Recognised as Colour

#C18731

#C18731
Orange
Dark
Nearest: Peru

#C18731 is a orange with RGB values 193, 135, 49 and HSL 36°, 60%, 47%. It is a dark colour, so black text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Peru.

Colour values

#C18731#C18731

HEX#C18731

RGBrgb(193, 135, 49)

RGB (0–1)0.7569, 0.5294, 0.1922

RGB percentages75.7%, 52.9%, 19.2%

HSLhsl(35.8, 59.5%, 47.5%)

HSV / HSBhsv(35.8, 74.6%, 75.7%)

CMYK0%, 30.1%, 74.6%, 24.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,683,057

CSS custom property--colour: #C18731;

Brightness & contrast

Relative luminance0.28887WCAG 2.x, 0 is black and 1 is white

Perceived brightness148.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.78:1

Contrast with white3.1:1WCAG normal text: Fail

Contrast with black6.78:1WCAG normal text: AA

Greyscale equivalent#8D8D8D

Inverted#3E78CE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#9B8A25no red cones; affects about 1% of men; ΔE 19.6 from the original

Deuteranopia#A99834no green cones; the most common form, about 1% of men; ΔE 19.9 from the original

Tritanopia#D27875no blue cones; rare, and affects men and women equally; ΔE 41 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.1:1WCAG large text: AA

Contrast with black, large text6.78:1WCAG large text: AAA

Named colours

Peru · ΔE 8.5 Dark goldenrod · ΔE 11.1 Sandy brown · ΔE 16.9 Goldenrod · ΔE 19.9 Chocolate · ΔE 23.5 Sienna · ΔE 28.3

Nearest named CSS colourPeru (#CD853F)ΔE 8.53, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#316BC1

Analogous#C13F31, #B3C131

Triadic#31C187, #8731C1

Split complementary#31B3C1, #3F31C1

Tetradic#31C13F, #316BC1, #C131B3

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#F2E3CC

Lighter +30%#E8CCA3

Lighter +20%#DDB67B

Lighter +10%#D39F52

Darker −10%#986B27

Darker −20%#704E1C

Darker −30%#473212

Darker −40%#1E1508

More saturated +25%#DF8D13

Less saturated −25%#A3814F

Channel breakdown

R193

G135

B49

Red193 (75.7%)

Green135 (52.9%)

Blue49 (19.2%)

Hue35.83°

Saturation (HSL)59.5%

Lightness47.45%

Dominant channelRed

Hex per channelR C1 · G 87 · B 31

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C18731 (chemical formula)

Formula
224,978.041 g/mol
18731 atoms

C18731 has a molar mass of 224,978.041 g/mol, made up of 18731 atoms across 1 element: 18731 × C.

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Molar mass

Molar mass224,978.041 g/mol

Total atoms per molecule18731

Distinct elements1

Mass of one molecule3.7358483 × 10^-19 g

Molecules per gram2.6767682 × 10^18

Name

NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show

Composition by mass

C100%

Carbon (C × 18731)224,978.041 g/mol, 100%

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Elements in this formula

Carbon

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