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Recognised as Colour

#A3700A

  • #A3700A
  • Orange
  • Dark
  • Nearest: Dark goldenrod

#A3700A is a orange with RGB values 163, 112, 10 and HSL 40°, 88%, 34%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Dark goldenrod.

Colour values

#A3700A#A3700A
HEX#A3700A
RGBrgb(163, 112, 10)
RGB (0–1)0.6392, 0.4392, 0.0392
RGB percentages63.9%, 43.9%, 3.9%
HSLhsl(40, 88.4%, 33.9%)
HSV / HSBhsv(40, 93.9%, 63.9%)
CMYK0%, 31.3%, 93.9%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,711,050
CSS custom property--colour: #A3700A;

Brightness & contrast

Relative luminance0.19397WCAG 2.x, 0 is black and 1 is white
Perceived brightness123.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.88:1
Contrast with white4.3:1WCAG normal text: Fail
Contrast with black4.88:1WCAG normal text: AA
Greyscale equivalent#737373
Inverted#5C8FF5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#837200no red cones; affects about 1% of men; ΔE 16.8 from the original
Deuteranopia#8F7F11no green cones; the most common form, about 1% of men; ΔE 17.8 from the original
Tritanopia#B2625Fno blue cones; rare, and affects men and women equally; ΔE 44.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.3:1WCAG large text: AA
Contrast with black, large text4.88:1WCAG large text: AAA

Named colours

Dark goldenrod · ΔE 11Peru · ΔE 15.9Goldenrod · ΔE 23.9Saddle brown · ΔE 24.5Chocolate · ΔE 24.9Olive · ΔE 25.6
Nearest named CSS colourDark goldenrod (#B8860B)ΔE 10.95, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0A3DA3
Analogous#A3230A, #89A30A
Triadic#0AA370, #700AA3
Split complementary#0A8AA3, #240AA3
Tetradic#0AA323, #0A3DA3, #A30A89

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F7D082
Lighter +30%#F4BE52
Lighter +20%#F1AC22
Lighter +10%#D3910D
Darker −10%#734F07
Darker −20%#432E04
Darker −30%#130D01
Darker −40%#000000
More saturated +25%#AD7300
Less saturated −25%#8D6920

Channel breakdown

R163
G112
B10
Red163 (63.9%)
Green112 (43.9%)
Blue10 (3.9%)
Hue40°
Saturation (HSL)88.44%
Lightness33.92%
Dominant channelRed
Hex per channelR A3 · G 70 · B 0A

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Every value on this page was computed from “a3700a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.