Recognised as Colour

#AC28CB

#AC28CB
Violet
Dark
Nearest: Dark orchid

#AC28CB is a violet with RGB values 172, 40, 203 and HSL 289°, 67%, 48%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Dark orchid.

Colour values

#AC28CB#AC28CB

HEX#AC28CB

RGBrgb(172, 40, 203)

RGB (0–1)0.6745, 0.1569, 0.7961

RGB percentages67.5%, 15.7%, 79.6%

HSLhsl(288.6, 67.1%, 47.6%)

HSV / HSBhsv(288.6, 80.3%, 79.6%)

CMYK15.3%, 80.3%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,282,635

CSS custom property--colour: #AC28CB;

Brightness & contrast

Relative luminance0.146WCAG 2.x, 0 is black and 1 is white

Perceived brightness120.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.36:1

Contrast with white5.36:1WCAG normal text: AA

Contrast with black3.92:1WCAG normal text: Fail

Greyscale equivalent#505050

Inverted#53D734

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0062CFno red cones; affects about 1% of men; ΔE 52.9 from the original

Deuteranopia#336FC8no green cones; the most common form, about 1% of men; ΔE 60.3 from the original

Tritanopia#AB4E7Bno blue cones; rare, and affects men and women equally; ΔE 57.1 from the original

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

Contrast with white, large text5.36:1WCAG large text: AAA

Contrast with black, large text3.92:1WCAG large text: AA

Named colours

Dark orchid · ΔE 7.5 Dark violet · ΔE 15.5 Medium orchid · ΔE 17.7 Blue violet · ΔE 18.4 Dark magenta · ΔE 23.6 Purple · ΔE 28.3

Nearest named CSS colourDark orchid (#9932CC)ΔE 7.49, clearly different but related

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#47CB28

Analogous#5A28CB, #CB2899

Triadic#CBAC28, #28CBAC

Split complementary#98CB28, #28CB5B

Tetradic#CB5B28, #47CB28, #2899CB

Tints, shades & saturation

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

Lighter +40%#EDCAF5

Lighter +30%#DEA0EC

Lighter +20%#CF75E4

Lighter +10%#C04BDB

Darker −10%#8820A0

Darker −20%#641776

Darker −30%#400F4B

Darker −40%#1C0621

More saturated +25%#BF0AE9

Less saturated −25%#9946AD

Channel breakdown

R172

G40

B203

Red172 (67.5%)

Green40 (15.7%)

Blue203 (79.6%)

Hue288.59°

Saturation (HSL)67.08%

Lightness47.65%

Dominant channelBlue

Hex per channelR AC · G 28 · B CB

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ac28CB (chemical formula)

Formula
6,378.821 g/mol
30 atoms

Ac28CB has a molar mass of 6,378.821 g/mol, made up of 30 atoms across 3 elements: 28 × Ac, 1 × C, 1 × B.

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Molar mass

Molar mass6,378.821 g/mol

Total atoms per molecule30

Distinct elements3

Mass of one molecule1.0592281 × 10^-20 g

Molecules per gram9.4408367 × 10^19

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

Ac99.6%

C0.2%

B0.2%

Actinium (Ac × 28)6,356 g/mol, 99.642%

Carbon (C)12.011 g/mol, 0.188%

Boron (B)10.81 g/mol, 0.169%

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