Serenity’s Reign
#507bce
A blue that is muted. It is mid — the hardest range to put text on, either colour struggles.
Hex
#507bce
RGB
80, 123, 206
OKLCh
59.1% 0.136 262.3°
CIELAB (D50)
51.5, 4.7, -48.3
What is true of this colour, and of no other
- 2 other named colours sit within ΔE00 2 of it.
- It uses 61% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 68.3; on black, Lc -33.4. 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 9.7 and 9.3 and 9.3 — no red cone.
Text on this colour
White text
4.15:1 — large text only
Black text
5.07:1 — passes AA
Black text is the better of the two at5.07:1. That is enough for body text.
As text on white, it needs to change
#4a75c7 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved.
The same colour, with one cone missing
As you see it
#507bce
protanopia
#7777ce · ΔE00 9.7
deuteranopia
#7070ce · ΔE00 9.3
tritanopia
#6969fc · ΔE00 9.3
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isSkies of Cyberspace at ΔE00 1.922: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Skies of CyberspaceΔE00 1.922 · #4477dd
- Blue IoliteΔE00 1.97 · #587ebe
- Diva VioletΔE00 2.557 · #5077ba
- Woad BlueΔE00 2.585 · #597fb9
- Ashton BlueΔE00 2.659 · #4a79ba
- Sea NoteΔE00 2.744 · #5482c2
- ParkwaterΔE00 2.868 · #477bbd
- Bodega BayΔE00 2.907 · #5e81c1
- Blue Android BaseΔE00 3.034 · #5a79ba
- Granada SkyΔE00 3.075 · #5d81bb
- Astro NauticoΔE00 3.13 · #5383c3
- Havelock BlueΔE00 3.383 · #5784c1
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.