Recognised as Colour

#F34328

#F34328
Red
Dark
Nearest: Tomato

#F34328 is a red with RGB values 243, 67, 40 and HSL 8°, 89%, 55%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Tomato.

Colour values

#F34328#F34328

HEX#F34328

RGBrgb(243, 67, 40)

RGB (0–1)0.9529, 0.2627, 0.1569

RGB percentages95.3%, 26.3%, 15.7%

HSLhsl(8, 89.4%, 55.5%)

HSV / HSBhsv(8, 83.5%, 95.3%)

CMYK0%, 72.4%, 83.5%, 4.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,942,440

CSS custom property--colour: #F34328;

Brightness & contrast

Relative luminance0.23222WCAG 2.x, 0 is black and 1 is white

Perceived brightness143.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.64:1

Contrast with white3.72:1WCAG normal text: Fail

Contrast with black5.64:1WCAG normal text: AA

Greyscale equivalent#666666

Inverted#0CBCD7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#796C22no red cones; affects about 1% of men; ΔE 71.2 from the original

Deuteranopia#A4931Dno green cones; the most common form, about 1% of men; ΔE 71.6 from the original

Tritanopia#FF003Fno blue cones; rare, and affects men and women equally; ΔE 20.5 from the original

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

Contrast with white, large text3.72:1WCAG large text: AA

Contrast with black, large text5.64:1WCAG large text: AAA

Named colours

Tomato · ΔE 12.8 Orange red · ΔE 15.1 Red · ΔE 19.8 Crimson · ΔE 22.9 Coral · ΔE 24.2 Firebrick · ΔE 25

Nearest named CSS colourTomato (#FF6347)ΔE 12.81, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#28D8F3

Analogous#F32872, #F3A928

Triadic#28F343, #4328F3

Split complementary#28F3A9, #2872F3

Tetradic#72F328, #28D8F3, #A928F3

Tints, shades & saturation

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

Lighter +40%#FEECE9

Lighter +30%#FBC2B9

Lighter +20%#F89789

Lighter +10%#F66D58

Darker −10%#DC280C

Darker −20%#AB1F0A

Darker −30%#7B1607

Darker −40%#4B0E04

More saturated +25%#FF3A1C

Less saturated −25%#D75844

Channel breakdown

R243

G67

B40

Red243 (95.3%)

Green67 (26.3%)

Blue40 (15.7%)

Hue7.98°

Saturation (HSL)89.43%

Lightness55.49%

Dominant channelRed

Hex per channelR F3 · G 43 · B 28

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F34328 (chemical formula)

Formula
652,163.344 g/mol
34328 atoms

F34328 has a molar mass of 652,163.344 g/mol, made up of 34328 atoms across 1 element: 34328 × F.

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Molar mass

Molar mass652,163.344 g/mol

Total atoms per molecule34328

Distinct elements1

Mass of one molecule1.0829427 × 10^-18 g

Molecules per gram9.2340988 × 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 × 34328)652,163.344 g/mol, 100%

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Elements in this formula

Fluorine

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