Dusk
#4e5481
A blue that is nearly neutral — the hue shows only against a true grey. It is mid — the hardest range to put text on, either colour struggles.
Hex
#4e5481
RGB
78, 84, 129
OKLCh
46.1% 0.073 277.3°
CIELAB (D50)
36.7, 6.8, -26.4
What is true of this colour, and of no other
- 6 other named colours sit within ΔE00 2 of it.
- It uses only 26% 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 85.0; on black, Lc -17.0. 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
7.22:1 — passes AA
Black text
2.91:1 — fails AA
White text is the better of the two at7.22:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#4e5481
protanopia
#535381 · ΔE00 2.0
deuteranopia
#525281 · ΔE00 1.9
tritanopia
#51518b · ΔE00 2.5
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isRoman Violet at ΔE00 1.09: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Roman VioletΔE00 1.09 · #4d517f
- Purple NavyΔE00 1.227 · #4e5180
- Baby WhaleΔE00 1.67 · #4d5588
- Mauve DuskΔE00 1.785 · #545883
- ProvocativeΔE00 1.924 · #4c5079
- MozartΔE00 1.998 · #485480
- Wild ElderberryΔE00 2.01 · #545989
- Rich VioletΔE00 2.01 · #50578b
- Tangent PeriwinkleΔE00 2.121 · #50507f
- Deep IndigoΔE00 2.324 · #4c567a
- TwilightΔE00 2.431 · #4e518b
- MarlinΔE00 2.558 · #515b87
9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.