Recognised as Colour

#A80037

#A80037
Red
Dark
Nearest: Brown

#A80037 is a red with RGB values 168, 0, 55 and HSL 340°, 100%, 33%. It is a dark colour, so white text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#A80037#A80037

HEX#A80037

RGBrgb(168, 0, 55)

RGB (0–1)0.6588, 0, 0.2157

RGB percentages65.9%, 0%, 21.6%

HSLhsl(340.4, 100%, 32.9%)

HSV / HSBhsv(340.4, 100%, 65.9%)

CMYK0%, 100%, 67.3%, 34.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,010,103

CSS custom property--colour: #A80037;

Brightness & contrast

Relative luminance0.08601WCAG 2.x, 0 is black and 1 is white

Perceived brightness93.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.72:1

Contrast with white7.72:1WCAG normal text: AAA

Contrast with black2.72:1WCAG normal text: Fail

Greyscale equivalent#282828

Inverted#57FFC8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#403E37no red cones; affects about 1% of men; ΔE 63.2 from the original

Deuteranopia#675E32no green cones; the most common form, about 1% of men; ΔE 63.7 from the original

Tritanopia#B9001Fno blue cones; rare, and affects men and women equally; ΔE 20.1 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text7.72:1WCAG large text: AAA

Contrast with black, large text2.72:1WCAG large text: Fail

Named colours

Brown · ΔE 15.2 Firebrick · ΔE 18.8 Crimson · ΔE 21.2 Indian red · ΔE 23.9 Maroon · ΔE 24 Dark red · ΔE 24.5

Nearest named CSS colourBrown (#A52A2A)ΔE 15.19, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#00A871

Analogous#A8008B, #A81D00

Triadic#37A800, #0037A8

Split complementary#00A81D, #008BA8

Tetradic#8BA800, #00A871, #1D00A8

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FF75A2

Lighter +30%#FF4280

Lighter +20%#FF0F5E

Lighter +10%#DB0048

Darker −10%#750026

Darker −20%#420016

Darker −30%#0F0005

Darker −40%#000000

More saturated +25%#A80037

Less saturated −25%#93153E

Channel breakdown

R168

B55

Red168 (65.9%)

Green0 (0%)

Blue55 (21.6%)

Hue340.36°

Saturation (HSL)100%

Lightness32.94%

Dominant channelRed

Hex per channelR A8 · G 00 · B 37

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#A80037

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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