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Colour

#8B0040

  • #8B0040
  • Red
  • Dark
  • Nearest: Brown

#8B0040 is a red with RGB values 139, 0, 64 and HSL 332°, 100%, 27%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#8B0040#8B0040
HEX#8B0040
RGBrgb(139, 0, 64)
RGB (0–1)0.5451, 0, 0.251
RGB percentages54.5%, 0%, 25.1%
HSLhsl(332.4, 100%, 27.3%)
HSV / HSBhsv(332.4, 100%, 54.5%)
CMYK0%, 100%, 54%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer9,109,568
CSS custom property--colour: #8B0040;

Brightness & contrast

Relative luminance0.05859WCAG 2.x, 0 is black and 1 is white
Perceived brightness79 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.67:1
Contrast with white9.67:1WCAG normal text: AAA
Contrast with black2.17:1WCAG normal text: Fail
Greyscale equivalent#222222
Inverted#74FFBF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2F3441no red cones; affects about 1% of men; ΔE 54.4 from the original
Deuteranopia#514D3Dno green cones; the most common form, about 1% of men; ΔE 55.4 from the original
Tritanopia#980023no blue cones; rare, and affects men and women equally; ΔE 23 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.67:1WCAG large text: AAA
Contrast with black, large text2.17:1WCAG large text: Fail

Named colours

Brown · ΔE 27.8Medium violet red · ΔE 30.5Indian red · ΔE 31.4Pale violetred · ΔE 32.8Maroon · ΔE 34.4Firebrick · ΔE 34.9
Nearest named CSS colourBrown (#A52A2A)ΔE 27.82, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#008B4B
Analogous#8B0086, #8B0500
Triadic#408B00, #00408B
Split complementary#008B06, #00868B
Tetradic#858B00, #008B4B, #05008B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FF58A5
Lighter +30%#FF2589
Lighter +20%#F1006F
Lighter +10%#BE0057
Darker −10%#580029
Darker −20%#250011
Darker −30%#000000
Darker −40%#000000
More saturated +25%#8B0040
Less saturated −25%#7A1141

Channel breakdown

R139
G0
B64
Red139 (54.5%)
Green0 (0%)
Blue64 (25.1%)
Hue332.37°
Saturation (HSL)100%
Lightness27.25%
Dominant channelRed
Hex per channelR 8B · G 00 · B 40

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Every value on this page was computed from “8b0040” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.