Recognised as Colour

#F9FF19

#F9FF19
Yellow
Light
Nearest: Yellow

#F9FF19 is a yellow with RGB values 249, 255, 25 and HSL 62°, 100%, 55%. It is a light colour, so black text on it reaches 19.3:1 contrast (AAA for normal text). The nearest named colour is Yellow.

Colour values

#F9FF19#F9FF19

HEX#F9FF19

RGBrgb(249, 255, 25)

RGB (0–1)0.9765, 1, 0.098

RGB percentages97.6%, 100%, 9.8%

HSLhsl(61.6, 100%, 54.9%)

HSV / HSBhsv(61.6, 90.2%, 100%)

CMYK2.4%, 0%, 90.2%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,383,769

CSS custom property--colour: #F9FF19;

Brightness & contrast

Relative luminance0.9173WCAG 2.x, 0 is black and 1 is white

Perceived brightness238.3 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 19.35:1

Contrast with white1.09:1WCAG normal text: Fail

Contrast with black19.35:1WCAG normal text: AAA

Greyscale equivalent#EDEDED

Inverted#0600E6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#FFF300no red cones; affects about 1% of men; ΔE 8.4 from the original

Deuteranopia#FFF839no green cones; the most common form, about 1% of men; ΔE 9.9 from the original

Tritanopia#FFEEDAno blue cones; rare, and affects men and women equally; ΔE 84.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.09:1WCAG large text: Fail

Contrast with black, large text19.35:1WCAG large text: AAA

Named colours

Yellow · ΔE 3.5 Gold · ΔE 24.4 Green yellow · ΔE 30.7 Yellow green · ΔE 35.3 Chartreuse · ΔE 45.2 Lawn green · ΔE 45.3

Nearest named CSS colourYellow (#FFFF00)ΔE 3.51, a close match

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1F19FF

Analogous#FF9219, #86FF19

Triadic#19F9FF, #FF19F9

Split complementary#1986FF, #9219FF

Tetradic#19FF92, #1F19FF, #FF1986

Tints, shades & saturation

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

Lighter +40%#FEFFE5

Lighter +30%#FDFFB2

Lighter +20%#FCFF7F

Lighter +10%#FAFF4C

Darker −10%#DFE500

Darker −20%#ADB200

Darker −30%#7C7F00

Darker −40%#4A4C00

More saturated +25%#F9FF19

Less saturated −25%#DEE236

Channel breakdown

R249

G255

B25

Red249 (97.6%)

Green255 (100%)

Blue25 (9.8%)

Hue61.57°

Saturation (HSL)100%

Lightness54.9%

Dominant channelGreen

Hex per channelR F9 · G FF · B 19

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F9FF19 (chemical formula)

Formula
550.942 g/mol
29 atoms

F9FF19 has a molar mass of 550.942 g/mol, made up of 29 atoms across 1 element: 29 × F.

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Molar mass

Molar mass550.942 g/mol

Total atoms per molecule29

Distinct elements1

Mass of one molecule9.1486071 × 10^-22 g

Molecules per gram1.0930626 × 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

F100%

Fluorine (F × 29)550.942 g/mol, 100%

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Elements in this formula

Fluorine

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