Recognised as Colour

#B491CA

#B491CA
Violet
Dark
Nearest: Plum

#B491CA is a violet with RGB values 180, 145, 202 and HSL 277°, 35%, 68%. It is a dark colour, so black text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Plum.

Colour values

#B491CA#B491CA

HEX#B491CA

RGBrgb(180, 145, 202)

RGB (0–1)0.7059, 0.5686, 0.7922

RGB percentages70.6%, 56.9%, 79.2%

HSLhsl(276.8, 35%, 68%)

HSV / HSBhsv(276.8, 28.2%, 79.2%)

CMYK10.9%, 28.2%, 0%, 20.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,833,802

CSS custom property--colour: #B491CA;

Brightness & contrast

Relative luminance0.34218WCAG 2.x, 0 is black and 1 is white

Perceived brightness163.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.84:1

Contrast with white2.68:1WCAG normal text: Fail

Contrast with black7.84:1WCAG normal text: AAA

Greyscale equivalent#9D9D9D

Inverted#4B6E35

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#889CCCno red cones; affects about 1% of men; ΔE 19.5 from the original

Deuteranopia#8F9FC8no green cones; the most common form, about 1% of men; ΔE 20.1 from the original

Tritanopia#B298A5no blue cones; rare, and affects men and women equally; ΔE 24.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text2.68:1WCAG large text: Fail

Contrast with black, large text7.84:1WCAG large text: AAA

Named colours

Plum · ΔE 12.3 Thistle · ΔE 23.8 Cornflower blue · ΔE 28.9 Light steelblue · ΔE 29.8 Medium purple · ΔE 30.5 Light slate grey · ΔE 30.6

Nearest named CSS colourPlum (#DDA0DD)ΔE 12.29, a distinctly different colour

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#A7CA91

Analogous#9891CA, #CA91C3

Triadic#CAB491, #91CAB4

Split complementary#C3CA91, #91CA98

Tetradic#CA9891, #A7CA91, #91C3CA

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FAF8FC

Lighter +20%#E3D6EB

Lighter +10%#CBB3DB

Darker −10%#9D6FB9

Darker −20%#8450A5

Darker −30%#693F83

Darker −40%#4D2E61

More saturated +25%#B97DDE

Less saturated −25%#AFA5B6

Channel breakdown

R180

G145

B202

Red180 (70.6%)

Green145 (56.9%)

Blue202 (79.2%)

Hue276.84°

Saturation (HSL)34.97%

Lightness68.04%

Dominant channelBlue

Hex per channelR B4 · G 91 · B CA

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B491Ca (chemical formula)

Formula
5,347.788 g/mol
492 atoms

B491Ca has a molar mass of 5,347.788 g/mol, made up of 492 atoms across 2 elements: 491 × B, 1 × Ca.

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Molar mass

Molar mass5,347.788 g/mol

Total atoms per molecule492

Distinct elements2

Mass of one molecule8.8802109 × 10^-21 g

Molecules per gram1.1260994 × 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

B99.3%

Ca0.7%

Boron (B × 491)5,307.71 g/mol, 99.251%

Calcium (Ca)40.078 g/mol, 0.749%

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