Recognised as Colour

#C18917

#C18917
Orange
Dark
Nearest: Dark goldenrod

#C18917 is a orange with RGB values 193, 137, 23 and HSL 40°, 79%, 42%. It is a dark colour, so black text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Dark goldenrod.

Colour values

#C18917#C18917

HEX#C18917

RGBrgb(193, 137, 23)

RGB (0–1)0.7569, 0.5373, 0.0902

RGB percentages75.7%, 53.7%, 9%

HSLhsl(40.2, 78.7%, 42.4%)

HSV / HSBhsv(40.2, 88.1%, 75.7%)

CMYK0%, 29%, 88.1%, 24.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,683,543

CSS custom property--colour: #C18917;

Brightness & contrast

Relative luminance0.29291WCAG 2.x, 0 is black and 1 is white

Perceived brightness149 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.86:1

Contrast with white3.06:1WCAG normal text: Fail

Contrast with black6.86:1WCAG normal text: AA

Greyscale equivalent#8D8D8D

Inverted#3E76E8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#9E8B00no red cones; affects about 1% of men; ΔE 17.7 from the original

Deuteranopia#AB991Eno green cones; the most common form, about 1% of men; ΔE 18.6 from the original

Tritanopia#D37975no blue cones; rare, and affects men and women equally; ΔE 49.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.06:1WCAG large text: AA

Contrast with black, large text6.86:1WCAG large text: AAA

Named colours

Dark goldenrod · ΔE 3.2 Goldenrod · ΔE 12.5 Peru · ΔE 16.7 Sandy brown · ΔE 22.6 Orange · ΔE 24.7 Chocolate · ΔE 25.7

Nearest named CSS colourDark goldenrod (#B8860B)ΔE 3.24, a close match

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#174FC1

Analogous#C13417, #A4C117

Triadic#17C189, #8917C1

Split complementary#17A4C1, #3417C1

Tetradic#17C134, #174FC1, #C117A4

Tints, shades & saturation

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

Lighter +40%#F5DEAF

Lighter +30%#F0CB81

Lighter +20%#EBB953

Lighter +10%#E5A626

Darker −10%#936912

Darker −20%#66480C

Darker −30%#382807

Darker −40%#0B0801

More saturated +25%#D89100

Less saturated −25%#A68032

Channel breakdown

R193

G137

B23

Red193 (75.7%)

Green137 (53.7%)

Blue23 (9%)

Hue40.24°

Saturation (HSL)78.7%

Lightness42.35%

Dominant channelRed

Hex per channelR C1 · G 89 · B 17

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C18917 (chemical formula)

Formula
227,212.087 g/mol
18917 atoms

C18917 has a molar mass of 227,212.087 g/mol, made up of 18917 atoms across 1 element: 18917 × C.

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Molar mass

Molar mass227,212.087 g/mol

Total atoms per molecule18917

Distinct elements1

Mass of one molecule3.7729455 × 10^-19 g

Molecules per gram2.6504491 × 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 × 18917)227,212.087 g/mol, 100%

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Elements in this formula

Carbon

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