Recognised as Colour

#FB3662

#FB3662
Red
Dark
Nearest: Crimson

#FB3662 is a red with RGB values 251, 54, 98 and HSL 347°, 96%, 60%. It is a dark colour, so black text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FB3662#FB3662

HEX#FB3662

RGBrgb(251, 54, 98)

RGB (0–1)0.9843, 0.2118, 0.3843

RGB percentages98.4%, 21.2%, 38.4%

HSLhsl(346.6, 96.1%, 59.8%)

HSV / HSBhsv(346.6, 78.5%, 98.4%)

CMYK0%, 78.5%, 61%, 1.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,463,458

CSS custom property--colour: #FB3662;

Brightness & contrast

Relative luminance0.24029WCAG 2.x, 0 is black and 1 is white

Perceived brightness147.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.81:1

Contrast with white3.62:1WCAG normal text: Fail

Contrast with black5.81:1WCAG normal text: AA

Greyscale equivalent#636363

Inverted#04C99D

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#706D62no red cones; affects about 1% of men; ΔE 77.4 from the original

Deuteranopia#A1955Dno green cones; the most common form, about 1% of men; ΔE 78.3 from the original

Tritanopia#FF0049no blue cones; rare, and affects men and women equally; ΔE 14.4 from the original

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

Contrast with white, large text3.62:1WCAG large text: AA

Contrast with black, large text5.81:1WCAG large text: AAA

Named colours

Crimson · ΔE 13.8 Firebrick · ΔE 28.4 Tomato · ΔE 28.5 Indian red · ΔE 29.2 Deep pink · ΔE 31.2 Salmon · ΔE 31.2

Nearest named CSS colourCrimson (#DC143C)ΔE 13.82, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#36FBCF

Analogous#FB36C4, #FB6D36

Triadic#62FB36, #3662FB

Split complementary#36FB6D, #36C4FB

Tetradic#C4FB36, #36FBCF, #6D36FB

Tints, shades & saturation

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

Lighter +40%#FFFEFE

Lighter +30%#FECCD7

Lighter +20%#FD9AB0

Lighter +10%#FC6889

Darker −10%#F9053B

Darker −20%#C70430

Darker −30%#950324

Darker −40%#630218

More saturated +25%#FF3260

Less saturated −25%#E15070

Channel breakdown

R251

G54

B98

Red251 (98.4%)

Green54 (21.2%)

Blue98 (38.4%)

Hue346.6°

Saturation (HSL)96.1%

Lightness59.8%

Dominant channelRed

Hex per channelR FB · G 36 · B 62

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FB3662 (chemical formula)

Formula
39,605.218 g/mol
3663 atoms

FB3662 has a molar mass of 39,605.218 g/mol, made up of 3663 atoms across 2 elements: 1 × F, 3662 × B.

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Molar mass

Molar mass39,605.218 g/mol

Total atoms per molecule3663

Distinct elements2

Mass of one molecule6.5766012 × 10^-20 g

Molecules per gram1.5205423 × 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

F0%

B100%

Fluorine (F)18.998 g/mol, 0.048%

Boron (B × 3662)39,586.22 g/mol, 99.952%

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