Recognised as Colour

#B25100

#B25100
Orange
Dark
Nearest: Chocolate

#B25100 is a orange with RGB values 178, 81, 0 and HSL 27°, 100%, 35%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Chocolate.

Colour values

#B25100#B25100

HEX#B25100

RGBrgb(178, 81, 0)

RGB (0–1)0.698, 0.3176, 0

RGB percentages69.8%, 31.8%, 0%

HSLhsl(27.3, 100%, 34.9%)

HSV / HSBhsv(27.3, 100%, 69.8%)

CMYK0%, 54.5%, 100%, 30.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,686,144

CSS custom property--colour: #B25100;

Brightness & contrast

Relative luminance0.1535WCAG 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 5.16:1

Contrast with white5.16:1WCAG normal text: AA

Contrast with black4.07:1WCAG normal text: Fail

Greyscale equivalent#606060

Inverted#4DAEFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6D5F00no red cones; affects about 1% of men; ΔE 40.8 from the original

Deuteranopia#857600no green cones; the most common form, about 1% of men; ΔE 41.2 from the original

Tritanopia#C43A45no blue cones; rare, and affects men and women equally; ΔE 35.5 from the original

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

Contrast with white, large text5.16:1WCAG large text: AAA

Contrast with black, large text4.07:1WCAG large text: AA

Named colours

Chocolate · ΔE 10 Saddle brown · ΔE 19.6 Sienna · ΔE 21.3 Peru · ΔE 22.8 Coral · ΔE 24.6 Dark red · ΔE 27.6

Nearest named CSS colourChocolate (#D2691E)ΔE 9.98, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0061B2

Analogous#B20008, #B2AA00

Triadic#00B251, #5100B2

Split complementary#00B2AA, #0008B2

Tetradic#08B200, #0061B2, #AA00B2

Tints, shades & saturation

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

Lighter +40%#FFB97F

Lighter +30%#FF9D4C

Lighter +20%#FF8219

Lighter +10%#E56800

Darker −10%#7F3A00

Darker −20%#4C2300

Darker −30%#190B00

Darker −40%#000000

More saturated +25%#B25100

Less saturated −25%#9C5316

Channel breakdown

R178

G81

Red178 (69.8%)

Green81 (31.8%)

Blue0 (0%)

Hue27.3°

Saturation (HSL)100%

Lightness34.9%

Dominant channelRed

Hex per channelR B2 · G 51 · B 00

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B25100 (chemical formula)

Formula
271,331 g/mol
25100 atoms

B25100 has a molar mass of 271,331 g/mol, made up of 25100 atoms across 1 element: 25100 × B.

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Molar mass

Molar mass271,331 g/mol

Total atoms per molecule25100

Distinct elements1

Mass of one molecule4.5055573 × 10^-19 g

Molecules per gram2.2194813 × 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 × 25100)271,331 g/mol, 100%

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Elements in this formula

Boron

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