Readable Color Combinations (by hue/brightness difference)

BG
color		Text color
Hue difference
Brightness diff.
#000 #0ff
510 178		 #ff0
510 225		 #fff
765 255
#00f #ff0
765 196		 #fff
510 225
#f00 #fff
510 178
#0ff #000
510 178
#ff0 #000
510 225		 #00f
765 196
#fff #000
765 255		 #00f
510 225		 #f00
510 178

12 combinations

Relative Luminance Scale

  1. #000 0
  2. #00f 0.0722
  3. #f00 0.2126
  4. #f0f 0.2848
  5. #0f0 0.7152
  6. #0ff 0.7874
  7. #ff0 0.9278
  8. #fff 1