Recognised as Colour

#FF2758

#FF2758
Red
Dark
Nearest: Crimson

#FF2758 is a red with RGB values 255, 39, 88 and HSL 346°, 100%, 58%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF2758#FF2758

HEX#FF2758

RGBrgb(255, 39, 88)

RGB (0–1)1, 0.1529, 0.3451

RGB percentages100%, 15.3%, 34.5%

HSLhsl(346.4, 100%, 57.6%)

HSV / HSBhsv(346.4, 84.7%, 100%)

CMYK0%, 84.7%, 65.5%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,721,752

CSS custom property--colour: #FF2758;

Brightness & contrast

Relative luminance0.23416WCAG 2.x, 0 is black and 1 is white

Perceived brightness145.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.68:1

Contrast with white3.7:1WCAG normal text: Fail

Contrast with black5.68:1WCAG normal text: AA

Greyscale equivalent#585858

Inverted#00D8A7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6D6958no red cones; affects about 1% of men; ΔE 82.3 from the original

Deuteranopia#A29552no green cones; the most common form, about 1% of men; ΔE 82.9 from the original

Tritanopia#FF003Eno blue cones; rare, and affects men and women equally; ΔE 13.5 from the original

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

Contrast with white, large text3.7:1WCAG large text: AA

Contrast with black, large text5.68:1WCAG large text: AAA

Named colours

Crimson · ΔE 11.9 Tomato · ΔE 27.4 Firebrick · ΔE 28.7 Brown · ΔE 33.4 Indian red · ΔE 33.7 Salmon · ΔE 34.6

Nearest named CSS colourCrimson (#DC143C)ΔE 11.88, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#27FFCE

Analogous#FF27C4, #FF6227

Triadic#58FF27, #2758FF

Split complementary#27FF62, #27C4FF

Tetradic#C4FF27, #27FFCE, #6227FF

Tints, shades & saturation

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

Lighter +40%#FFF3F6

Lighter +30%#FFC0CE

Lighter +20%#FF8DA7

Lighter +10%#FF5A7F

Darker −10%#F30037

Darker −20%#C0002C

Darker −30%#8D0020

Darker −40%#5A0014

More saturated +25%#FF2758

Less saturated −25%#E44267

Channel breakdown

R255

G39

B88

Red255 (100%)

Green39 (15.3%)

Blue88 (34.5%)

Hue346.39°

Saturation (HSL)100%

Lightness57.65%

Dominant channelRed

Hex per channelR FF · G 27 · B 58

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF2758 (chemical formula)

Formula
52,415.482 g/mol
2759 atoms

FF2758 has a molar mass of 52,415.482 g/mol, made up of 2759 atoms across 1 element: 2759 × F.

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Molar mass

Molar mass52,415.482 g/mol

Total atoms per molecule2759

Distinct elements1

Mass of one molecule8.7037956 × 10^-20 g

Molecules per gram1.148924 × 10^19

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 × 2759)52,415.482 g/mol, 100%

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Elements in this formula

Fluorine

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