Recognised as Colour

#A21740

#A21740
Red
Dark
Nearest: Brown

#A21740 is a red with RGB values 162, 23, 64 and HSL 342°, 75%, 36%. It is a dark colour, so white text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#A21740#A21740

HEX#A21740

RGBrgb(162, 23, 64)

RGB (0–1)0.6353, 0.0902, 0.251

RGB percentages63.5%, 9%, 25.1%

HSLhsl(342.3, 75.1%, 36.3%)

HSV / HSBhsv(342.3, 85.8%, 63.5%)

CMYK0%, 85.8%, 60.5%, 36.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,622,784

CSS custom property--colour: #A21740;

Brightness & contrast

Relative luminance0.08664WCAG 2.x, 0 is black and 1 is white

Perceived brightness92.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.68:1

Contrast with white7.68:1WCAG normal text: AAA

Contrast with black2.73:1WCAG normal text: Fail

Greyscale equivalent#383838

Inverted#5DE8BF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#414141no red cones; affects about 1% of men; ΔE 57.8 from the original

Deuteranopia#645D3Cno green cones; the most common form, about 1% of men; ΔE 58.7 from the original

Tritanopia#B2002Ano 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 text7.68:1WCAG large text: AAA

Contrast with black, large text2.73:1WCAG large text: Fail

Named colours

Brown · ΔE 17.9 Indian red · ΔE 22.6 Firebrick · ΔE 24.1 Maroon · ΔE 27.2 Crimson · ΔE 27.6 Dark red · ΔE 28.8

Nearest named CSS colourBrown (#A52A2A)ΔE 17.87, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#17A279

Analogous#A21785, #A23317

Triadic#40A217, #1740A2

Split complementary#17A233, #1785A2

Tetradic#86A217, #17A279, #3417A2

Tints, shades & saturation

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

Lighter +40%#F095B0

Lighter +30%#EA688F

Lighter +20%#E33C6D

Lighter +10%#CF1D52

Darker −10%#75112E

Darker −20%#490A1D

Darker −30%#1C040B

Darker −40%#000000

More saturated +25%#B90037

Less saturated −25%#8B2E49

Channel breakdown

R162

G23

B64

Red162 (63.5%)

Green23 (9%)

Blue64 (25.1%)

Hue342.3°

Saturation (HSL)75.14%

Lightness36.27%

Dominant channelRed

Hex per channelR A2 · G 17 · B 40

Keep nerding

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

#A21740

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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