Recognised as Colour

#C66C19

#C66C19
Orange
Dark
Nearest: Chocolate

#C66C19 is a orange with RGB values 198, 108, 25 and HSL 29°, 78%, 44%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Chocolate.

Colour values

#C66C19#C66C19

HEX#C66C19

RGBrgb(198, 108, 25)

RGB (0–1)0.7765, 0.4235, 0.098

RGB percentages77.6%, 42.4%, 9.8%

HSLhsl(28.8, 77.6%, 43.7%)

HSV / HSBhsv(28.8, 87.4%, 77.6%)

CMYK0%, 45.5%, 87.4%, 22.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,003,801

CSS custom property--colour: #C66C19;

Brightness & contrast

Relative luminance0.22801WCAG 2.x, 0 is black and 1 is white

Perceived brightness136.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.56:1

Contrast with white3.78:1WCAG normal text: Fail

Contrast with black5.56:1WCAG normal text: AA

Greyscale equivalent#797979

Inverted#3993E6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#877703no red cones; affects about 1% of men; ΔE 35.5 from the original

Deuteranopia#9C8B18no green cones; the most common form, about 1% of men; ΔE 36 from the original

Tritanopia#D9585Dno blue cones; rare, and affects men and women equally; ΔE 39.2 from the original

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

Contrast with white, large text3.78:1WCAG large text: AA

Contrast with black, large text5.56:1WCAG large text: AAA

Named colours

Chocolate · ΔE 6.7 Peru · ΔE 14.5 Coral · ΔE 21.5 Dark goldenrod · ΔE 21.9 Sandy brown · ΔE 22.8 Saddle brown · ΔE 23.9

Nearest named CSS colourChocolate (#D2691E)ΔE 6.68, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1973C6

Analogous#C6191C, #C6C319

Triadic#19C66C, #6C19C6

Split complementary#19C6C3, #191CC6

Tetradic#1CC619, #1973C6, #C319C6

Tints, shades & saturation

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

Lighter +40%#F6D4B5

Lighter +30%#F0BA88

Lighter +20%#EAA05B

Lighter +10%#E5852D

Darker −10%#995313

Darker −20%#6B3B0E

Darker −30%#3E2208

Darker −40%#110902

More saturated +25%#DF6B00

Less saturated −25%#AA6D35

Channel breakdown

R198

G108

B25

Red198 (77.6%)

Green108 (42.4%)

Blue25 (9.8%)

Hue28.79°

Saturation (HSL)77.58%

Lightness43.73%

Dominant channelRed

Hex per channelR C6 · G 6C · B 19

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C66C19 (chemical formula)

Formula
1,020.935 g/mol
85 atoms

C66C19 has a molar mass of 1,020.935 g/mol, made up of 85 atoms across 1 element: 85 × C.

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Molar mass

Molar mass1,020.935 g/mol

Total atoms per molecule85

Distinct elements1

Mass of one molecule1.6953025 × 10^-21 g

Molecules per gram5.8986525 × 10^20

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 × 85)1,020.935 g/mol, 100%

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Elements in this formula

Carbon

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