Recognised as Colour

#FFF940

#FFF940
Yellow
Light
Nearest: Yellow

#FFF940 is a yellow with RGB values 255, 249, 64 and HSL 58°, 100%, 63%. It is a light colour, so black text on it reaches 18.9:1 contrast (AAA for normal text). The nearest named colour is Yellow.

Colour values

#FFF940#FFF940

HEX#FFF940

RGBrgb(255, 249, 64)

RGB (0–1)1, 0.9765, 0.251

RGB percentages100%, 97.6%, 25.1%

HSLhsl(58.1, 100%, 62.5%)

HSV / HSBhsv(58.1, 74.9%, 100%)

CMYK0%, 2.4%, 74.9%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,775,488

CSS custom property--colour: #FFF940;

Brightness & contrast

Relative luminance0.89382WCAG 2.x, 0 is black and 1 is white

Perceived brightness237.3 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 18.88:1

Contrast with white1.11:1WCAG normal text: Fail

Contrast with black18.88:1WCAG normal text: AAA

Greyscale equivalent#EDEDED

Inverted#0006BF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#FFEF0Eno red cones; affects about 1% of men; ΔE 9 from the original

Deuteranopia#FFF64Fno green cones; the most common form, about 1% of men; ΔE 6 from the original

Tritanopia#FFE9D6no blue cones; rare, and affects men and women equally; ΔE 74.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.11:1WCAG large text: Fail

Contrast with black, large text18.88:1WCAG large text: AAA

Named colours

Yellow · ΔE 12.5 Gold · ΔE 18.4 Yellow green · ΔE 32.4 Green yellow · ΔE 35.2 Goldenrod · ΔE 38.6 Khaki · ΔE 39

Nearest named CSS colourYellow (#FFFF00)ΔE 12.55, a distinctly different colour

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#4046FF

Analogous#FF9940, #A6FF40

Triadic#40FFF9, #F940FF

Split complementary#40A6FF, #9940FF

Tetradic#40FF99, #4046FF, #FF40A6

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFFED9

Lighter +20%#FFFCA6

Lighter +10%#FFFB73

Darker −10%#FFF70D

Darker −20%#D9D200

Darker −30%#A6A100

Darker −40%#736F00

More saturated +25%#FFF940

Less saturated −25%#E7E358

Channel breakdown

R255

G249

B64

Red255 (100%)

Green249 (97.6%)

Blue64 (25.1%)

Hue58.12°

Saturation (HSL)100%

Lightness62.55%

Dominant channelRed

Hex per channelR FF · G F9 · B 40

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FFF940 (chemical formula)

Formula
17,896.116 g/mol
942 atoms

FFF940 has a molar mass of 17,896.116 g/mol, made up of 942 atoms across 1 element: 942 × F.

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Molar mass

Molar mass17,896.116 g/mol

Total atoms per molecule942

Distinct elements1

Mass of one molecule2.97172 × 10^-20 g

Molecules per gram3.3650546 × 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

F100%

Fluorine (F × 942)17,896.116 g/mol, 100%

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Elements in this formula

Fluorine

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