Twilight
#4e518b
A violet that is muted. It is mid — the hardest range to put text on, either colour struggles.
Hex
#4e518b
RGB
78, 81, 139
OKLCh
46.0% 0.094 279.8°
CIELAB (D50)
36.3, 11.0, -33.2
What is true of this colour, and of no other
- 2 other named colours sit within ΔE00 2 of it.
- It uses only 34% 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 85.3; on black, Lc -16.7. 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
7.31:1 — passes AA
Black text
2.87:1 — fails AA
White text is the better of the two at7.31:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#4e518b
protanopia
#51518b · ΔE00 0.9
deuteranopia
#50508b · ΔE00 0.8
tritanopia
#50508f · ΔE00 1.0
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isBeaded Blue at ΔE00 1.601: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Beaded BlueΔE00 1.601 · #494d8b
- Baby WhaleΔE00 1.701 · #4d5588
- Rich VioletΔE00 2.049 · #50578b
- Piccadilly PurpleΔE00 2.331 · #51588e
- Purple NavyΔE00 2.346 · #4e5180
- Roman VioletΔE00 2.424 · #4d517f
- DuskΔE00 2.431 · #4e5481
- Canyon IrisΔE00 2.476 · #49548f
- Onion Skin BlueΔE00 2.622 · #4c5692
- Highlands TwilightΔE00 2.657 · #484a80
- Altar of HeavenΔE00 2.723 · #4d4c80
- Blue JewelΔE00 2.744 · #465383
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.