Recognised as Colour

#C9FF23

#C9FF23
Green
Light
Nearest: Green yellow

#C9FF23 is a green with RGB values 201, 255, 35 and HSL 75°, 100%, 57%. It is a light colour, so black text on it reaches 17.8:1 contrast (AAA for normal text). The nearest named colour is Green yellow.

Colour values

#C9FF23#C9FF23

HEX#C9FF23

RGBrgb(201, 255, 35)

RGB (0–1)0.7882, 1, 0.1373

RGB percentages78.8%, 100%, 13.7%

HSLhsl(74.7, 100%, 56.9%)

HSV / HSBhsv(74.7, 86.3%, 100%)

CMYK21.2%, 0%, 86.3%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,238,051

CSS custom property--colour: #C9FF23;

Brightness & contrast

Relative luminance0.84059WCAG 2.x, 0 is black and 1 is white

Perceived brightness224.5 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 17.81:1

Contrast with white1.18:1WCAG normal text: Fail

Contrast with black17.81:1WCAG normal text: AAA

Greyscale equivalent#E4E4E4

Inverted#3600DC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#FFEE00no red cones; affects about 1% of men; ΔE 29.7 from the original

Deuteranopia#FFEC41no green cones; the most common form, about 1% of men; ΔE 32.3 from the original

Tritanopia#D3F2DAno blue cones; rare, and affects men and women equally; ΔE 83 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.18:1WCAG large text: Fail

Contrast with black, large text17.81:1WCAG large text: AAA

Named colours

Green yellow · ΔE 10.9 Yellow · ΔE 22.9 Lawn green · ΔE 25.7 Chartreuse · ΔE 25.7 Yellow green · ΔE 26.4 Limegreen · ΔE 40.7

Nearest named CSS colourGreen yellow (#ADFF2F)ΔE 10.93, a distinctly different colour

Hue familygreen

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#5923FF

Analogous#FFC723, #5BFF23

Triadic#23C9FF, #FF23C9

Split complementary#235BFF, #C723FF

Tetradic#23FFC7, #5923FF, #FF235B

Tints, shades & saturation

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

Lighter +40%#FBFFEF

Lighter +30%#EFFFBC

Lighter +20%#E2FF89

Lighter +10%#D6FF56

Darker −10%#B4EF00

Darker −20%#8EBC00

Darker −30%#678900

Darker −40%#415600

More saturated +25%#C9FF23

Less saturated −25%#BBE33E

Channel breakdown

R201

G255

B35

Red201 (78.8%)

Green255 (100%)

Blue35 (13.7%)

Hue74.73°

Saturation (HSL)100%

Lightness56.86%

Dominant channelGreen

Hex per channelR C9 · G FF · B 23

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C9FF23 (chemical formula)

Formula
564.051 g/mol
33 atoms

C9FF23 has a molar mass of 564.051 g/mol, made up of 33 atoms across 2 elements: 9 × C, 24 × F.

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Molar mass

Molar mass564.051 g/mol

Total atoms per molecule33

Distinct elements2

Mass of one molecule9.3662872 × 10^-22 g

Molecules per gram1.0676589 × 10^21

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

C19.2%

F80.8%

Carbon (C × 9)108.099 g/mol, 19.165%

Fluorine (F × 24)455.952 g/mol, 80.835%

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