Recognised as Colour

#B10051

#B10051
Red
Dark
Nearest: Medium violet red

#B10051 is a red with RGB values 177, 0, 81 and HSL 333°, 100%, 35%. It is a dark colour, so white text on it reaches 7:1 contrast (AAA for normal text). The nearest named colour is Medium violet red.

Colour values

#B10051#B10051

HEX#B10051

RGBrgb(177, 0, 81)

RGB (0–1)0.6941, 0, 0.3176

RGB percentages69.4%, 0%, 31.8%

HSLhsl(332.5, 100%, 34.7%)

HSV / HSBhsv(332.5, 100%, 69.4%)

CMYK0%, 100%, 54.2%, 30.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,599,953

CSS custom property--colour: #B10051;

Brightness & contrast

Relative luminance0.09941WCAG 2.x, 0 is black and 1 is white

Perceived brightness100.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.03:1

Contrast with white7.03:1WCAG normal text: AAA

Contrast with black2.99:1WCAG normal text: Fail

Greyscale equivalent#2B2B2B

Inverted#4EFFAE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#3F4452no red cones; affects about 1% of men; ΔE 64.9 from the original

Deuteranopia#6A644Dno green cones; the most common form, about 1% of men; ΔE 66.1 from the original

Tritanopia#C2002Eno blue cones; rare, and affects men and women equally; ΔE 26.9 from the original

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

Contrast with white, large text7.03:1WCAG large text: AAA

Contrast with black, large text2.99:1WCAG large text: Fail

Named colours

Medium violet red · ΔE 24 Brown · ΔE 27.8 Indian red · ΔE 29.1 Crimson · ΔE 29.4 Pale violetred · ΔE 29.9 Deep pink · ΔE 30.2

Nearest named CSS colourMedium violet red (#C71585)ΔE 23.98, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00B160

Analogous#B100A9, #B10800

Triadic#51B100, #0051B1

Split complementary#00B108, #00A9B1

Tetradic#A9B100, #00B160, #0800B1

Tints, shades & saturation

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

Lighter +40%#FF7EB9

Lighter +30%#FF4B9D

Lighter +20%#FF1882

Lighter +10%#E40068

Darker −10%#7E003A

Darker −20%#4B0022

Darker −30%#18000B

Darker −40%#000000

More saturated +25%#B10051

Less saturated −25%#9B1653

Channel breakdown

R177

B81

Red177 (69.4%)

Green0 (0%)

Blue81 (31.8%)

Hue332.54°

Saturation (HSL)100%

Lightness34.71%

Dominant channelRed

Hex per channelR B1 · G 00 · B 51

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B10051 (chemical formula)

Formula
108,651.31 g/mol
10051 atoms

B10051 has a molar mass of 108,651.31 g/mol, made up of 10051 atoms across 1 element: 10051 × B.

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Molar mass

Molar mass108,651.31 g/mol

Total atoms per molecule10051

Distinct elements1

Mass of one molecule1.8041974 × 10^-19 g

Molecules per gram5.5426306 × 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 × 10051)108,651.31 g/mol, 100%

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Elements in this formula

Boron

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