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Recognised as Colour

#A55B50

  • #A55B50
  • Red
  • Dark
  • Nearest: Sienna

#A55B50 is a red with RGB values 165, 91, 80 and HSL 8°, 35%, 48%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Sienna.

Colour values

#A55B50#A55B50
HEX#A55B50
RGBrgb(165, 91, 80)
RGB (0–1)0.6471, 0.3569, 0.3137
RGB percentages64.7%, 35.7%, 31.4%
HSLhsl(7.8, 34.7%, 48%)
HSV / HSBhsv(7.8, 51.5%, 64.7%)
CMYK0%, 44.8%, 51.5%, 35.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,836,816
CSS custom property--colour: #A55B50;

Brightness & contrast

Relative luminance0.16061WCAG 2.x, 0 is black and 1 is white
Perceived brightness117.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.99:1
Contrast with white4.99:1WCAG normal text: AA
Contrast with black4.21:1WCAG normal text: Fail
Greyscale equivalent#6A6A6A
Inverted#5AA4AF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6C664Fno red cones; affects about 1% of men; ΔE 31.6 from the original
Deuteranopia#7E764Fno green cones; the most common form, about 1% of men; ΔE 32.5 from the original
Tritanopia#B35058no blue cones; rare, and affects men and women equally; ΔE 12.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.99:1WCAG large text: AAA
Contrast with black, large text4.21:1WCAG large text: AA

Named colours

Sienna · ΔE 16.3Indian red · ΔE 17.2Saddle brown · ΔE 23.5Light coral · ΔE 23.5Dark salmon · ΔE 24.2Rosy brown · ΔE 24.3
Nearest named CSS colourSienna (#A0522D)ΔE 16.26, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#509AA5
Analogous#A55070, #A58550
Triadic#50A55B, #5B50A5
Split complementary#50A586, #5070A5
Tetradic#70A550, #509AA5, #8550A5

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EBD9D6
Lighter +30%#DAB9B4
Lighter +20%#CA9991
Lighter +10%#B9786F
Darker −10%#83483F
Darker −20%#60352F
Darker −30%#3E221E
Darker −40%#1C0F0D
More saturated +25%#C44431
Less saturated −25%#86726F

Channel breakdown

R165
G91
B80
Red165 (64.7%)
Green91 (35.7%)
Blue80 (31.4%)
Hue7.76°
Saturation (HSL)34.69%
Lightness48.04%
Dominant channelRed
Hex per channelR A5 · G 5B · B 50

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Every value on this page was computed from “a55b50” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.