Recognised as Colour

#FF2136

#FF2136
Red
Dark
Nearest: Crimson

#FF2136 is a red with RGB values 255, 33, 54 and HSL 354°, 100%, 56%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF2136#FF2136

HEX#FF2136

RGBrgb(255, 33, 54)

RGB (0–1)1, 0.1294, 0.2118

RGB percentages100%, 12.9%, 21.2%

HSLhsl(354.3, 100%, 56.5%)

HSV / HSBhsv(354.3, 87.1%, 100%)

CMYK0%, 87.1%, 78.8%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,720,182

CSS custom property--colour: #FF2136;

Brightness & contrast

Relative luminance0.22614WCAG 2.x, 0 is black and 1 is white

Perceived brightness142.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.52:1

Contrast with white3.8:1WCAG normal text: Fail

Contrast with black5.52:1WCAG normal text: AA

Greyscale equivalent#525252

Inverted#00DEC9

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#706534no red cones; affects about 1% of men; ΔE 83.2 from the original

Deuteranopia#A4932Bno green cones; the most common form, about 1% of men; ΔE 83.4 from the original

Tritanopia#FF002Dno blue cones; rare, and affects men and women equally; ΔE 4.9 from the original

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

Contrast with white, large text3.8:1WCAG large text: AA

Contrast with black, large text5.52:1WCAG large text: AAA

Named colours

Crimson · ΔE 17.1 Red · ΔE 20 Tomato · ΔE 21.1 Orange red · ΔE 23.9 Firebrick · ΔE 28.4 Coral · ΔE 34.6

Nearest named CSS colourCrimson (#DC143C)ΔE 17.11, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#21FFEA

Analogous#FF21A5, #FF7B21

Triadic#36FF21, #2136FF

Split complementary#21FF7B, #21A5FF

Tetradic#A5FF21, #21FFEA, #7B21FF

Tints, shades & saturation

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

Lighter +40%#FFEDEF

Lighter +30%#FFBAC1

Lighter +20%#FF8792

Lighter +10%#FF5464

Darker −10%#ED0016

Darker −20%#BA0012

Darker −30%#87000D

Darker −40%#540008

More saturated +25%#FF2136

Less saturated −25%#E33D4C

Channel breakdown

R255

G33

B54

Red255 (100%)

Green33 (12.9%)

Blue54 (21.2%)

Hue354.32°

Saturation (HSL)100%

Lightness56.47%

Dominant channelRed

Hex per channelR FF · G 21 · B 36

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF2136 (chemical formula)

Formula
40,598.726 g/mol
2137 atoms

FF2136 has a molar mass of 40,598.726 g/mol, made up of 2137 atoms across 1 element: 2137 × F.

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Molar mass

Molar mass40,598.726 g/mol

Total atoms per molecule2137

Distinct elements1

Mass of one molecule6.7415771 × 10^-20 g

Molecules per gram1.4833324 × 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 × 2137)40,598.726 g/mol, 100%

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Elements in this formula

Fluorine

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