Recognised as Colour

#AC0031

#AC0031
Red
Dark
Nearest: Brown

#AC0031 is a red with RGB values 172, 0, 49 and HSL 343°, 100%, 34%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#AC0031#AC0031

HEX#AC0031

RGBrgb(172, 0, 49)

RGB (0–1)0.6745, 0, 0.1922

RGB percentages67.5%, 0%, 19.2%

HSLhsl(342.9, 100%, 33.7%)

HSV / HSBhsv(342.9, 100%, 67.5%)

CMYK0%, 100%, 71.5%, 32.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,272,241

CSS custom property--colour: #AC0031;

Brightness & contrast

Relative luminance0.08992WCAG 2.x, 0 is black and 1 is white

Perceived brightness95.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.5:1

Contrast with white7.5:1WCAG normal text: AAA

Contrast with black2.8:1WCAG normal text: Fail

Greyscale equivalent#282828

Inverted#53FFCE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#433F31no red cones; affects about 1% of men; ΔE 64.4 from the original

Deuteranopia#6A602Cno green cones; the most common form, about 1% of men; ΔE 64.6 from the original

Tritanopia#BE001Cno blue cones; rare, and affects men and women equally; ΔE 18.3 from the original

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

Contrast with white, large text7.5:1WCAG large text: AAA

Contrast with black, large text2.8:1WCAG large text: Fail

Named colours

Brown · ΔE 12.6 Firebrick · ΔE 14.2 Crimson · ΔE 17.4 Dark red · ΔE 20.8 Maroon · ΔE 21.2 Indian red · ΔE 23.8

Nearest named CSS colourBrown (#A52A2A)ΔE 12.63, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00AC7B

Analogous#AC0087, #AC2500

Triadic#31AC00, #0031AC

Split complementary#00AC25, #0087AC

Tetradic#87AC00, #00AC7B, #2500AC

Tints, shades & saturation

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

Lighter +40%#FF799F

Lighter +30%#FF467B

Lighter +20%#FF1356

Lighter +10%#DF0040

Darker −10%#790022

Darker −20%#460014

Darker −30%#130005

Darker −40%#000000

More saturated +25%#AC0031

Less saturated −25%#97163A

Channel breakdown

R172

B49

Red172 (67.5%)

Green0 (0%)

Blue49 (19.2%)

Hue342.91°

Saturation (HSL)100%

Lightness33.73%

Dominant channelRed

Hex per channelR AC · G 00 · B 31

Keep nerding

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

#AC0031

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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