Recognised as Colour

#FF5781

#FF5781
Red
Dark
Nearest: Hot pink

#FF5781 is a red with RGB values 255, 87, 129 and HSL 345°, 100%, 67%. It is a dark colour, so black text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Hot pink.

Colour values

#FF5781#FF5781

HEX#FF5781

RGBrgb(255, 87, 129)

RGB (0–1)1, 0.3412, 0.5059

RGB percentages100%, 34.1%, 50.6%

HSLhsl(345, 100%, 67.1%)

HSV / HSBhsv(345, 65.9%, 100%)

CMYK0%, 65.9%, 49.4%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,734,081

CSS custom property--colour: #FF5781;

Brightness & contrast

Relative luminance0.29661WCAG 2.x, 0 is black and 1 is white

Perceived brightness160.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.93:1

Contrast with white3.03:1WCAG normal text: Fail

Contrast with black6.93:1WCAG normal text: AA

Greyscale equivalent#7E7E7E

Inverted#00A87E

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7E7F82no red cones; affects about 1% of men; ΔE 68.2 from the original

Deuteranopia#A9A17Dno green cones; the most common form, about 1% of men; ΔE 69.9 from the original

Tritanopia#FF3A68no blue cones; rare, and affects men and women equally; ΔE 12.7 from the original

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

Contrast with white, large text3.03:1WCAG large text: AA

Contrast with black, large text6.93:1WCAG large text: AAA

Named colours

Hot pink · ΔE 23.8 Pale violetred · ΔE 24.2 Indian red · ΔE 24.8 Light coral · ΔE 25 Crimson · ΔE 25.7 Deep pink · ΔE 26.4

Nearest named CSS colourHot pink (#FF69B4)ΔE 23.8, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#57FFD5

Analogous#FF57D5, #FF8157

Triadic#81FF57, #5781FF

Split complementary#57FF81, #57D5FF

Tetradic#D5FF57, #57FFD5, #8157FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFF0F4

Lighter +20%#FFBDCE

Lighter +10%#FF8AA7

Darker −10%#FF245B

Darker −20%#F0003C

Darker −30%#BD002F

Darker −40%#8A0023

More saturated +25%#FF5781

Less saturated −25%#EA6C8C

Channel breakdown

R255

G87

B129

Red255 (100%)

Green87 (34.1%)

Blue129 (50.6%)

Hue345°

Saturation (HSL)100%

Lightness67.06%

Dominant channelRed

Hex per channelR FF · G 57 · B 81

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Harmonies

Lighter and darker

Similar named colours

Also reads as

FF5781 (chemical formula)

Formula
109,846.436 g/mol
5782 atoms

FF5781 has a molar mass of 109,846.436 g/mol, made up of 5782 atoms across 1 element: 5782 × F.

Open this reading on its own page →

Molar mass

Molar mass109,846.436 g/mol

Total atoms per molecule5782

Distinct elements1

Mass of one molecule1.824043 × 10^-19 g

Molecules per gram5.4823269 × 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 × 5782)109,846.436 g/mol, 100%

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Elements in this formula

Fluorine

Nerdulate something else

Nothing in mind? Surprise me · today’s page