HueComb

Devil’s Advocate

#ff3344

A red that is about as vivid as sRGB can show at this lightness. It is light — black text sits on it comfortably, white text does not.

Hex

#ff3344

RGB

255, 51, 68

OKLCh

65.1% 0.235 23.2°

CIELAB (D50)

57.0, 75.0, 43.2

What is true of this colour, and of no other

  • 6 other named colours sit within ΔE00 2 of it.
  • 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 61.9; on black, Lc -39.8. 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 41.1 and 48.5 and 55.4 — no red cone.

Text on this colour

White text

3.62:1 — large text only

Black text

5.81:1 — passes AA

Black text is the better of the two at5.81:1. That is enough for body text.

As text on white, it needs to change

#eb1233 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved.

Try it against your own background

The same colour, with one cone missing

As you see it

#ff3344

protanopia

#696946 · ΔE00 41.1

deuteranopia

#989835 · ΔE00 48.5

tritanopia

#bdbd00 · ΔE00 55.4

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isRed Salsa at ΔE00 1.143: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

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