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 #c50

The following table shows the luminosity contrast ratios for all web safe colours with a background colour of #c50, along with the difference in brightness and the difference in colour used by the colour contrast analyser for comparison.

Luminosity Ratios with background: #c50
Foreground Colour Sample Luminosity Contrast Ratio Difference in Brightness Difference in Colour
#000 Sample Pass Level AAA for large text4.87
Pass level 2 fo regular text
Fail 110 Fail 289
#003 Sample Pass Level AAA for large text4.64
Pass level 2 fo regular text
Fail 105 Fail 340
#006 Sample Pass Level AA for large text4.08
Fail fo regular text
Fail 99 Fail 391
#009 Sample Pass Level AA for large text3.33
Fail fo regular text
Fail 93 Fail 442
#00c Sample Fail2.60
Fail
Fail 87 Fail 493
#00f Sample Fail1.99
Fail
Fail 81 Pass 544
#030 Sample Pass Level AA for large text3.30
Fail fo regular text
Fail 80 Fail 238
#033 Sample Pass Level AA for large text3.20
Fail fo regular text
Fail 75 Fail 289
#036 Sample Fail2.92
Fail
Fail 69 Fail 340
#039 Sample Fail2.52
Fail
Fail 63 Fail 391
#03c Sample Fail2.08
Fail
Fail 57 Fail 442
#03f Sample Fail1.67
Fail
Fail 51 Fail 493
#060 Sample Fail1.68
Fail
Fail 51 Fail 221
#063 Sample Fail1.65
Fail
Fail 45 Fail 272
#066 Sample Fail1.57
Fail
Fail 39 Fail 323
#069 Sample Fail1.45
Fail
Fail 33 Fail 374
#06c Sample Fail1.29
Fail
Fail 27 Fail 425
#06f Sample Fail1.12
Fail
Fail 21 Fail 476
#090 Sample Fail1.14
Fail
Fail 21 Fail 272
#093 Sample Fail1.15
Fail
Fail 15 Fail 323
#096 Sample Fail1.18
Fail
Fail 9 Fail 374
#099 Sample Fail1.24
Fail
Fail 3 Fail 425
#09c Sample Fail1.32
Fail
Fail 2 Fail 476
#09f Sample Fail1.44
Fail
Fail 7 Pass 527
#0c0 Sample Fail1.98
Fail
Fail 8 Fail 323
#0c3 Sample Fail1.99
Fail
Fail 14 Fail 374
#0c6 Sample Fail2.02
Fail
Fail 20 Fail 425
#0c9 Sample Fail2.07
Fail
Fail 26 Fail 476
#0cc Sample Fail2.16
Fail
Fail 32 Pass 527
#0cf Sample Fail2.28
Fail
Fail 37 Pass 578
#0f0 Sample Pass Level AA for large text3.14
Fail fo regular text
Fail 38 Fail 374
#0f3 Sample Pass Level AA for large text3.15
Fail fo regular text
Fail 44 Fail 425
#0f6 Sample Pass Level AA for large text3.18
Fail fo regular text
Fail 50 Fail 476
#0f9 Sample Pass Level AA for large text3.24
Fail fo regular text
Fail 56 Pass 527
#0fc Sample Pass Level AA for large text3.32
Fail fo regular text
Fail 62 Pass 578
#0ff Sample Pass Level AA for large text3.44
Fail fo regular text
Fail 67 Pass 629
#300 Sample Pass Level AA for large text4.27
Fail fo regular text
Fail 95 Fail 238
#303 Sample Pass Level AA for large text4.09
Fail fo regular text
Fail 89 Fail 289
#306 Sample Pass Level AA for large text3.65
Fail fo regular text
Fail 84 Fail 340
#309 Sample Pass Level AA for large text3.04
Fail fo regular text
Fail 78 Fail 391
#30c Sample Fail2.42
Fail
Fail 72 Fail 442
#30f Sample Fail1.88
Fail
Fail 66 Fail 493
#330 Sample Pass Level AA for large text3.01
Fail fo regular text
