Tomato Sunrise
#aa251b
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#aa251b
RGB
170, 37, 27
OKLCh
48.4% 0.171 29.3°
CIELAB (D50)
38.4, 53.2, 41.0
What is true of this colour, and of no other
- 7 other named colours sit within ΔE00 2 of it.
- It uses 86% 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 82.8; on black, Lc -19.1. 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 34.5 and 38.9 and 42.8 — no red cone.
Text on this colour
White text
7.02:1 — passes AA
Black text
2.99:1 — fails AA
White text is the better of the two at7.02:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#aa251b
protanopia
#46461d · ΔE00 34.5
deuteranopia
#656508 · ΔE00 38.9
tritanopia
#7e7e00 · ΔE00 42.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isJoyous Red at ΔE00 1.281: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Joyous RedΔE00 1.281 · #ae2719
- Sugo Della NonnaΔE00 1.709 · #a32e1d
- Ketchup LaterΔE00 1.723 · #a91c1c
- Siren ScarletΔE00 1.801 · #b21d1d
- CarnelianΔE00 1.806 · #b31b1b
- Scarlet BlazeΔE00 1.986 · #b21f1f
- Evil CentipedeΔE00 1.989 · #aa2211
- Büchel CherryΔE00 2.032 · #aa1111
- Bloody RubyΔE00 2.048 · #a81c1d
- Red MenaceΔE00 2.142 · #aa2121
- JaipurΔE00 2.17 · #a43323
- Fresh AuburnΔE00 2.247 · #a52a24
5 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.