Colour

#A3333B

#A3333B
Red
Dark
Nearest: Brown

#A3333B is a red with RGB values 163, 51, 59 and HSL 356°, 52%, 42%. It is a dark colour, so white text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Brown.

Colour values

#A3333B#A3333B

HEX#A3333B

RGBrgb(163, 51, 59)

RGB (0–1)0.6392, 0.2, 0.2314

RGB percentages63.9%, 20%, 23.1%

HSLhsl(355.7, 52.3%, 42%)

HSV / HSBhsv(355.7, 68.7%, 63.9%)

CMYK0%, 68.7%, 63.8%, 36.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,695,483

CSS custom property--colour: #A3333B;

Brightness & contrast

Relative luminance0.1047WCAG 2.x, 0 is black and 1 is white

Perceived brightness99.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.79:1

Contrast with white6.79:1WCAG normal text: AA

Contrast with black3.09:1WCAG normal text: Fail

Greyscale equivalent#4B4B4B

Inverted#5CCCC4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#514C3Ano red cones; affects about 1% of men; ΔE 49.2 from the original

Deuteranopia#6D6438no green cones; the most common form, about 1% of men; ΔE 50 from the original

Tritanopia#B31737no blue cones; rare, and affects men and women equally; ΔE 13.5 from the original

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

Contrast with white, large text6.79:1WCAG large text: AAA

Contrast with black, large text3.09:1WCAG large text: AA

Named colours

Brown · ΔE 9.7 Indian red · ΔE 14.8 Firebrick · ΔE 18.8 Maroon · ΔE 21.2 Sienna · ΔE 22.8 Dark red · ΔE 23

Nearest named CSS colourBrown (#A52A2A)ΔE 9.73, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#33A39B

Analogous#A33373, #A36333

Triadic#3BA333, #333BA3

Split complementary#33A363, #3373A3

Tetradic#73A333, #33A39B, #6333A3

Tints, shades & saturation

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

Lighter +40%#E9B9BC

Lighter +30%#DD9297

Lighter +20%#D16B72

Lighter +10%#C5444E

Darker −10%#7C272D

Darker −20%#551B1F

Darker −30%#2E0F11

Darker −40%#080203

More saturated +25%#BE1824

Less saturated −25%#884E52

Channel breakdown

R163

G51

B59

Red163 (63.9%)

Green51 (20%)

Blue59 (23.1%)

Hue355.71°

Saturation (HSL)52.34%

Lightness41.96%

Dominant channelRed

Hex per channelR A3 · G 33 · B 3B

Keep nerding

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

#A3333B

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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