Bloodsport
#b52f3a
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#b52f3a
RGB
181, 47, 58
OKLCh
51.6% 0.170 21.3°
CIELAB (D50)
42.1, 54.3, 27.6
What is true of this colour, and of no other
- 6 other named colours sit within ΔE00 2 of it.
- It uses 82% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 79.3; on black, Lc -22.5. 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 32.5 and 39.4 and 47.7 — no red cone.
Text on this colour
White text
6.12:1 — passes AA
Black text
3.43:1 — large text only
White text is the better of the two at6.12:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#b52f3a
protanopia
#4e4e3b · ΔE00 32.5
deuteranopia
#6e6e33 · ΔE00 39.4
tritanopia
#878700 · ΔE00 47.7
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPlanet Fever at ΔE00 1.146: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Planet FeverΔE00 1.146 · #af313a
- Unmatched BeautyΔE00 1.384 · #b12d35
- Lusty RedΔE00 1.406 · #b1383d
- Opening RibbonΔE00 1.524 · #bd273a
- Gory MovieΔE00 1.563 · #b42435
- DemonicΔE00 1.9 · #bb2233
- American RedΔE00 2.01 · #b32134
- Positive RedΔE00 2.029 · #ad2c34
- Red GumballΔE00 2.117 · #ac3a3e
- Scarlet TanagerΔE00 2.137 · #b43b3d
- Red Team SpiritΔE00 2.186 · #b8383b
- Red InkΔE00 2.197 · #ac3235
12 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.