Capital Blue
#1a4157
A blue that is nearly neutral — the hue shows only against a true grey. It is dark — it carries white text and needs care with black.
Hex
#1a4157
RGB
26, 65, 87
OKLCh
35.8% 0.058 236.3°
CIELAB (D50)
25.6, -8.2, -17.6
What is true of this colour, and of no other
- 5 other named colours sit within ΔE00 2 of it.
- It uses 75% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 94.9; on black, Lc -7.7. 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.
- protanopia and deuteranopia and tritanopia shift it by ΔE00 14.9 and 15.1 and 11.8 — no red cone.
Text on this colour
White text
10.84:1 — passes AA
Black text
1.94:1 — fails AA
White text is the better of the two at10.84:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#1a4157
protanopia
#3e3e57 · ΔE00 14.9
deuteranopia
#393957 · ΔE00 15.1
tritanopia
#323282 · ΔE00 11.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDuskwood at ΔE00 1.534: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- DuskwoodΔE00 1.534 · #123d55
- Astronaut BlueΔE00 1.558 · #214559
- Indigo Go-GoΔE00 1.773 · #234156
- Neptune’s WrathΔE00 1.779 · #11425d
- Sailor BlueΔE00 1.912 · #0f445c
- Reef ResortΔE00 2.475 · #274256
- Maniac MansionΔE00 2.526 · #004058
- Dark Slate BlueΔE00 2.601 · #214761
- One Year of RainΔE00 2.717 · #29465b
- Subterranean RiverΔE00 2.73 · #1f3b4d
- Forest BluesΔE00 2.804 · #0d4462
- Salty DogΔE00 2.839 · #234058
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.