HueComb

Ceremonial Red Ribbon

#e63127

A red that is saturated. It is light — black text sits on it comfortably, white text does not.

Hex

#e63127

RGB

230, 49, 39

OKLCh

60.2% 0.217 28.8°

CIELAB (D50)

51.8, 67.9, 51.7

What is true of this colour, and of no other

  • 17 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 uses 88% of the chroma sRGB can show at this lightness and hue — close enough to the boundary that a wider display would show it slightly more vividly.
  • As text on white it measures APCA Lc 68.3; on black, Lc -33.3. 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 40.7 and 45.3 and 49.7 — no red cone.

Text on this colour

White text

4.34:1 — large text only

Black text

4.83:1 — passes AA

Black text is the better of the two at4.83:1. That is enough for body text.

As text on white, it needs to change

#e32d24 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

#e63127

protanopia

#60602a · ΔE00 40.7

deuteranopia

#8a8a0b · ΔE00 45.3

tritanopia

#abab00 · ΔE00 49.7

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isKrasnyi Red at ΔE00 0.935: 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.