Recognised as Colour

#F9B305

#F9B305
Orange
Light
Nearest: Orange

#F9B305 is a orange with RGB values 249, 179, 5 and HSL 43°, 96%, 50%. It is a light colour, so black text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Orange.

Colour values

#F9B305#F9B305

HEX#F9B305

RGBrgb(249, 179, 5)

RGB (0–1)0.9765, 0.702, 0.0196

RGB percentages97.6%, 70.2%, 2%

HSLhsl(42.8, 96.1%, 49.8%)

HSV / HSBhsv(42.8, 98%, 97.6%)

CMYK0%, 28.1%, 98%, 2.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,364,293

CSS custom property--colour: #F9B305;

Brightness & contrast

Relative luminance0.52391WCAG 2.x, 0 is black and 1 is white

Perceived brightness193.3 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 11.48:1

Contrast with white1.83:1WCAG normal text: Fail

Contrast with black11.48:1WCAG normal text: AAA

Greyscale equivalent#B5B5B5

Inverted#064CFA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#CEB500no red cones; affects about 1% of men; ΔE 20.6 from the original

Deuteranopia#DFC719no green cones; the most common form, about 1% of men; ΔE 21.6 from the original

Tritanopia#FF9F99no blue cones; rare, and affects men and women equally; ΔE 65 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text1.83:1WCAG large text: Fail

Contrast with black, large text11.48:1WCAG large text: AAA

Named colours

Orange · ΔE 10.2 Goldenrod · ΔE 14.1 Gold · ΔE 20 Dark orange · ΔE 24.5 Dark goldenrod · ΔE 25.4 Sandy brown · ΔE 34.4

Nearest named CSS colourOrange (#FFA500)ΔE 10.18, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#054BF9

Analogous#F93905, #C5F905

Triadic#05F9B3, #B305F9

Split complementary#05C5F9, #3905F9

Tetradic#05F939, #054BF9, #F905C5

Tints, shades & saturation

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

Lighter +40%#FEF0CC

Lighter +30%#FDE19A

Lighter +20%#FCD268

Lighter +10%#FBC236

Darker −10%#C78F04

Darker −20%#956B03

Darker −30%#634702

Darker −40%#312301

More saturated +25%#FEB500

Less saturated −25%#D9A525

Channel breakdown

R249

G179

Red249 (97.6%)

Green179 (70.2%)

Blue5 (2%)

Hue42.79°

Saturation (HSL)96.06%

Lightness49.8%

Dominant channelRed

Hex per channelR F9 · G B3 · B 05

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F9B305 (chemical formula)

Formula
3,468.032 g/mol
314 atoms

F9B305 has a molar mass of 3,468.032 g/mol, made up of 314 atoms across 2 elements: 9 × F, 305 × B.

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Molar mass

Molar mass3,468.032 g/mol

Total atoms per molecule314

Distinct elements2

Mass of one molecule5.7588026 × 10^-21 g

Molecules per gram1.7364721 × 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

F4.9%

B95.1%

Fluorine (F × 9)170.982 g/mol, 4.93%

Boron (B × 305)3,297.05 g/mol, 95.07%

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Elements in this formula

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