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Recognised as Colour

#280B36

  • #280B36
  • Violet
  • Dark
  • Nearest: Midnight blue

#280B36 is a violet with RGB values 40, 11, 54 and HSL 280°, 66%, 13%. It is a dark colour, so white text on it reaches 17.6:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#280B36#280B36
HEX#280B36
RGBrgb(40, 11, 54)
RGB (0–1)0.1569, 0.0431, 0.2118
RGB percentages15.7%, 4.3%, 21.2%
HSLhsl(280.5, 66.2%, 12.7%)
HSV / HSBhsv(280.5, 79.6%, 21.2%)
CMYK25.9%, 79.6%, 0%, 78.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,624,310
CSS custom property--colour: #280B36;

Brightness & contrast

Relative luminance0.00957WCAG 2.x, 0 is black and 1 is white
Perceived brightness29.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.63:1
Contrast with white17.63:1WCAG normal text: AAA
Contrast with black1.19:1WCAG normal text: Fail
Greyscale equivalent#141414
Inverted#D7F4C9

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001737no red cones; affects about 1% of men; ΔE 17.9 from the original
Deuteranopia#071935no green cones; the most common form, about 1% of men; ΔE 18.9 from the original
Tritanopia#26141Fno blue cones; rare, and affects men and women equally; ΔE 21.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.63:1WCAG large text: AAA
Contrast with black, large text1.19:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 30Dark slateblue · ΔE 30.3Black · ΔE 33.2Rebecca purple · ΔE 40.1Purple · ΔE 43.8Indigo · ΔE 44
Nearest named CSS colourMidnight blue (#191970)ΔE 29.97, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#19360B
Analogous#130B36, #360B2E
Triadic#36280B, #0B3628
Split complementary#2F360B, #0B3613
Tetradic#36130B, #19360B, #0B2E36

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A237D6
Lighter +30%#8625B5
Lighter +20%#671C8B
Lighter +10%#471460
Darker −10%#09020C
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2B033E
Less saturated −25%#25132E

Channel breakdown

R40
G11
B54
Red40 (15.7%)
Green11 (4.3%)
Blue54 (21.2%)
Hue280.47°
Saturation (HSL)66.15%
Lightness12.75%
Dominant channelBlue
Hex per channelR 28 · G 0B · B 36

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Every value on this page was computed from “280b36” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.