Recognised as Colour

#B138CA

#B138CA
Violet
Dark
Nearest: Dark orchid

#B138CA is a violet with RGB values 177, 56, 202 and HSL 290°, 58%, 51%. It is a dark colour, so white text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Dark orchid.

Colour values

#B138CA#B138CA

HEX#B138CA

RGBrgb(177, 56, 202)

RGB (0–1)0.6941, 0.2196, 0.7922

RGB percentages69.4%, 22%, 79.2%

HSLhsl(289.7, 57.9%, 50.6%)

HSV / HSBhsv(289.7, 72.3%, 79.2%)

CMYK12.4%, 72.3%, 0%, 20.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,614,410

CSS custom property--colour: #B138CA;

Brightness & contrast

Relative luminance0.1644WCAG 2.x, 0 is black and 1 is white

Perceived brightness125.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.9:1

Contrast with white4.9:1WCAG normal text: AA

Contrast with black4.29:1WCAG normal text: Fail

Greyscale equivalent#5C5C5C

Inverted#4EC735

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0069CEno red cones; affects about 1% of men; ΔE 53.7 from the original

Deuteranopia#4675C7no green cones; the most common form, about 1% of men; ΔE 57.2 from the original

Tritanopia#B2547Eno blue cones; rare, and affects men and women equally; ΔE 52.6 from the original

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

Contrast with white, large text4.9:1WCAG large text: AAA

Contrast with black, large text4.29:1WCAG large text: AA

Named colours

Dark orchid · ΔE 9.3 Medium orchid · ΔE 11.2 Dark magenta · ΔE 20.6 Dark violet · ΔE 21.9 Blue violet · ΔE 23.5 Purple · ΔE 25.1

Nearest named CSS colourDark orchid (#9932CC)ΔE 9.32, clearly different but related

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#51CA38

Analogous#6838CA, #CA389A

Triadic#CAB138, #38CAB1

Split complementary#9ACA38, #38CA68

Tetradic#CA6838, #51CA38, #389ACA

Tints, shades & saturation

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

Lighter +40%#F0D9F5

Lighter +30%#E0B1EA

Lighter +20%#D189DF

Lighter +10%#C160D5

Darker −10%#8F2CA3

Darker −20%#6C217B

Darker −30%#481653

Darker −40%#250B2B

More saturated +25%#C619E9

Less saturated −25%#9C58AB

Channel breakdown

R177

G56

B202

Red177 (69.4%)

Green56 (22%)

Blue202 (79.2%)

Hue289.73°

Saturation (HSL)57.94%

Lightness50.59%

Dominant channelBlue

Hex per channelR B1 · G 38 · B CA

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B138Ca (chemical formula)

Formula
1,531.858 g/mol
139 atoms

B138Ca has a molar mass of 1,531.858 g/mol, made up of 139 atoms across 2 elements: 138 × B, 1 × Ca.

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Molar mass

Molar mass1,531.858 g/mol

Total atoms per molecule139

Distinct elements2

Mass of one molecule2.5437101 × 10^-21 g

Molecules per gram3.9312657 × 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

B97.4%

Ca2.6%

Boron (B × 138)1,491.78 g/mol, 97.384%

Calcium (Ca)40.078 g/mol, 2.616%

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Elements in this formula

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