Recognised as Colour

#FFFB34

#FFFB34
Yellow
Light
Nearest: Yellow

#FFFB34 is a yellow with RGB values 255, 251, 52 and HSL 59°, 100%, 60%. It is a light colour, so black text on it reaches 19.1:1 contrast (AAA for normal text). The nearest named colour is Yellow.

Colour values

#FFFB34#FFFB34

HEX#FFFB34

RGBrgb(255, 251, 52)

RGB (0–1)1, 0.9843, 0.2039

RGB percentages100%, 98.4%, 20.4%

HSLhsl(58.8, 100%, 60.2%)

HSV / HSBhsv(58.8, 79.6%, 100%)

CMYK0%, 1.6%, 79.6%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,775,988

CSS custom property--colour: #FFFB34;

Brightness & contrast

Relative luminance0.90502WCAG 2.x, 0 is black and 1 is white

Perceived brightness238.2 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 19.1:1

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

Contrast with black19.1:1WCAG normal text: AAA

Greyscale equivalent#EDEDED

Inverted#0004CB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#FFF100no red cones; affects about 1% of men; ΔE 7.3 from the original

Deuteranopia#FFF747no green cones; the most common form, about 1% of men; ΔE 6.9 from the original

Tritanopia#FFEAD7no blue cones; rare, and affects men and women equally; ΔE 78.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

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

Contrast with black, large text19.1:1WCAG large text: AAA

Named colours

Yellow · ΔE 8.6 Gold · ΔE 19.3 Yellow green · ΔE 33.9 Green yellow · ΔE 34.2 Goldenrod · ΔE 41.3 Khaki · ΔE 43

Nearest named CSS colourYellow (#FFFF00)ΔE 8.56, clearly different but related

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3438FF

Analogous#FF9534, #9EFF34

Triadic#34FFFB, #FB34FF

Split complementary#349EFF, #9534FF

Tetradic#34FF95, #3438FF, #FF349E

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFFECD

Lighter +20%#FFFD9A

Lighter +10%#FFFC67

Darker −10%#FFFA01

Darker −20%#CDC900

Darker −30%#9A9700

Darker −40%#676500

More saturated +25%#FFFB34

Less saturated −25%#E6E34D

Channel breakdown

R255

G251

B52

Red255 (100%)

Green251 (98.4%)

Blue52 (20.4%)

Hue58.82°

Saturation (HSL)100%

Lightness60.2%

Dominant channelRed

Hex per channelR FF · G FB · B 34

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FFFB34 (chemical formula)

Formula
424.534 g/mol
37 atoms

FFFB34 has a molar mass of 424.534 g/mol, made up of 37 atoms across 2 elements: 3 × F, 34 × B.

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Molar mass

Molar mass424.534 g/mol

Total atoms per molecule37

Distinct elements2

Mass of one molecule7.0495529 × 10^-22 g

Molecules per gram1.4185297 × 10^21

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

F13.4%

B86.6%

Fluorine (F × 3)56.994 g/mol, 13.425%

Boron (B × 34)367.54 g/mol, 86.575%

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