Recognised as Colour

#FFE911

#FFE911
Yellow
Light
Nearest: Gold

#FFE911 is a yellow with RGB values 255, 233, 17 and HSL 54°, 100%, 53%. It is a light colour, so black text on it reaches 16.9:1 contrast (AAA for normal text). The nearest named colour is Gold.

Colour values

#FFE911#FFE911

HEX#FFE911

RGBrgb(255, 233, 17)

RGB (0–1)1, 0.9137, 0.0667

RGB percentages100%, 91.4%, 6.7%

HSLhsl(54.5, 100%, 53.3%)

HSV / HSBhsv(54.5, 93.3%, 100%)

CMYK0%, 8.6%, 93.3%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,771,345

CSS custom property--colour: #FFE911;

Brightness & contrast

Relative luminance0.79578WCAG 2.x, 0 is black and 1 is white

Perceived brightness226.6 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 16.92:1

Contrast with white1.24:1WCAG normal text: Fail

Contrast with black16.92:1WCAG normal text: AAA

Greyscale equivalent#DEDEDE

Inverted#0016EE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#FFE100no red cones; affects about 1% of men; ΔE 4.3 from the original

Deuteranopia#FFEB2Fno green cones; the most common form, about 1% of men; ΔE 4.9 from the original

Tritanopia#FFD7C7no blue cones; rare, and affects men and women equally; ΔE 79.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.24:1WCAG large text: Fail

Contrast with black, large text16.92:1WCAG large text: AAA

Named colours

Gold · ΔE 10.1 Yellow · ΔE 13.4 Goldenrod · ΔE 34.8 Yellow green · ΔE 38.3 Orange · ΔE 39.7 Green yellow · ΔE 42.3

Nearest named CSS colourGold (#FFD700)ΔE 10.13, a distinctly different colour

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1127FF

Analogous#FF7211, #9EFF11

Triadic#11FFE9, #E911FF

Split complementary#119EFF, #7211FF

Tetradic#11FF72, #1127FF, #FF119E

Tints, shades & saturation

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

Lighter +40%#FFFCDD

Lighter +30%#FFF7AA

Lighter +20%#FFF277

Lighter +10%#FFEE44

Darker −10%#DDC900

Darker −20%#AA9A00

Darker −30%#776C00

Darker −40%#443E00

More saturated +25%#FFE911

Less saturated −25%#E1D12F

Channel breakdown

R255

G233

B17

Red255 (100%)

Green233 (91.4%)

Blue17 (6.7%)

Hue54.45°

Saturation (HSL)100%

Lightness53.33%

Dominant channelRed

Hex per channelR FF · G E9 · B 11

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FFe911 (chemical formula)

Formula
50,893.793 g/mol
912 atoms

FFe911 has a molar mass of 50,893.793 g/mol, made up of 912 atoms across 2 elements: 1 × F, 911 × Fe.

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Molar mass

Molar mass50,893.793 g/mol

Total atoms per molecule912

Distinct elements2

Mass of one molecule8.4511132 × 10^-20 g

Molecules per gram1.1832761 × 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

F0%

Fe100%

Fluorine (F)18.998 g/mol, 0.037%

Iron (Fe × 911)50,874.795 g/mol, 99.963%

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