Recognised as Colour

#FF3549

#FF3549
Red
Dark
Nearest: Crimson

#FF3549 is a red with RGB values 255, 53, 73 and HSL 354°, 100%, 60%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF3549#FF3549

HEX#FF3549

RGBrgb(255, 53, 73)

RGB (0–1)1, 0.2078, 0.2863

RGB percentages100%, 20.8%, 28.6%

HSLhsl(354.1, 100%, 60.4%)

HSV / HSBhsv(354.1, 79.2%, 100%)

CMYK0%, 79.2%, 71.4%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,725,321

CSS custom property--colour: #FF3549;

Brightness & contrast

Relative luminance0.24287WCAG 2.x, 0 is black and 1 is white

Perceived brightness147.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.86:1

Contrast with white3.59:1WCAG normal text: Fail

Contrast with black5.86:1WCAG normal text: AA

Greyscale equivalent#616161

Inverted#00CAB6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#746C48no red cones; affects about 1% of men; ΔE 79.4 from the original

Deuteranopia#A69642no green cones; the most common form, about 1% of men; ΔE 79.2 from the original

Tritanopia#FF003Fno blue cones; rare, and affects men and women equally; ΔE 8.1 from the original

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

Contrast with white, large text3.59:1WCAG large text: AA

Contrast with black, large text5.86:1WCAG large text: AAA

Named colours

Crimson · ΔE 11.1 Tomato · ΔE 18.8 Firebrick · ΔE 25 Red · ΔE 29.3 Orange red · ΔE 30.9 Brown · ΔE 31.8

Nearest named CSS colourCrimson (#DC143C)ΔE 11.07, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#35FFEB

Analogous#FF35AE, #FF8635

Triadic#49FF35, #3549FF

Split complementary#35FF86, #35AEFF

Tetradic#AEFF35, #35FFEB, #8635FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFCED3

Lighter +20%#FF9BA5

Lighter +10%#FF6877

Darker −10%#FF021B

Darker −20%#CE0014

Darker −30%#9B000F

Darker −40%#68000A

More saturated +25%#FF3549

Less saturated −25%#E64E5D

Channel breakdown

R255

G53

B73

Red255 (100%)

Green53 (20.8%)

Blue73 (28.6%)

Hue354.06°

Saturation (HSL)100%

Lightness60.39%

Dominant channelRed

Hex per channelR FF · G 35 · B 49

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF3549 (chemical formula)

Formula
67,442.9 g/mol
3550 atoms

FF3549 has a molar mass of 67,442.9 g/mol, made up of 3550 atoms across 1 element: 3550 × F.

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Molar mass

Molar mass67,442.9 g/mol

Total atoms per molecule3550

Distinct elements1

Mass of one molecule1.1199157 × 10^-19 g

Molecules per gram8.9292435 × 10^18

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 × 3550)67,442.9 g/mol, 100%

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Elements in this formula

Fluorine

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