Recognised as Colour

#FF9550

#FF9550
Orange
Dark
Nearest: Sandy brown

#FF9550 is a orange with RGB values 255, 149, 80 and HSL 24°, 100%, 66%. It is a dark colour, so black text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Sandy brown.

Colour values

#FF9550#FF9550

HEX#FF9550

RGBrgb(255, 149, 80)

RGB (0–1)1, 0.5843, 0.3137

RGB percentages100%, 58.4%, 31.4%

HSLhsl(23.7, 100%, 65.7%)

HSV / HSBhsv(23.7, 68.6%, 100%)

CMYK0%, 41.6%, 68.6%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,749,904

CSS custom property--colour: #FF9550;

Brightness & contrast

Relative luminance0.43334WCAG 2.x, 0 is black and 1 is white

Perceived brightness182.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 9.67:1

Contrast with white2.17:1WCAG normal text: Fail

Contrast with black9.67:1WCAG normal text: AAA

Greyscale equivalent#A7A7A7

Inverted#006AAF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#B3A149no red cones; affects about 1% of men; ΔE 39.5 from the original

Deuteranopia#CDB94Fno green cones; the most common form, about 1% of men; ΔE 40 from the original

Tritanopia#FF7F86no blue cones; rare, and affects men and women equally; ΔE 36.7 from the original

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

Contrast with white, large text2.17:1WCAG large text: Fail

Contrast with black, large text9.67:1WCAG large text: AAA

Named colours

Sandy brown · ΔE 12.8 Coral · ΔE 13 Chocolate · ΔE 16.6 Peru · ΔE 17 Light salmon · ΔE 18.4 Dark orange · ΔE 23.2

Nearest named CSS colourSandy brown (#F4A460)ΔE 12.83, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#50BAFF

Analogous#FF5063, #FFEC50

Triadic#50FF95, #9550FF

Split complementary#50FFEC, #5063FF

Tetradic#63FF50, #50BAFF, #EC50FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFF2E9

Lighter +20%#FFD3B6

Lighter +10%#FFB483

Darker −10%#FF761D

Darker −20%#E95C00

Darker −30%#B64800

Darker −40%#833400

More saturated +25%#FF9550

Less saturated −25%#E99A66

Channel breakdown

R255

G149

B80

Red255 (100%)

Green149 (58.4%)

Blue80 (31.4%)

Hue23.66°

Saturation (HSL)100%

Lightness65.69%

Dominant channelRed

Hex per channelR FF · G 95 · B 50

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF9550 (chemical formula)

Formula
181,449.898 g/mol
9551 atoms

FF9550 has a molar mass of 181,449.898 g/mol, made up of 9551 atoms across 1 element: 9551 × F.

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Molar mass

Molar mass181,449.898 g/mol

Total atoms per molecule9551

Distinct elements1

Mass of one molecule3.0130464 × 10^-19 g

Molecules per gram3.3189001 × 10^18

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

F100%

Fluorine (F × 9551)181,449.898 g/mol, 100%

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Elements in this formula

Fluorine

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