Lost in Space
#03386a
A blue that is muted. It is dark — it carries white text and needs care with black.
Hex
#03386a
RGB
3, 56, 106
OKLCh
34.0% 0.101 252.8°
CIELAB (D50)
22.8, 0.5, -34.3
What is true of this colour, and of no other
- 6 other named colours sit within ΔE00 2 of it.
- It uses 97% of the chroma sRGB can show at this lightness and hue — close enough to the boundary that a wider display would show it slightly more vividly.
- As text on white it measures APCA Lc 96.6; on black, Lc 0.0. 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.
- protanopia and deuteranopia and tritanopia shift it by ΔE00 10.3 and 10.0 and 10.1 — no red cone.
Text on this colour
White text
11.81:1 — passes AA
Black text
1.78:1 — fails AA
White text is the better of the two at11.81:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#03386a
protanopia
#35356a · ΔE00 10.3
deuteranopia
#2f2f6a · ΔE00 10.0
tritanopia
#27278c · ΔE00 10.1
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isMarine Blue at ΔE00 0.184: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Marine BlueΔE00 0.184 · #01386a
- Ateneo BlueΔE00 0.848 · #003a6c
- Tardis BlueΔE00 1.141 · #003b6f
- Prussian BlueΔE00 1.662 · #003366
- Azure DragonΔE00 1.7 · #053976
- Neptune’s DreamΔE00 1.731 · #003368
- Ashenvale NightsΔE00 2.537 · #104071
- Effervescent BlueΔE00 2.727 · #00315a
- Funnel CloudΔE00 2.844 · #113366
- Cobalt Blue TarantulaΔE00 2.884 · #02367d
- Dark Midnight BlueΔE00 2.916 · #003377
- Aegean BlueΔE00 3.023 · #1b416f
9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.