Active Volcano
#bb1133
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#bb1133
RGB
187, 17, 51
OKLCh
50.7% 0.196 19.7°
CIELAB (D50)
40.7, 62.9, 30.6
What is true of this colour, and of no other
- 14 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 96% 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 80.0; on black, Lc -21.8. 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 34.3 and 43.0 and 50.9 — no red cone.
Text on this colour
White text
6.48:1 — passes AA
Black text
3.24:1 — large text only
White text is the better of the two at6.48:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#bb1133
protanopia
#464635 · ΔE00 34.3
deuteranopia
#6c6c29 · ΔE00 43.0
tritanopia
#888800 · ΔE00 50.9
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isCrimson Glory at ΔE00 0.664: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Crimson GloryΔE00 0.664 · #be0032
- Hot CubaΔE00 1.011 · #bb0033
- Akai RedΔE00 1.13 · #bc012e
- WarlordΔE00 1.178 · #ba0033
- Old Glory RedΔE00 1.182 · #bf0a30
- Red Dead RedemptionΔE00 1.345 · #bb012d
- Lipstick RedΔE00 1.364 · #c0022f
- Hinomaru RedΔE00 1.367 · #bc002d
- PomodoroΔE00 1.478 · #c30232
- American RedΔE00 1.512 · #b32134
- Gory MovieΔE00 1.571 · #b42435
- Vampire BiteΔE00 1.619 · #c40233
6 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.