Recognised as Colour

#AD2229

#AD2229
Red
Dark
Nearest: Brown

#AD2229 is a red with RGB values 173, 34, 41 and HSL 357°, 67%, 41%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Brown.

Colour values

#AD2229#AD2229

HEX#AD2229

RGBrgb(173, 34, 41)

RGB (0–1)0.6784, 0.1333, 0.1608

RGB percentages67.8%, 13.3%, 16.1%

HSLhsl(357, 67.1%, 40.6%)

HSV / HSBhsv(357, 80.3%, 67.8%)

CMYK0%, 80.3%, 76.3%, 32.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,346,473

CSS custom property--colour: #AD2229;

Brightness & contrast

Relative luminance0.10188WCAG 2.x, 0 is black and 1 is white

Perceived brightness99.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.91:1

Contrast with white6.91:1WCAG normal text: AA

Contrast with black3.04:1WCAG normal text: Fail

Greyscale equivalent#404040

Inverted#52DDD6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4E4728no red cones; affects about 1% of men; ΔE 58.8 from the original

Deuteranopia#706524no green cones; the most common form, about 1% of men; ΔE 59.2 from the original

Tritanopia#BF0026no blue cones; rare, and affects men and women equally; ΔE 11.6 from the original

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

Contrast with white, large text6.91:1WCAG large text: AAA

Contrast with black, large text3.04:1WCAG large text: AA

Named colours

Brown · ΔE 5.3 Firebrick · ΔE 5.6 Dark red · ΔE 14 Maroon · ΔE 15.4 Crimson · ΔE 18.5 Indian red · ΔE 20.8

Nearest named CSS colourBrown (#A52A2A)ΔE 5.34, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#22ADA6

Analogous#AD226E, #AD6022

Triadic#29AD22, #2229AD

Split complementary#22AD60, #226EAD

Tetradic#6FAD22, #22ADA6, #6122AD

Tints, shades & saturation

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

Lighter +40%#EFACB0

Lighter +30%#E68287

Lighter +20%#DE575E

Lighter +10%#D62C35

Darker −10%#821A1F

Darker −20%#581115

Darker −30%#2D090B

Darker −40%#030001

More saturated +25%#C70812

Less saturated −25%#933C40

Channel breakdown

R173

G34

B41

Red173 (67.8%)

Green34 (13.3%)

Blue41 (16.1%)

Hue356.98°

Saturation (HSL)67.15%

Lightness40.59%

Dominant channelRed

Hex per channelR AD · G 22 · B 29

Keep nerding

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

#AD2229

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

Nerdulate something else