Recognised as Colour

#F66813

#F66813
Orange
Dark
Nearest: Orange red

#F66813 is a orange with RGB values 246, 104, 19 and HSL 22°, 93%, 52%. It is a dark colour, so black text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#F66813#F66813

HEX#F66813

RGBrgb(246, 104, 19)

RGB (0–1)0.9647, 0.4078, 0.0745

RGB percentages96.5%, 40.8%, 7.5%

HSLhsl(22.5, 92.7%, 52%)

HSV / HSBhsv(22.5, 92.3%, 96.5%)

CMYK0%, 57.7%, 92.3%, 3.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,148,499

CSS custom property--colour: #F66813;

Brightness & contrast

Relative luminance0.2954WCAG 2.x, 0 is black and 1 is white

Perceived brightness156.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.91:1

Contrast with white3.04:1WCAG normal text: Fail

Contrast with black6.91:1WCAG normal text: AA

Greyscale equivalent#808080

Inverted#0997EC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#918000no red cones; affects about 1% of men; ΔE 57.1 from the original

Deuteranopia#B4A004no green cones; the most common form, about 1% of men; ΔE 57.4 from the original

Tritanopia#FF445Ano blue cones; rare, and affects men and women equally; ΔE 40.4 from the original

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

Contrast with white, large text3.04:1WCAG large text: AA

Contrast with black, large text6.91:1WCAG large text: AAA

Named colours

Orange red · ΔE 17.3 Chocolate · ΔE 17.8 Dark orange · ΔE 18.8 Coral · ΔE 20.7 Tomato · ΔE 21.2 Red · ΔE 30.1

Nearest named CSS colourOrange red (#FF4500)ΔE 17.32, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#13A1F6

Analogous#F61330, #F6DA13

Triadic#13F668, #6813F6

Split complementary#13F6DA, #1330F6

Tetradic#2FF613, #13A1F6, #DA13F6

Tints, shades & saturation

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

Lighter +40%#FDE6D8

Lighter +30%#FCC6A6

Lighter +20%#FAA775

Lighter +10%#F88744

Darker −10%#CE5208

Darker −20%#9D3F06

Darker −30%#6C2B04

Darker −40%#3B1702

More saturated +25%#FF660A

Less saturated −25%#D77032

Channel breakdown

R246

G104

B19

Red246 (96.5%)

Green104 (40.8%)

Blue19 (7.5%)

Hue22.47°

Saturation (HSL)92.65%

Lightness51.96%

Dominant channelRed

Hex per channelR F6 · G 68 · B 13

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F66813 (chemical formula)

Formula
1,269,313.374 g/mol
66813 atoms

F66813 has a molar mass of 1,269,313.374 g/mol, made up of 66813 atoms across 1 element: 66813 × F.

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Molar mass

Molar mass1,269,313.374 g/mol

Total atoms per molecule66813

Distinct elements1

Mass of one molecule2.1077444 × 10^-18 g

Molecules per gram4.7444082 × 10^17

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 × 66813)1,269,313.374 g/mol, 100%

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Elements in this formula

Fluorine

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