample Fail1.57
Fail
Fail 42 Fail 306
#9c9 Sample Fail1.60
Fail
Fail 48 Fail 255
#9cc Sample Fail1.66
Fail
Fail 54 Fail 204
#9cf Sample Fail1.74
Fail
Fail 60 Fail 153
#9f0 Sample Fail2.33
Fail
Fail 61 Fail 459
#9f3 Sample Fail2.34
Fail
Fail 67 Fail 408
#9f6 Sample Fail2.36
Fail
Fail 72 Fail 357
#9f9 Sample Fail2.40
Fail
Fail 78 Fail 306
#9fc Sample Fail2.45
Fail
Fail 84 Fail 255
#9ff Sample Fail2.53
Fail
Fail 90 Fail 204
#c00 Sample Fail2.00
Fail
Fail 73 Pass 561
#c03 Sample Fail1.98
Fail
Fail 67 Pass 510
#c06 Sample Fail1.90
Fail
Fail 61 Fail 459
#c09 Sample Fail1.77
Fail
Fail 55 Fail 408
#c0c Sample Fail1.61
Fail
Fail 49 Fail 357
#c0f Sample Fail1.42
Fail
Fail 44 Fail 306
#c30 Sample Fail1.77
Fail
Fail 43 Pass 510
#c33 Sample Fail1.75
Fail
Fail 37 Fail 459
#c36 Sample Fail1.69
Fail
Fail 31 Fail 408
#c39 Sample Fail1.59
Fail
Fail 25 Fail 357
#c3c Sample Fail1.45
Fail
Fail 19 Fail 306
#c3f Sample Fail1.30
Fail
Fail 14 Fail 255
#c60 Sample Fail1.31
Fail
Fail 13 Fail 459
#c63 Sample Fail1.29
Fail
Fail 7 Fail 408
#c66 Sample Fail1.26
Fail
Fail 1 Fail 357
#c69 Sample Fail1.20
Fail
Fail 4 Fail 306
#c6c Sample Fail1.13
Fail
Fail 9 Fail 255
#c6f Sample Fail1.03
Fail
Fail 15 Fail 204
#c90 Sample Fail1.14
Fail
Fail 16 Fail 408
#c93 Sample Fail1.14
Fail
Fail 22 Fail 357
#c96 Sample Fail1.16
Fail
Fail 28 Fail 306
#c99 Sample Fail1.20
Fail
Fail 34 Fail 255
#c9c Sample Fail1.26
Fail
Fail 39 Fail 204
#c9f Sample Fail1.34
Fail
Fail 45 Fail 153
#cc0 Sample Fail1.71
Fail
Fail 46 Fail 459
#cc3 Sample Fail1.72
Fail
Fail 52 Fail 408
#cc6 Sample Fail1.74
Fail
Fail 58 Fail 357
#cc9 Sample Fail1.77
Fail
Fail 64 Fail 306
#ccc Sample Fail1.83
Fail
Fail 69 Fail 255
#ccf Sample Fail1.91
Fail
Fail 75 Fail 204
#cf0 Sample Fail2.50
Fail
Fail 76 Pass 510
#cf3 Sample Fail2.51
Fail
Fail 82 Fail 459
#cf6 Sample Fail2.53
Fail
Fail 88 Fail 408
#cf9 Sample Fail2.57
Fail
Fail 93 Fail 357
#cfc Sample Fail2.62
Fail
Fail 99 Fail 306
#cff Sample Fail2.70
Fail
Fail 105 Fail 255
#f00 Sample Fail1.36
Fail
Fail 57 Pass 612
#f03 Sample Fail1.35
Fail
Fail 52 Pass 561
#f06 Sample Fail1.31
Fail
Fail 46 Pass 510
#f09 Sample Fail1.25
Fail
Fail 40 Fail 459
#f0c Sample Fail1.17
Fail
Fail 34 Fail 408
#f0f Sample Fail1.07
Fail
Fail 28 Fail 357
#f30 Sample Fail1.25
Fail
Fail 27 Pass 561
#f33 Sample Fail1.24
Fail
Fail 22 Pass 510
#f36 Sample Fail1.21
Fail
Fail 16 Fail 459
#f39 Sample Fail1.15
Fail
Fail 10 Fail 408
#f3c Sample Fail1.08
Fail
Fail 4 Fail 357
#f3f Sample Fail1.00
Fail
Fail 1 Fail 306
#f60 Sample Fail1.00
Fail
Fail 1 Pass 510
#f63 Sample Fail1.01
Fail
Fail 7 Fail 459
#f66 Sample Fail1.03
Fail
Fail 13 Fail 408
#f69 Sample Fail1.07
Fail
Fail 19 Fail 357
#f6c Sample Fail1.12
Fail
Fail 25 Fail 306
#f6f Sample Fail1.20
Fail
Fail 31 Fail 255
#f90 Sample Fail1.37
Fail
Fail 31 Fail 459
#f93 Sample Fail1.38
Fail
Fail 37 Fail 408
#f96 Sample Fail1.40
Fail
Fail 43 Fail 357
#f99 Sample Fail1.44
Fail
Fail 49 Fail 306
#f9c Sample Fail1.50
Fail
Fail 55 Fail 255
#f9f Sample Fail1.58
Fail
Fail 60 Fail 204
#fc0 Sample Fail1.94
Fail
Fail 61 Pass 510
#fc3 Sample Fail1.95
Fail
Fail 67 Fail 459
#fc6 Sample Fail1.97
Fail
Fail 73 Fail 408
#fc9 Sample Fail2.01
Fail
Fail 79 Fail 357
#fcc Sample Fail2.07
Fail
Fail 85 Fail 306
#fcf Sample Fail2.15
Fail
Fail 90 Fail 255
#ff0 Sample Fail2.74
Fail
Fail 91 Pass 561
#ff3 Sample Fail2.75
Fail
Fail 97 Pass 510
#ff6 Sample Fail2.77
Fail
Fail 103 Fail 459
#ff9 Sample Fail2.80
Fail
Fail 109 Fail 408
#ffc Sample Fail2.86
Fail
Fail 115 Fail 357
#fff Sample Fail2.94
Fail
Fail 120 Fail 306

Other Background Colour Combinations

Examine luminosity contrast ratios with other web safe backround colours.