Recognised as Colour

#F52445

#F52445
Red
Dark
Nearest: Crimson

#F52445 is a red with RGB values 245, 36, 69 and HSL 351°, 91%, 55%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#F52445#F52445

HEX#F52445

RGBrgb(245, 36, 69)

RGB (0–1)0.9608, 0.1412, 0.2706

RGB percentages96.1%, 14.1%, 27.1%

HSLhsl(350.5, 91.3%, 55.1%)

HSV / HSBhsv(350.5, 85.3%, 96.1%)

CMYK0%, 85.3%, 71.8%, 3.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,065,605

CSS custom property--colour: #F52445;

Brightness & contrast

Relative luminance0.21104WCAG 2.x, 0 is black and 1 is white

Perceived brightness138.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.22:1

Contrast with white4.02:1WCAG normal text: Fail

Contrast with black5.22:1WCAG normal text: AA

Greyscale equivalent#535353

Inverted#0ADBBA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6A6344no red cones; affects about 1% of men; ΔE 80.3 from the original

Deuteranopia#9D8E3Eno green cones; the most common form, about 1% of men; ΔE 80.1 from the original

Tritanopia#FF0034no blue cones; rare, and affects men and women equally; ΔE 12.2 from the original

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

Contrast with white, large text4.02:1WCAG large text: AA

Contrast with black, large text5.22:1WCAG large text: AAA

Named colours

Crimson · ΔE 7.9 Tomato · ΔE 21.7 Firebrick · ΔE 23.7 Brown · ΔE 30.3 Red · ΔE 31 Orange red · ΔE 33.4

Nearest named CSS colourCrimson (#DC143C)ΔE 7.88, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#24F5D4

Analogous#F524AD, #F56C24

Triadic#45F524, #2445F5

Split complementary#24F56C, #24ADF5

Tetradic#ADF524, #24F5D4, #6C24F5

Tints, shades & saturation

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

Lighter +40%#FEE7EB

Lighter +30%#FCB6C1

Lighter +20%#F98698

Lighter +10%#F7556E

Darker −10%#DC0A2B

Darker −20%#AB0822

Darker −30%#7A0618

Darker −40%#4A030E

More saturated +25%#FF1A3E

Less saturated −25%#D84159

Channel breakdown

R245

G36

B69

Red245 (96.1%)

Green36 (14.1%)

Blue69 (27.1%)

Hue350.53°

Saturation (HSL)91.27%

Lightness55.1%

Dominant channelRed

Hex per channelR F5 · G 24 · B 45

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F52445 (chemical formula)

Formula
996,350.11 g/mol
52445 atoms

F52445 has a molar mass of 996,350.11 g/mol, made up of 52445 atoms across 1 element: 52445 × F.

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Molar mass

Molar mass996,350.11 g/mol

Total atoms per molecule52445

Distinct elements1

Mass of one molecule1.6544783 × 10^-18 g

Molecules per gram6.0442014 × 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 × 52445)996,350.11 g/mol, 100%

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Elements in this formula

Fluorine

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