HueComb

Dragon’s Fire

#fc4a14

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

#fc4a14

RGB

252, 74, 20

OKLCh

66.0% 0.222 35.3°

CIELAB (D50)

58.6, 66.8, 66.1

What is true of this colour, and of no other

  • 18 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 97% 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 60.3; on black, Lc -41.4. 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 41.3 and 43.2 and 46.7 — no red cone.

Text on this colour

White text

3.43:1 — large text only

Black text

6.13:1 — passes AA

Black text is the better of the two at6.13:1. That is enough for body text.

As text on white, it needs to change

#dd3a00 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved, and some saturation was given up to stay inside sRGB.

Try it against your own background

The same colour, with one cone missing

As you see it

#fc4a14

protanopia

#73731a · ΔE00 41.3

deuteranopia

#9c9c00 · ΔE00 43.2

tritanopia

#bebe00 · ΔE00 46.7

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isCoin Slot at ΔE00 0.808: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • Coin SlotΔE00 0.808 · #ff4411
  • Exotic OrangeΔE00 0.89 · #f84f1d
  • Orioles OrangeΔE00 0.927 · #fb4f14
  • Lurid RedΔE00 0.948 · #ff4505
  • Fēi Hóng ScarletΔE00 1.011 · #fe420f
  • Orange RedΔE00 1.173 · #fe4401
  • Ultimate OrangeΔE00 1.22 · #ff4200
  • Inferno OrangeΔE00 1.23 · #ff4400
  • Red DitΔE00 1.267 · #ff4500
  • Flare GunΔE00 1.368 · #ff4519
  • Ōtan RedΔE00 1.475 · #ff4e20
  • Reddish OrangeΔE00 1.546 · #f8481c

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