Recognised as Colour

#FEC311

#FEC311
Yellow
Light
Nearest: Gold

#FEC311 is a yellow with RGB values 254, 195, 17 and HSL 45°, 99%, 53%. It is a light colour, so black text on it reaches 13:1 contrast (AAA for normal text). The nearest named colour is Gold.

Colour values

#FEC311#FEC311

HEX#FEC311

RGBrgb(254, 195, 17)

RGB (0–1)0.9961, 0.7647, 0.0667

RGB percentages99.6%, 76.5%, 6.7%

HSLhsl(45.1, 99.2%, 53.1%)

HSV / HSBhsv(45.1, 93.3%, 99.6%)

CMYK0%, 23.2%, 93.3%, 0.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,696,081

CSS custom property--colour: #FEC311;

Brightness & contrast

Relative luminance0.60142WCAG 2.x, 0 is black and 1 is white

Perceived brightness204.1 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 13.03:1

Contrast with white1.61:1WCAG normal text: Fail

Contrast with black13.03:1WCAG normal text: AAA

Greyscale equivalent#C3C3C3

Inverted#013CEE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#DDC300no red cones; affects about 1% of men; ΔE 14.9 from the original

Deuteranopia#EBD223no green cones; the most common form, about 1% of men; ΔE 15.8 from the original

Tritanopia#FFAFA6no blue cones; rare, and affects men and women equally; ΔE 68.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.61:1WCAG large text: Fail

Contrast with black, large text13.03:1WCAG large text: AAA

Named colours

Gold · ΔE 12.3 Goldenrod · ΔE 17.2 Orange · ΔE 17.6 Dark goldenrod · ΔE 29.7 Dark orange · ΔE 32 Yellow · ΔE 35.6

Nearest named CSS colourGold (#FFD700)ΔE 12.33, a distinctly different colour

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#114CFE

Analogous#FE4C11, #C3FE11

Triadic#11FEC3, #C311FE

Split complementary#11C2FE, #4D11FE

Tetradic#11FE4D, #114CFE, #FE11C2

Tints, shades & saturation

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

Lighter +40%#FFF6DC

Lighter +30%#FFE9A9

Lighter +20%#FEDD77

Lighter +10%#FED044

Darker −10%#DBA501

Darker −20%#A87F01

Darker −30%#765800

Darker −40%#433200

More saturated +25%#FFC410

Less saturated −25%#E0B42F

Channel breakdown

R254

G195

B17

Red254 (99.6%)

Green195 (76.5%)

Blue17 (6.7%)

Hue45.06°

Saturation (HSL)99.16%

Lightness53.14%

Dominant channelRed

Hex per channelR FE · G C3 · B 11

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FeC311 (chemical formula)

Formula
3,791.266 g/mol
312 atoms

FeC311 has a molar mass of 3,791.266 g/mol, made up of 312 atoms across 2 elements: 1 × Fe, 311 × C.

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Molar mass

Molar mass3,791.266 g/mol

Total atoms per molecule312

Distinct elements2

Mass of one molecule6.2955453 × 10^-21 g

Molecules per gram1.5884248 × 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

Fe1.5%

C98.5%

Iron (Fe)55.845 g/mol, 1.473%

Carbon (C × 311)3,735.421 g/mol, 98.527%

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Elements in this formula

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