Recognised as Colour

#FF5866

#FF5866
Red
Dark
Nearest: Crimson

#FF5866 is a red with RGB values 255, 88, 102 and HSL 355°, 100%, 67%. It is a dark colour, so black text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF5866#FF5866

HEX#FF5866

RGBrgb(255, 88, 102)

RGB (0–1)1, 0.3451, 0.4

RGB percentages100%, 34.5%, 40%

HSLhsl(355, 100%, 67.3%)

HSV / HSBhsv(355, 65.5%, 100%)

CMYK0%, 65.5%, 60%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,734,310

CSS custom property--colour: #FF5866;

Brightness & contrast

Relative luminance0.29199WCAG 2.x, 0 is black and 1 is white

Perceived brightness158.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.84:1

Contrast with white3.07:1WCAG normal text: Fail

Contrast with black6.84:1WCAG normal text: AA

Greyscale equivalent#7D7D7D

Inverted#00A799

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#837D65no red cones; affects about 1% of men; ΔE 67.9 from the original

Deuteranopia#AEA062no green cones; the most common form, about 1% of men; ΔE 68.3 from the original

Tritanopia#FF325Eno blue cones; rare, and affects men and women equally; ΔE 12.6 from the original

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

Contrast with white, large text3.07:1WCAG large text: AA

Contrast with black, large text6.84:1WCAG large text: AAA

Named colours

Crimson · ΔE 16.6 Tomato · ΔE 19.7 Salmon · ΔE 19.9 Indian red · ΔE 21.4 Light coral · ΔE 23.3 Firebrick · ΔE 25.3

Nearest named CSS colourCrimson (#DC143C)ΔE 16.6, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#58FFF1

Analogous#FF58BA, #FF9E58

Triadic#66FF58, #5866FF

Split complementary#58FF9E, #58B9FF

Tetradic#B9FF58, #58FFF1, #9E58FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFF1F2

Lighter +20%#FFBEC3

Lighter +10%#FF8B95

Darker −10%#FF2537

Darker −20%#F10014

Darker −30%#BE0010

Darker −40%#8B000C

More saturated +25%#FF5866

Less saturated −25%#EA6D77

Channel breakdown

R255

G88

B102

Red255 (100%)

Green88 (34.5%)

Blue102 (40%)

Hue354.97°

Saturation (HSL)100%

Lightness67.25%

Dominant channelRed

Hex per channelR FF · G 58 · B 66

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF5866 (chemical formula)

Formula
111,461.266 g/mol
5867 atoms

FF5866 has a molar mass of 111,461.266 g/mol, made up of 5867 atoms across 1 element: 5867 × F.

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Molar mass

Molar mass111,461.266 g/mol

Total atoms per molecule5867

Distinct elements1

Mass of one molecule1.8508579 × 10^-19 g

Molecules per gram5.4029 × 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 × 5867)111,461.266 g/mol, 100%

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Elements in this formula

Fluorine

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