HueComb

Joker’s Smile

#d70141

A red that is about as vivid as sRGB can show at this lightness. It is mid — the hardest range to put text on, either colour struggles.

Hex

#d70141

RGB

215, 1, 65

OKLCh

55.8% 0.223 17.2°

CIELAB (D50)

46.3, 71.9, 30.3

What is true of this colour, and of no other

  • 10 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 73.5; on black, Lc -28.2. 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 35.0 and 46.5 and 56.0 — no red cone.

Text on this colour

White text

5.29:1 — passes AA

Black text

3.97:1 — large text only

White text is the better of the two at5.29:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#d70141

protanopia

#4e4e43 · ΔE00 35.0

deuteranopia

#7b7b37 · ΔE00 46.5

tritanopia

#9d9d00 · ΔE00 56.0

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isRich Carmine at ΔE00 0.044: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

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