Recognised as Colour

#FF2356

#FF2356
Red
Dark
Nearest: Crimson

#FF2356 is a red with RGB values 255, 35, 86 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

#FF2356#FF2356

HEX#FF2356

RGBrgb(255, 35, 86)

RGB (0–1)1, 0.1373, 0.3373

RGB percentages100%, 13.7%, 33.7%

HSLhsl(346.1, 100%, 56.9%)

HSV / HSBhsv(346.1, 86.3%, 100%)

CMYK0%, 86.3%, 66.3%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,720,726

CSS custom property--colour: #FF2356;

Brightness & contrast

Relative luminance0.23134WCAG 2.x, 0 is black and 1 is white

Perceived brightness144.9 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#555555

Inverted#00DCA9

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6C6756no red cones; affects about 1% of men; ΔE 82.7 from the original

Deuteranopia#A2944Fno green cones; the most common form, about 1% of men; ΔE 83.3 from the original

Tritanopia#FF003Cno blue cones; rare, and affects men and women equally; ΔE 13.6 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 11.8 Tomato · ΔE 27.4 Firebrick · ΔE 28.8 Brown · ΔE 33.8 Indian red · ΔE 34.5 Salmon · ΔE 35.3

Nearest named CSS colourCrimson (#DC143C)ΔE 11.76, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#23FFCC

Analogous#FF23C4, #FF5E23

Triadic#56FF23, #2356FF

Split complementary#23FF5E, #23C4FF

Tetradic#C4FF23, #23FFCC, #5E23FF

Tints, shades & saturation

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

Lighter +40%#FFEFF3

Lighter +30%#FFBCCC

Lighter +20%#FF89A4

Lighter +10%#FF567D

Darker −10%#EF0037

Darker −20%#BC002C

Darker −30%#890020

Darker −40%#560014

More saturated +25%#FF2356

Less saturated −25%#E33E65

Channel breakdown

R255

G35

B86

Red255 (100%)

Green35 (13.7%)

Blue86 (33.7%)

Hue346.09°

Saturation (HSL)100%

Lightness56.86%

Dominant channelRed

Hex per channelR FF · G 23 · B 56

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF2356 (chemical formula)

Formula
44,778.286 g/mol
2357 atoms

FF2356 has a molar mass of 44,778.286 g/mol, made up of 2357 atoms across 1 element: 2357 × F.

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Molar mass

Molar mass44,778.286 g/mol

Total atoms per molecule2357

Distinct elements1

Mass of one molecule7.4356093 × 10^-20 g

Molecules per gram1.3448797 × 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 × 2357)44,778.286 g/mol, 100%

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Elements in this formula

Fluorine

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