Threatening Red
#c30305
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#c30305
RGB
195, 3, 5
OKLCh
51.4% 0.210 28.9°
CIELAB (D50)
41.6, 65.8, 55.3
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 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 78.6; on black, Lc -23.2. 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 39.3 and 42.2 and 46.8 — no red cone.
Text on this colour
White text
6.30:1 — passes AA
Black text
3.34:1 — large text only
White text is the better of the two at6.30:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#c30305
protanopia
#47470c · ΔE00 39.3
deuteranopia
#6f6f00 · ΔE00 42.2
tritanopia
#8e8e00 · ΔE00 46.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isBlood Kiss at ΔE00 0.581: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Blood KissΔE00 0.581 · #c30b0a
- Ghost PepperΔE00 0.591 · #c10102
- CharsiuΔE00 0.763 · #c01205
- Free Speech RedΔE00 0.952 · #c00000
- Hell RiderΔE00 0.974 · #c40700
- Crimson SunsetΔE00 1.109 · #c01b0c
- Naga MorichΔE00 1.276 · #c90406
- International OrangeΔE00 1.663 · #ba160c
- Scarlet GlowΔE00 1.686 · #cb0103
- Harlock’s CapeΔE00 1.808 · #bb0000
- Red Prayer FlagΔE00 1.808 · #bb1100
- Furious TomatoΔE00 1.863 · #c30a12
8 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.