User:BZAW31559/sandbox/Memory Radar/colors

This page introduces the Memory Radar for the colors. The Memory Radar has four values: Relative luminance, CIELAB brightness, YPbPr luma, and subtotal values.

Relative luminance
It is possible to calculate by:

relative luminance × 255

Therefore:


 * #000000 = 0 × 255 = 0;
 * #0000FF = 0.0722 × 255 = 18.411 ≈ 18;
 * #FF0000 = 0.2126 × 255 = 54.213 ≈ 54;
 * #FF00FF = (0.2126 + 0.0722) × 255 = 0.2848 × 255 = 72.624 ≈ 73;
 * #00FF00 = 0.7152 × 255 = 182.376 ≈ 182;
 * #00FFFF = (0.7152 + 0.0722) × 255 = 0.7874 × 255 = 200.787 ≈ 201;
 * and finally: #FFFFFF = 1 × 255 = 255.