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Recognised as Colour

#280D73

  • #280D73
  • Violet
  • Dark
  • Nearest: Midnight blue

#280D73 is a violet with RGB values 40, 13, 115 and HSL 256°, 80%, 25%. It is a dark colour, so white text on it reaches 15:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#280D73#280D73
HEX#280D73
RGBrgb(40, 13, 115)
RGB (0–1)0.1569, 0.051, 0.451
RGB percentages15.7%, 5.1%, 45.1%
HSLhsl(255.9, 79.7%, 25.1%)
HSV / HSBhsv(255.9, 88.7%, 45.1%)
CMYK65.2%, 88.7%, 0%, 54.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,624,883
CSS custom property--colour: #280D73;

Brightness & contrast

Relative luminance0.01977WCAG 2.x, 0 is black and 1 is white
Perceived brightness45.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.05:1
Contrast with white15.05:1WCAG normal text: AAA
Contrast with black1.4:1WCAG normal text: Fail
Greyscale equivalent#1A1A1A
Inverted#D7F28C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002976no red cones; affects about 1% of men; ΔE 20.1 from the original
Deuteranopia#002371no green cones; the most common form, about 1% of men; ΔE 17.6 from the original
Tritanopia#002E42no blue cones; rare, and affects men and women equally; ΔE 58.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text15.05:1WCAG large text: AAA
Contrast with black, large text1.4:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 9.1Indigo · ΔE 12.5Navy · ΔE 14.5Rebecca purple · ΔE 18.5Dark blue · ΔE 19.2Dark slateblue · ΔE 23.4
Nearest named CSS colourMidnight blue (#191970)ΔE 9.07, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#58730D
Analogous#0D2573, #5B0D73
Triadic#73280D, #0D7328
Split complementary#735B0D, #25730D
Tetradic#730D25, #58730D, #0D735B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#855FED
Lighter +30%#6231E8
Lighter +20%#4817CF
Lighter +10%#3812A1
Darker −10%#180845
Darker −20%#080317
Darker −30%#000000
Darker −40%#000000
More saturated +25%#220080
Less saturated −25%#301D63

Channel breakdown

R40
G13
B115
Red40 (15.7%)
Green13 (5.1%)
Blue115 (45.1%)
Hue255.88°
Saturation (HSL)79.69%
Lightness25.1%
Dominant channelBlue
Hex per channelR 28 · G 0D · B 73

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Every value on this page was computed from “280d73” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.