Recognised as Colour

#FF392F

#FF392F
Red
Dark
Nearest: Tomato

#FF392F is a red with RGB values 255, 57, 47 and HSL 3°, 100%, 59%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Tomato.

Colour values

#FF392F#FF392F

HEX#FF392F

RGBrgb(255, 57, 47)

RGB (0–1)1, 0.2235, 0.1843

RGB percentages100%, 22.4%, 18.4%

HSLhsl(2.9, 100%, 59.2%)

HSV / HSBhsv(2.9, 81.6%, 100%)

CMYK0%, 77.6%, 81.6%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,726,319

CSS custom property--colour: #FF392F;

Brightness & contrast

Relative luminance0.24391WCAG 2.x, 0 is black and 1 is white

Perceived brightness147 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.88:1

Contrast with white3.57:1WCAG normal text: Fail

Contrast with black5.88:1WCAG normal text: AA

Greyscale equivalent#626262

Inverted#00C6D0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#796C2Bno red cones; affects about 1% of men; ΔE 77.8 from the original

Deuteranopia#A99724no green cones; the most common form, about 1% of men; ΔE 78.1 from the original

Tritanopia#FF003Ano blue cones; rare, and affects men and women equally; ΔE 12.8 from the original

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

Contrast with white, large text3.57:1WCAG large text: AA

Contrast with black, large text5.88:1WCAG large text: AAA

Named colours

Tomato · ΔE 16.6 Orange red · ΔE 16.8 Red · ΔE 16.8 Crimson · ΔE 21.4 Firebrick · ΔE 28.1 Coral · ΔE 29.3

Nearest named CSS colourTomato (#FF6347)ΔE 16.58, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2FF5FF

Analogous#FF2F8D, #FFA12F

Triadic#2FFF39, #392FFF

Split complementary#2FFFA1, #2F8DFF

Tetradic#8DFF2F, #2FF5FF, #A12FFF

Tints, shades & saturation

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

Lighter +40%#FFFBFB

Lighter +30%#FFCBC8

Lighter +20%#FF9A95

Lighter +10%#FF6A62

Darker −10%#FB0C00

Darker −20%#C80A00

Darker −30%#950700

Darker −40%#620500

More saturated +25%#FF392F

Less saturated −25%#E55049

Channel breakdown

R255

G57

B47

Red255 (100%)

Green57 (22.4%)

Blue47 (18.4%)

Hue2.88°

Saturation (HSL)100%

Lightness59.22%

Dominant channelRed

Hex per channelR FF · G 39 · B 2F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF392F (chemical formula)

Formula
7,485.212 g/mol
394 atoms

FF392F has a molar mass of 7,485.212 g/mol, made up of 394 atoms across 1 element: 394 × F.

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Molar mass

Molar mass7,485.212 g/mol

Total atoms per molecule394

Distinct elements1

Mass of one molecule1.2429487 × 10^-20 g

Molecules per gram8.0453844 × 10^19

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 × 394)7,485.212 g/mol, 100%

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Elements in this formula

Fluorine

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