Recognised as Colour

#B81200

#B81200
Red
Dark
Nearest: Firebrick

#B81200 is a red with RGB values 184, 18, 0 and HSL 6°, 100%, 36%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#B81200#B81200

HEX#B81200

RGBrgb(184, 18, 0)

RGB (0–1)0.7216, 0.0706, 0

RGB percentages72.2%, 7.1%, 0%

HSLhsl(5.9, 100%, 36.1%)

HSV / HSBhsv(5.9, 100%, 72.2%)

CMYK0%, 90.2%, 100%, 27.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,063,232

CSS custom property--colour: #B81200;

Brightness & contrast

Relative luminance0.10623WCAG 2.x, 0 is black and 1 is white

Perceived brightness101.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.72:1

Contrast with white6.72:1WCAG normal text: AA

Contrast with black3.12:1WCAG normal text: Fail

Greyscale equivalent#343434

Inverted#47EDFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#504500no red cones; affects about 1% of men; ΔE 65.6 from the original

Deuteranopia#766800no green cones; the most common form, about 1% of men; ΔE 65.1 from the original

Tritanopia#CC0013no blue cones; rare, and affects men and women equally; ΔE 8.7 from the original

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

Contrast with white, large text6.72:1WCAG large text: AAA

Contrast with black, large text3.12:1WCAG large text: AA

Named colours

Firebrick · ΔE 15.9 Dark red · ΔE 18.5 Crimson · ΔE 23.4 Maroon · ΔE 23.5 Tomato · ΔE 24.3 Brown · ΔE 24.8

Nearest named CSS colourFirebrick (#B22222)ΔE 15.89, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00A6B8

Analogous#B8004A, #B86E00

Triadic#00B812, #1200B8

Split complementary#00B86E, #004AB8

Tetradic#4AB800, #00A6B8, #6E00B8

Tints, shades & saturation

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

Lighter +40%#FF9185

Lighter +30%#FF6352

Lighter +20%#FF351F

Lighter +10%#EB1700

Darker −10%#850D00

Darker −20%#520800

Darker −30%#1F0300

Darker −40%#000000

More saturated +25%#B81200

Less saturated −25%#A12517

Channel breakdown

R184

G18

Red184 (72.2%)

Green18 (7.1%)

Blue0 (0%)

Hue5.87°

Saturation (HSL)100%

Lightness36.08%

Dominant channelRed

Hex per channelR B8 · G 12 · B 00

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B81200 (chemical formula)

Formula
877,772 g/mol
81200 atoms

B81200 has a molar mass of 877,772 g/mol, made up of 81200 atoms across 1 element: 81200 × B.

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Molar mass

Molar mass877,772 g/mol

Total atoms per molecule81200

Distinct elements1

Mass of one molecule1.4575747 × 10^-18 g

Molecules per gram6.8607118 × 10^17

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 × 81200)877,772 g/mol, 100%

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Elements in this formula

Boron

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