Recognised as Colour

#FF2577

#FF2577
Red
Dark
Nearest: Deep pink

#FF2577 is a red with RGB values 255, 37, 119 and HSL 337°, 100%, 57%. It is a dark colour, so black text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Deep pink.

Colour values

#FF2577#FF2577

HEX#FF2577

RGBrgb(255, 37, 119)

RGB (0–1)1, 0.1451, 0.4667

RGB percentages100%, 14.5%, 46.7%

HSLhsl(337.4, 100%, 57.3%)

HSV / HSBhsv(337.4, 85.5%, 100%)

CMYK0%, 85.5%, 53.3%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,721,271

CSS custom property--colour: #FF2577;

Brightness & contrast

Relative luminance0.23915WCAG 2.x, 0 is black and 1 is white

Perceived brightness147.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.78:1

Contrast with white3.63:1WCAG normal text: Fail

Contrast with black5.78:1WCAG normal text: AA

Greyscale equivalent#595959

Inverted#00DA88

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#666B78no red cones; affects about 1% of men; ΔE 82 from the original

Deuteranopia#9E9572no green cones; the most common form, about 1% of men; ΔE 83 from the original

Tritanopia#FF004Dno blue cones; rare, and affects men and women equally; ΔE 22.4 from the original

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

Contrast with white, large text3.63:1WCAG large text: AA

Contrast with black, large text5.78:1WCAG large text: AAA

Named colours

Deep pink · ΔE 17.4 Crimson · ΔE 25.9 Hot pink · ΔE 28.4 Medium violet red · ΔE 29.9 Pale violetred · ΔE 36.4 Indian red · ΔE 37

Nearest named CSS colourDeep pink (#FF1493)ΔE 17.37, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#25FFAD

Analogous#FF25E4, #FF4025

Triadic#77FF25, #2577FF

Split complementary#25FF40, #25E4FF

Tetradic#E4FF25, #25FFAD, #4025FF

Tints, shades & saturation

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

Lighter +40%#FFF1F6

Lighter +30%#FFBED6

Lighter +20%#FF8BB7

Lighter +10%#FF5897

Darker −10%#F1005B

Darker −20%#BE0047

Darker −30%#8B0034

Darker −40%#580021

More saturated +25%#FF2577

Less saturated −25%#E4407E

Channel breakdown

R255

G37

B119

Red255 (100%)

Green37 (14.5%)

Blue119 (46.7%)

Hue337.43°

Saturation (HSL)100%

Lightness57.25%

Dominant channelRed

Hex per channelR FF · G 25 · B 77

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF2577 (chemical formula)

Formula
48,976.844 g/mol
2578 atoms

FF2577 has a molar mass of 48,976.844 g/mol, made up of 2578 atoms across 1 element: 2578 × F.

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Molar mass

Molar mass48,976.844 g/mol

Total atoms per molecule2578

Distinct elements1

Mass of one molecule8.1327963 × 10^-20 g

Molecules per gram1.2295894 × 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 × 2578)48,976.844 g/mol, 100%

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Elements in this formula

Fluorine

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