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Recognised as Colour

#643D00

  • #643D00
  • Orange
  • Dark
  • Nearest: Saddle brown

#643D00 is a orange with RGB values 100, 61, 0 and HSL 37°, 100%, 20%. It is a dark colour, so white text on it reaches 9.5:1 contrast (AAA for normal text). The nearest named colour is Saddle brown.

Colour values

#643D00#643D00
HEX#643D00
RGBrgb(100, 61, 0)
RGB (0–1)0.3922, 0.2392, 0
RGB percentages39.2%, 23.9%, 0%
HSLhsl(36.6, 100%, 19.6%)
HSV / HSBhsv(36.6, 100%, 39.2%)
CMYK0%, 39%, 100%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,569,216
CSS custom property--colour: #643D00;

Brightness & contrast

Relative luminance0.06047WCAG 2.x, 0 is black and 1 is white
Perceived brightness71.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.51:1
Contrast with white9.51:1WCAG normal text: AAA
Contrast with black2.21:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#9BC2FF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4A4000no red cones; affects about 1% of men; ΔE 15.9 from the original
Deuteranopia#534902no green cones; the most common form, about 1% of men; ΔE 16.1 from the original
Tritanopia#6E3333no blue cones; rare, and affects men and women equally; ΔE 30.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.51:1WCAG large text: AAA
Contrast with black, large text2.21:1WCAG large text: Fail

Named colours

Saddle brown · ΔE 16.1Sienna · ΔE 22.3Peru · ΔE 34.5Dark olivegreen · ΔE 35Maroon · ΔE 35.7Dark goldenrod · ΔE 37.8
Nearest named CSS colourSaddle brown (#8B4513)ΔE 16.06, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#002764
Analogous#640B00, #596400
Triadic#00643D, #3D0064
Split complementary#005964, #0B0064
Tetradic#00640B, #002764, #640059

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFAF31
Lighter +30%#FD9A00
Lighter +20%#CA7B00
Lighter +10%#975C00
Darker −10%#311E00
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#643D00
Less saturated −25%#583A0C

Channel breakdown

R100
G61
B0
Red100 (39.2%)
Green61 (23.9%)
Blue0 (0%)
Hue36.6°
Saturation (HSL)100%
Lightness19.61%
Dominant channelRed
Hex per channelR 64 · G 3D · B 00

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Every value on this page was computed from “643d00” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.