Recognised as Colour

#FB4F6B

#FB4F6B
Red
Dark
Nearest: Crimson

#FB4F6B is a red with RGB values 251, 79, 107 and HSL 350°, 96%, 65%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FB4F6B#FB4F6B

HEX#FB4F6B

RGBrgb(251, 79, 107)

RGB (0–1)0.9843, 0.3098, 0.4196

RGB percentages98.4%, 31%, 42%

HSLhsl(350.2, 95.6%, 64.7%)

HSV / HSBhsv(350.2, 68.5%, 98.4%)

CMYK0%, 68.5%, 57.4%, 1.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,469,867

CSS custom property--colour: #FB4F6B;

Brightness & contrast

Relative luminance0.27163WCAG 2.x, 0 is black and 1 is white

Perceived brightness154.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.43:1

Contrast with white3.26:1WCAG normal text: Fail

Contrast with black6.43:1WCAG normal text: AA

Greyscale equivalent#767676

Inverted#04B094

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7B786Bno red cones; affects about 1% of men; ΔE 70 from the original

Deuteranopia#A79B67no green cones; the most common form, about 1% of men; ΔE 70.4 from the original

Tritanopia#FF255Ano blue cones; rare, and affects men and women equally; ΔE 13.4 from the original

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

Contrast with white, large text3.26:1WCAG large text: AA

Contrast with black, large text6.43:1WCAG large text: AAA

Named colours

Crimson · ΔE 17.1 Indian red · ΔE 22.5 Salmon · ΔE 23.8 Light coral · ΔE 24.9 Tomato · ΔE 25.8 Firebrick · ΔE 27.4

Nearest named CSS colourCrimson (#DC143C)ΔE 17.1, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#4FFBDF

Analogous#FB4FC1, #FB894F

Triadic#6BFB4F, #4F6BFB

Split complementary#4FFB89, #4FC1FB

Tetradic#C1FB4F, #4FFBDF, #894FFB

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FEE5E9

Lighter +20%#FDB3BF

Lighter +10%#FC8195

Darker −10%#FA1D41

Darker −20%#DF0529

Darker −30%#AD041F

Darker −40%#7B0316

More saturated +25%#FF4B68

Less saturated −25%#E4667A

Channel breakdown

R251

G79

B107

Red251 (98.4%)

Green79 (31%)

Blue107 (42%)

Hue350.23°

Saturation (HSL)95.56%

Lightness64.71%

Dominant channelRed

Hex per channelR FB · G 4F · B 6B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FB4F6B (chemical formula)

Formula
187.036 g/mol
12 atoms

FB4F6B has a molar mass of 187.036 g/mol, made up of 12 atoms across 2 elements: 7 × F, 5 × B.

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Molar mass

Molar mass187.036 g/mol

Total atoms per molecule12

Distinct elements2

Mass of one molecule3.1058058 × 10^-22 g

Molecules per gram3.2197763 × 10^21

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

F71.1%

B28.9%

Fluorine (F × 7)132.986 g/mol, 71.102%

Boron (B × 5)54.05 g/mol, 28.898%

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Elements in this formula

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