Recognised as Colour

#F71135

#F71135
Red
Dark
Nearest: Crimson

#F71135 is a red with RGB values 247, 17, 53 and HSL 351°, 93%, 52%. 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

#F71135#F71135

HEX#F71135

RGBrgb(247, 17, 53)

RGB (0–1)0.9686, 0.0667, 0.2078

RGB percentages96.9%, 6.7%, 20.8%

HSLhsl(350.6, 93.5%, 51.8%)

HSV / HSBhsv(350.6, 93.1%, 96.9%)

CMYK0%, 93.1%, 78.5%, 3.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,191,797

CSS custom property--colour: #F71135;

Brightness & contrast

Relative luminance0.20432WCAG 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 5.09:1

Contrast with white4.13:1WCAG normal text: Fail

Contrast with black5.09:1WCAG normal text: AA

Greyscale equivalent#444444

Inverted#08EECA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#695F33no red cones; affects about 1% of men; ΔE 83.3 from the original

Deuteranopia#9D8D2Bno green cones; the most common form, about 1% of men; ΔE 83.4 from the original

Tritanopia#FF0026no blue cones; rare, and affects men and women equally; ΔE 9.9 from the original

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

Contrast with white, large text4.13:1WCAG large text: AA

Contrast with black, large text5.09:1WCAG large text: AAA

Named colours

Crimson · ΔE 14.3 Tomato · ΔE 22.2 Red · ΔE 22.3 Orange red · ΔE 26.4 Firebrick · ΔE 26.5 Brown · ΔE 34.8

Nearest named CSS colourCrimson (#DC143C)ΔE 14.29, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#11F7D3

Analogous#F711A8, #F76011

Triadic#35F711, #1135F7

Split complementary#11F760, #11A8F7

Tetradic#A8F711, #11F7D3, #6011F7

Tints, shades & saturation

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

Lighter +40%#FED6DD

Lighter +30%#FCA5B3

Lighter +20%#FA7489

Lighter +10%#F9425F

Darker −10%#CE0726

Darker −20%#9D051D

Darker −30%#6B0414

Darker −40%#3A020B

More saturated +25%#FF0930

Less saturated −25%#D8304A

Channel breakdown

R247

G17

B53

Red247 (96.9%)

Green17 (6.7%)

Blue53 (20.8%)

Hue350.61°

Saturation (HSL)93.5%

Lightness51.76%

Dominant channelRed

Hex per channelR F7 · G 11 · B 35

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F71135 (chemical formula)

Formula
1,351,422.73 g/mol
71135 atoms

F71135 has a molar mass of 1,351,422.73 g/mol, made up of 71135 atoms across 1 element: 71135 × F.

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Molar mass

Molar mass1,351,422.73 g/mol

Total atoms per molecule71135

Distinct elements1

Mass of one molecule2.2440902 × 10^-18 g

Molecules per gram4.4561488 × 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 × 71135)1,351,422.73 g/mol, 100%

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Elements in this formula

Fluorine

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