Recognised as Colour

#C1641B

#C1641B
Orange
Dark
Nearest: Chocolate

#C1641B is a orange with RGB values 193, 100, 27 and HSL 26°, 75%, 43%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Chocolate.

Colour values

#C1641B#C1641B

HEX#C1641B

RGBrgb(193, 100, 27)

RGB (0–1)0.7569, 0.3922, 0.1059

RGB percentages75.7%, 39.2%, 10.6%

HSLhsl(26.4, 75.5%, 43.1%)

HSV / HSBhsv(26.4, 86%, 75.7%)

CMYK0%, 48.2%, 86%, 24.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,674,075

CSS custom property--colour: #C1641B;

Brightness & contrast

Relative luminance0.20531WCAG 2.x, 0 is black and 1 is white

Perceived brightness130.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.11:1

Contrast with white4.11:1WCAG normal text: Fail

Contrast with black5.11:1WCAG normal text: AA

Greyscale equivalent#737373

Inverted#3E9BE4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7F700Bno red cones; affects about 1% of men; ΔE 37.5 from the original

Deuteranopia#968519no green cones; the most common form, about 1% of men; ΔE 37.7 from the original

Tritanopia#D44F56no blue cones; rare, and affects men and women equally; ΔE 35.8 from the original

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

Contrast with white, large text4.11:1WCAG large text: AA

Contrast with black, large text5.11:1WCAG large text: AAA

Named colours

Chocolate · ΔE 6.3 Peru · ΔE 15.8 Sienna · ΔE 20.4 Coral · ΔE 20.5 Saddle brown · ΔE 20.7 Sandy brown · ΔE 24.6

Nearest named CSS colourChocolate (#D2691E)ΔE 6.33, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1B78C1

Analogous#C11B25, #C1B71B

Triadic#1BC164, #641BC1

Split complementary#1BC1B7, #1B25C1

Tetradic#25C11B, #1B78C1, #B71BC1

Tints, shades & saturation

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

Lighter +40%#F4D0B4

Lighter +30%#EEB487

Lighter +20%#E8985A

Lighter +10%#E27D2D

Darker −10%#944D15

Darker −20%#68360E

Darker −30%#3B1E08

Darker −40%#0E0702

More saturated +25%#DC6100

Less saturated −25%#A66736

Channel breakdown

R193

G100

B27

Red193 (75.7%)

Green100 (39.2%)

Blue27 (10.6%)

Hue26.39°

Saturation (HSL)75.45%

Lightness43.14%

Dominant channelRed

Hex per channelR C1 · G 64 · B 1B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C1641B (chemical formula)

Formula
19,720.861 g/mol
1642 atoms

C1641B has a molar mass of 19,720.861 g/mol, made up of 1642 atoms across 2 elements: 1641 × C, 1 × B.

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Molar mass

Molar mass19,720.861 g/mol

Total atoms per molecule1642

Distinct elements2

Mass of one molecule3.274726 × 10^-20 g

Molecules per gram3.0536906 × 10^19

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

C99.9%

B0.1%

Carbon (C × 1641)19,710.051 g/mol, 99.945%

Boron (B)10.81 g/mol, 0.055%

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