Colour

#C18318

#C18318
Orange
Dark
Nearest: Dark goldenrod

#C18318 is a orange with RGB values 193, 131, 24 and HSL 38°, 78%, 43%. It is a dark colour, so black text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Dark goldenrod.

Colour values

#C18318#C18318

HEX#C18318

RGBrgb(193, 131, 24)

RGB (0–1)0.7569, 0.5137, 0.0941

RGB percentages75.7%, 51.4%, 9.4%

HSLhsl(38, 77.9%, 42.5%)

HSV / HSBhsv(38, 87.6%, 75.7%)

CMYK0%, 32.1%, 87.6%, 24.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,682,008

CSS custom property--colour: #C18318;

Brightness & contrast

Relative luminance0.27636WCAG 2.x, 0 is black and 1 is white

Perceived brightness145.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.53:1

Contrast with white3.22:1WCAG normal text: Fail

Contrast with black6.53:1WCAG normal text: AA

Greyscale equivalent#888888

Inverted#3E7CE7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#998700no red cones; affects about 1% of men; ΔE 21.1 from the original

Deuteranopia#A8951Dno green cones; the most common form, about 1% of men; ΔE 21.1 from the original

Tritanopia#D37370no blue cones; rare, and affects men and women equally; ΔE 47.2 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text3.22:1WCAG large text: AA

Contrast with black, large text6.53:1WCAG large text: AAA

Named colours

Dark goldenrod · ΔE 6.3 Peru · ΔE 14 Goldenrod · ΔE 15.7 Sandy brown · ΔE 21.2 Chocolate · ΔE 21.9 Orange · ΔE 25.3

Nearest named CSS colourDark goldenrod (#B8860B)ΔE 6.3, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1856C1

Analogous#C12E18, #ABC118

Triadic#18C183, #8318C1

Split complementary#18ABC1, #2E18C1

Tetradic#18C12E, #1856C1, #C118AB

Tints, shades & saturation

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

Lighter +40%#F5DCB0

Lighter +30%#F0C882

Lighter +20%#EAB355

Lighter +10%#E49F28

Darker −10%#946412

Darker −20%#66450D

Darker −30%#392707

Darker −40%#0C0801

More saturated +25%#D98900

Less saturated −25%#A67C33

Channel breakdown

R193

G131

B24

Red193 (75.7%)

Green131 (51.4%)

Blue24 (9.4%)

Hue37.99°

Saturation (HSL)77.88%

Lightness42.55%

Dominant channelRed

Hex per channelR C1 · G 83 · B 18

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C18318 (chemical formula)

Formula
220,017.498 g/mol
18318 atoms

C18318 has a molar mass of 220,017.498 g/mol, made up of 18318 atoms across 1 element: 18318 × C.

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Molar mass

Molar mass220,017.498 g/mol

Total atoms per molecule18318

Distinct elements1

Mass of one molecule3.6534765 × 10^-19 g

Molecules per gram2.737119 × 10^18

Composition by mass

C100%

Carbon (C × 18318)220,017.498 g/mol, 100%

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Elements in this formula

Carbon

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