Recognised as Colour

#AA1B22

#AA1B22
Red
Dark
Nearest: Firebrick

#AA1B22 is a red with RGB values 170, 27, 34 and HSL 357°, 73%, 39%. 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

#AA1B22#AA1B22

HEX#AA1B22

RGBrgb(170, 27, 34)

RGB (0–1)0.6667, 0.1059, 0.1333

RGB percentages66.7%, 10.6%, 13.3%

HSLhsl(357.1, 72.6%, 38.6%)

HSV / HSBhsv(357.1, 84.1%, 66.7%)

CMYK0%, 84.1%, 80%, 33.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,148,066

CSS custom property--colour: #AA1B22;

Brightness & contrast

Relative luminance0.09445WCAG 2.x, 0 is black and 1 is white

Perceived brightness95.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.27:1

Contrast with white7.27:1WCAG normal text: AAA

Contrast with black2.89:1WCAG normal text: Fail

Greyscale equivalent#3A3A3A

Inverted#55E4DD

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4B4320no red cones; affects about 1% of men; ΔE 59.4 from the original

Deuteranopia#6D611Bno green cones; the most common form, about 1% of men; ΔE 59.5 from the original

Tritanopia#BC0020no blue cones; rare, and affects men and women equally; ΔE 10.3 from the original

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

Contrast with white, large text7.27:1WCAG large text: AAA

Contrast with black, large text2.89:1WCAG large text: Fail

Named colours

Firebrick · ΔE 3.7 Brown · ΔE 7.2 Dark red · ΔE 11.8 Maroon · ΔE 13.9 Crimson · ΔE 18.6 Indian red · ΔE 23.4

Nearest named CSS colourFirebrick (#B22222)ΔE 3.69, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1BAAA3

Analogous#AA1B6A, #AA5B1B

Triadic#22AA1B, #1B22AA

Split complementary#1BAA5C, #1B69AA

Tetradic#6AAA1B, #1BAAA3, #5B1BAA

Tints, shades & saturation

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

Lighter +40%#F0A1A5

Lighter +30%#E9757B

Lighter +20%#E24950

Lighter +10%#D6222B

Darker −10%#7E1419

Darker −20%#520D10

Darker −30%#260608

Darker −40%#000000

More saturated +25%#C3020C

Less saturated −25%#913438

Channel breakdown

R170

G27

B34

Red170 (66.7%)

Green27 (10.6%)

Blue34 (13.3%)

Hue357.06°

Saturation (HSL)72.59%

Lightness38.63%

Dominant channelRed

Hex per channelR AA · G 1B · B 22

Keep nerding

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

#AA1B22

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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