Red Inferno
#bb1e1e
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#bb1e1e
RGB
187, 30, 30
OKLCh
51.1% 0.191 27.4°
CIELAB (D50)
41.3, 60.1, 43.5
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 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 79.6; on black, Lc -22.2. 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 36.9 and 42.0 and 46.5 — no red cone.
Text on this colour
White text
6.33:1 — passes AA
Black text
3.32:1 — large text only
White text is the better of the two at6.33:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#bb1e1e
protanopia
#494921 · ΔE00 36.9
deuteranopia
#6e6e07 · ΔE00 42.0
tritanopia
#898900 · ΔE00 46.5
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isCrisis Red at ΔE00 0.758: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Crisis RedΔE00 0.758 · #bb2222
- Fiery GarnetΔE00 0.838 · #b71e1e
- Evil Sunz ScarletΔE00 1.303 · #c2191f
- HeartwarmingΔE00 1.334 · #bf1818
- Upset TomatoΔE00 1.352 · #b52923
- Red Tolumnia OrchidΔE00 1.484 · #be0119
- Red RiderΔE00 1.551 · #b9271c
- Flamingo FervourΔE00 1.558 · #b42121
- Tedious RedΔE00 1.735 · #c00c20
- Rossini RedΔE00 1.761 · #c4091e
- CarnelianΔE00 1.776 · #b31b1b
- Red CarpetΔE00 1.872 · #bc2026
9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.