Recognised as Colour

#F71F46

#F71F46
Red
Dark
Nearest: Crimson

#F71F46 is a red with RGB values 247, 31, 70 and HSL 349°, 93%, 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

#F71F46#F71F46

HEX#F71F46

RGBrgb(247, 31, 70)

RGB (0–1)0.9686, 0.1216, 0.2745

RGB percentages96.9%, 12.2%, 27.5%

HSLhsl(349.2, 93.1%, 54.5%)

HSV / HSBhsv(349.2, 87.4%, 96.9%)

CMYK0%, 87.4%, 71.7%, 3.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,195,398

CSS custom property--colour: #F71F46;

Brightness & contrast

Relative luminance0.21196WCAG 2.x, 0 is black and 1 is white

Perceived brightness139.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.24:1

Contrast with white4.01:1WCAG normal text: Fail

Contrast with black5.24:1WCAG normal text: AA

Greyscale equivalent#505050

Inverted#08E0B9

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6A6245no red cones; affects about 1% of men; ΔE 81.1 from the original

Deuteranopia#9D8F3Eno green cones; the most common form, about 1% of men; ΔE 82.2 from the original

Tritanopia#FF0032no blue cones; rare, and affects men and women equally; ΔE 12.9 from the original

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

Contrast with white, large text4.01:1WCAG large text: AA

Contrast with black, large text5.24:1WCAG large text: AAA

Named colours

Crimson · ΔE 8.7 Tomato · ΔE 23 Firebrick · ΔE 24.9 Red · ΔE 31.2 Brown · ΔE 31.5 Orange red · ΔE 34.1

Nearest named CSS colourCrimson (#DC143C)ΔE 8.65, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1FF7D0

Analogous#F71FB2, #F7641F

Triadic#46F71F, #1F46F7

Split complementary#1FF764, #1FB2F7

Tetradic#B2F71F, #1FF7D0, #641FF7

Tints, shades & saturation

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

Lighter +40%#FEE4E9

Lighter +30%#FCB3C0

Lighter +20%#FB8197

Lighter +10%#F9506F

Darker −10%#DB082E

Darker −20%#AA0624

Darker −30%#790419

Darker −40%#47030F

More saturated +25%#FF1741

Less saturated −25%#DA3C59

Channel breakdown

R247

G31

B70

Red247 (96.9%)

Green31 (12.2%)

Blue70 (27.5%)

Hue349.17°

Saturation (HSL)93.1%

Lightness54.51%

Dominant channelRed

Hex per channelR F7 · G 1F · B 46

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F71F46 (chemical formula)

Formula
2,222.766 g/mol
117 atoms

F71F46 has a molar mass of 2,222.766 g/mol, made up of 117 atoms across 1 element: 117 × F.

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Molar mass

Molar mass2,222.766 g/mol

Total atoms per molecule117

Distinct elements1

Mass of one molecule3.6909898 × 10^-21 g

Molecules per gram2.7093004 × 10^20

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 × 117)2,222.766 g/mol, 100%

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Elements in this formula

Fluorine

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