Recognised as Colour

#FEDB21

#FEDB21
Yellow
Light
Nearest: Gold

#FEDB21 is a yellow with RGB values 254, 219, 33 and HSL 50°, 99%, 56%. It is a light colour, so black text on it reaches 15.4:1 contrast (AAA for normal text). The nearest named colour is Gold.

Colour values

#FEDB21#FEDB21

HEX#FEDB21

RGBrgb(254, 219, 33)

RGB (0–1)0.9961, 0.8588, 0.1294

RGB percentages99.6%, 85.9%, 12.9%

HSLhsl(50.5, 99.1%, 56.3%)

HSV / HSBhsv(50.5, 87%, 99.6%)

CMYK0%, 13.8%, 87%, 0.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,702,241

CSS custom property--colour: #FEDB21;

Brightness & contrast

Relative luminance0.71844WCAG 2.x, 0 is black and 1 is white

Perceived brightness218.1 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 15.37:1

Contrast with white1.37:1WCAG normal text: Fail

Contrast with black15.37:1WCAG normal text: AAA

Greyscale equivalent#D5D5D5

Inverted#0124DE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#F3D600no red cones; affects about 1% of men; ΔE 3.9 from the original

Deuteranopia#FCE133no green cones; the most common form, about 1% of men; ΔE 4.9 from the original

Tritanopia#FFC9BBno blue cones; rare, and affects men and women equally; ΔE 72.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.37:1WCAG large text: Fail

Contrast with black, large text15.37:1WCAG large text: AAA

Named colours

Gold · ΔE 4.1 Yellow · ΔE 22.6 Goldenrod · ΔE 25.9 Orange · ΔE 31.2 Dark goldenrod · ΔE 38.2 Khaki · ΔE 39.2

Nearest named CSS colourGold (#FFD700)ΔE 4.06, a close match

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2144FE

Analogous#FE6D21, #B2FE21

Triadic#21FEDB, #DB21FE

Split complementary#21B3FE, #6D21FE

Tetradic#21FE6D, #2144FE, #FE21B2

Tints, shades & saturation

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

Lighter +40%#FFFCEC

Lighter +30%#FFF4B9

Lighter +20%#FEEB87

Lighter +10%#FEE354

Darker −10%#EBC601

Darker −20%#B89B01

Darker −30%#857001

Darker −40%#534600

More saturated +25%#FFDC20

Less saturated −25%#E2C83D

Channel breakdown

R254

G219

B33

Red254 (99.6%)

Green219 (85.9%)

Blue33 (12.9%)

Hue50.5°

Saturation (HSL)99.1%

Lightness56.27%

Dominant channelRed

Hex per channelR FE · G DB · B 21

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FeDb21 (chemical formula)

Formula
5,683.845 g/mol
22 atoms

FeDb21 has a molar mass of 5,683.845 g/mol, made up of 22 atoms across 2 elements: 1 × Fe, 21 × Db.

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Molar mass

Molar mass5,683.845 g/mol

Total atoms per molecule22

Distinct elements2

Mass of one molecule9.4382467 × 10^-21 g

Molecules per gram1.0595188 × 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%

Db99%

Iron (Fe)55.845 g/mol, 0.983%

Dubnium (Db × 21)5,628 g/mol, 99.017%

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Elements in this formula

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