Recognised as Colour

#F58104

#F58104
Orange
Dark
Nearest: Dark orange

#F58104 is a orange with RGB values 245, 129, 4 and HSL 31°, 97%, 49%. It is a dark colour, so black text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Dark orange.

Colour values

#F58104#F58104

HEX#F58104

RGBrgb(245, 129, 4)

RGB (0–1)0.9608, 0.5059, 0.0157

RGB percentages96.1%, 50.6%, 1.6%

HSLhsl(31.1, 96.8%, 48.8%)

HSV / HSBhsv(31.1, 98.4%, 96.1%)

CMYK0%, 47.3%, 98.4%, 3.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,089,348

CSS custom property--colour: #F58104;

Brightness & contrast

Relative luminance0.35122WCAG 2.x, 0 is black and 1 is white

Perceived brightness166.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 8.02:1

Contrast with white2.62:1WCAG normal text: Fail

Contrast with black8.02:1WCAG normal text: AAA

Greyscale equivalent#919191

Inverted#0A7EFB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#A49000no red cones; affects about 1% of men; ΔE 44.5 from the original

Deuteranopia#C0AA00no green cones; the most common form, about 1% of men; ΔE 44.7 from the original

Tritanopia#FF666Eno blue cones; rare, and affects men and women equally; ΔE 50.2 from the original

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

Contrast with white, large text2.62:1WCAG large text: Fail

Contrast with black, large text8.02:1WCAG large text: AAA

Named colours

Dark orange · ΔE 5.3 Chocolate · ΔE 18.2 Orange · ΔE 18.5 Coral · ΔE 25.5 Peru · ΔE 29.8 Goldenrod · ΔE 30.5

Nearest named CSS colourDark orange (#FF8C00)ΔE 5.3, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0478F5

Analogous#F50804, #F1F504

Triadic#04F581, #8104F5

Split complementary#04F1F5, #0804F5

Tetradic#04F508, #0478F5, #F504F1

Tints, shades & saturation

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

Lighter +40%#FEE4C7

Lighter +30%#FDCB95

Lighter +20%#FCB263

Lighter +10%#FC9A30

Darker −10%#C36703

Darker −20%#914C02

Darker −30%#5E3202

Darker −40%#2C1701

More saturated +25%#F98100

Less saturated −25%#D68023

Channel breakdown

R245

G129

Red245 (96.1%)

Green129 (50.6%)

Blue4 (1.6%)

Hue31.12°

Saturation (HSL)96.79%

Lightness48.82%

Dominant channelRed

Hex per channelR F5 · G 81 · B 04

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F58104 (chemical formula)

Formula
1,103,859.792 g/mol
58104 atoms

F58104 has a molar mass of 1,103,859.792 g/mol, made up of 58104 atoms across 1 element: 58104 × F.

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Molar mass

Molar mass1,103,859.792 g/mol

Total atoms per molecule58104

Distinct elements1

Mass of one molecule1.8330023 × 10^-18 g

Molecules per gram5.4555305 × 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 × 58104)1,103,859.792 g/mol, 100%

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Elements in this formula

Fluorine

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