Jade Jewel
#247e81
A cyan that is muted. It is mid — the hardest range to put text on, either colour struggles.
Hex
#247e81
RGB
36, 126, 129
OKLCh
54.3% 0.082 198.3°
CIELAB (D50)
47.9, -26.0, -9.7
What is true of this colour, and of no other
- 6 other named colours sit within ΔE00 2 of it.
- It uses 88% 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 73.0; on black, Lc -28.7. 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 22.9 and 24.2 and 30.7 — no red cone.
Text on this colour
White text
4.80:1 — passes AA
Black text
4.38:1 — large text only
White text is the better of the two at4.80:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#247e81
protanopia
#787881 · ΔE00 22.9
deuteranopia
#6d6d82 · ΔE00 24.2
tritanopia
#5f5fe6 · ΔE00 30.7
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isMacquarie at ΔE00 1.657: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- MacquarieΔE00 1.657 · #007d82
- Kandinsky TurquoiseΔE00 1.676 · #2d8284
- Green Blue SlateΔE00 1.753 · #358082
- Nero’s GreenΔE00 1.878 · #318181
- Riviera SeaΔE00 1.903 · #1b8188
- Tropical WatersΔE00 1.949 · #007c7e
- AtollΔE00 2.043 · #2b797a
- ToberniteΔE00 2.102 · #077a7d
- Cranach BlueΔE00 2.108 · #2b8288
- Go AlphaΔE00 2.195 · #007f87
- TealΔE00 2.264 · #008080
- Blue GrassΔE00 2.366 · #007a7c
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.