Zenith
#497a9f
A blue 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
#497a9f
RGB
73, 122, 159
OKLCh
56.0% 0.079 242.5°
CIELAB (D50)
48.9, -8.8, -25.4
What is true of this colour, and of no other
- 7 other named colours sit within ΔE00 2 of it.
- It uses 58% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 71.8; on black, Lc -29.9. 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 15.3 and 14.5 and 11.8 — no red cone.
Text on this colour
White text
4.60:1 — passes AA
Black text
4.57:1 — passes AA
White text is the better of the two at4.60:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#497a9f
protanopia
#76769f · ΔE00 15.3
deuteranopia
#6e6ea0 · ΔE00 14.5
tritanopia
#6565de · ΔE00 11.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isTech Wave at ΔE00 0.593: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Tech WaveΔE00 0.593 · #4c7a9d
- Antarctic BlueΔE00 0.959 · #4b789b
- Biedermeier BlueΔE00 1.324 · #507ca0
- Storm BlueΔE00 1.339 · #507b9c
- Stormy RidgeΔE00 1.726 · #507b9a
- Parisian BlueΔE00 1.732 · #4f7ca4
- BorageΔE00 1.877 · #507ea4
- Dull BlueΔE00 2.172 · #49759c
- Beijing BlueΔE00 2.337 · #3e7daa
- Cry Me a RiverΔE00 2.405 · #427898
- Linoleum BlueΔE00 2.448 · #427c9d
- Sea SwirlΔE00 2.453 · #427a9a
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.