Fail 65 Fail 187
#333 Sample Fail2.93
Fail
Fail 59 Fail 238
#336 Sample Fail2.69
Fail
Fail 54 Fail 289
#339 Sample Fail2.35
Fail
Fail 48 Fail 340
#33c Sample Fail1.96
Fail
Fail 42 Fail 391
#33f Sample Fail1.59
Fail
Fail 36 Fail 442
#360 Sample Fail1.60
Fail
Fail 35 Fail 170
#363 Sample Fail1.58
Fail
Fail 29 Fail 221
#366 Sample Fail1.51
Fail
Fail 24 Fail 272
#369 Sample Fail1.39
Fail
Fail 18 Fail 323
#36c Sample Fail1.24
Fail
Fail 12 Fail 374
#36f Sample Fail1.09
Fail
Fail 6 Fail 425
#390 Sample Fail1.17
Fail
Fail 5 Fail 221
#393 Sample Fail1.18
Fail
Fail 0 Fail 272
#396 Sample Fail1.21
Fail
Fail 5 Fail 323
#399 Sample Fail1.27
Fail
Fail 11 Fail 374
#39c Sample Fail1.35
Fail
Fail 17 Fail 425
#39f Sample Fail1.47
Fail
Fail 23 Fail 476
#3c0 Sample Fail2.01
Fail
Fail 24 Fail 272
#3c3 Sample Fail2.02
Fail
Fail 29 Fail 323
#3c6 Sample Fail2.05
Fail
Fail 35 Fail 374
#3c9 Sample Fail2.10
Fail
Fail 41 Fail 425
#3cc Sample Fail2.19
Fail
Fail 47 Fail 476
#3cf Sample Fail2.31
Fail
Fail 53 Pass 527
#3f0 Sample Pass Level AA for large text3.17
Fail fo regular text
Fail 54 Fail 323
#3f3 Sample Pass Level AA for large text3.18
Fail fo regular text
Fail 59 Fail 374
#3f6 Sample Pass Level AA for large text3.21
Fail fo regular text
Fail 65 Fail 425
#3f9 Sample Pass Level AA for large text3.27
Fail fo regular text
Fail 71 Fail 476
#3fc Sample Pass Level AA for large text3.35
Fail fo regular text
Fail 77 Pass 527
#3ff Sample Pass Level AA for large text3.47
Fail fo regular text
Fail 83 Pass 578
#600 Sample Pass Level AA for large text3.11
Fail fo regular text
Fail 80 Fail 187
#603 Sample Pass Level AA for large text3.02
Fail fo regular text
Fail 74 Fail 238
#606 Sample Fail2.77
Fail
Fail 68 Fail 289
#609 Sample Fail2.40
Fail
Fail 62 Fail 340
#60c Sample Fail2.00
Fail
Fail 57 Fail 391
#60f Sample Fail1.62
Fail
Fail 51 Fail 442
#630 Sample Fail2.39
Fail
Fail 50 Fail 136
#633 Sample Fail2.33
Fail
Fail 44 Fail 187
#636 Sample Fail2.18
Fail
Fail 38 Fail 238
#639 Sample Fail1.95
Fail
Fail 33 Fail 289
#63c Sample Fail1.67
Fail
Fail 27 Fail 340
#63f Sample Fail1.40
Fail
Fail 21 Fail 391
#660 Sample Fail1.40
Fail
Fail 20 Fail 119
#663 Sample Fail1.39
Fail
Fail 14 Fail 170
#666 Sample Fail1.33
Fail
Fail 8 Fail 221
#669 Sample Fail1.24
Fail
Fail 3 Fail 272
#66c Sample Fail1.12
Fail
Fail 2 Fail 323
#66f Sample Fail1.01
Fail
Fail 8 Fail 374
#690 Sample Fail1.26
Fail
Fail 9 Fail 170
#693 Sample Fail1.27
Fail
Fail 15 Fail 221
#696 Sample Fail1.30
Fail
Fail 21 Fail 272
#699 Sample Fail1.35
Fail
Fail 26 Fail 323
#69c Sample Fail1.44
Fail
Fail 32 Fail 374
#69f Sample Fail1.55
Fail
Fail 38 Fail 425
#6c0 Sample Fail2.10
Fail
Fail 39 Fail 221
#6c3 Sample Fail2.11
Fail
Fail 45 Fail 272
#6c6 Sample Fail2.14
Fail
Fail 50 Fail 323
#6c9 Sample Fail2.19
Fail
Fail 56 Fail 374
#6cc Sample Fail2.28
Fail
Fail 62 Fail 425
#6cf Sample Fail2.39
Fail
Fail 68 Fail 476
#6f0 Sample Pass Level AA for large text3.26
Fail fo regular text
Fail 69 Fail 272
#6f3 Sample Pass Level AA for large text3.27
