Recognised as Colour

#FCF559

#FCF559
Yellow
Light
Nearest: Gold

#FCF559 is a yellow with RGB values 252, 245, 89 and HSL 57°, 96%, 67%. It is a light colour, so black text on it reaches 18.3:1 contrast (AAA for normal text). The nearest named colour is Gold.

Colour values

#FCF559#FCF559

HEX#FCF559

RGBrgb(252, 245, 89)

RGB (0–1)0.9882, 0.9608, 0.349

RGB percentages98.8%, 96.1%, 34.9%

HSLhsl(57.4, 96.4%, 66.9%)

HSV / HSBhsv(57.4, 64.7%, 98.8%)

CMYK0%, 2.8%, 64.7%, 1.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,577,881

CSS custom property--colour: #FCF559;

Brightness & contrast

Relative luminance0.86722WCAG 2.x, 0 is black and 1 is white

Perceived brightness234.8 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 18.34:1

Contrast with white1.14:1WCAG normal text: Fail

Contrast with black18.34:1WCAG normal text: AAA

Greyscale equivalent#EBEBEB

Inverted#030AA6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#FFEC44no red cones; affects about 1% of men; ΔE 7.5 from the original

Deuteranopia#FFF263no green cones; the most common form, about 1% of men; ΔE 5.5 from the original

Tritanopia#FFE6D5no blue cones; rare, and affects men and women equally; ΔE 65.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.14:1WCAG large text: Fail

Contrast with black, large text18.34:1WCAG large text: AAA

Named colours

Gold · ΔE 21.2 Yellow · ΔE 22.5 Khaki · ΔE 29 Yellow green · ΔE 29.5 Goldenrod · ΔE 34.1 Green yellow · ΔE 38.1

Nearest named CSS colourGold (#FFD700)ΔE 21.17, a distinctly different colour

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#5960FC

Analogous#FCA459, #B2FC59

Triadic#59FCF5, #F559FC

Split complementary#59B2FC, #A359FC

Tetradic#59FCA4, #5960FC, #FC59B2

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFFEEF

Lighter +20%#FEFBBD

Lighter +10%#FDF88B

Darker −10%#FBF227

Darker −20%#EBE104

Darker −30%#B9B103

Darker −40%#878102

More saturated +25%#FFF856

Less saturated −25%#E7E26E

Channel breakdown

R252

G245

B89

Red252 (98.8%)

Green245 (96.1%)

Blue89 (34.9%)

Hue57.42°

Saturation (HSL)96.45%

Lightness66.86%

Dominant channelRed

Hex per channelR FC · G F5 · B 59

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FCF559 (chemical formula)

Formula
10,650.891 g/mol
561 atoms

FCF559 has a molar mass of 10,650.891 g/mol, made up of 561 atoms across 2 elements: 560 × F, 1 × C.

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Molar mass

Molar mass10,650.891 g/mol

Total atoms per molecule561

Distinct elements2

Mass of one molecule1.7686221 × 10^-20 g

Molecules per gram5.6541192 × 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

F99.9%

C0.1%

Fluorine (F × 560)10,638.88 g/mol, 99.887%

Carbon (C)12.011 g/mol, 0.113%

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