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Recognised as Colour

#AA471D

  • #AA471D
  • Orange
  • Dark
  • Nearest: Sienna

#AA471D is a orange with RGB values 170, 71, 29 and HSL 18°, 71%, 39%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Sienna.

Colour values

#AA471D#AA471D
HEX#AA471D
RGBrgb(170, 71, 29)
RGB (0–1)0.6667, 0.2784, 0.1137
RGB percentages66.7%, 27.8%, 11.4%
HSLhsl(17.9, 70.9%, 39%)
HSV / HSBhsv(17.9, 82.9%, 66.7%)
CMYK0%, 58.2%, 82.9%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,159,325
CSS custom property--colour: #AA471D;

Brightness & contrast

Relative luminance0.13141WCAG 2.x, 0 is black and 1 is white
Perceived brightness108.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.79:1
Contrast with white5.79:1WCAG normal text: AA
Contrast with black3.63:1WCAG normal text: Fail
Greyscale equivalent#595959
Inverted#55B8E2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#635817no red cones; affects about 1% of men; ΔE 42.8 from the original
Deuteranopia#7B6E19no green cones; the most common form, about 1% of men; ΔE 43.2 from the original
Tritanopia#BB2F3Fno blue cones; rare, and affects men and women equally; ΔE 25.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.79:1WCAG large text: AAA
Contrast with black, large text3.63:1WCAG large text: AA

Named colours

Sienna · ΔE 12Saddle brown · ΔE 13.4Brown · ΔE 17.9Chocolate · ΔE 18.7Firebrick · ΔE 18.8Dark red · ΔE 19.6
Nearest named CSS colourSienna (#A0522D)ΔE 11.98, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1D80AA
Analogous#AA1D39, #AA8D1D
Triadic#1DAA47, #471DAA
Split complementary#1DAA8D, #1D3AAA
Tetradic#3AAA1D, #1D80AA, #8E1DAA

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EFBAA4
Lighter +30%#E89978
Lighter +20%#E1794C
Lighter +10%#D65924
Darker −10%#7E3516
Darker −20%#53230E
Darker −30%#271007
Darker −40%#000000
More saturated +25%#C33D04
Less saturated −25%#915136

Channel breakdown

R170
G71
B29
Red170 (66.7%)
Green71 (27.8%)
Blue29 (11.4%)
Hue17.87°
Saturation (HSL)70.85%
Lightness39.02%
Dominant channelRed
Hex per channelR AA · G 47 · B 1D

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Every value on this page was computed from “aa471d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.