HueComb

Red Ribbon

#ed0a3f

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

#ed0a3f

RGB

237, 10, 63

OKLCh

60.1% 0.238 20.1°

CIELAB (D50)

51.1, 76.5, 38.4

What is true of this colour, and of no other

  • 7 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 68.2; on black, Lc -33.4. 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 39.2 and 48.7 and 56.5 — no red cone.

Text on this colour

White text

4.45:1 — large text only

Black text

4.72:1 — passes AA

Black text is the better of the two at4.72:1. That is enough for body text.

As text on white, it needs to change

#ec063e 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

#ed0a3f

protanopia

#585841 · ΔE00 39.2

deuteranopia

#898931 · ΔE00 48.7

tritanopia

#adad00 · ΔE00 56.5

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isCherry Tomato at ΔE00 0.938: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

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