Cardinal
#c41e3a
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#c41e3a
RGB
196, 30, 58
OKLCh
53.1% 0.197 19.5°
CIELAB (D50)
43.5, 63.3, 30.1
What is true of this colour, and of no other
- 8 other named colours sit within ΔE00 2 of it.
- It uses 92% 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 77.4; on black, Lc -24.4. 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 34.4 and 43.2 and 51.8 — no red cone.
Text on this colour
White text
5.84:1 — passes AA
Black text
3.59:1 — large text only
White text is the better of the two at5.84:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#c41e3a
protanopia
#4d4d3c · ΔE00 34.4
deuteranopia
#737331 · ΔE00 43.2
tritanopia
#909000 · ΔE00 51.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isRuby Passion at ΔE00 0.668: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Ruby PassionΔE00 0.668 · #c41a3b
- True RedΔE00 0.709 · #c81a3a
- Opening RibbonΔE00 1.26 · #bd273a
- Ski PatrolΔE00 1.635 · #c9133e
- Vampire BiteΔE00 1.719 · #c40233
- Karakurenai RedΔE00 1.758 · #c91f37
- Crimson CloudΔE00 1.825 · #c32f40
- PomodoroΔE00 1.922 · #c30232
- Vivid CrimsonΔE00 2.017 · #cc0033
- ToreadorΔE00 2.048 · #cd123f
- Red PeppercornΔE00 2.056 · #c62d42
- C-3POΔE00 2.09 · #c33140
8 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.