Piccadilly Purple
#51588e
A blue that is muted. It is mid — the hardest range to put text on, either colour struggles.
Hex
#51588e
RGB
81, 88, 142
OKLCh
47.9% 0.087 277.0°
CIELAB (D50)
38.7, 8.4, -31.2
What is true of this colour, and of no other
- 10 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 only 29% of the chroma available at this lightness and hue — there is a far more vivid version of this colour inside sRGB.
- As text on white it measures APCA Lc 83.0; on black, Lc -19.0. 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.
- All three dichromacies see it as very nearly the same colour you do: its hue is not the part carrying its identity.
Text on this colour
White text
6.70:1 — passes AA
Black text
3.14:1 — large text only
White text is the better of the two at6.70:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#51588e
protanopia
#57578e · ΔE00 2.1
deuteranopia
#56568e · ΔE00 2.0
tritanopia
#555599 · ΔE00 2.3
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isRich Violet at ΔE00 0.566: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Rich VioletΔE00 0.566 · #50578b
- Berry MixΔE00 1.045 · #555a90
- Baby WhaleΔE00 1.318 · #4d5588
- Persian PlushΔE00 1.557 · #575b93
- Midnight SeaΔE00 1.636 · #565b8d
- Wild ElderberryΔE00 1.637 · #545989
- Fresh TakeΔE00 1.652 · #505b93
- Onion Skin BlueΔE00 1.786 · #4c5692
- Nightly SilhouetteΔE00 1.869 · #4f5b93
- MarlinΔE00 1.877 · #515b87
- GemΔE00 2.055 · #4d5b8a
- WizardΔE00 2.191 · #4d5b88
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.