Recognised as Colour

#B23900

#B23900
Orange
Dark
Nearest: Chocolate

#B23900 is a orange with RGB values 178, 57, 0 and HSL 19°, 100%, 35%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Chocolate.

Colour values

#B23900#B23900

HEX#B23900

RGBrgb(178, 57, 0)

RGB (0–1)0.698, 0.2235, 0

RGB percentages69.8%, 22.4%, 0%

HSLhsl(19.2, 100%, 34.9%)

HSV / HSBhsv(19.2, 100%, 69.8%)

CMYK0%, 68%, 100%, 30.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,680,000

CSS custom property--colour: #B23900;

Brightness & contrast

Relative luminance0.12391WCAG 2.x, 0 is black and 1 is white

Perceived brightness106.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.04:1

Contrast with white6.04:1WCAG normal text: AA

Contrast with black3.48:1WCAG normal text: Fail

Greyscale equivalent#4F4F4F

Inverted#4DC6FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5E5100no red cones; affects about 1% of men; ΔE 51.7 from the original

Deuteranopia#7B6D00no green cones; the most common form, about 1% of men; ΔE 52.2 from the original

Tritanopia#C50A31no 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 text6.04:1WCAG large text: AAA

Contrast with black, large text3.48:1WCAG large text: AA

Named colours

Chocolate · ΔE 17.7 Firebrick · ΔE 18.2 Dark red · ΔE 18.7 Maroon · ΔE 22.4 Brown · ΔE 23.4 Tomato · ΔE 24

Nearest named CSS colourChocolate (#D2691E)ΔE 17.74, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0079B2

Analogous#B20020, #B29200

Triadic#00B239, #3900B2

Split complementary#00B292, #0020B2

Tetradic#20B200, #0079B2, #9200B2

Tints, shades & saturation

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

Lighter +40%#FFA87F

Lighter +30%#FF854C

Lighter +20%#FF6319

Lighter +10%#E54900

Darker −10%#7F2900

Darker −20%#4C1800

Darker −30%#190800

Darker −40%#000000

More saturated +25%#B23900

Less saturated −25%#9C4116

Channel breakdown

R178

G57

Red178 (69.8%)

Green57 (22.4%)

Blue0 (0%)

Hue19.21°

Saturation (HSL)100%

Lightness34.9%

Dominant channelRed

Hex per channelR B2 · G 39 · B 00

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B23900 (chemical formula)

Formula
258,359 g/mol
23900 atoms

B23900 has a molar mass of 258,359 g/mol, made up of 23900 atoms across 1 element: 23900 × B.

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Molar mass

Molar mass258,359 g/mol

Total atoms per molecule23900

Distinct elements1

Mass of one molecule4.2901521 × 10^-19 g

Molecules per gram2.3309197 × 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 × 23900)258,359 g/mol, 100%

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Elements in this formula

Boron

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