Napoleonic Blue
#2c4170
A blue that is muted. It is dark — it carries white text and needs care with black.
Hex
#2c4170
RGB
44, 65, 112
OKLCh
38.2% 0.085 264.6°
CIELAB (D50)
27.7, 3.7, -30.2
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 32% 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 93.1; on black, Lc -9.4. 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 6.1 and 5.8 and 5.8 — no red cone.
Text on this colour
White text
10.01:1 — passes AA
Black text
2.10:1 — fails AA
White text is the better of the two at10.01:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#2c4170
protanopia
#3f3f70 · ΔE00 6.1
deuteranopia
#3c3c70 · ΔE00 5.8
tritanopia
#383888 · ΔE00 5.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDeep Ocean Floor at ΔE00 0.47: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Deep Ocean FloorΔE00 0.47 · #2c4173
- MystificationΔE00 0.491 · #2a4071
- Bona FideΔE00 1.037 · #304471
- Blue FunkΔE00 1.124 · #2d4470
- Space MissionsΔE00 1.34 · #324471
- Blue ExpanseΔE00 1.538 · #253f74
- LimogesΔE00 1.714 · #243f6c
- Sodalite BlueΔE00 1.814 · #2c447b
- Monaco BlueΔE00 1.845 · #274376
- NightlifeΔE00 1.958 · #27426b
- Mazarine BlueΔE00 2.082 · #2a407e
- Forbidden BlackberryΔE00 2.179 · #323f75
9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.