Recognised as Colour

#A12821

#A12821
Red
Dark
Nearest: Brown

#A12821 is a red with RGB values 161, 40, 33 and HSL 3°, 66%, 38%. It is a dark colour, so white text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#A12821#A12821

HEX#A12821

RGBrgb(161, 40, 33)

RGB (0–1)0.6314, 0.1569, 0.1294

RGB percentages63.1%, 15.7%, 12.9%

HSLhsl(3.3, 66%, 38%)

HSV / HSBhsv(3.3, 79.5%, 63.1%)

CMYK0%, 75.2%, 79.5%, 36.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,561,569

CSS custom property--colour: #A12821;

Brightness & contrast

Relative luminance0.09204WCAG 2.x, 0 is black and 1 is white

Perceived brightness93.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.39:1

Contrast with white7.39:1WCAG normal text: AAA

Contrast with black2.84:1WCAG normal text: Fail

Greyscale equivalent#414141

Inverted#5ED7DE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4D451Fno red cones; affects about 1% of men; ΔE 52.7 from the original

Deuteranopia#6B5F1Cno green cones; the most common form, about 1% of men; ΔE 52.6 from the original

Tritanopia#B20028no blue cones; rare, and affects men and women equally; ΔE 13.4 from the original

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

Contrast with white, large text7.39:1WCAG large text: AAA

Contrast with black, large text2.84:1WCAG large text: Fail

Named colours

Brown · ΔE 4.1 Firebrick · ΔE 8.4 Dark red · ΔE 11.1 Maroon · ΔE 11.5 Sienna · ΔE 20.8 Indian red · ΔE 21.3

Nearest named CSS colourBrown (#A52A2A)ΔE 4.07, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#219AA1

Analogous#A1215A, #A16821

Triadic#21A128, #2821A1

Split complementary#21A168, #215AA1

Tetradic#5AA121, #219AA1, #6821A1

Tints, shades & saturation

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

Lighter +40%#ECA6A2

Lighter +30%#E37E78

Lighter +20%#DB554D

Lighter +10%#CB332A

Darker −10%#771D18

Darker −20%#4C1310

Darker −30%#220807

Darker −40%#000000

More saturated +25%#B91209

Less saturated −25%#893E39

Channel breakdown

R161

G40

B33

Red161 (63.1%)

Green40 (15.7%)

Blue33 (12.9%)

Hue3.28°

Saturation (HSL)65.98%

Lightness38.04%

Dominant channelRed

Hex per channelR A1 · G 28 · B 21

Keep nerding

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

#A12821

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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