Recognised as Colour

#B57FDB

#B57FDB
Violet
Dark
Nearest: Medium purple

#B57FDB is a violet with RGB values 181, 127, 219 and HSL 275°, 56%, 68%. It is a dark colour, so black text on it reaches 7:1 contrast (AAA for normal text). The nearest named colour is Medium purple.

Colour values

#B57FDB#B57FDB

HEX#B57FDB

RGBrgb(181, 127, 219)

RGB (0–1)0.7098, 0.498, 0.8588

RGB percentages71%, 49.8%, 85.9%

HSLhsl(275.2, 56.1%, 67.8%)

HSV / HSBhsv(275.2, 42%, 85.9%)

CMYK17.4%, 42%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,894,747

CSS custom property--colour: #B57FDB;

Brightness & contrast

Relative luminance0.30117WCAG 2.x, 0 is black and 1 is white

Perceived brightness157.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.02:1

Contrast with white2.99:1WCAG normal text: Fail

Contrast with black7.02:1WCAG normal text: AAA

Greyscale equivalent#919191

Inverted#4A8024

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6C93DEno red cones; affects about 1% of men; ΔE 30.4 from the original

Deuteranopia#7996D8no green cones; the most common form, about 1% of men; ΔE 30.8 from the original

Tritanopia#B18DA3no blue cones; rare, and affects men and women equally; ΔE 38.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

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

Contrast with black, large text7.02:1WCAG large text: AAA

Named colours

Medium purple · ΔE 12.9 Orchid · ΔE 18.2 Violet · ΔE 20.4 Plum · ΔE 21.4 Medium orchid · ΔE 24.2 Slate blue · ΔE 24.9

Nearest named CSS colourMedium purple (#9370DB)ΔE 12.9, a distinctly different colour

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#A5DB7F

Analogous#877FDB, #DB7FD3

Triadic#DBB57F, #7FDBB5

Split complementary#D3DB7F, #7FDB87

Tetradic#DB877F, #A5DB7F, #7FD3DB

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FAF6FD

Lighter +20%#E3CFF1

Lighter +10%#CCA7E6

Darker −10%#9E57D0

Darker −20%#8636BE

Darker −30%#6A2A97

Darker −40%#4E1F6F

More saturated +25%#B96BF0

Less saturated −25%#B194C7

Channel breakdown

R181

G127

B219

Red181 (71%)

Green127 (49.8%)

Blue219 (85.9%)

Hue275.22°

Saturation (HSL)56.1%

Lightness67.84%

Dominant channelBlue

Hex per channelR B5 · G 7F · B DB

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B57FDb (chemical formula)

Formula
903.168 g/mol
59 atoms

B57FDb has a molar mass of 903.168 g/mol, made up of 59 atoms across 3 elements: 57 × B, 1 × F, 1 × Db.

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Molar mass

Molar mass903.168 g/mol

Total atoms per molecule59

Distinct elements3

Mass of one molecule1.4997457 × 10^-21 g

Molecules per gram6.6677969 × 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

B68.2%

F2.1%

Db29.7%

Boron (B × 57)616.17 g/mol, 68.223%

Fluorine (F)18.998 g/mol, 2.103%

Dubnium (Db)268 g/mol, 29.673%

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Elements in this formula

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