Recognised as Colour

#FF8720

#FF8720
Orange
Dark
Nearest: Dark orange

#FF8720 is a orange with RGB values 255, 135, 32 and HSL 28°, 100%, 56%. It is a dark colour, so black text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Dark orange.

Colour values

#FF8720#FF8720

HEX#FF8720

RGBrgb(255, 135, 32)

RGB (0–1)1, 0.5294, 0.1255

RGB percentages100%, 52.9%, 12.5%

HSLhsl(27.7, 100%, 56.3%)

HSV / HSBhsv(27.7, 87.5%, 100%)

CMYK0%, 47.1%, 87.5%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,746,272

CSS custom property--colour: #FF8720;

Brightness & contrast

Relative luminance0.38692WCAG 2.x, 0 is black and 1 is white

Perceived brightness173.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 8.74:1

Contrast with white2.4:1WCAG normal text: Fail

Contrast with black8.74:1WCAG normal text: AAA

Greyscale equivalent#999999

Inverted#0078DF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#AA9600no red cones; affects about 1% of men; ΔE 45.7 from the original

Deuteranopia#C7B21Dno green cones; the most common form, about 1% of men; ΔE 46.6 from the original

Tritanopia#FF6C75no blue cones; rare, and affects men and women equally; ΔE 48.4 from the original

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

Contrast with white, large text2.4:1WCAG large text: Fail

Contrast with black, large text8.74:1WCAG large text: AAA

Named colours

Dark orange · ΔE 7.3 Chocolate · ΔE 17.6 Orange · ΔE 19.8 Coral · ΔE 22.1 Sandy brown · ΔE 28.2 Peru · ΔE 28.6

Nearest named CSS colourDark orange (#FF8C00)ΔE 7.32, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2098FF

Analogous#FF2029, #FFF620

Triadic#20FF87, #8720FF

Split complementary#20FFF7, #2028FF

Tetradic#29FF20, #2098FF, #F720FF

Tints, shades & saturation

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

Lighter +40%#FFF5EC

Lighter +30%#FFD9B9

Lighter +20%#FFBE86

Lighter +10%#FFA253

Darker −10%#EC6D00

Darker −20%#B95500

Darker −30%#863E00

Darker −40%#532600

More saturated +25%#FF8720

Less saturated −25%#E3893C

Channel breakdown

R255

G135

B32

Red255 (100%)

Green135 (52.9%)

Blue32 (12.5%)

Hue27.71°

Saturation (HSL)100%

Lightness56.27%

Dominant channelRed

Hex per channelR FF · G 87 · B 20

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF8720 (chemical formula)

Formula
165,681.558 g/mol
8721 atoms

FF8720 has a molar mass of 165,681.558 g/mol, made up of 8721 atoms across 1 element: 8721 × F.

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Molar mass

Molar mass165,681.558 g/mol

Total atoms per molecule8721

Distinct elements1

Mass of one molecule2.751207 × 10^-19 g

Molecules per gram3.6347683 × 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 × 8721)165,681.558 g/mol, 100%

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Elements in this formula

Fluorine

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