Tangent Periwinkle
#50507f
A violet 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
#50507f
RGB
80, 80, 127
OKLCh
45.2% 0.076 282.9°
CIELAB (D50)
35.6, 9.3, -26.8
What is true of this colour, and of no other
- 6 other named colours sit within ΔE00 2 of it.
- It uses only 28% of the chroma available at this lightness and hue — there is a far more vivid version of this colour inside sRGB.
- As text on white it measures APCA Lc 86.1; on black, Lc -16.0. 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.
- All three dichromacies see it as very nearly the same colour you do: its hue is not the part carrying its identity.
Text on this colour
White text
7.51:1 — passes AA
Black text
2.80:1 — fails AA
White text is the better of the two at7.51:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#50507f
protanopia
#50507f · ΔE00 0.0
deuteranopia
#50507f · ΔE00 0.0
tritanopia
#50507f · ΔE00 0.0
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPurple Navy at ΔE00 1.024: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Purple NavyΔE00 1.024 · #4e5180
- Roman VioletΔE00 1.276 · #4d517f
- Skipper BlueΔE00 1.508 · #4c4d78
- Altar of HeavenΔE00 1.598 · #4d4c80
- ProvocativeΔE00 1.658 · #4c5079
- Fully PurpleΔE00 1.76 · #514c7e
- DuskΔE00 2.121 · #4e5481
- Spirit DanceΔE00 2.139 · #514b80
- Purple PoolΔE00 2.609 · #4c4976
- Purple BerryΔE00 2.66 · #4c4a74
- Aurora SplendourΔE00 2.74 · #595682
- Mauve DuskΔE00 2.783 · #545883
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.