Recognised as Colour

#A2181C

#A2181C
Red
Dark
Nearest: Firebrick

#A2181C is a red with RGB values 162, 24, 28 and HSL 358°, 74%, 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 Firebrick.

Colour values

#A2181C#A2181C

HEX#A2181C

RGBrgb(162, 24, 28)

RGB (0–1)0.6353, 0.0941, 0.1098

RGB percentages63.5%, 9.4%, 11%

HSLhsl(358.3, 74.2%, 36.5%)

HSV / HSBhsv(358.3, 85.2%, 63.5%)

CMYK0%, 85.2%, 82.7%, 36.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,623,004

CSS custom property--colour: #A2181C;

Brightness & contrast

Relative luminance0.08418WCAG 2.x, 0 is black and 1 is white

Perceived brightness91 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.83:1

Contrast with white7.83:1WCAG normal text: AAA

Contrast with black2.68:1WCAG normal text: Fail

Greyscale equivalent#363636

Inverted#5DE7E3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#473F1Ano red cones; affects about 1% of men; ΔE 57.6 from the original

Deuteranopia#685C15no green cones; the most common form, about 1% of men; ΔE 57.5 from the original

Tritanopia#B3001Cno blue cones; rare, and affects men and women equally; ΔE 9.2 from the original

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

Contrast with white, large text7.83:1WCAG large text: AAA

Contrast with black, large text2.68:1WCAG large text: Fail

Named colours

Firebrick · ΔE 5.2 Brown · ΔE 7 Dark red · ΔE 9.2 Maroon · ΔE 11.1 Crimson · ΔE 21.2 Indian red · ΔE 24.6

Nearest named CSS colourFirebrick (#B22222)ΔE 5.22, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#18A29E

Analogous#A21861, #A25918

Triadic#1CA218, #181CA2

Split complementary#18A259, #1861A2

Tetradic#61A218, #18A29E, #5918A2

Tints, shades & saturation

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

Lighter +40%#F09699

Lighter +30%#E96A6E

Lighter +20%#E23E42

Lighter +10%#CE1F24

Darker −10%#761114

Darker −20%#490B0D

Darker −30%#1D0405

Darker −40%#000000

More saturated +25%#B90106

Less saturated −25%#8B2F32

Channel breakdown

R162

G24

B28

Red162 (63.5%)

Green24 (9.4%)

Blue28 (11%)

Hue358.26°

Saturation (HSL)74.19%

Lightness36.47%

Dominant channelRed

Hex per channelR A2 · G 18 · B 1C

Keep nerding

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

#A2181C

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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