Recognised as Colour

#C18900

#C18900
Orange
Dark
Nearest: Dark goldenrod

#C18900 is a orange with RGB values 193, 137, 0 and HSL 43°, 100%, 38%. It is a dark colour, so black text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Dark goldenrod.

Colour values

#C18900#C18900

HEX#C18900

RGBrgb(193, 137, 0)

RGB (0–1)0.7569, 0.5373, 0

RGB percentages75.7%, 53.7%, 0%

HSLhsl(42.6, 100%, 37.8%)

HSV / HSBhsv(42.6, 100%, 75.7%)

CMYK0%, 29%, 100%, 24.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,683,520

CSS custom property--colour: #C18900;

Brightness & contrast

Relative luminance0.29229WCAG 2.x, 0 is black and 1 is white

Perceived brightness148.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.85:1

Contrast with white3.07:1WCAG normal text: Fail

Contrast with black6.85:1WCAG normal text: AA

Greyscale equivalent#8B8B8B

Inverted#3E76FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#9F8B00no red cones; affects about 1% of men; ΔE 17.3 from the original

Deuteranopia#AC990Eno green cones; the most common form, about 1% of men; ΔE 18.2 from the original

Tritanopia#D37974no blue cones; rare, and affects men and women equally; ΔE 53 from the original

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

Contrast with white, large text3.07:1WCAG large text: AA

Contrast with black, large text6.85:1WCAG large text: AAA

Named colours

Dark goldenrod · ΔE 4.5 Goldenrod · ΔE 10.8 Peru · ΔE 20.5 Orange · ΔE 22.3 Sandy brown · ΔE 25.7 Chocolate · ΔE 27.1

Nearest named CSS colourDark goldenrod (#B8860B)ΔE 4.48, a close match

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0038C1

Analogous#C12800, #99C100

Triadic#00C189, #8900C1

Split complementary#0098C1, #2900C1

Tetradic#00C128, #0038C1, #C10098

Tints, shades & saturation

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

Lighter +40%#FFDE8E

Lighter +30%#FFCF5B

Lighter +20%#FFC128

Lighter +10%#F4AD00

Darker −10%#8E6500

Darker −20%#5B4100

Darker −30%#281C00

Darker −40%#000000

More saturated +25%#C18900

Less saturated −25%#A97F18

Channel breakdown

R193

G137

Red193 (75.7%)

Green137 (53.7%)

Blue0 (0%)

Hue42.59°

Saturation (HSL)100%

Lightness37.84%

Dominant channelRed

Hex per channelR C1 · G 89 · B 00

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C18900 (chemical formula)

Formula
227,007.9 g/mol
18900 atoms

C18900 has a molar mass of 227,007.9 g/mol, made up of 18900 atoms across 1 element: 18900 × C.

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Molar mass

Molar mass227,007.9 g/mol

Total atoms per molecule18900

Distinct elements1

Mass of one molecule3.7695549 × 10^-19 g

Molecules per gram2.6528331 × 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 × 18900)227,007.9 g/mol, 100%

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Elements in this formula

Carbon

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