Recognised as Colour

#BF561B

#BF561B
Orange
Dark
Nearest: Chocolate

#BF561B is a orange with RGB values 191, 86, 27 and HSL 22°, 75%, 43%. It is a dark colour, so white text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Chocolate.

Colour values

#BF561B#BF561B

HEX#BF561B

RGBrgb(191, 86, 27)

RGB (0–1)0.749, 0.3373, 0.1059

RGB percentages74.9%, 33.7%, 10.6%

HSLhsl(21.6, 75.2%, 42.7%)

HSV / HSBhsv(21.6, 85.9%, 74.9%)

CMYK0%, 55%, 85.9%, 25.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,539,419

CSS custom property--colour: #BF561B;

Brightness & contrast

Relative luminance0.17811WCAG 2.x, 0 is black and 1 is white

Perceived brightness123.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.6:1

Contrast with white4.6:1WCAG normal text: AA

Contrast with black4.56:1WCAG normal text: AA

Greyscale equivalent#686868

Inverted#40A9E4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#746610no red cones; affects about 1% of men; ΔE 43.6 from the original

Deuteranopia#8E7E17no green cones; the most common form, about 1% of men; ΔE 44 from the original

Tritanopia#D23D4Bno blue cones; rare, and affects men and women equally; ΔE 31.4 from the original

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

Contrast with white, large text4.6:1WCAG large text: AAA

Contrast with black, large text4.56:1WCAG large text: AAA

Named colours

Chocolate · ΔE 9 Sienna · ΔE 19.1 Coral · ΔE 19.4 Saddle brown · ΔE 20 Peru · ΔE 21.9 Tomato · ΔE 23.3

Nearest named CSS colourChocolate (#D2691E)ΔE 9.01, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1B84BF

Analogous#BF1B32, #BFA81B

Triadic#1BBF56, #561BBF

Split complementary#1BBFA8, #1B32BF

Tetradic#32BF1B, #1B84BF, #A81BBF

Tints, shades & saturation

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

Lighter +40%#F4CAB2

Lighter +30%#EEAB85

Lighter +20%#E78C59

Lighter +10%#E16D2C

Darker −10%#924215

Darker −20%#662E0E

Darker −30%#391A08

Darker −40%#0C0602

More saturated +25%#DA4E00

Less saturated −25%#A45E36

Channel breakdown

R191

G86

B27

Red191 (74.9%)

Green86 (33.7%)

Blue27 (10.6%)

Hue21.59°

Saturation (HSL)75.23%

Lightness42.75%

Dominant channelRed

Hex per channelR BF · G 56 · B 1B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BF561B (chemical formula)

Formula
10,679.498 g/mol
563 atoms

BF561B has a molar mass of 10,679.498 g/mol, made up of 563 atoms across 2 elements: 2 × B, 561 × F.

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Molar mass

Molar mass10,679.498 g/mol

Total atoms per molecule563

Distinct elements2

Mass of one molecule1.7733724 × 10^-20 g

Molecules per gram5.6389736 × 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, 0.202%

Fluorine (F × 561)10,657.878 g/mol, 99.798%

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Elements in this formula

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