Blue Funk
#2d4470
A blue that is muted. It is dark — it carries white text and needs care with black.
Hex
#2d4470
RGB
45, 68, 112
OKLCh
39.0% 0.081 262.4°
CIELAB (D50)
28.7, 2.1, -28.7
What is true of this colour, and of no other
- 13 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 43% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 92.3; on black, Lc -10.2. 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 7.0 and 6.7 and 6.3 — no red cone.
Text on this colour
White text
9.67:1 — passes AA
Black text
2.17:1 — fails AA
White text is the better of the two at9.67:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#2d4470
protanopia
#424270 · ΔE00 7.0
deuteranopia
#3e3e70 · ΔE00 6.7
tritanopia
#3a3a8b · ΔE00 6.3
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isBona Fide at ΔE00 0.837: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Bona FideΔE00 0.837 · #304471
- Napoleonic BlueΔE00 1.124 · #2c4170
- Deep Ocean FloorΔE00 1.319 · #2c4173
- Space MissionsΔE00 1.389 · #324471
- MystificationΔE00 1.418 · #2a4071
- NightlifeΔE00 1.481 · #27426b
- Monaco BlueΔE00 1.522 · #274376
- Hydrogen BlueΔE00 1.648 · #33476d
- Sodalite BlueΔE00 1.653 · #2c447b
- Forlorn CruiseΔE00 1.885 · #34466c
- LimogesΔE00 1.914 · #243f6c
- Midnight InterludeΔE00 1.929 · #32496f
7 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.