Ecstatic Red
#aa1122
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#aa1122
RGB
170, 17, 34
OKLCh
47.2% 0.182 24.0°
CIELAB (D50)
36.8, 57.9, 35.6
What is true of this colour, and of no other
- 7 other named colours sit within ΔE00 2 of it.
- It uses 95% 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 83.9; on black, Lc -18.1. 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 34.7 and 41.0 and 46.1 — no red cone.
Text on this colour
White text
7.47:1 — passes AA
Black text
2.81:1 — fails AA
White text is the better of the two at7.47:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#aa1122
protanopia
#3f3f24 · ΔE00 34.7
deuteranopia
#626214 · ΔE00 41.0
tritanopia
#7c7c00 · ΔE00 46.1
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isGaharā Lāl at ΔE00 0.587: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Gaharā LālΔE00 0.587 · #ac0c20
- Castlevania HeartΔE00 1.192 · #a80020
- IncarnadineΔE00 1.193 · #aa0022
- Red-Hot MamaΔE00 1.529 · #a91f29
- Mammary RedΔE00 1.662 · #b00b1e
- Haute RedΔE00 1.672 · #aa1829
- Upsdell RedΔE00 1.888 · #ae2029
- Red SquareΔE00 2.113 · #aa262a
- Romantic ThrillerΔE00 2.117 · #a2101b
- Blood RushΔE00 2.184 · #aa2222
- SambaΔE00 2.191 · #aa262b
- SalsaΔE00 2.216 · #b31928
9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.