Recognised as Colour

#B54129

#B54129
Red
Dark
Nearest: Brown

#B54129 is a red with RGB values 181, 65, 41 and HSL 10°, 63%, 44%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Brown.

Colour values

#B54129#B54129

HEX#B54129

RGBrgb(181, 65, 41)

RGB (0–1)0.7098, 0.2549, 0.1608

RGB percentages71%, 25.5%, 16.1%

HSLhsl(10.3, 63.1%, 43.5%)

HSV / HSBhsv(10.3, 77.3%, 71%)

CMYK0%, 64.1%, 77.3%, 29%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,878,697

CSS custom property--colour: #B54129;

Brightness & contrast

Relative luminance0.13764WCAG 2.x, 0 is black and 1 is white

Perceived brightness111.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.6:1

Contrast with white5.6:1WCAG normal text: AA

Contrast with black3.75:1WCAG normal text: Fail

Greyscale equivalent#585858

Inverted#4ABED6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#625826no red cones; affects about 1% of men; ΔE 50 from the original

Deuteranopia#7E7125no green cones; the most common form, about 1% of men; ΔE 50.3 from the original

Tritanopia#C7223Cno blue cones; rare, and affects men and women equally; ΔE 20 from the original

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

Contrast with white, large text5.6:1WCAG large text: AAA

Contrast with black, large text3.75:1WCAG large text: AA

Named colours

Brown · ΔE 11.2 Firebrick · ΔE 11.3 Sienna · ΔE 16.8 Dark red · ΔE 16.8 Maroon · ΔE 18.5 Indian red · ΔE 19.3

Nearest named CSS colourBrown (#A52A2A)ΔE 11.22, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#299DB5

Analogous#B52957, #B58729

Triadic#29B541, #4129B5

Split complementary#29B587, #2957B5

Tetradic#57B529, #299DB5, #8729B5

Tints, shades & saturation

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

Lighter +40%#EFC4BB

Lighter +30%#E6A091

Lighter +20%#DD7B67

Lighter +10%#D3573E

Darker −10%#8B3220

Darker −20%#622316

Darker −30%#38140D

Darker −40%#0F0503

More saturated +25%#D12F0D

Less saturated −25%#995345

Channel breakdown

R181

G65

B41

Red181 (71%)

Green65 (25.5%)

Blue41 (16.1%)

Hue10.29°

Saturation (HSL)63.06%

Lightness43.53%

Dominant channelRed

Hex per channelR B5 · G 41 · B 29

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B54129 (chemical formula)

Formula
585,134.49 g/mol
54129 atoms

B54129 has a molar mass of 585,134.49 g/mol, made up of 54129 atoms across 1 element: 54129 × B.

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Molar mass

Molar mass585,134.49 g/mol

Total atoms per molecule54129

Distinct elements1

Mass of one molecule9.7163868 × 10^-19 g

Molecules per gram1.0291892 × 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 × 54129)585,134.49 g/mol, 100%

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Elements in this formula

Boron

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