Fail fo regular text
Fail 75 Fail 323
#6f6 Sample Pass Level AA for large text3.30
Fail fo regular text
Fail 80 Fail 374
#6f9 Sample Pass Level AA for large text3.36
Fail fo regular text
Fail 86 Fail 425
#6fc Sample Pass Level AA for large text3.44
Fail fo regular text
Fail 92 Fail 476
#6ff Sample Pass Level AA for large text3.56
Fail fo regular text
Fail 98 Pass 527
#900 Sample Fail2.07
Fail
Fail 65 Fail 136
#903 Sample Fail2.03
Fail
Fail 59 Fail 187
#906 Sample Fail1.91
Fail
Fail 53 Fail 238
#909 Sample Fail1.73
Fail
Fail 47 Fail 289
#90c Sample Fail1.51
Fail
Fail 41 Fail 340
#90f Sample Fail1.28
Fail
Fail 36 Fail 391
#930 Sample Fail1.72
Fail
Fail 35 Fail 85
#933 Sample Fail1.69
Fail
Fail 29 Fail 136
#936 Sample Fail1.61
Fail
Fail 23 Fail 187
#939 Sample Fail1.48
Fail
Fail 17 Fail 238
#93c Sample Fail1.32
Fail
Fail 11 Fail 289
#93f Sample Fail1.14
Fail
Fail 6 Fail 340
#960 Sample Fail1.14
Fail
Fail 5 Fail 68
#963 Sample Fail1.13
Fail
Fail 0 Fail 119
#966 Sample Fail1.09
Fail
Fail 6 Fail 170
#969 Sample Fail1.03
Fail
Fail 12 Fail 221
#96c Sample Fail1.05
Fail
Fail 17 Fail 272
#96f Sample Fail1.17
Fail
Fail 23 Fail 323
#990 Sample Fail1.42
Fail
Fail 24 Fail 119
#993 Sample Fail1.43
Fail
Fail 30 Fail 170
#996 Sample Fail1.46
Fail
Fail 36 Fail 221
#999 Sample Fail1.51
Fail
Fail 42 Fail 272
#99c Sample Fail1.60
Fail
Fail 47 Fail 323
#99f Sample Fail1.72
Fail
Fail 53 Fail 374
#9c0 Sample Fail2.26
Fail
Fail 54 Fail 170
#9c3 Sample Fail2.27
Fail
Fail 60 Fail 221
#9c6 Sample Fail2.30
Fail
Fail 66 Fail 272
#9c9 Sample Fail2.35
Fail
Fail 72 Fail 323
#9cc Sample Fail2.44
Fail
Fail 77 Fail 374
#9cf Sample Fail2.56
Fail
Fail 83 Fail 425
#9f0 Sample Pass Level AA for large text3.42
Fail fo regular text
Fail 84 Fail 221
#9f3 Sample Pass Level AA for large text3.43
Fail fo regular text
Fail 90 Fail 272
#9f6 Sample Pass Level AA for large text3.46
Fail fo regular text
Fail 96 Fail 323
#9f9 Sample Pass Level AA for large text3.52
Fail fo regular text
Fail 101 Fail 374
#9fc Sample Pass Level AA for large text3.60
Fail fo regular text
Fail 107 Fail 425
#9ff Sample Pass Level AA for large text3.72
Fail fo regular text
Fail 113 Fail 476
#c00 Sample Fail1.36
Fail
Fail 49 Fail 85
#c03 Sample Fail1.35
Fail
Fail 44 Fail 136
#c06 Sample Fail1.29
Fail
Fail 38 Fail 187
#c09 Sample Fail1.21
Fail
Fail 32 Fail 238
#c0c Sample Fail1.10
Fail
Fail 26 Fail 289
#c0f Sample Fail1.03
Fail
Fail 20 Fail 340
#c30 Sample Fail1.20
Fail
Fail 19 Fail 34
#c33 Sample Fail1.19
Fail
Fail 14 Fail 85
#c36 Sample Fail1.15
Fail
Fail 8 Fail 136
#c39 Sample Fail1.08
Fail
Fail 2 Fail 187
#c3c Sample Fail1.01
Fail
Fail 3 Fail 238
#c3f Sample Fail1.13
Fail
Fail 9 Fail 289
#c60 Sample Fail1.12
Fail
Fail 9 Fail 17
#c63 Sample Fail1.13
Fail
Fail 15 Fail 68
#c66 Sample Fail1.16
Fail
Fail 21 Fail 119
#c69 Sample Fail1.22
Fail
Fail 27 Fail 170
#c6c Sample Fail1.30
Fail
Fail 33 Fail 221
#c6f Sample Fail1.42
Fail
Fail 39 Fail 272
#c90 Sample Fail1.67
Fail
