Recognised as Colour

#FBCB34

#FBCB34
Yellow
Light
Nearest: Gold

#FBCB34 is a yellow with RGB values 251, 203, 52 and HSL 46°, 96%, 59%. It is a light colour, so black text on it reaches 13.7:1 contrast (AAA for normal text). The nearest named colour is Gold.

Colour values

#FBCB34#FBCB34

HEX#FBCB34

RGBrgb(251, 203, 52)

RGB (0–1)0.9843, 0.7961, 0.2039

RGB percentages98.4%, 79.6%, 20.4%

HSLhsl(45.5, 96.1%, 59.4%)

HSV / HSBhsv(45.5, 79.3%, 98.4%)

CMYK0%, 19.1%, 79.3%, 1.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,501,556

CSS custom property--colour: #FBCB34;

Brightness & contrast

Relative luminance0.63469WCAG 2.x, 0 is black and 1 is white

Perceived brightness208.2 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 13.69:1

Contrast with white1.53:1WCAG normal text: Fail

Contrast with black13.69:1WCAG normal text: AAA

Greyscale equivalent#CACACA

Inverted#0434CB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#E3C90Cno red cones; affects about 1% of men; ΔE 11.7 from the original

Deuteranopia#EFD63Eno green cones; the most common form, about 1% of men; ΔE 10.7 from the original

Tritanopia#FFB9AFno blue cones; rare, and affects men and women equally; ΔE 63.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text1.53:1WCAG large text: Fail

Contrast with black, large text13.69:1WCAG large text: AAA

Named colours

Gold · ΔE 13.3 Goldenrod · ΔE 15.3 Orange · ΔE 22.6 Dark goldenrod · ΔE 28.3 Khaki · ΔE 33.5 Yellow · ΔE 34.2

Nearest named CSS colourGold (#FFD700)ΔE 13.33, a distinctly different colour

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3464FB

Analogous#FB6734, #C7FB34

Triadic#34FBCB, #CB34FB

Split complementary#34C7FB, #6834FB

Tetradic#34FB68, #3464FB, #FB34C7

Tints, shades & saturation

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

Lighter +40%#FFFEFC

Lighter +30%#FEF1CA

Lighter +20%#FDE598

Lighter +10%#FCD866

Darker −10%#F7BD05

Darker −20%#C59704

Darker −30%#937003

Darker −40%#614A02

More saturated +25%#FFCD30

Less saturated −25%#E1BE4E

Channel breakdown

R251

G203

B52

Red251 (98.4%)

Green203 (79.6%)

Blue52 (20.4%)

Hue45.53°

Saturation (HSL)96.14%

Lightness59.41%

Dominant channelRed

Hex per channelR FB · G CB · B 34

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FBCB34 (chemical formula)

Formula
409.359 g/mol
37 atoms

FBCB34 has a molar mass of 409.359 g/mol, made up of 37 atoms across 3 elements: 1 × F, 35 × B, 1 × C.

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Molar mass

Molar mass409.359 g/mol

Total atoms per molecule37

Distinct elements3

Mass of one molecule6.7975661 × 10^-22 g

Molecules per gram1.4711148 × 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

F4.6%

B92.4%

C2.9%

Fluorine (F)18.998 g/mol, 4.641%

Boron (B × 35)378.35 g/mol, 92.425%

Carbon (C)12.011 g/mol, 2.934%

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Elements in this formula

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