Pesto Rosso
#bb3333
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#bb3333
RGB
187, 51, 51
OKLCh
53.0% 0.173 25.3°
CIELAB (D50)
43.7, 54.6, 34.0
What is true of this colour, and of no other
- 13 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 81% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 77.7; on black, Lc -24.1. 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 34.3 and 39.9 and 46.5 — no red cone.
Text on this colour
White text
5.78:1 — passes AA
Black text
3.63:1 — large text only
White text is the better of the two at5.78:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#bb3333
protanopia
#525234 · ΔE00 34.3
deuteranopia
#72722a · ΔE00 39.9
tritanopia
#8c8c00 · ΔE00 46.5
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isHot Jazz at ΔE00 0.551: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Hot JazzΔE00 0.551 · #bc3033
- Scarlet BeebalmΔE00 1.032 · #bb2d32
- Aurora RedΔE00 1.309 · #c13435
- Red ObsessionΔE00 1.373 · #b63731
- Stylish RedΔE00 1.624 · #bc3439
- Molten LavaΔE00 1.683 · #b5332e
- BangΔE00 1.792 · #bc393b
- Flirt AlertΔE00 1.895 · #be3c37
- Red ContrastΔE00 1.933 · #b33234
- Crimson GlowΔE00 1.942 · #c13939
- Scarlet RedΔE00 1.949 · #b63e36
- Baton RougeΔE00 1.95 · #b8292b
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.