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Colour

#A33D00

  • #A33D00
  • Orange
  • Dark
  • Nearest: Saddle brown

#A33D00 is a orange with RGB values 163, 61, 0 and HSL 22°, 100%, 32%. 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

#A33D00#A33D00
HEX#A33D00
RGBrgb(163, 61, 0)
RGB (0–1)0.6392, 0.2392, 0
RGB percentages63.9%, 23.9%, 0%
HSLhsl(22.5, 100%, 32%)
HSV / HSBhsv(22.5, 100%, 63.9%)
CMYK0%, 62.6%, 100%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,697,984
CSS custom property--colour: #A33D00;

Brightness & contrast

Relative luminance0.11124WCAG 2.x, 0 is black and 1 is white
Perceived brightness100.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.51:1
Contrast with white6.51:1WCAG normal text: AA
Contrast with black3.22:1WCAG normal text: Fail
Greyscale equivalent#4E4E4E
Inverted#5CC2FF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5B4F00no red cones; affects about 1% of men; ΔE 44.5 from the original
Deuteranopia#746600no green cones; the most common form, about 1% of men; ΔE 44.3 from the original
Tritanopia#B42034no blue cones; rare, and affects men and women equally; ΔE 29.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.51:1WCAG large text: AAA
Contrast with black, large text3.22:1WCAG large text: AA

Named colours

Saddle brown · ΔE 16.9Chocolate · ΔE 17.5Dark red · ΔE 18.7Sienna · ΔE 19Firebrick · ΔE 20.7Maroon · ΔE 20.8
Nearest named CSS colourSaddle brown (#8B4513)ΔE 16.94, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0066A3
Analogous#A30014, #A38F00
Triadic#00A33D, #3D00A3
Split complementary#00A38F, #0014A3
Tetradic#14A300, #0066A3, #8E00A3

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFA670
Lighter +30%#FF863D
Lighter +20%#FF660A
Lighter +10%#D65000
Darker −10%#702A00
Darker −20%#3D1700
Darker −30%#0A0400
Darker −40%#000000
More saturated +25%#A33D00
Less saturated −25%#8F4214

Channel breakdown

R163
G61
B0
Red163 (63.9%)
Green61 (23.9%)
Blue0 (0%)
Hue22.45°
Saturation (HSL)100%
Lightness31.96%
Dominant channelRed
Hex per channelR A3 · G 3D · B 00

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Every value on this page was computed from “a33d00” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.