Recognised as Colour

#A31338

#A31338
Red
Dark
Nearest: Brown

#A31338 is a red with RGB values 163, 19, 56 and HSL 345°, 79%, 36%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#A31338#A31338

HEX#A31338

RGBrgb(163, 19, 56)

RGB (0–1)0.6392, 0.0745, 0.2196

RGB percentages63.9%, 7.5%, 22%

HSLhsl(344.6, 79.1%, 35.7%)

HSV / HSBhsv(344.6, 88.3%, 63.9%)

CMYK0%, 88.3%, 65.6%, 36.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,687,288

CSS custom property--colour: #A31338;

Brightness & contrast

Relative luminance0.08538WCAG 2.x, 0 is black and 1 is white

Perceived brightness92.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.76:1

Contrast with white7.76:1WCAG normal text: AAA

Contrast with black2.71:1WCAG normal text: Fail

Greyscale equivalent#343434

Inverted#5CECC7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#424038no red cones; affects about 1% of men; ΔE 59.1 from the original

Deuteranopia#655D34no green cones; the most common form, about 1% of men; ΔE 59.8 from the original

Tritanopia#B30025no blue cones; rare, and affects men and women equally; ΔE 16.7 from the original

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

Contrast with white, large text7.76:1WCAG large text: AAA

Contrast with black, large text2.71:1WCAG large text: Fail

Named colours

Brown · ΔE 13.7 Firebrick · ΔE 19.4 Indian red · ΔE 21.8 Maroon · ΔE 23.1 Crimson · ΔE 24.1 Dark red · ΔE 24.2

Nearest named CSS colourBrown (#A52A2A)ΔE 13.73, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#13A37E

Analogous#A31380, #A33613

Triadic#38A313, #1338A3

Split complementary#13A336, #1380A3

Tetradic#80A313, #13A37E, #3613A3

Tints, shades & saturation

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

Lighter +40%#F290A9

Lighter +30%#ED6286

Lighter +20%#E73563

Lighter +10%#D11848

Darker −10%#750E28

Darker −20%#480819

Darker −30%#1A0309

Darker −40%#000000

More saturated +25%#B6002F

Less saturated −25%#8C2A43

Channel breakdown

R163

G19

B56

Red163 (63.9%)

Green19 (7.5%)

Blue56 (22%)

Hue344.58°

Saturation (HSL)79.12%

Lightness35.69%

Dominant channelRed

Hex per channelR A3 · G 13 · B 38

Keep nerding

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

#A31338

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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