Recognised as Colour

#FBF227

#FBF227
Yellow
Light
Nearest: Yellow

#FBF227 is a yellow with RGB values 251, 242, 39 and HSL 57°, 96%, 57%. It is a light colour, so black text on it reaches 17.8:1 contrast (AAA for normal text). The nearest named colour is Yellow.

Colour values

#FBF227#FBF227

HEX#FBF227

RGBrgb(251, 242, 39)

RGB (0–1)0.9843, 0.949, 0.1529

RGB percentages98.4%, 94.9%, 15.3%

HSLhsl(57.5, 96.4%, 56.9%)

HSV / HSBhsv(57.5, 84.5%, 98.4%)

CMYK0%, 3.6%, 84.5%, 1.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,511,527

CSS custom property--colour: #FBF227;

Brightness & contrast

Relative luminance0.8416WCAG 2.x, 0 is black and 1 is white

Perceived brightness231.1 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 17.83:1

Contrast with white1.18:1WCAG normal text: Fail

Contrast with black17.83:1WCAG normal text: AAA

Greyscale equivalent#E5E5E5

Inverted#040DD8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#FFE800no red cones; affects about 1% of men; ΔE 7.2 from the original

Deuteranopia#FFF03Dno green cones; the most common form, about 1% of men; ΔE 6.4 from the original

Tritanopia#FFE1CFno blue cones; rare, and affects men and women equally; ΔE 78.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.18:1WCAG large text: Fail

Contrast with black, large text17.83:1WCAG large text: AAA

Named colours

Yellow · ΔE 9.7 Gold · ΔE 16 Yellow green · ΔE 34.2 Green yellow · ΔE 36.4 Goldenrod · ΔE 38.4 Khaki · ΔE 42.8

Nearest named CSS colourYellow (#FFFF00)ΔE 9.74, clearly different but related

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2730FB

Analogous#FB8827, #9AFB27

Triadic#27FBF2, #F227FB

Split complementary#279AFB, #8827FB

Tetradic#27FB88, #2730FB, #FB279A

Tints, shades & saturation

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

Lighter +40%#FFFEEF

Lighter +30%#FEFBBD

Lighter +20%#FDF88B

Lighter +10%#FCF559

Darker −10%#EBE104

Darker −20%#B9B103

Darker −30%#878102

Darker −40%#545102

More saturated +25%#FFF623

Less saturated −25%#DFD943

Channel breakdown

R251

G242

B39

Red251 (98.4%)

Green242 (94.9%)

Blue39 (15.3%)

Hue57.45°

Saturation (HSL)96.36%

Lightness56.86%

Dominant channelRed

Hex per channelR FB · G F2 · B 27

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FBF227 (chemical formula)

Formula
4,342.354 g/mol
229 atoms

FBF227 has a molar mass of 4,342.354 g/mol, made up of 229 atoms across 2 elements: 228 × F, 1 × B.

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Molar mass

Molar mass4,342.354 g/mol

Total atoms per molecule229

Distinct elements2

Mass of one molecule7.2106485 × 10^-21 g

Molecules per gram1.3868378 × 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

F99.8%

B0.2%

Fluorine (F × 228)4,331.544 g/mol, 99.751%

Boron (B)10.81 g/mol, 0.249%

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