Recognised as Colour

#B51B72

#B51B72
Magenta
Dark
Nearest: Medium violet red

#B51B72 is a magenta with RGB values 181, 27, 114 and HSL 326°, 74%, 41%. It is a dark colour, so white text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Medium violet red.

Colour values

#B51B72#B51B72

HEX#B51B72

RGBrgb(181, 27, 114)

RGB (0–1)0.7098, 0.1059, 0.4471

RGB percentages71%, 10.6%, 44.7%

HSLhsl(326.1, 74%, 40.8%)

HSV / HSBhsv(326.1, 85.1%, 71%)

CMYK0%, 85.1%, 37%, 29%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,869,042

CSS custom property--colour: #B51B72;

Brightness & contrast

Relative luminance0.11823WCAG 2.x, 0 is black and 1 is white

Perceived brightness108.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.24:1

Contrast with white6.24:1WCAG normal text: AA

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

Greyscale equivalent#424242

Inverted#4AE48D

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#3E4F74no red cones; affects about 1% of men; ΔE 61.6 from the original

Deuteranopia#696A6Fno green cones; the most common form, about 1% of men; ΔE 63.6 from the original

Tritanopia#C40046no blue cones; rare, and affects men and women equally; ΔE 29.3 from the original

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

Contrast with white, large text6.24:1WCAG large text: AAA

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

Named colours

Medium violet red · ΔE 9.9 Hot pink · ΔE 24.6 Deep pink · ΔE 25.9 Pale violetred · ΔE 28.6 Purple · ΔE 29.6 Dark magenta · ΔE 30.4

Nearest named CSS colourMedium violet red (#C71585)ΔE 9.88, clearly different but related

Hue familymagenta

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1BB55E

Analogous#AB1BB5, #B51B25

Triadic#72B51B, #1B72B5

Split complementary#25B51B, #1BB5AB

Tetradic#B5AB1B, #1BB55E, #1B25B5

Tints, shades & saturation

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

Lighter +40%#F2AAD3

Lighter +30%#EC7DBC

Lighter +20%#E551A5

Lighter +10%#DE258E

Darker −10%#891456

Darker −20%#5C0E3A

Darker −30%#30071E

Darker −40%#030102

More saturated +25%#CF0175

Less saturated −25%#9B356F

Channel breakdown

R181

G27

B114

Red181 (71%)

Green27 (10.6%)

Blue114 (44.7%)

Hue326.1°

Saturation (HSL)74.04%

Lightness40.78%

Dominant channelRed

Hex per channelR B5 · G 1B · B 72

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B51B72 (chemical formula)

Formula
1,329.63 g/mol
123 atoms

B51B72 has a molar mass of 1,329.63 g/mol, made up of 123 atoms across 1 element: 123 × B.

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Molar mass

Molar mass1,329.63 g/mol

Total atoms per molecule123

Distinct elements1

Mass of one molecule2.2079026 × 10^-21 g

Molecules per gram4.5291854 × 10^20

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 × 123)1,329.63 g/mol, 100%

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Elements in this formula

Boron

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