Recognised as Colour

#FF4381

#FF4381
Red
Dark
Nearest: Deep pink

#FF4381 is a red with RGB values 255, 67, 129 and HSL 340°, 100%, 63%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Deep pink.

Colour values

#FF4381#FF4381

HEX#FF4381

RGBrgb(255, 67, 129)

RGB (0–1)1, 0.2627, 0.5059

RGB percentages100%, 26.3%, 50.6%

HSLhsl(340.2, 100%, 63.1%)

HSV / HSBhsv(340.2, 73.7%, 100%)

CMYK0%, 73.7%, 49.4%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,728,961

CSS custom property--colour: #FF4381;

Brightness & contrast

Relative luminance0.26859WCAG 2.x, 0 is black and 1 is white

Perceived brightness154.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.37:1

Contrast with white3.3:1WCAG normal text: Fail

Contrast with black6.37:1WCAG normal text: AA

Greyscale equivalent#6F6F6F

Inverted#00BC7E

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#717682no red cones; affects about 1% of men; ΔE 75 from the original

Deuteranopia#A39B7Cno green cones; the most common form, about 1% of men; ΔE 76.2 from the original

Tritanopia#FF125Dno blue cones; rare, and affects men and women equally; ΔE 17.9 from the original

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

Contrast with white, large text3.3:1WCAG large text: AA

Contrast with black, large text6.37:1WCAG large text: AAA

Named colours

Deep pink · ΔE 18.8 Hot pink · ΔE 22.8 Crimson · ΔE 27.3 Medium violet red · ΔE 28.2 Pale violetred · ΔE 29.2 Indian red · ΔE 31.8

Nearest named CSS colourDeep pink (#FF1493)ΔE 18.81, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#43FFC1

Analogous#FF43DF, #FF6343

Triadic#81FF43, #4381FF

Split complementary#43FF63, #43DFFF

Tetradic#DFFF43, #43FFC1, #6343FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFDCE8

Lighter +20%#FFA9C5

Lighter +10%#FF76A3

Darker −10%#FF105F

Darker −20%#DC0049

Darker −30%#A90038

Darker −40%#760027

More saturated +25%#FF4381

Less saturated −25%#E85A89

Channel breakdown

R255

G67

B129

Red255 (100%)

Green67 (26.3%)

Blue129 (50.6%)

Hue340.21°

Saturation (HSL)100%

Lightness63.14%

Dominant channelRed

Hex per channelR FF · G 43 · B 81

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF4381 (chemical formula)

Formula
83,249.236 g/mol
4382 atoms

FF4381 has a molar mass of 83,249.236 g/mol, made up of 4382 atoms across 1 element: 4382 × F.

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Molar mass

Molar mass83,249.236 g/mol

Total atoms per molecule4382

Distinct elements1

Mass of one molecule1.3823861 × 10^-19 g

Molecules per gram7.2338691 × 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 × 4382)83,249.236 g/mol, 100%

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Elements in this formula

Fluorine

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