Recognised as Colour

#F50019

#F50019
Red
Dark
Nearest: Red

#F50019 is a red with RGB values 245, 0, 25 and HSL 354°, 100%, 48%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#F50019#F50019

HEX#F50019

RGBrgb(245, 0, 25)

RGB (0–1)0.9608, 0, 0.098

RGB percentages96.1%, 0%, 9.8%

HSLhsl(353.9, 100%, 48%)

HSV / HSBhsv(353.9, 100%, 96.1%)

CMYK0%, 100%, 89.8%, 3.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,056,345

CSS custom property--colour: #F50019;

Brightness & contrast

Relative luminance0.19483WCAG 2.x, 0 is black and 1 is white

Perceived brightness134.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.9:1

Contrast with white4.29:1WCAG normal text: Fail

Contrast with black4.9:1WCAG normal text: AA

Greyscale equivalent#363636

Inverted#0AFFE6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#685B13no red cones; affects about 1% of men; ΔE 83.8 from the original

Deuteranopia#9C8B00no green cones; the most common form, about 1% of men; ΔE 84.2 from the original

Tritanopia#FF0015no blue cones; rare, and affects men and women equally; ΔE 4.9 from the original

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

Contrast with white, large text4.29:1WCAG large text: AA

Contrast with black, large text4.9:1WCAG large text: AAA

Named colours

Red · ΔE 9.9 Orange red · ΔE 16.4 Crimson · ΔE 25.5 Tomato · ΔE 25.5 Firebrick · ΔE 32.2 Coral · ΔE 37.7

Nearest named CSS colourRed (#FF0000)ΔE 9.94, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00F5DC

Analogous#F50093, #F56200

Triadic#19F500, #0019F5

Split complementary#00F562, #0093F5

Tetradic#93F500, #00F5DC, #6200F5

Tints, shades & saturation

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

Lighter +40%#FFC2C8

Lighter +30%#FF8F9A

Lighter +20%#FF5C6D

Lighter +10%#FF293F

Darker −10%#C20014

Darker −20%#8F000F

Darker −30%#5C0009

Darker −40%#290004

More saturated +25%#F50019

Less saturated −25%#D61F31

Channel breakdown

R245

B25

Red245 (96.1%)

Green0 (0%)

Blue25 (9.8%)

Hue353.88°

Saturation (HSL)100%

Lightness48.04%

Dominant channelRed

Hex per channelR F5 · G 00 · B 19

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F50019 (chemical formula)

Formula
950,260.962 g/mol
50019 atoms

F50019 has a molar mass of 950,260.962 g/mol, made up of 50019 atoms across 1 element: 50019 × F.

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Molar mass

Molar mass950,260.962 g/mol

Total atoms per molecule50019

Distinct elements1

Mass of one molecule1.5779455 × 10^-18 g

Molecules per gram6.3373547 × 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 × 50019)950,260.962 g/mol, 100%

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Elements in this formula

Fluorine

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