Kid Icarus

#a81000

A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.

Hex

#a81000

RGB

168, 16, 0

OKLCh

46.5% 0.183 30.6°

CIELAB (D50)

36.1, 57.1, 51.1

What is true of this colour, and of no other

  • 11 other named colours sit within ΔE00 2 of it — this part of the space is crowded, and the names here are finer distinctions than most people make.
  • It sits exactly on the sRGB boundary: at this lightness and hue the gamut has nothing left, and a wider display would show a more colourful version of it.
  • As text on white it measures APCA Lc 84.5; on black, Lc -17.5. The sign is the polarity, which the WCAG ratio discards.
  • Built into an eleven-step scale, 10 of the 10 adjacent pairs stay ΔE00 2 apart — see the ramp.
  • protanopia and deuteranopia and tritanopia shift it by ΔE00 36.1 and 38.4 and 42.1 — no red cone.

Text on this colour

White text

7.67:1 — passes AA

Black text

2.74:1 — fails AA

White text is the better of the two at7.67:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#a81000

protanopia

#3e3e05 · ΔE00 36.1

deuteranopia

#616100 · ΔE00 38.4

tritanopia

#7a7a00 · ΔE00 42.1

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isNatural Leather at ΔE00 0.164: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.