Fail 39 Fail 68
#c93 Sample Fail1.68
Fail
Fail 45 Fail 119
#c96 Sample Fail1.71
Fail
Fail 51 Fail 170
#c99 Sample Fail1.76
Fail
Fail 57 Fail 221
#c9c Sample Fail1.85
Fail
Fail 63 Fail 272
#c9f Sample Fail1.97
Fail
Fail 68 Fail 323
#cc0 Sample Fail2.51
Fail
Fail 69 Fail 119
#cc3 Sample Fail2.52
Fail
Fail 75 Fail 170
#cc6 Sample Fail2.55
Fail
Fail 81 Fail 221
#cc9 Sample Fail2.60
Fail
Fail 87 Fail 272
#ccc Sample Fail2.69
Fail
Fail 93 Fail 323
#ccf Sample Fail2.80
Fail
Fail 98 Fail 374
#cf0 Sample Pass Level AA for large text3.67
Fail fo regular text
Fail 99 Fail 170
#cf3 Sample Pass Level AA for large text3.68
Fail fo regular text
Fail 105 Fail 221
#cf6 Sample Pass Level AA for large text3.71
Fail fo regular text
Fail 111 Fail 272
#cf9 Sample Pass Level AA for large text3.77
Fail fo regular text
Fail 117 Fail 323
#cfc Sample Pass Level AA for large text3.85
Fail fo regular text
Fail 123 Fail 374
#cff Sample Pass Level AA for large text3.97
Fail fo regular text
Pass 128 Fail 425
#f00 Sample Fail1.08
Fail
Fail 34 Fail 136
#f03 Sample Fail1.09
Fail
Fail 28 Fail 187
#f06 Sample Fail1.12
Fail
Fail 23 Fail 238
#f09 Sample Fail1.17
Fail
Fail 17 Fail 289
#f0c Sample Fail1.26
Fail
Fail 11 Fail 340
#f0f Sample Fail1.38
Fail
Fail 5 Fail 391
#f30 Sample Fail1.18
Fail
Fail 4 Fail 85
#f33 Sample Fail1.19
Fail
Fail 1 Fail 136
#f36 Sample Fail1.22
Fail
Fail 6 Fail 187
#f39 Sample Fail1.27
Fail
Fail 12 Fail 238
#f3c Sample Fail1.36
Fail
Fail 18 Fail 289
#f3f Sample Fail1.47
Fail
Fail 24 Fail 340
#f60 Sample Fail1.47
Fail
Fail 25 Fail 68
#f63 Sample Fail1.48
Fail
Fail 31 Fail 119
#f66 Sample Fail1.51
Fail
Fail 36 Fail 170
#f69 Sample Fail1.56
Fail
Fail 42 Fail 221
#f6c Sample Fail1.65
Fail
Fail 48 Fail 272
#f6f Sample Fail1.77
Fail
Fail 54 Fail 323
#f90 Sample Fail2.02
Fail
Fail 55 Fail 119
#f93 Sample Fail2.03
Fail
Fail 60 Fail 170
#f96 Sample Fail2.05
Fail
Fail 66 Fail 221
#f99 Sample Fail2.11
Fail
Fail 72 Fail 272
#f9c Sample Fail2.19
Fail
Fail 78 Fail 323
#f9f Sample Fail2.31
Fail
Fail 84 Fail 374
#fc0 Sample Fail2.85
Fail
Fail 85 Fail 170
#fc3 Sample Fail2.86
Fail
Fail 90 Fail 221
#fc6 Sample Fail2.89
Fail
Fail 96 Fail 272
#fc9 Sample Fail2.95
Fail
Fail 102 Fail 323
#fcc Sample Pass Level AA for large text3.03
Fail fo regular text
Fail 108 Fail 374
#fcf Sample Pass Level AA for large text3.15
Fail fo regular text
Fail 114 Fail 425
#ff0 Sample Pass Level AA for large text4.02
Fail fo regular text
Fail 115 Fail 221
#ff3 Sample Pass Level AA for large text4.03
Fail fo regular text
Fail 120 Fail 272
#ff6 Sample Pass Level AA for large text4.06
Fail fo regular text
Pass 126 Fail 323
#ff9 Sample Pass Level AA for large text4.11
Fail fo regular text
Pass 132 Fail 374
#ffc Sample Pass Level AA for large text4.20
Fail fo regular text
Pass 138 Fail 425
#fff Sample Pass Level AA for large text4.31
Fail fo regular text
Pass 144 Fail 476

Other Background Colour Combinations

Examine luminosity contrast ratios with other web safe backround colours.