True Sky Blue
#24a6c2
A cyan that is muted. It is light — black text sits on it comfortably, white text does not.
Hex
#24a6c2
RGB
36, 166, 194
OKLCh
67.1% 0.112 216.7°
CIELAB (D50)
62.5, -27.5, -24.6
What is true of this colour, and of no other
- 6 other named colours sit within ΔE00 2 of it.
- It uses 94% 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 54.5; on black, Lc -47.3. 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 24.9 and 24.6 and 26.4 — no red cone.
Text on this colour
White text
2.87:1 — fails AA
Black text
7.31:1 — passes AA
Black text is the better of the two at7.31:1. That is enough for body text.
As text on white, it needs to change
#00829a is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved, and some saturation was given up to stay inside sRGB.
The same colour, with one cone missing
As you see it
#24a6c2
protanopia
#9e9ec2 · ΔE00 24.9
deuteranopia
#8f8fc3 · ΔE00 24.6
tritanopia
#7c7cff · ΔE00 26.4
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isGulf Waters at ΔE00 0.844: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Gulf WatersΔE00 0.844 · #2da6bf
- MauiΔE00 1.041 · #21a5be
- Minted BlueΔE00 1.228 · #26a6be
- Pacific BlueΔE00 1.369 · #1ca9c9
- MoonstoneΔE00 1.376 · #3aa8c1
- Gummy DolphinsΔE00 1.538 · #06a9ca
- Jamaican SeaΔE00 2.21 · #26a5ba
- Ball BlueΔE00 2.218 · #21abcd
- Scuba BlueΔE00 2.31 · #00a2c5
- Greek BlueΔE00 2.388 · #009fbd
- January BlueΔE00 2.433 · #00a1b9
- Cyan BlueΔE00 2.443 · #14a3c7
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.