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Recognised as Colour

#28286C

  • #28286C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#28286C is a blue with RGB values 40, 40, 108 and HSL 240°, 46%, 29%. It is a dark colour, so white text on it reaches 13:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#28286C#28286C
HEX#28286C
RGBrgb(40, 40, 108)
RGB (0–1)0.1569, 0.1569, 0.4235
RGB percentages15.7%, 15.7%, 42.4%
HSLhsl(240, 45.9%, 29%)
HSV / HSBhsv(240, 63%, 42.4%)
CMYK63%, 63%, 0%, 57.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,631,788
CSS custom property--colour: #28286C;

Brightness & contrast

Relative luminance0.03051WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.04:1
Contrast with white13.04:1WCAG normal text: AAA
Contrast with black1.61:1WCAG normal text: Fail
Greyscale equivalent#2D2D2D
Inverted#D7D793

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00346Eno red cones; affects about 1% of men; ΔE 13 from the original
Deuteranopia#002E6Bno green cones; the most common form, about 1% of men; ΔE 9.7 from the original
Tritanopia#003845no blue cones; rare, and affects men and women equally; ΔE 43.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.04:1WCAG large text: AAA
Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 11.4Midnight blue · ΔE 14.2Rebecca purple · ΔE 25.1Indigo · ΔE 32.2Slate blue · ΔE 33.7Navy · ΔE 36.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 11.41, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6C6C28
Analogous#284A6C, #4A286C
Triadic#6C2828, #286C28
Split complementary#6C4A28, #4A6C28
Tetradic#6C284A, #6C6C28, #286C4A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8C8CD4
Lighter +30%#6666C7
Lighter +20%#4444B6
Lighter +10%#363691
Darker −10%#1A1A47
Darker −20%#0C0C22
Darker −30%#000000
Darker −40%#000000
More saturated +25%#15157E
Less saturated −25%#3A3A5A

Channel breakdown

R40
G40
B108
Red40 (15.7%)
Green40 (15.7%)
Blue108 (42.4%)
Hue240°
Saturation (HSL)45.95%
Lightness29.02%
Dominant channelBlue
Hex per channelR 28 · G 28 · B 6C

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Every value on this page was computed from “28286c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.