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Colour

#391B09

  • #391B09
  • Orange
  • Dark
  • Nearest: Black

#391B09 is a orange with RGB values 57, 27, 9 and HSL 23°, 73%, 13%. It is a dark colour, so white text on it reaches 15.7:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#391B09#391B09
HEX#391B09
RGBrgb(57, 27, 9)
RGB (0–1)0.2235, 0.1059, 0.0353
RGB percentages22.4%, 10.6%, 3.5%
HSLhsl(22.5, 72.7%, 12.9%)
HSV / HSBhsv(22.5, 84.2%, 22.4%)
CMYK0%, 52.6%, 84.2%, 77.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,742,473
CSS custom property--colour: #391B09;

Brightness & contrast

Relative luminance0.01673WCAG 2.x, 0 is black and 1 is white
Perceived brightness37.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.73:1
Contrast with white15.73:1WCAG normal text: AAA
Contrast with black1.33:1WCAG normal text: Fail
Greyscale equivalent#202020
Inverted#C6E4F6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#231F07no red cones; affects about 1% of men; ΔE 15.4 from the original
Deuteranopia#2B2609no green cones; the most common form, about 1% of men; ΔE 15.3 from the original
Tritanopia#3F1517no blue cones; rare, and affects men and women equally; ΔE 10.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.73:1WCAG large text: AAA
Contrast with black, large text1.33:1WCAG large text: Fail

Named colours

Black · ΔE 25.3Saddle brown · ΔE 36.4Dark slate grey · ΔE 36.7Dim grey · ΔE 37.4Sienna · ΔE 39.1Maroon · ΔE 42.6
Nearest named CSS colourBlack (#000000)ΔE 25.32, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#092739
Analogous#39090F, #393309
Triadic#09391B, #1B0939
Split complementary#093933, #090F39
Tetradic#0F3909, #092739, #330939

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DE7130
Lighter +30%#BD5A1E
Lighter +20%#914517
Lighter +10%#653010
Darker −10%#0D0602
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#411901
Less saturated −25%#311D11

Channel breakdown

R57
G27
B9
Red57 (22.4%)
Green27 (10.6%)
Blue9 (3.5%)
Hue22.5°
Saturation (HSL)72.73%
Lightness12.94%
Dominant channelRed
Hex per channelR 39 · G 1B · B 09

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Every value on this page was computed from “391b09” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.