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Recognised as Colour

#A34739

  • #A34739
  • Red
  • Dark
  • Nearest: Sienna

#A34739 is a red with RGB values 163, 71, 57 and HSL 8°, 48%, 43%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Sienna.

Colour values

#A34739#A34739
HEX#A34739
RGBrgb(163, 71, 57)
RGB (0–1)0.6392, 0.2784, 0.2235
RGB percentages63.9%, 27.8%, 22.4%
HSLhsl(7.9, 48.2%, 43.1%)
HSV / HSBhsv(7.9, 65%, 63.9%)
CMYK0%, 56.4%, 65%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,700,601
CSS custom property--colour: #A34739;

Brightness & contrast

Relative luminance0.12588WCAG 2.x, 0 is black and 1 is white
Perceived brightness106.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.97:1
Contrast with white5.97:1WCAG normal text: AA
Contrast with black3.52:1WCAG normal text: Fail
Greyscale equivalent#5A5A5A
Inverted#5CB8C6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5F5737no red cones; affects about 1% of men; ΔE 40 from the original
Deuteranopia#756B37no green cones; the most common form, about 1% of men; ΔE 40.9 from the original
Tritanopia#B23544no blue cones; rare, and affects men and women equally; ΔE 15.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.97:1WCAG large text: AAA
Contrast with black, large text3.52:1WCAG large text: AA

Named colours

Sienna · ΔE 11.7Brown · ΔE 13.9Indian red · ΔE 14.5Saddle brown · ΔE 18.2Firebrick · ΔE 21.9Maroon · ΔE 22.8
Nearest named CSS colourSienna (#A0522D)ΔE 11.71, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3995A3
Analogous#A33960, #A37C39
Triadic#39A347, #4739A3
Split complementary#39A37C, #3960A3
Tetradic#60A339, #3995A3, #7C39A3

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E9C5BF
Lighter +30%#DCA299
Lighter +20%#CE8074
Lighter +10%#C15D4E
Darker −10%#7D372C
Darker −20%#57261F
Darker −30%#321611
Darker −40%#0C0504
More saturated +25%#BF331D
Less saturated −25%#885B55

Channel breakdown

R163
G71
B57
Red163 (63.9%)
Green71 (27.8%)
Blue57 (22.4%)
Hue7.92°
Saturation (HSL)48.18%
Lightness43.14%
Dominant channelRed
Hex per channelR A3 · G 47 · B 39

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Every value on this page was computed from “a34739” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.