Blue Bobbin
#52b4ca
A cyan that is muted. It is light — black text sits on it comfortably, white text does not.
Hex
#52b4ca
RGB
82, 180, 202
OKLCh
72.0% 0.096 214.7°
CIELAB (D50)
68.2, -25.0, -20.4
What is true of this colour, and of no other
- 10 other named colours sit within ΔE00 2 of it — this part of the space is crowded, and the names here are finer distinctions than most people make.
- It uses 76% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 47.1; on black, Lc -54.9. 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 23.9 and 23.5 and 24.9 — no red cone.
Text on this colour
White text
2.40:1 — fails AA
Black text
8.74:1 — passes AA
Black text is the better of the two at8.74:1. That is enough for body text.
As text on white, it needs to change
#0c8297 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
#52b4ca
protanopia
#acacca · ΔE00 23.9
deuteranopia
#9f9fcb · ΔE00 23.5
tritanopia
#8f8fff · ΔE00 24.9
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isFountain at ΔE00 0.484: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- FountainΔE00 0.484 · #56b5ca
- Water BabyΔE00 0.84 · #5ab5cb
- Liquid BlueΔE00 0.921 · #55b7ce
- VikingΔE00 0.946 · #4db1c8
- Teal MoiréΔE00 0.983 · #50b7cf
- GondolierΔE00 1.462 · #5db1c5
- GlimpseΔE00 1.526 · #4fb9ce
- High DiveΔE00 1.699 · #59b9cc
- Aqua VerdeΔE00 1.898 · #56b3c3
- Fitness BlueΔE00 1.942 · #5bb9d2
- Mountain Range BlueΔE00 2.048 · #53b8c9
- Bachelor ButtonΔE00 2.195 · #4abbd5
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.