Recognised as Colour

#B25839

#B25839
Orange
Dark
Nearest: Sienna

#B25839 is a orange with RGB values 178, 88, 57 and HSL 15°, 51%, 46%. It is a dark colour, so white text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Sienna.

Colour values

#B25839#B25839

HEX#B25839

RGBrgb(178, 88, 57)

RGB (0–1)0.698, 0.3451, 0.2235

RGB percentages69.8%, 34.5%, 22.4%

HSLhsl(15.4, 51.5%, 46.1%)

HSV / HSBhsv(15.4, 68%, 69.8%)

CMYK0%, 50.6%, 68%, 30.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,687,993

CSS custom property--colour: #B25839;

Brightness & contrast

Relative luminance0.1674WCAG 2.x, 0 is black and 1 is white

Perceived brightness120 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.83:1

Contrast with white4.83:1WCAG normal text: AA

Contrast with black4.35:1WCAG normal text: Fail

Greyscale equivalent#696969

Inverted#4DA7C6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#706636no red cones; affects about 1% of men; ΔE 38.1 from the original

Deuteranopia#867937no green cones; the most common form, about 1% of men; ΔE 38.2 from the original

Tritanopia#C34651no blue cones; rare, and affects men and women equally; ΔE 21.4 from the original

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

Contrast with white, large text4.83:1WCAG large text: AAA

Contrast with black, large text4.35:1WCAG large text: AA

Named colours

Sienna · ΔE 6.5 Saddle brown · ΔE 14.5 Indian red · ΔE 17.2 Brown · ΔE 19.1 Salmon · ΔE 22.9 Peru · ΔE 23.1

Nearest named CSS colourSienna (#A0522D)ΔE 6.45, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3993B2

Analogous#B23956, #B29439

Triadic#39B258, #5839B2

Split complementary#39B295, #3956B2

Tetradic#56B239, #3993B2, #9539B2

Tints, shades & saturation

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

Lighter +40%#EED3C9

Lighter +30%#E1B3A3

Lighter +20%#D5937C

Lighter +10%#C97355

Darker −10%#8B452D

Darker −20%#653220

Darker −30%#3E1F14

Darker −40%#170C08

More saturated +25%#CF4A1C

Less saturated −25%#956656

Channel breakdown

R178

G88

B57

Red178 (69.8%)

Green88 (34.5%)

Blue57 (22.4%)

Hue15.37°

Saturation (HSL)51.49%

Lightness46.08%

Dominant channelRed

Hex per channelR B2 · G 58 · B 39

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B25839 (chemical formula)

Formula
279,319.59 g/mol
25839 atoms

B25839 has a molar mass of 279,319.59 g/mol, made up of 25839 atoms across 1 element: 25839 × B.

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Molar mass

Molar mass279,319.59 g/mol

Total atoms per molecule25839

Distinct elements1

Mass of one molecule4.6382109 × 10^-19 g

Molecules per gram2.1560037 × 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 × 25839)279,319.59 g/mol, 100%

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Elements in this formula

Boron

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