Recognised as Colour

#C1631B

#C1631B
Orange
Dark
Nearest: Chocolate

#C1631B is a orange with RGB values 193, 99, 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

#C1631B#C1631B

HEX#C1631B

RGBrgb(193, 99, 27)

RGB (0–1)0.7569, 0.3882, 0.1059

RGB percentages75.7%, 38.8%, 10.6%

HSLhsl(26, 75.5%, 43.1%)

HSV / HSBhsv(26, 86%, 75.7%)

CMYK0%, 48.7%, 86%, 24.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,673,819

CSS custom property--colour: #C1631B;

Brightness & contrast

Relative luminance0.2034WCAG 2.x, 0 is black and 1 is white

Perceived brightness130.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.07:1

Contrast with white4.14:1WCAG normal text: Fail

Contrast with black5.07:1WCAG normal text: AA

Greyscale equivalent#727272

Inverted#3E9CE4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7E6F0Bno red cones; affects about 1% of men; ΔE 38 from the original

Deuteranopia#958519no green cones; the most common form, about 1% of men; ΔE 38.7 from the original

Tritanopia#D44E56no 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 text4.14:1WCAG large text: AA

Contrast with black, large text5.07:1WCAG large text: AAA

Named colours

Chocolate · ΔE 6.2 Peru · ΔE 16.2 Sienna · ΔE 20.3 Coral · ΔE 20.3 Saddle brown · ΔE 20.6 Sandy brown · ΔE 25

Nearest named CSS colourChocolate (#D2691E)ΔE 6.19, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1B79C1

Analogous#C11B26, #C1B61B

Triadic#1BC163, #631BC1

Split complementary#1BC1B6, #1B26C1

Tetradic#26C11B, #1B79C1, #B61BC1

Tints, shades & saturation

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

Lighter +40%#F4D0B4

Lighter +30%#EEB487

Lighter +20%#E8985A

Lighter +10%#E27C2D

Darker −10%#944C15

Darker −20%#68350E

Darker −30%#3B1E08

Darker −40%#0E0702

More saturated +25%#DC5F00

Less saturated −25%#A66736

Channel breakdown

R193

G99

B27

Red193 (75.7%)

Green99 (38.8%)

Blue27 (10.6%)

Hue26.02°

Saturation (HSL)75.45%

Lightness43.14%

Dominant channelRed

Hex per channelR C1 · G 63 · B 1B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C1631B (chemical formula)

Formula
19,600.751 g/mol
1632 atoms

C1631B has a molar mass of 19,600.751 g/mol, made up of 1632 atoms across 2 elements: 1631 × C, 1 × B.

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Molar mass

Molar mass19,600.751 g/mol

Total atoms per molecule1632

Distinct elements2

Mass of one molecule3.2547813 × 10^-20 g

Molecules per gram3.0724031 × 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 × 1631)19,589.941 g/mol, 99.945%

Boron (B)10.81 g/mol, 0.055%

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