HueComb

Vampire Red

#dd4132

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

Hex

#dd4132

RGB

221, 65, 50

OKLCh

60.2% 0.195 29.5°

CIELAB (D50)

51.9, 60.6, 45.4

What is true of this colour, and of no other

  • 12 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 80% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 68.5; on black, Lc -33.1. 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 38.1 and 42.6 and 47.6 — no red cone.

Text on this colour

White text

4.31:1 — large text only

Black text

4.88:1 — passes AA

Black text is the better of the two at4.88:1. That is enough for body text.

As text on white, it needs to change

#d93d2f 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

#dd4132

protanopia

#646434 · ΔE00 38.1

deuteranopia

#898923 · ΔE00 42.6

tritanopia

#a6a600 · ΔE00 47.6

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPunch at ΔE00 0.285: below 1.0 — an ordinary observer cannot tell these apart, even side by side. 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.