Night Fever
#572e89
A violet that is muted. It is mid — the hardest range to put text on, either colour struggles.
Hex
#572e89
RGB
87, 46, 137
OKLCh
40.3% 0.145 300.7°
CIELAB (D50)
28.4, 33.8, -44.5
What is true of this colour, and of no other
- 4 other named colours sit within ΔE00 2 of it.
- It uses 68% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 92.1; on black, Lc -10.3. 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 9.1 and 9.1 and 33.3 — no red cone.
Text on this colour
White text
9.73:1 — passes AA
Black text
2.16:1 — fails AA
White text is the better of the two at9.73:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#572e89
protanopia
#343489 · ΔE00 9.1
deuteranopia
#3d3d89 · ΔE00 9.1
tritanopia
#46463c · ΔE00 33.3
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPurple Patch at ΔE00 1.379: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Purple PatchΔE00 1.379 · #5c2e88
- Sick BlueΔE00 1.533 · #502d86
- RegaliaΔE00 1.633 · #522d80
- KSU PurpleΔE00 1.854 · #512888
- Deep AmethystΔE00 2.248 · #5b3082
- Spanish VioletΔE00 2.547 · #4c2882
- Foggy AmethystΔE00 2.567 · #57317e
- Lucid DreamsΔE00 2.59 · #632f92
- Kalish VioletΔE00 2.722 · #552288
- Blue Magenta VioletΔE00 2.78 · #553592
- Kingfisher DaisyΔE00 2.933 · #583580
- True PurpleΔE00 3.128 · #65318e
9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.