Recognised as Colour

#BB81CB

#BB81CB
Violet
Dark
Nearest: Plum

#BB81CB is a violet with RGB values 187, 129, 203 and HSL 287°, 42%, 65%. It is a dark colour, so black text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Plum.

Colour values

#BB81CB#BB81CB

HEX#BB81CB

RGBrgb(187, 129, 203)

RGB (0–1)0.7333, 0.5059, 0.7961

RGB percentages73.3%, 50.6%, 79.6%

HSLhsl(287, 41.6%, 65.1%)

HSV / HSBhsv(287, 36.5%, 79.6%)

CMYK7.9%, 36.5%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,288,459

CSS custom property--colour: #BB81CB;

Brightness & contrast

Relative luminance0.30577WCAG 2.x, 0 is black and 1 is white

Perceived brightness157.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.12:1

Contrast with white2.95:1WCAG normal text: Fail

Contrast with black7.12:1WCAG normal text: AAA

Greyscale equivalent#939393

Inverted#447E34

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7792CEno red cones; affects about 1% of men; ΔE 29.4 from the original

Deuteranopia#8598C9no green cones; the most common form, about 1% of men; ΔE 30.1 from the original

Tritanopia#BC8A9Dno blue cones; rare, and affects men and women equally; ΔE 30 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text2.95:1WCAG large text: Fail

Contrast with black, large text7.12:1WCAG large text: AAA

Named colours

Plum · ΔE 13.8 Orchid · ΔE 20.8 Medium purple · ΔE 21.8 Violet · ΔE 23.7 Medium orchid · ΔE 31.1 Pale violetred · ΔE 31.7

Nearest named CSS colourPlum (#DDA0DD)ΔE 13.76, a distinctly different colour

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#91CB81

Analogous#9681CB, #CB81B6

Triadic#CBBB81, #81CBBB

Split complementary#B6CB81, #81CB96

Tetradic#CB9681, #91CB81, #81B6CB

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#F5EDF8

Lighter +20%#E2C9E9

Lighter +10%#CEA5DA

Darker −10%#A85DBC

Darker −20%#8E43A3

Darker −30%#6F347F

Darker −40%#4F255B

More saturated +25%#C86BE1

Less saturated −25%#AE97B5

Channel breakdown

R187

G129

B203

Red187 (73.3%)

Green129 (50.6%)

Blue203 (79.6%)

Hue287.03°

Saturation (HSL)41.57%

Lightness65.1%

Dominant channelBlue

Hex per channelR BB · G 81 · B CB

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Harmonies

Lighter and darker

Similar named colours

Also reads as

BB81CB (chemical formula)

Formula
909.241 g/mol
84 atoms

BB81CB has a molar mass of 909.241 g/mol, made up of 84 atoms across 2 elements: 83 × B, 1 × C.

Open this reading on its own page →

Molar mass

Molar mass909.241 g/mol

Total atoms per molecule84

Distinct elements2

Mass of one molecule1.5098302 × 10^-21 g

Molecules per gram6.6232613 × 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

B98.7%

C1.3%

Boron (B × 83)897.23 g/mol, 98.679%

Carbon (C)12.011 g/mol, 1.321%

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Elements in this formula

Nerdulate something else

Nothing in mind? Surprise me · today’s page