Recognised as Colour

#FF378F

#FF378F
Red
Dark
Nearest: Deep pink

#FF378F is a red with RGB values 255, 55, 143 and HSL 334°, 100%, 61%. It is a dark colour, so black text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Deep pink.

Colour values

#FF378F#FF378F

HEX#FF378F

RGBrgb(255, 55, 143)

RGB (0–1)1, 0.2157, 0.5608

RGB percentages100%, 21.6%, 56.1%

HSLhsl(333.6, 100%, 60.8%)

HSV / HSBhsv(333.6, 78.4%, 100%)

CMYK0%, 78.4%, 43.9%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,725,903

CSS custom property--colour: #FF378F;

Brightness & contrast

Relative luminance0.25976WCAG 2.x, 0 is black and 1 is white

Perceived brightness153.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.2:1

Contrast with white3.39:1WCAG normal text: Fail

Contrast with black6.2:1WCAG normal text: AA

Greyscale equivalent#686868

Inverted#00C870

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#677391no red cones; affects about 1% of men; ΔE 77.7 from the original

Deuteranopia#9D998Ano green cones; the most common form, about 1% of men; ΔE 79.8 from the original

Tritanopia#FF005Fno blue cones; rare, and affects men and women equally; ΔE 24 from the original

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

Contrast with white, large text3.39:1WCAG large text: AA

Contrast with black, large text6.2:1WCAG large text: AAA

Named colours

Deep pink · ΔE 8.8 Hot pink · ΔE 18.7 Medium violet red · ΔE 21.1 Pale violetred · ΔE 32.5 Crimson · ΔE 36.3 Indian red · ΔE 40.2

Nearest named CSS colourDeep pink (#FF1493)ΔE 8.78, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#37FFA7

Analogous#FF37F3, #FF4337

Triadic#8FFF37, #378FFF

Split complementary#37FF43, #37F3FF

Tetradic#F3FF37, #37FFA7, #4337FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFD0E5

Lighter +20%#FF9DC8

Lighter +10%#FF6AAC

Darker −10%#FF0472

Darker −20%#D0005C

Darker −30%#9D0045

Darker −40%#6A002F

More saturated +25%#FF378F

Less saturated −25%#E65092

Channel breakdown

R255

G55

B143

Red255 (100%)

Green55 (21.6%)

Blue143 (56.1%)

Hue333.6°

Saturation (HSL)100%

Lightness60.78%

Dominant channelRed

Hex per channelR FF · G 37 · B 8F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF378F (chemical formula)

Formula
7,219.24 g/mol
380 atoms

FF378F has a molar mass of 7,219.24 g/mol, made up of 380 atoms across 1 element: 380 × F.

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Molar mass

Molar mass7,219.24 g/mol

Total atoms per molecule380

Distinct elements1

Mass of one molecule1.198783 × 10^-20 g

Molecules per gram8.3417933 × 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 × 380)7,219.24 g/mol, 100%

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Elements in this formula

Fluorine

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