Colour

#A8002B

#A8002B
Red
Dark
Nearest: Brown

#A8002B is a red with RGB values 168, 0, 43 and HSL 345°, 100%, 33%. 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

#A8002B#A8002B

HEX#A8002B

RGBrgb(168, 0, 43)

RGB (0–1)0.6588, 0, 0.1686

RGB percentages65.9%, 0%, 16.9%

HSLhsl(344.6, 100%, 32.9%)

HSV / HSBhsv(344.6, 100%, 65.9%)

CMYK0%, 100%, 74.4%, 34.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,010,091

CSS custom property--colour: #A8002B;

Brightness & contrast

Relative luminance0.08499WCAG 2.x, 0 is black and 1 is white

Perceived brightness93 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.78:1

Contrast with white7.78:1WCAG normal text: AAA

Contrast with black2.7:1WCAG normal text: Fail

Greyscale equivalent#272727

Inverted#57FFD4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#423D2Bno red cones; affects about 1% of men; ΔE 63.3 from the original

Deuteranopia#685E25no green cones; the most common form, about 1% of men; ΔE 63.8 from the original

Tritanopia#B90018no blue cones; rare, and affects men and women equally; ΔE 16.6 from the original

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

Contrast with white, large text7.78:1WCAG large text: AAA

Contrast with black, large text2.7:1WCAG large text: Fail

Named colours

Brown · ΔE 10.7 Firebrick · ΔE 11.8 Crimson · ΔE 17.8 Dark red · ΔE 17.9 Maroon · ΔE 18.4 Indian red · ΔE 24.1

Nearest named CSS colourBrown (#A52A2A)ΔE 10.72, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00A87D

Analogous#A8007F, #A82900

Triadic#2BA800, #002BA8

Split complementary#00A829, #007FA8

Tetradic#7FA800, #00A87D, #2900A8

Tints, shades & saturation

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

Lighter +40%#FF7598

Lighter +30%#FF4272

Lighter +20%#FF0F4C

Lighter +10%#DB0038

Darker −10%#75001E

Darker −20%#420011

Darker −30%#0F0004

Darker −40%#000000

More saturated +25%#A8002B

Less saturated −25%#931535

Channel breakdown

R168

B43

Red168 (65.9%)

Green0 (0%)

Blue43 (16.9%)

Hue344.64°

Saturation (HSL)100%

Lightness32.94%

Dominant channelRed

Hex per channelR A8 · G 00 · B 2B

Keep nerding

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

#A8002B

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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