Rosemary
#405e5c
A cyan that is nearly neutral — the hue shows only against a true grey. It is mid — the hardest range to put text on, either colour struggles.
Hex
#405e5c
RGB
64, 94, 92
OKLCh
45.8% 0.035 190.8°
CIELAB (D50)
37.5, -11.9, -2.6
What is true of this colour, and of no other
- No other named colour in the set is within ΔE00 2 of it — it stands alone.
- It uses 45% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 84.4; on black, Lc -17.5. 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 13.0 and 14.1 and 23.9 — no red cone.
Text on this colour
White text
7.06:1 — passes AA
Black text
2.97:1 — fails AA
White text is the better of the two at7.06:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#405e5c
protanopia
#5b5b5c · ΔE00 13.0
deuteranopia
#56565d · ΔE00 14.1
tritanopia
#515193 · ΔE00 23.9
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isOceans Deep at ΔE00 2.089: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.
- Oceans DeepΔE00 2.089 · #415f61
- Brochantite GreenΔE00 2.441 · #486262
- Teal ForestΔE00 2.52 · #405b5d
- Orkhide ShadeΔE00 2.613 · #3e5755
- Crystal BallΔE00 2.738 · #365955
- Linen GreyΔE00 2.758 · #466163
- Depth ChargeΔE00 2.916 · #355859
- Vert PierreΔE00 2.92 · #4a615c
- AbysseΔE00 2.999 · #3d5758
- Midnight TealΔE00 3.025 · #476062
- Canadian FirΔE00 3.075 · #415a53
- Moor Pond GreenΔE00 3.08 · #3c6461
12 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.