Test the RGB capabilities of your screen.

The best possible 'score' is: [1, 254, 127, 129].
Score of my laptop screen: [4, 251, 127, 130] (32-bit color).

What is the first block that is distinguishable (lighter) from black?
0 1 2 3 4 5 6 7 8 9 10

What is the first block that is distinguishable (darker) from white?
255 254 253 252 251 250 249 248 247 246 245

What is the first block that is distinguishable (darker) from grey?
128 127 126 125 124 123 122 121 120 119 118

What is the first block that is distinguishable (lighter) from grey?
128 129 130 131 132 133 134 135 136 137 138

Detailed

Just in case none of the above blocks is distinguishable of the surrounding color (your screen sucks), here are tests with bigger differences:

What is the first block that is distinguishable (lighter) from black?
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32

What is the first block that is distinguishable (darker) from white?
255 253 251 249 247 245 243 241 239 237 235 233 231 229 227 225 223

What is the first block that is distinguishable (darker) from grey?
128 126 124 122 120 118 116 114 112 110 108 106 104 102 100 98 96

What is the first block that is distinguishable (lighter) from grey?
128 130 132 134 136 138 140 142 144 146 148 150 152 154 156 158 160

Full scope

What is the first block that is distinguishable (darker) from white?
255 247 239 231 223 215 207 199 191 183 175 167 159 151 143 135 127 119 111 103 95 87 79 71 63 55 47 39 31 23 15 7


Keywords
black, color, colour, contrast, couleur, dégradé, dark, degrade, dissolve, donker, fade, farbe, gradient, gradual, gray, grey, grijs, in, kleur, licht, light, out, overgang, pastel, tint, transient, transition, white, wit, zwart

Page provided by Peter Forret - Remarks to