Recognised as Colour

#FFE11C

#FFE11C
Yellow
Light
Nearest: Gold

#FFE11C is a yellow with RGB values 255, 225, 28 and HSL 52°, 100%, 55%. It is a light colour, so black text on it reaches 16:1 contrast (AAA for normal text). The nearest named colour is Gold.

Colour values

#FFE11C#FFE11C

HEX#FFE11C

RGBrgb(255, 225, 28)

RGB (0–1)1, 0.8824, 0.1098

RGB percentages100%, 88.2%, 11%

HSLhsl(52.1, 100%, 55.5%)

HSV / HSBhsv(52.1, 89%, 100%)

CMYK0%, 11.8%, 89%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,769,308

CSS custom property--colour: #FFE11C;

Brightness & contrast

Relative luminance0.75194WCAG 2.x, 0 is black and 1 is white

Perceived brightness221.9 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 16.04:1

Contrast with white1.31:1WCAG normal text: Fail

Contrast with black16.04:1WCAG normal text: AAA

Greyscale equivalent#D9D9D9

Inverted#001EE3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#F8DB00no red cones; affects about 1% of men; ΔE 2.5 from the original

Deuteranopia#FFE532no green cones; the most common form, about 1% of men; ΔE 4.3 from the original

Tritanopia#FFCFC0no blue cones; rare, and affects men and women equally; ΔE 75.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.31:1WCAG large text: Fail

Contrast with black, large text16.04:1WCAG large text: AAA

Named colours

Gold · ΔE 5.5 Yellow · ΔE 18.8 Goldenrod · ΔE 29.6 Orange · ΔE 34.6 Yellow green · ΔE 39 Khaki · ΔE 41

Nearest named CSS colourGold (#FFD700)ΔE 5.51, clearly different but related

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1C3AFF

Analogous#FF701C, #ACFF1C

Triadic#1CFFE1, #E11CFF

Split complementary#1CACFF, #701CFF

Tetradic#1CFF6F, #1C3AFF, #FF1CAB

Tints, shades & saturation

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

Lighter +40%#FFFCE8

Lighter +30%#FFF5B5

Lighter +20%#FFEE82

Lighter +10%#FFE84F

Darker −10%#E8C900

Darker −20%#B59D00

Darker −30%#827100

Darker −40%#4F4500

More saturated +25%#FFE11C

Less saturated −25%#E3CC38

Channel breakdown

R255

G225

B28

Red255 (100%)

Green225 (88.2%)

Blue28 (11%)

Hue52.07°

Saturation (HSL)100%

Lightness55.49%

Dominant channelRed

Hex per channelR FF · G E1 · B 1C

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FFe11C (chemical formula)

Formula
645.304 g/mol
13 atoms

FFe11C has a molar mass of 645.304 g/mol, made up of 13 atoms across 3 elements: 1 × F, 11 × Fe, 1 × C.

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Molar mass

Molar mass645.304 g/mol

Total atoms per molecule13

Distinct elements3

Mass of one molecule1.0715525 × 10^-21 g

Molecules per gram9.3322539 × 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

F2.9%

Fe95.2%

C1.9%

Fluorine (F)18.998 g/mol, 2.944%

Iron (Fe × 11)614.295 g/mol, 95.195%

Carbon (C)12.011 g/mol, 1.861%

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Elements in this formula

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