Recognised as Colour

#B4531C

#B4531C
Orange
Dark
Nearest: Chocolate

#B4531C is a orange with RGB values 180, 83, 28 and HSL 22°, 73%, 41%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Chocolate.

Colour values

#B4531C#B4531C

HEX#B4531C

RGBrgb(180, 83, 28)

RGB (0–1)0.7059, 0.3255, 0.1098

RGB percentages70.6%, 32.5%, 11%

HSLhsl(21.7, 73.1%, 40.8%)

HSV / HSBhsv(21.7, 84.4%, 70.6%)

CMYK0%, 53.9%, 84.4%, 29.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,817,756

CSS custom property--colour: #B4531C;

Brightness & contrast

Relative luminance0.15974WCAG 2.x, 0 is black and 1 is white

Perceived brightness117.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.01:1

Contrast with white5.01:1WCAG normal text: AA

Contrast with black4.19:1WCAG normal text: Fail

Greyscale equivalent#646464

Inverted#4BACE3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6F6213no red cones; affects about 1% of men; ΔE 40.7 from the original

Deuteranopia#867819no green cones; the most common form, about 1% of men; ΔE 41.5 from the original

Tritanopia#C63D48no blue cones; rare, and affects men and women equally; ΔE 29.4 from the original

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

Contrast with white, large text5.01:1WCAG large text: AAA

Contrast with black, large text4.19:1WCAG large text: AA

Named colours

Chocolate · ΔE 12.6 Sienna · ΔE 14.5 Saddle brown · ΔE 15.4 Peru · ΔE 21 Coral · ΔE 22.3 Firebrick · ΔE 23.5

Nearest named CSS colourChocolate (#D2691E)ΔE 12.6, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1C7DB4

Analogous#B41C31, #B49F1C

Triadic#1CB453, #531CB4

Split complementary#1CB49F, #1C31B4

Tetradic#31B41C, #1C7DB4, #9F1CB4

Tints, shades & saturation

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

Lighter +40%#F2C4AA

Lighter +30%#EBA57E

Lighter +20%#E48752

Lighter +10%#DD6826

Darker −10%#883F15

Darker −20%#5C2A0E

Darker −30%#301607

Darker −40%#030201

More saturated +25%#CE4C02

Less saturated −25%#9A5A36

Channel breakdown

R180

G83

B28

Red180 (70.6%)

Green83 (32.5%)

Blue28 (11%)

Hue21.71°

Saturation (HSL)73.08%

Lightness40.78%

Dominant channelRed

Hex per channelR B4 · G 53 · B 1C

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B4531C (chemical formula)

Formula
48,992.121 g/mol
4532 atoms

B4531C has a molar mass of 48,992.121 g/mol, made up of 4532 atoms across 2 elements: 4531 × B, 1 × C.

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Molar mass

Molar mass48,992.121 g/mol

Total atoms per molecule4532

Distinct elements2

Mass of one molecule8.1353331 × 10^-20 g

Molecules per gram1.229206 × 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

B100%

C0%

Boron (B × 4531)48,980.11 g/mol, 99.975%

Carbon (C)12.011 g/mol, 0.025%

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