Recognised as Colour

#BF4000

#BF4000
Orange
Dark
Nearest: Chocolate

#BF4000 is a orange with RGB values 191, 64, 0 and HSL 20°, 100%, 37%. It is a dark colour, so white text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Chocolate.

Colour values

#BF4000#BF4000

HEX#BF4000

RGBrgb(191, 64, 0)

RGB (0–1)0.749, 0.251, 0

RGB percentages74.9%, 25.1%, 0%

HSLhsl(20.1, 100%, 37.5%)

HSV / HSBhsv(20.1, 100%, 74.9%)

CMYK0%, 66.5%, 100%, 25.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,533,760

CSS custom property--colour: #BF4000;

Brightness & contrast

Relative luminance0.14743WCAG 2.x, 0 is black and 1 is white

Perceived brightness115.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.32:1

Contrast with white5.32:1WCAG normal text: AA

Contrast with black3.95:1WCAG normal text: Fail

Greyscale equivalent#565656

Inverted#40BFFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#665900no red cones; affects about 1% of men; ΔE 54.1 from the original

Deuteranopia#857600no green cones; the most common form, about 1% of men; ΔE 54.1 from the original

Tritanopia#D31437no blue cones; rare, and affects men and women equally; ΔE 29.9 from the original

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

Contrast with white, large text5.32:1WCAG large text: AAA

Contrast with black, large text3.95:1WCAG large text: AA

Named colours

Chocolate · ΔE 15.9 Firebrick · ΔE 21 Tomato · ΔE 21.6 Dark red · ΔE 23 Coral · ΔE 24 Orange red · ΔE 25.8

Nearest named CSS colourChocolate (#D2691E)ΔE 15.94, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#007FBF

Analogous#BF0020, #BF9F00

Triadic#00BF40, #4000BF

Split complementary#00BF9F, #0020BF

Tetradic#20BF00, #007FBF, #9F00BF

Tints, shades & saturation

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

Lighter +40%#FFB38C

Lighter +30%#FF9159

Lighter +20%#FF6F26

Lighter +10%#F25100

Darker −10%#8C2F00

Darker −20%#591E00

Darker −30%#260D00

Darker −40%#000000

More saturated +25%#BF4000

Less saturated −25%#A74818

Channel breakdown

R191

G64

Red191 (74.9%)

Green64 (25.1%)

Blue0 (0%)

Hue20.1°

Saturation (HSL)100%

Lightness37.45%

Dominant channelRed

Hex per channelR BF · G 40 · B 00

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BF4000 (chemical formula)

Formula
76,002.81 g/mol
4001 atoms

BF4000 has a molar mass of 76,002.81 g/mol, made up of 4001 atoms across 2 elements: 1 × B, 4000 × F.

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Molar mass

Molar mass76,002.81 g/mol

Total atoms per molecule4001

Distinct elements2

Mass of one molecule1.2620564 × 10^-19 g

Molecules per gram7.9235765 × 10^18

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%

F100%

Boron (B)10.81 g/mol, 0.014%

Fluorine (F × 4000)75,992 g/mol, 99.986%

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