Recognised as Colour

#FEF506

#FEF506
Yellow
Light
Nearest: Yellow

#FEF506 is a yellow with RGB values 254, 245, 6 and HSL 58°, 99%, 51%. It is a light colour, so black text on it reaches 18.3:1 contrast (AAA for normal text). The nearest named colour is Yellow.

Colour values

#FEF506#FEF506

HEX#FEF506

RGBrgb(254, 245, 6)

RGB (0–1)0.9961, 0.9608, 0.0235

RGB percentages99.6%, 96.1%, 2.4%

HSLhsl(57.8, 99.2%, 51%)

HSV / HSBhsv(57.8, 97.6%, 99.6%)

CMYK0%, 3.5%, 97.6%, 0.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,708,870

CSS custom property--colour: #FEF506;

Brightness & contrast

Relative luminance0.86389WCAG 2.x, 0 is black and 1 is white

Perceived brightness233.5 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 18.28:1

Contrast with white1.15:1WCAG normal text: Fail

Contrast with black18.28:1WCAG normal text: AAA

Greyscale equivalent#E6E6E6

Inverted#010AF9

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#FFEB00no red cones; affects about 1% of men; ΔE 6 from the original

Deuteranopia#FFF230no green cones; the most common form, about 1% of men; ΔE 7.2 from the original

Tritanopia#FFE4D1no blue cones; rare, and affects men and women equally; ΔE 82.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.15:1WCAG large text: Fail

Contrast with black, large text18.28:1WCAG large text: AAA

Named colours

Yellow · ΔE 5.7 Gold · ΔE 17.7 Green yellow · ΔE 36.9 Yellow green · ΔE 37.5 Goldenrod · ΔE 42 Orange · ΔE 47.3

Nearest named CSS colourYellow (#FFFF00)ΔE 5.69, clearly different but related

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#060FFE

Analogous#FE7906, #8BFE06

Triadic#06FEF5, #F506FE

Split complementary#068BFE, #7906FE

Tetradic#06FE79, #060FFE, #FE068B

Tints, shades & saturation

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

Lighter +40%#FFFDD1

Lighter +30%#FFFB9E

Lighter +20%#FEF96C

Lighter +10%#FEF739

Darker −10%#D0C901

Darker −20%#9D9801

Darker −30%#6B6700

Darker −40%#383600

More saturated +25%#FFF605

Less saturated −25%#DFD825

Channel breakdown

R254

G245

Red254 (99.6%)

Green245 (96.1%)

Blue6 (2.4%)

Hue57.82°

Saturation (HSL)99.2%

Lightness50.98%

Dominant channelRed

Hex per channelR FE · G F5 · B 06

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FeF506 (chemical formula)

Formula
9,668.833 g/mol
507 atoms

FeF506 has a molar mass of 9,668.833 g/mol, made up of 507 atoms across 2 elements: 1 × Fe, 506 × F.

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Molar mass

Molar mass9,668.833 g/mol

Total atoms per molecule507

Distinct elements2

Mass of one molecule1.6055475 × 10^-20 g

Molecules per gram6.228405 × 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

Fe0.6%

F99.4%

Iron (Fe)55.845 g/mol, 0.578%

Fluorine (F × 506)9,612.988 g/mol, 99.422%

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Elements in this formula

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