Recognised as Colour

#A4223A

#A4223A
Red
Dark
Nearest: Brown

#A4223A is a red with RGB values 164, 34, 58 and HSL 349°, 66%, 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 Brown.

Colour values

#A4223A#A4223A

HEX#A4223A

RGBrgb(164, 34, 58)

RGB (0–1)0.6431, 0.1333, 0.2275

RGB percentages64.3%, 13.3%, 22.7%

HSLhsl(348.9, 65.7%, 38.8%)

HSV / HSBhsv(348.9, 79.3%, 64.3%)

CMYK0%, 79.3%, 64.6%, 35.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,756,666

CSS custom property--colour: #A4223A;

Brightness & contrast

Relative luminance0.09342WCAG 2.x, 0 is black and 1 is white

Perceived brightness95.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.32:1

Contrast with white7.32:1WCAG normal text: AAA

Contrast with black2.87:1WCAG normal text: Fail

Greyscale equivalent#3F3F3F

Inverted#5BDDC5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#48453Ano red cones; affects about 1% of men; ΔE 55.7 from the original

Deuteranopia#696036no green cones; the most common form, about 1% of men; ΔE 56.2 from the original

Tritanopia#B4002Cno blue cones; rare, and affects men and women equally; ΔE 14.6 from the original

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

Contrast with white, large text7.32:1WCAG large text: AAA

Contrast with black, large text2.87:1WCAG large text: Fail

Named colours

Brown · ΔE 11.5 Firebrick · ΔE 18.6 Indian red · ΔE 18.8 Maroon · ΔE 22.2 Dark red · ΔE 23.5 Crimson · ΔE 25.2

Nearest named CSS colourBrown (#A52A2A)ΔE 11.54, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#22A48C

Analogous#A4227B, #A44B22

Triadic#3AA422, #223AA4

Split complementary#22A44B, #227BA4

Tetradic#7BA422, #22A48C, #4B22A4

Tints, shades & saturation

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

Lighter +40%#ECA6B3

Lighter +30%#E47B8F

Lighter +20%#DB516B

Lighter +10%#CE2B49

Darker −10%#7A192B

Darker −20%#50101C

Darker −30%#25080D

Darker −40%#000000

More saturated +25%#BD092A

Less saturated −25%#8B3B4A

Channel breakdown

R164

G34

B58

Red164 (64.3%)

Green34 (13.3%)

Blue58 (22.7%)

Hue348.92°

Saturation (HSL)65.66%

Lightness38.82%

Dominant channelRed

Hex per channelR A4 · G 22 · B 3A

Keep nerding

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

#A4223A

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