Recognised as Colour

#FBFB1B

#FBFB1B
Yellow
Light
Nearest: Yellow

#FBFB1B is a yellow with RGB values 251, 251, 27 and HSL 60°, 97%, 55%. 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

#FBFB1B#FBFB1B

HEX#FBFB1B

RGBrgb(251, 251, 27)

RGB (0–1)0.9843, 0.9843, 0.1059

RGB percentages98.4%, 98.4%, 10.6%

HSLhsl(60, 96.6%, 54.5%)

HSV / HSBhsv(60, 89.2%, 98.4%)

CMYK0%, 0%, 89.2%, 1.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,513,819

CSS custom property--colour: #FBFB1B;

Brightness & contrast

Relative luminance0.89583WCAG 2.x, 0 is black and 1 is white

Perceived brightness236.4 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 18.92:1

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

Contrast with black18.92:1WCAG normal text: AAA

Greyscale equivalent#EBEBEB

Inverted#0404E4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#FFF000no red cones; affects about 1% of men; ΔE 7.2 from the original

Deuteranopia#FFF639no green cones; the most common form, about 1% of men; ΔE 8.4 from the original

Tritanopia#FFEAD6no blue cones; rare, and affects men and women equally; ΔE 82.5 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 text18.92:1WCAG large text: AAA

Named colours

Yellow · ΔE 3.9 Gold · ΔE 21.4 Green yellow · ΔE 32.9 Yellow green · ΔE 35.4 Goldenrod · ΔE 44.6 Chartreuse · ΔE 47.7

Nearest named CSS colourYellow (#FFFF00)ΔE 3.86, a close match

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1B1BFB

Analogous#FB8B1B, #8BFB1B

Triadic#1BFBFB, #FB1BFB

Split complementary#1B8BFB, #8B1BFB

Tetradic#1BFB8B, #1B1BFB, #FB1B8B

Tints, shades & saturation

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

Lighter +40%#FFFFE3

Lighter +30%#FEFEB1

Lighter +20%#FDFD7F

Lighter +10%#FCFC4D

Darker −10%#DFDF04

Darker −20%#ADAD03

Darker −30%#7B7B02

Darker −40%#494901

More saturated +25%#FFFF17

Less saturated −25%#DEDE38

Channel breakdown

R251

G251

B27

Red251 (98.4%)

Green251 (98.4%)

Blue27 (10.6%)

Hue60°

Saturation (HSL)96.55%

Lightness54.51%

Dominant channelRed and Green

Hex per channelR FB · G FB · B 1B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FBFB1B (chemical formula)

Formula
70.426 g/mol
5 atoms

FBFB1B has a molar mass of 70.426 g/mol, made up of 5 atoms across 2 elements: 2 × F, 3 × B.

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Molar mass

Molar mass70.426 g/mol

Total atoms per molecule5

Distinct elements2

Mass of one molecule1.1694512 × 10^-22 g

Molecules per gram8.5510192 × 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

F54%

B46%

Fluorine (F × 2)37.996 g/mol, 53.952%

Boron (B × 3)32.43 g/mol, 46.048%

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Elements in this formula

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