Recognised as Colour

#C66FE4

#C66FE4
Violet
Dark
Nearest: Medium orchid

#C66FE4 is a violet with RGB values 198, 111, 228 and HSL 285°, 68%, 66%. It is a dark colour, so black text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Medium orchid.

Colour values

#C66FE4#C66FE4

HEX#C66FE4

RGBrgb(198, 111, 228)

RGB (0–1)0.7765, 0.4353, 0.8941

RGB percentages77.6%, 43.5%, 89.4%

HSLhsl(284.6, 68.4%, 66.5%)

HSV / HSBhsv(284.6, 51.3%, 89.4%)

CMYK13.2%, 51.3%, 0%, 10.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,004,772

CSS custom property--colour: #C66FE4;

Brightness & contrast

Relative luminance0.28976WCAG 2.x, 0 is black and 1 is white

Perceived brightness157.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.8:1

Contrast with white3.09:1WCAG normal text: Fail

Contrast with black6.8:1WCAG normal text: AA

Greyscale equivalent#8A8A8A

Inverted#39901B

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#578DE8no red cones; affects about 1% of men; ΔE 43.3 from the original

Deuteranopia#7295E1no green cones; the most common form, about 1% of men; ΔE 44.4 from the original

Tritanopia#C5819Fno blue cones; rare, and affects men and women equally; ΔE 46.3 from the original

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

Contrast with white, large text3.09:1WCAG large text: AA

Contrast with black, large text6.8:1WCAG large text: AAA

Named colours

Medium orchid · ΔE 9.6 Orchid · ΔE 11.6 Violet · ΔE 13 Medium purple · ΔE 17.7 Medium slateblue · ΔE 24.6 Dark orchid · ΔE 25.7

Nearest named CSS colourMedium orchid (#BA55D3)ΔE 9.59, clearly different but related

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#8DE46F

Analogous#8C6FE4, #E46FC8

Triadic#E4C66F, #6FE4C6

Split complementary#C7E46F, #6FE48C

Tetradic#E48C6F, #8DE46F, #6FC7E4

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#F9F0FC

Lighter +20%#E8C5F4

Lighter +10%#D79AEC

Darker −10%#B544DC

Darker −20%#9E25C8

Darker −30%#7C1D9D

Darker −40%#5A1572

More saturated +25%#D05AF9

Less saturated −25%#BC84CF

Channel breakdown

R198

G111

B228

Red198 (77.6%)

Green111 (43.5%)

Blue228 (89.4%)

Hue284.62°

Saturation (HSL)68.42%

Lightness66.47%

Dominant channelBlue

Hex per channelR C6 · G 6F · B E4

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C66Fe4 (chemical formula)

Formula
1,016.106 g/mol
70 atoms

C66Fe4 has a molar mass of 1,016.106 g/mol, made up of 70 atoms across 2 elements: 66 × C, 4 × Fe.

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Molar mass

Molar mass1,016.106 g/mol

Total atoms per molecule70

Distinct elements2

Mass of one molecule1.6872837 × 10^-21 g

Molecules per gram5.9266856 × 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

C78%

Fe22%

Carbon (C × 66)792.726 g/mol, 78.016%

Iron (Fe × 4)223.38 g/mol, 21.984%

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Elements in this formula

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