Recognised as Colour

#B72250

#B72250
Red
Dark
Nearest: Brown

#B72250 is a red with RGB values 183, 34, 80 and HSL 341°, 69%, 43%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Brown.

Colour values

#B72250#B72250

HEX#B72250

RGBrgb(183, 34, 80)

RGB (0–1)0.7176, 0.1333, 0.3137

RGB percentages71.8%, 13.3%, 31.4%

HSLhsl(341.5, 68.7%, 42.5%)

HSV / HSBhsv(341.5, 81.4%, 71.8%)

CMYK0%, 81.4%, 56.3%, 28.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,001,872

CSS custom property--colour: #B72250;

Brightness & contrast

Relative luminance0.11791WCAG 2.x, 0 is black and 1 is white

Perceived brightness106.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.25:1

Contrast with white6.25:1WCAG normal text: AA

Contrast with black3.36:1WCAG normal text: Fail

Greyscale equivalent#454545

Inverted#48DDAF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4C4D51no red cones; affects about 1% of men; ΔE 61.5 from the original

Deuteranopia#726B4Cno green cones; the most common form, about 1% of men; ΔE 62.7 from the original

Tritanopia#C80037no blue cones; rare, and affects men and women equally; ΔE 19.7 from the original

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

Contrast with white, large text6.25:1WCAG large text: AAA

Contrast with black, large text3.36:1WCAG large text: AA

Named colours

Brown · ΔE 21.5 Indian red · ΔE 22 Crimson · ΔE 25.2 Firebrick · ΔE 26.1 Pale violetred · ΔE 26.8 Medium violet red · ΔE 29.5

Nearest named CSS colourBrown (#A52A2A)ΔE 21.47, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#22B789

Analogous#B7229B, #B73E22

Triadic#50B722, #2250B7

Split complementary#22B73E, #229BB7

Tetradic#9BB722, #22B789, #3E22B7

Tints, shades & saturation

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

Lighter +40%#F1B4C7

Lighter +30%#E989A7

Lighter +20%#E15E86

Lighter +10%#D93366

Darker −10%#8C1A3D

Darker −20%#61122A

Darker −30%#360A18

Darker −40%#0B0205

More saturated +25%#D20746

Less saturated −25%#9C3D5A

Channel breakdown

R183

G34

B80

Red183 (71.8%)

Green34 (13.3%)

Blue80 (31.4%)

Hue341.48°

Saturation (HSL)68.66%

Lightness42.55%

Dominant channelRed

Hex per channelR B7 · G 22 · B 50

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B72250 (chemical formula)

Formula
781,022.5 g/mol
72250 atoms

B72250 has a molar mass of 781,022.5 g/mol, made up of 72250 atoms across 1 element: 72250 × B.

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Molar mass

Molar mass781,022.5 g/mol

Total atoms per molecule72250

Distinct elements1

Mass of one molecule1.2969184 × 10^-18 g

Molecules per gram7.7105855 × 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 × 72250)781,022.5 g/mol, 100%

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Elements in this formula

Boron

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