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Colour

#A33C0A

  • #A33C0A
  • Orange
  • Dark
  • Nearest: Saddle brown

#A33C0A is a orange with RGB values 163, 60, 10 and HSL 20°, 88%, 34%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Saddle brown.

Colour values

#A33C0A#A33C0A
HEX#A33C0A
RGBrgb(163, 60, 10)
RGB (0–1)0.6392, 0.2353, 0.0392
RGB percentages63.9%, 23.5%, 3.9%
HSLhsl(19.6, 88.4%, 33.9%)
HSV / HSBhsv(19.6, 93.9%, 63.9%)
CMYK0%, 63.2%, 93.9%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,697,738
CSS custom property--colour: #A33C0A;

Brightness & contrast

Relative luminance0.1104WCAG 2.x, 0 is black and 1 is white
Perceived brightness100.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.55:1
Contrast with white6.55:1WCAG normal text: AA
Contrast with black3.21:1WCAG normal text: Fail
Greyscale equivalent#4E4E4E
Inverted#5CC3F5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5A4F00no red cones; affects about 1% of men; ΔE 45 from the original
Deuteranopia#736602no green cones; the most common form, about 1% of men; ΔE 45.4 from the original
Tritanopia#B41F34no blue cones; rare, and affects men and women equally; ΔE 26.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.55:1WCAG large text: AAA
Contrast with black, large text3.21:1WCAG large text: AA

Named colours

Saddle brown · ΔE 15.8Dark red · ΔE 16.8Sienna · ΔE 17Firebrick · ΔE 18.3Maroon · ΔE 18.6Chocolate · ΔE 19
Nearest named CSS colourSaddle brown (#8B4513)ΔE 15.79, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0A71A3
Analogous#A30A24, #A3890A
Triadic#0AA33C, #3C0AA3
Split complementary#0AA389, #0A24A3
Tetradic#24A30A, #0A71A3, #890AA3

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F7A882
Lighter +30%#F48752
Lighter +20%#F16622
Lighter +10%#D34E0D
Darker −10%#732A07
Darker −20%#431904
Darker −30%#130701
Darker −40%#000000
More saturated +25%#AD3900
Less saturated −25%#8D4320

Channel breakdown

R163
G60
B10
Red163 (63.9%)
Green60 (23.5%)
Blue10 (3.9%)
Hue19.61°
Saturation (HSL)88.44%
Lightness33.92%
Dominant channelRed
Hex per channelR A3 · G 3C · B 0A

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Every value on this page was computed from “a33c0a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.