Endless Horizon
#b1dbf5
A blue that is nearly neutral — the hue shows only against a true grey. It is very light — it works as a page background, not as text.
Hex
#b1dbf5
RGB
177, 219, 245
OKLCh
87.0% 0.057 235.5°
CIELAB (D50)
85.0, -9.8, -17.5
What is true of this colour, and of no other
- 3 other named colours sit within ΔE00 2 of it.
- It uses 76% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 22.1; on black, Lc -81.2. 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 15.6 and 15.6 and 14.8 — no red cone.
Text on this colour
White text
1.47:1 — fails AA
Black text
14.32:1 — passes AA
Black text is the better of the two at14.32:1. That is enough for body text.
As text on white, it needs to change
#557c93 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
#b1dbf5
protanopia
#d7d7f5 · ΔE00 15.6
deuteranopia
#d0d0f6 · ΔE00 15.6
tritanopia
#c8c8ff · ΔE00 14.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isBlue Rice at ΔE00 1.026: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Blue RiceΔE00 1.026 · #b3d9f3
- Arctic ParadiseΔE00 1.237 · #b8dff8
- Echo IrisΔE00 1.876 · #b6dff4
- Diluted BlueΔE00 2.068 · #b8def2
- Bellagio FountainsΔE00 2.153 · #b7dff3
- Fairy SparklesΔE00 2.186 · #b0e0f7
- Seashore DreamsΔE00 2.264 · #b5dcef
- Light ShimmerΔE00 2.426 · #a3d4ef
- DropletΔE00 2.428 · #aaddff
- Soap BubbleΔE00 2.442 · #b2dcef
- Azure SkyΔE00 2.442 · #b0e0f6
- Little PondΔE00 2.443 · #a6d1eb
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.