Recognised as Colour

#BF681B

#BF681B
Orange
Dark
Nearest: Chocolate

#BF681B is a orange with RGB values 191, 104, 27 and HSL 28°, 75%, 43%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Chocolate.

Colour values

#BF681B#BF681B

HEX#BF681B

RGBrgb(191, 104, 27)

RGB (0–1)0.749, 0.4078, 0.1059

RGB percentages74.9%, 40.8%, 10.6%

HSLhsl(28.2, 75.2%, 42.7%)

HSV / HSBhsv(28.2, 85.9%, 74.9%)

CMYK0%, 45.5%, 85.9%, 25.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,544,027

CSS custom property--colour: #BF681B;

Brightness & contrast

Relative luminance0.21056WCAG 2.x, 0 is black and 1 is white

Perceived brightness131.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.21:1

Contrast with white4.03:1WCAG normal text: Fail

Contrast with black5.21:1WCAG normal text: AA

Greyscale equivalent#757575

Inverted#4097E4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#827209no red cones; affects about 1% of men; ΔE 34.2 from the original

Deuteranopia#97861Ano green cones; the most common form, about 1% of men; ΔE 34.8 from the original

Tritanopia#D2545Ano blue cones; rare, and affects men and women equally; ΔE 37.7 from the original

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

Contrast with white, large text4.03:1WCAG large text: AA

Contrast with black, large text5.21:1WCAG large text: AAA

Named colours

Chocolate · ΔE 8.3 Peru · ΔE 13.6 Saddle brown · ΔE 20.7 Sienna · ΔE 20.7 Coral · ΔE 22.2 Dark goldenrod · ΔE 22.5

Nearest named CSS colourChocolate (#D2691E)ΔE 8.3, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1B72BF

Analogous#BF1B20, #BFBA1B

Triadic#1BBF68, #681BBF

Split complementary#1BBFBA, #1B20BF

Tetradic#20BF1B, #1B72BF, #BA1BBF

Tints, shades & saturation

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

Lighter +40%#F4D1B2

Lighter +30%#EEB685

Lighter +20%#E79C59

Lighter +10%#E1812C

Darker −10%#925015

Darker −20%#66370E

Darker −30%#391F08

Darker −40%#0C0702

More saturated +25%#DA6600

Less saturated −25%#A46A36

Channel breakdown

R191

G104

B27

Red191 (74.9%)

Green104 (40.8%)

Blue27 (10.6%)

Hue28.17°

Saturation (HSL)75.23%

Lightness42.75%

Dominant channelRed

Hex per channelR BF · G 68 · B 1B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BF681B (chemical formula)

Formula
12,959.258 g/mol
683 atoms

BF681B has a molar mass of 12,959.258 g/mol, made up of 683 atoms across 2 elements: 2 × B, 681 × F.

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Molar mass

Molar mass12,959.258 g/mol

Total atoms per molecule683

Distinct elements2

Mass of one molecule2.1519354 × 10^-20 g

Molecules per gram4.6469796 × 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

B0.2%

F99.8%

Boron (B × 2)21.62 g/mol, 0.167%

Fluorine (F × 681)12,937.638 g/mol, 99.833%

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Elements in this formula

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