Recognised as Colour

#FEFC19

#FEFC19
Yellow
Light
Nearest: Yellow

#FEFC19 is a yellow with RGB values 254, 252, 25 and HSL 59°, 99%, 55%. It is a light colour, so black text on it reaches 19.2:1 contrast (AAA for normal text). The nearest named colour is Yellow.

Colour values

#FEFC19#FEFC19

HEX#FEFC19

RGBrgb(254, 252, 25)

RGB (0–1)0.9961, 0.9882, 0.098

RGB percentages99.6%, 98.8%, 9.8%

HSLhsl(59.5, 99.1%, 54.7%)

HSV / HSBhsv(59.5, 90.2%, 99.6%)

CMYK0%, 0.8%, 90.2%, 0.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,710,681

CSS custom property--colour: #FEFC19;

Brightness & contrast

Relative luminance0.90762WCAG 2.x, 0 is black and 1 is white

Perceived brightness238 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 19.15:1

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

Contrast with black19.15:1WCAG normal text: AAA

Greyscale equivalent#ECECEC

Inverted#0103E6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#FFF100no red cones; affects about 1% of men; ΔE 6.1 from the original

Deuteranopia#FFF738no green cones; the most common form, about 1% of men; ΔE 8.1 from the original

Tritanopia#FFEBD7no 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 text1.1:1WCAG large text: Fail

Contrast with black, large text19.15:1WCAG large text: AAA

Named colours

Yellow · ΔE 3.2 Gold · ΔE 21.1 Green yellow · ΔE 33.9 Yellow green · ΔE 36.5 Goldenrod · ΔE 44.8 Khaki · ΔE 48.4

Nearest named CSS colourYellow (#FFFF00)ΔE 3.2, a close match

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#191BFE

Analogous#FE8A19, #8DFE19

Triadic#19FEFC, #FC19FE

Split complementary#198DFE, #8A19FE

Tetradic#19FE8A, #191BFE, #FE198D

Tints, shades & saturation

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

Lighter +40%#FFFFE4

Lighter +30%#FFFEB1

Lighter +20%#FEFD7F

Lighter +10%#FEFD4C

Darker −10%#E3E101

Darker −20%#B0AF01

Darker −30%#7D7C01

Darker −40%#4B4A00

More saturated +25%#FFFD18

Less saturated −25%#E1E036

Channel breakdown

R254

G252

B25

Red254 (99.6%)

Green252 (98.8%)

Blue25 (9.8%)

Hue59.48°

Saturation (HSL)99.13%

Lightness54.71%

Dominant channelRed

Hex per channelR FE · G FC · B 19

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FeFC19 (chemical formula)

Formula
303.052 g/mol
21 atoms

FeFC19 has a molar mass of 303.052 g/mol, made up of 21 atoms across 3 elements: 1 × Fe, 1 × F, 19 × C.

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Molar mass

Molar mass303.052 g/mol

Total atoms per molecule21

Distinct elements3

Mass of one molecule5.0322969 × 10^-22 g

Molecules per gram1.9871642 × 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

Fe18.4%

F6.3%

C75.3%

Iron (Fe)55.845 g/mol, 18.428%

Fluorine (F)18.998 g/mol, 6.269%

Carbon (C × 19)228.209 g/mol, 75.304%

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