Arctic Nights
#345c61
A cyan 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
#345c61
RGB
52, 92, 97
OKLCh
44.7% 0.046 205.9°
CIELAB (D50)
36.3, -13.6, -7.6
What is true of this colour, and of no other
- 3 other named colours sit within ΔE00 2 of it.
- It uses 60% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 85.5; on black, Lc -16.5. 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 15.9 and 17.3 and 21.8 — no red cone.
Text on this colour
White text
7.37:1 — passes AA
Black text
2.85:1 — fails AA
White text is the better of the two at7.37:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#345c61
protanopia
#595961 · ΔE00 15.9
deuteranopia
#535362 · ΔE00 17.3
tritanopia
#4b4b9d · ΔE00 21.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPetro Blue at ΔE00 1.73: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Petro BlueΔE00 1.73 · #2f5961
- Deep Sea DiveΔE00 1.76 · #376167
- Sea ChallengeΔE00 1.905 · #2c585c
- Depth ChargeΔE00 2.362 · #355859
- Terrace TealΔE00 2.422 · #275b60
- After the StormΔE00 2.445 · #33616a
- Inner SpaceΔE00 2.458 · #285b5f
- MediterraneaΔE00 2.572 · #39636a
- Jimbaran BayΔE00 2.651 · #3d5d64
- China Green BlueΔE00 2.794 · #3a6468
- Deep Sea DiverΔE00 2.813 · #255c61
- BayberryΔE00 2.834 · #275a5d
9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.