Recognised as Colour

#B13900

#B13900
Orange
Dark
Nearest: Chocolate

#B13900 is a orange with RGB values 177, 57, 0 and HSL 19°, 100%, 35%. It is a dark colour, so white text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Chocolate.

Colour values

#B13900#B13900

HEX#B13900

RGBrgb(177, 57, 0)

RGB (0–1)0.6941, 0.2235, 0

RGB percentages69.4%, 22.4%, 0%

HSLhsl(19.3, 100%, 34.7%)

HSV / HSBhsv(19.3, 100%, 69.4%)

CMYK0%, 67.8%, 100%, 30.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,614,464

CSS custom property--colour: #B13900;

Brightness & contrast

Relative luminance0.12273WCAG 2.x, 0 is black and 1 is white

Perceived brightness106.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.08:1

Contrast with white6.08:1WCAG normal text: AA

Contrast with black3.45:1WCAG normal text: Fail

Greyscale equivalent#4E4E4E

Inverted#4EC6FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5D5100no red cones; affects about 1% of men; ΔE 51.8 from the original

Deuteranopia#7B6C00no green cones; the most common form, about 1% of men; ΔE 51.3 from the original

Tritanopia#C30C31no blue cones; rare, and affects men and women equally; ΔE 27.8 from the original

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

Contrast with white, large text6.08:1WCAG large text: AAA

Contrast with black, large text3.45:1WCAG large text: AA

Named colours

Chocolate · ΔE 17.7 Firebrick · ΔE 18.2 Dark red · ΔE 18.5 Maroon · ΔE 22.2 Brown · ΔE 23.2 Saddle brown · ΔE 24.2

Nearest named CSS colourChocolate (#D2691E)ΔE 17.73, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0078B1

Analogous#B1001F, #B19200

Triadic#00B139, #3900B1

Split complementary#00B192, #001FB1

Tetradic#1FB100, #0078B1, #9200B1

Tints, shades & saturation

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

Lighter +40%#FFA87E

Lighter +30%#FF854B

Lighter +20%#FF6218

Lighter +10%#E44900

Darker −10%#7E2900

Darker −20%#4B1800

Darker −30%#180800

Darker −40%#000000

More saturated +25%#B13900

Less saturated −25%#9B4116

Channel breakdown

R177

G57

Red177 (69.4%)

Green57 (22.4%)

Blue0 (0%)

Hue19.32°

Saturation (HSL)100%

Lightness34.71%

Dominant channelRed

Hex per channelR B1 · G 39 · B 00

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B13900 (chemical formula)

Formula
150,259 g/mol
13900 atoms

B13900 has a molar mass of 150,259 g/mol, made up of 13900 atoms across 1 element: 13900 × B.

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Molar mass

Molar mass150,259 g/mol

Total atoms per molecule13900

Distinct elements1

Mass of one molecule2.4951094 × 10^-19 g

Molecules per gram4.0078403 × 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

B100%

Boron (B × 13900)150,259 g/mol, 100%

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Elements in this formula

Boron

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