Recognised as Colour

#FF2358

#FF2358
Red
Dark
Nearest: Crimson

#FF2358 is a red with RGB values 255, 35, 88 and HSL 346°, 100%, 57%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF2358#FF2358

HEX#FF2358

RGBrgb(255, 35, 88)

RGB (0–1)1, 0.1373, 0.3451

RGB percentages100%, 13.7%, 34.5%

HSLhsl(345.5, 100%, 56.9%)

HSV / HSBhsv(345.5, 86.3%, 100%)

CMYK0%, 86.3%, 65.5%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,720,728

CSS custom property--colour: #FF2358;

Brightness & contrast

Relative luminance0.23167WCAG 2.x, 0 is black and 1 is white

Perceived brightness145.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.63:1

Contrast with white3.73:1WCAG normal text: Fail

Contrast with black5.63:1WCAG normal text: AA

Greyscale equivalent#565656

Inverted#00DCA7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6C6858no red cones; affects about 1% of men; ΔE 82.9 from the original

Deuteranopia#A29452no green cones; the most common form, about 1% of men; ΔE 83.1 from the original

Tritanopia#FF003Dno blue cones; rare, and affects men and women equally; ΔE 14.1 from the original

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

Contrast with white, large text3.73:1WCAG large text: AA

Contrast with black, large text5.63:1WCAG large text: AAA

Named colours

Crimson · ΔE 12.3 Tomato · ΔE 28.2 Firebrick · ΔE 29.2 Brown · ΔE 33.9 Indian red · ΔE 34.4 Deep pink · ΔE 34.8

Nearest named CSS colourCrimson (#DC143C)ΔE 12.27, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#23FFCA

Analogous#FF23C6, #FF5C23

Triadic#58FF23, #2358FF

Split complementary#23FF5C, #23C6FF

Tetradic#C6FF23, #23FFCA, #5C23FF

Tints, shades & saturation

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

Lighter +40%#FFEFF3

Lighter +30%#FFBCCC

Lighter +20%#FF89A5

Lighter +10%#FF567F

Darker −10%#EF003A

Darker −20%#BC002D

Darker −30%#890021

Darker −40%#560015

More saturated +25%#FF2358

Less saturated −25%#E33E66

Channel breakdown

R255

G35

B88

Red255 (100%)

Green35 (13.7%)

Blue88 (34.5%)

Hue345.55°

Saturation (HSL)100%

Lightness56.86%

Dominant channelRed

Hex per channelR FF · G 23 · B 58

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF2358 (chemical formula)

Formula
44,816.282 g/mol
2359 atoms

FF2358 has a molar mass of 44,816.282 g/mol, made up of 2359 atoms across 1 element: 2359 × F.

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Molar mass

Molar mass44,816.282 g/mol

Total atoms per molecule2359

Distinct elements1

Mass of one molecule7.4419187 × 10^-20 g

Molecules per gram1.3437395 × 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 × 2359)44,816.282 g/mol, 100%

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Elements in this formula

Fluorine

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