Recognised as Colour

#B21B75

#B21B75
Magenta
Dark
Nearest: Medium violet red

#B21B75 is a magenta with RGB values 178, 27, 117 and HSL 324°, 74%, 40%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Medium violet red.

Colour values

#B21B75#B21B75

HEX#B21B75

RGBrgb(178, 27, 117)

RGB (0–1)0.698, 0.1059, 0.4588

RGB percentages69.8%, 10.6%, 45.9%

HSLhsl(324.2, 73.7%, 40.2%)

HSV / HSBhsv(324.2, 84.8%, 69.8%)

CMYK0%, 84.8%, 34.3%, 30.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,672,437

CSS custom property--colour: #B21B75;

Brightness & contrast

Relative luminance0.11533WCAG 2.x, 0 is black and 1 is white

Perceived brightness107.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.35:1

Contrast with white6.35:1WCAG normal text: AA

Contrast with black3.31:1WCAG normal text: Fail

Greyscale equivalent#424242

Inverted#4DE48A

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#3A4F77no red cones; affects about 1% of men; ΔE 61.2 from the original

Deuteranopia#666972no green cones; the most common form, about 1% of men; ΔE 63.1 from the original

Tritanopia#C00547no blue cones; rare, and affects men and women equally; ΔE 30.1 from the original

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

Contrast with white, large text6.35:1WCAG large text: AAA

Contrast with black, large text3.31:1WCAG large text: AA

Named colours

Medium violet red · ΔE 9.2 Hot pink · ΔE 25.1 Purple · ΔE 26.9 Deep pink · ΔE 27 Dark magenta · ΔE 27.7 Pale violetred · ΔE 29.7

Nearest named CSS colourMedium violet red (#C71585)ΔE 9.19, clearly different but related

Hue familymagenta

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1BB258

Analogous#A41BB2, #B21B29

Triadic#75B21B, #1B75B2

Split complementary#2AB21B, #1BB2A4

Tetradic#B2A31B, #1BB258, #1B29B2

Tints, shades & saturation

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

Lighter +40%#F2A7D4

Lighter +30%#EB7BBE

Lighter +20%#E44FA8

Lighter +10%#DE2292

Darker −10%#861458

Darker −20%#590E3B

Darker −30%#2D071E

Darker −40%#010001

More saturated +25%#CC017A

Less saturated −25%#983570

Channel breakdown

R178

G27

B117

Red178 (69.8%)

Green27 (10.6%)

Blue117 (45.9%)

Hue324.24°

Saturation (HSL)73.66%

Lightness40.2%

Dominant channelRed

Hex per channelR B2 · G 1B · B 75

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B21B75 (chemical formula)

Formula
1,037.76 g/mol
96 atoms

B21B75 has a molar mass of 1,037.76 g/mol, made up of 96 atoms across 1 element: 96 × B.

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Molar mass

Molar mass1,037.76 g/mol

Total atoms per molecule96

Distinct elements1

Mass of one molecule1.723241 × 10^-21 g

Molecules per gram5.8030188 × 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 × 96)1,037.76 g/mol, 100%

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Elements in this formula

Boron

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