Recognised as Colour

#AA1822

#AA1822
Red
Dark
Nearest: Firebrick

#AA1822 is a red with RGB values 170, 24, 34 and HSL 356°, 75%, 38%. It is a dark colour, so white text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#AA1822#AA1822

HEX#AA1822

RGBrgb(170, 24, 34)

RGB (0–1)0.6667, 0.0941, 0.1333

RGB percentages66.7%, 9.4%, 13.3%

HSLhsl(355.9, 75.3%, 38%)

HSV / HSBhsv(355.9, 85.9%, 66.7%)

CMYK0%, 85.9%, 80%, 33.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,147,298

CSS custom property--colour: #AA1822;

Brightness & contrast

Relative luminance0.09315WCAG 2.x, 0 is black and 1 is white

Perceived brightness95.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.34:1

Contrast with white7.34:1WCAG normal text: AAA

Contrast with black2.86:1WCAG normal text: Fail

Greyscale equivalent#383838

Inverted#55E7DD

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4A4221no red cones; affects about 1% of men; ΔE 60 from the original

Deuteranopia#6D611Bno green cones; the most common form, about 1% of men; ΔE 60.3 from the original

Tritanopia#BC001Eno blue cones; rare, and affects men and women equally; ΔE 10.4 from the original

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

Contrast with white, large text7.34:1WCAG large text: AAA

Contrast with black, large text2.86:1WCAG large text: Fail

Named colours

Firebrick · ΔE 4 Brown · ΔE 7.6 Dark red · ΔE 12 Maroon · ΔE 14.1 Crimson · ΔE 18.1 Indian red · ΔE 23.8

Nearest named CSS colourFirebrick (#B22222)ΔE 4.01, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#18AAA0

Analogous#AA186B, #AA5718

Triadic#22AA18, #1822AA

Split complementary#18AA57, #186BAA

Tetradic#6BAA18, #18AAA0, #5718AA

Tints, shades & saturation

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

Lighter +40%#F19DA3

Lighter +30%#EB7079

Lighter +20%#E5434F

Lighter +10%#D71E2B

Darker −10%#7D1219

Darker −20%#510B10

Darker −30%#240507

Darker −40%#000000

More saturated +25%#C2000D

Less saturated −25%#923037

Channel breakdown

R170

G24

B34

Red170 (66.7%)

Green24 (9.4%)

Blue34 (13.3%)

Hue355.89°

Saturation (HSL)75.26%

Lightness38.04%

Dominant channelRed

Hex per channelR AA · G 18 · B 22

Keep nerding

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

#AA1822

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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