Recognised as Colour

#F70541

#F70541
Red
Dark
Nearest: Crimson

#F70541 is a red with RGB values 247, 5, 65 and HSL 345°, 96%, 49%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#F70541#F70541

HEX#F70541

RGBrgb(247, 5, 65)

RGB (0–1)0.9686, 0.0196, 0.2549

RGB percentages96.9%, 2%, 25.5%

HSLhsl(345.1, 96%, 49.4%)

HSV / HSBhsv(345.1, 98%, 96.9%)

CMYK0%, 98%, 73.7%, 3.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,188,737

CSS custom property--colour: #F70541;

Brightness & contrast

Relative luminance0.20264WCAG 2.x, 0 is black and 1 is white

Perceived brightness136.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.05:1

Contrast with white4.16:1WCAG normal text: Fail

Contrast with black5.05:1WCAG normal text: AA

Greyscale equivalent#3D3D3D

Inverted#08FABE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#665E40no red cones; affects about 1% of men; ΔE 84 from the original

Deuteranopia#9C8C39no green cones; the most common form, about 1% of men; ΔE 83.9 from the original

Tritanopia#FF0028no blue cones; rare, and affects men and women equally; ΔE 15.6 from the original

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

Contrast with white, large text4.16:1WCAG large text: AA

Contrast with black, large text5.05:1WCAG large text: AAA

Named colours

Crimson · ΔE 10.5 Tomato · ΔE 24.9 Firebrick · ΔE 26.5 Red · ΔE 29.3 Orange red · ΔE 33.4 Brown · ΔE 33.6

Nearest named CSS colourCrimson (#DC143C)ΔE 10.52, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#05F7BB

Analogous#F705BA, #F74205

Triadic#41F705, #0541F7

Split complementary#05F742, #05BAF7

Tetradic#BAF705, #05F7BB, #4205F7

Tints, shades & saturation

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

Lighter +40%#FECAD7

Lighter +30%#FD98B1

Lighter +20%#FC668B

Lighter +10%#FB3465

Darker −10%#C50434

Darker −20%#930327

Darker −30%#61021A

Darker −40%#2F010C

More saturated +25%#FC003E

Less saturated −25%#D82551

Channel breakdown

R247

B65

Red247 (96.9%)

Green5 (2%)

Blue65 (25.5%)

Hue345.12°

Saturation (HSL)96.03%

Lightness49.41%

Dominant channelRed

Hex per channelR F7 · G 05 · B 41

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F70541 (chemical formula)

Formula
1,340,137.918 g/mol
70541 atoms

F70541 has a molar mass of 1,340,137.918 g/mol, made up of 70541 atoms across 1 element: 70541 × F.

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Molar mass

Molar mass1,340,137.918 g/mol

Total atoms per molecule70541

Distinct elements1

Mass of one molecule2.2253514 × 10^-18 g

Molecules per gram4.4936724 × 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 × 70541)1,340,137.918 g/mol, 100%

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Elements in this formula

Fluorine

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