Recognised as Colour

#B4482B

#B4482B
Red
Dark
Nearest: Sienna

#B4482B is a red with RGB values 180, 72, 43 and HSL 13°, 61%, 44%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Sienna.

Colour values

#B4482B#B4482B

HEX#B4482B

RGBrgb(180, 72, 43)

RGB (0–1)0.7059, 0.2824, 0.1686

RGB percentages70.6%, 28.2%, 16.9%

HSLhsl(12.7, 61.4%, 43.7%)

HSV / HSBhsv(12.7, 76.1%, 70.6%)

CMYK0%, 60%, 76.1%, 29.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,814,955

CSS custom property--colour: #B4482B;

Brightness & contrast

Relative luminance0.14512WCAG 2.x, 0 is black and 1 is white

Perceived brightness113.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.38:1

Contrast with white5.38:1WCAG normal text: AA

Contrast with black3.9:1WCAG normal text: Fail

Greyscale equivalent#5D5D5D

Inverted#4BB7D4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#665B27no red cones; affects about 1% of men; ΔE 46.2 from the original

Deuteranopia#817328no green cones; the most common form, about 1% of men; ΔE 46.3 from the original

Tritanopia#C62F42no blue cones; rare, and affects men and women equally; ΔE 21.2 from the original

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

Contrast with white, large text5.38:1WCAG large text: AAA

Contrast with black, large text3.9:1WCAG large text: AA

Named colours

Sienna · ΔE 13.4 Brown · ΔE 13.4 Firebrick · ΔE 14.9 Saddle brown · ΔE 17.6 Indian red · ΔE 19 Dark red · ΔE 19.2

Nearest named CSS colourSienna (#A0522D)ΔE 13.38, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2B97B4

Analogous#B42B53, #B48C2B

Triadic#2BB448, #482BB4

Split complementary#2BB48C, #2B53B4

Tetradic#53B42B, #2B97B4, #8C2BB4

Tints, shades & saturation

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

Lighter +40%#EFC7BC

Lighter +30%#E5A493

Lighter +20%#DB826A

Lighter +10%#D15F41

Darker −10%#8B3821

Darker −20%#622717

Darker −30%#39170D

Darker −40%#0F0604

More saturated +25%#D0380F

Less saturated −25%#985847

Channel breakdown

R180

G72

B43

Red180 (70.6%)

Green72 (28.2%)

Blue43 (16.9%)

Hue12.7°

Saturation (HSL)61.43%

Lightness43.73%

Dominant channelRed

Hex per channelR B4 · G 48 · B 2B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B4482B (chemical formula)

Formula
48,461.23 g/mol
4483 atoms

B4482B has a molar mass of 48,461.23 g/mol, made up of 4483 atoms across 1 element: 4483 × B.

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Molar mass

Molar mass48,461.23 g/mol

Total atoms per molecule4483

Distinct elements1

Mass of one molecule8.0471766 × 10^-20 g

Molecules per gram1.2426719 × 10^19

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 × 4483)48,461.23 g/mol, 100%

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Elements in this formula

Boron

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