Sail On
#4575ad
A blue that is muted. It is mid — the hardest range to put text on, either colour struggles.
Hex
#4575ad
RGB
69, 117, 173
OKLCh
55.4% 0.102 253.4°
CIELAB (D50)
47.8, -3.4, -35.4
What is true of this colour, and of no other
- 13 other named colours sit within ΔE00 2 of it — this part of the space is crowded, and the names here are finer distinctions than most people make.
- It uses 59% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 72.9; 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 12.4 and 11.7 and 10.6 — no red cone.
Text on this colour
White text
4.77:1 — passes AA
Black text
4.40:1 — large text only
White text is the better of the two at4.77:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#4575ad
protanopia
#7171ad · ΔE00 12.4
deuteranopia
#6a6aad · ΔE00 11.7
tritanopia
#6161e4 · ΔE00 10.6
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isBlue Triumph at ΔE00 0.906: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Blue TriumphΔE00 0.906 · #4376ab
- AthensΔE00 0.929 · #3f74b1
- PetrelΔE00 1.083 · #4076b4
- Field BlueΔE00 1.31 · #4477aa
- Song of the SeaΔE00 1.415 · #4a73a8
- SinatraΔE00 1.448 · #4675b7
- Viennese BlueΔE00 1.477 · #4278af
- Co PilotΔE00 1.494 · #4978a9
- Sage Blossom BlueΔE00 1.737 · #4e78a9
- SleepΔE00 1.849 · #4579ac
- Flat BlueΔE00 1.861 · #3c73a8
- Billycart BlueΔE00 1.885 · #4c77a4
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.