Recognised as Colour

#FF3780

#FF3780
Red
Dark
Nearest: Deep pink

#FF3780 is a red with RGB values 255, 55, 128 and HSL 338°, 100%, 61%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Deep pink.

Colour values

#FF3780#FF3780

HEX#FF3780

RGBrgb(255, 55, 128)

RGB (0–1)1, 0.2157, 0.502

RGB percentages100%, 21.6%, 50.2%

HSLhsl(338.1, 100%, 60.8%)

HSV / HSBhsv(338.1, 78.4%, 100%)

CMYK0%, 78.4%, 49.8%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,725,888

CSS custom property--colour: #FF3780;

Brightness & contrast

Relative luminance0.25551WCAG 2.x, 0 is black and 1 is white

Perceived brightness151.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.11:1

Contrast with white3.44:1WCAG normal text: Fail

Contrast with black6.11:1WCAG normal text: AA

Greyscale equivalent#676767

Inverted#00C87F

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6B7181no red cones; affects about 1% of men; ΔE 78 from the original

Deuteranopia#A0987Bno green cones; the most common form, about 1% of men; ΔE 79.2 from the original

Tritanopia#FF0058no blue cones; rare, and affects men and women equally; ΔE 20.1 from the original

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

Contrast with white, large text3.44:1WCAG large text: AA

Contrast with black, large text6.11:1WCAG large text: AAA

Named colours

Deep pink · ΔE 15.9 Hot pink · ΔE 23.8 Medium violet red · ΔE 27.1 Crimson · ΔE 28.3 Pale violetred · ΔE 32.2 Indian red · ΔE 35.1

Nearest named CSS colourDeep pink (#FF1493)ΔE 15.86, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#37FFB6

Analogous#FF37E4, #FF5237

Triadic#80FF37, #3780FF

Split complementary#37FF52, #37E4FF

Tetradic#E4FF37, #37FFB6, #5237FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFD0E1

Lighter +20%#FF9DC1

Lighter +10%#FF6AA0

Darker −10%#FF0460

Darker −20%#D0004C

Darker −30%#9D0039

Darker −40%#6A0027

More saturated +25%#FF3780

Less saturated −25%#E65087

Channel breakdown

R255

G55

B128

Red255 (100%)

Green55 (21.6%)

Blue128 (50.2%)

Hue338.1°

Saturation (HSL)100%

Lightness60.78%

Dominant channelRed

Hex per channelR FF · G 37 · B 80

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF3780 (chemical formula)

Formula
71,831.438 g/mol
3781 atoms

FF3780 has a molar mass of 71,831.438 g/mol, made up of 3781 atoms across 1 element: 3781 × F.

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Molar mass

Molar mass71,831.438 g/mol

Total atoms per molecule3781

Distinct elements1

Mass of one molecule1.1927891 × 10^-19 g

Molecules per gram8.3837118 × 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 × 3781)71,831.438 g/mol, 100%

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Elements in this formula

Fluorine

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