Happy Hippo
#818581
A neutral that has no useful hue — it reads as a grey. It is light — black text sits on it comfortably, white text does not.
Hex
#818581
RGB
129, 133, 129
OKLCh
61.2% 0.008 145.5°
CIELAB (D50)
55.1, -2.1, 1.6
What is true of this colour, and of no other
- 8 other named colours sit within ΔE00 2 of it.
- It uses almost none of the chroma available here: this is a grey with a trace of hue rather than a colour.
- As text on white it measures APCA Lc 65.0; on black, Lc -36.6. 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.
- tritanopia shifts it by ΔE00 7.8 — no blue cone.
Text on this colour
White text
3.75:1 — large text only
Black text
5.61:1 — passes AA
Black text is the better of the two at5.61:1. That is enough for body text.
As text on white, it needs to change
#747874 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
#818581
protanopia
#858581 · ΔE00 2.3
deuteranopia
#848481 · ΔE00 2.4
tritanopia
#83838d · ΔE00 7.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isThe North Wind Blows at ΔE00 0.516: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- The North Wind BlowsΔE00 0.516 · #818580
- Metal FlakeΔE00 0.874 · #838782
- Paved PathΔE00 0.98 · #828782
- Signal GreyΔE00 1.337 · #838684
- StackΔE00 1.434 · #858885
- Greasy GreyΔE00 1.612 · #838583
- BoulderΔE00 1.78 · #7c817c
- Coastal StormΔE00 1.953 · #7d807b
- Iron GreyΔE00 2.286 · #7c7f7c
- Tank GreyΔE00 2.339 · #848481
- Slate RockΔE00 2.381 · #868988
- Medium GreyΔE00 2.411 · #7d7f7c
12 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.