Recognised as Colour

#CA81DB

#CA81DB
Violet
Dark
Nearest: Orchid

#CA81DB is a violet with RGB values 202, 129, 219 and HSL 289°, 56%, 68%. It is a dark colour, so black text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Orchid.

Colour values

#CA81DB#CA81DB

HEX#CA81DB

RGBrgb(202, 129, 219)

RGB (0–1)0.7922, 0.5059, 0.8588

RGB percentages79.2%, 50.6%, 85.9%

HSLhsl(288.7, 55.6%, 68.2%)

HSV / HSBhsv(288.7, 41.1%, 85.9%)

CMYK7.8%, 41.1%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,271,515

CSS custom property--colour: #CA81DB;

Brightness & contrast

Relative luminance0.33372WCAG 2.x, 0 is black and 1 is white

Perceived brightness165.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.67:1

Contrast with white2.74:1WCAG normal text: Fail

Contrast with black7.67:1WCAG normal text: AAA

Greyscale equivalent#979797

Inverted#357E24

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7497DEno red cones; affects about 1% of men; ΔE 36.3 from the original

Deuteranopia#889FD8no green cones; the most common form, about 1% of men; ΔE 37.2 from the original

Tritanopia#CB8CA4no blue cones; rare, and affects men and women equally; ΔE 35.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text2.74:1WCAG large text: Fail

Contrast with black, large text7.67:1WCAG large text: AAA

Named colours

Orchid · ΔE 12.5 Violet · ΔE 14.6 Plum · ΔE 18.7 Medium purple · ΔE 19 Medium orchid · ΔE 23.2 Slate blue · ΔE 30.7

Nearest named CSS colourOrchid (#DA70D6)ΔE 12.54, a distinctly different colour

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#92DB81

Analogous#9D81DB, #DB81BF

Triadic#DBCA81, #81DBCA

Split complementary#BFDB81, #81DB9D

Tetradic#DB9D81, #92DB81, #81BFDB

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FCF8FD

Lighter +20%#EBD0F2

Lighter +10%#DBA9E6

Darker −10%#B959D0

Darker −20%#A637BF

Darker −30%#832B98

Darker −40%#612070

More saturated +25%#D76DEF

Less saturated −25%#BD95C7

Channel breakdown

R202

G129

B219

Red202 (79.2%)

Green129 (50.6%)

Blue219 (85.9%)

Hue288.67°

Saturation (HSL)55.56%

Lightness68.24%

Dominant channelBlue

Hex per channelR CA · G 81 · B DB

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ca81Db (chemical formula)

Formula
3,514.318 g/mol
82 atoms

Ca81Db has a molar mass of 3,514.318 g/mol, made up of 82 atoms across 2 elements: 81 × Ca, 1 × Db.

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Molar mass

Molar mass3,514.318 g/mol

Total atoms per molecule82

Distinct elements2

Mass of one molecule5.8356623 × 10^-21 g

Molecules per gram1.7136015 × 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

Ca92.4%

Db7.6%

Calcium (Ca × 81)3,246.318 g/mol, 92.374%

Dubnium (Db)268 g/mol, 7.626%

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Elements in this formula

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