Bullseye
#b9030a
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#b9030a
RGB
185, 3, 10
OKLCh
49.5% 0.201 28.3°
CIELAB (D50)
39.4, 63.3, 51.1
What is true of this colour, and of no other
- 12 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 80.9; on black, Lc -21.0. 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 38.2 and 41.6 and 46.0 — no red cone.
Text on this colour
White text
6.82:1 — passes AA
Black text
3.08:1 — large text only
White text is the better of the two at6.82:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#b9030a
protanopia
#43430f · ΔE00 38.2
deuteranopia
#696900 · ΔE00 41.6
tritanopia
#868600 · ΔE00 46.0
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isRed Sentinel at ΔE00 0.69: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Red SentinelΔE00 0.69 · #b9090f
- Bloody MaryΔE00 0.785 · #ba0105
- Federation of LoveΔE00 0.811 · #b71010
- Red LustΔE00 1.031 · #b4090d
- Sinoper RedΔE00 1.108 · #bb1111
- Thick RedΔE00 1.128 · #b30d0d
- International OrangeΔE00 1.215 · #ba160c
- Red BaronΔE00 1.308 · #bb0011
- Cornell RedΔE00 1.371 · #b31b11
- All Systems RedΔE00 1.567 · #b30103
- Harlock’s CapeΔE00 1.65 · #bb0000
- Tomato SauceΔE00 1.815 · #b21807
7 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.