Recognised as Colour

#FF2B63

#FF2B63
Red
Dark
Nearest: Crimson

#FF2B63 is a red with RGB values 255, 43, 99 and HSL 344°, 100%, 58%. 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

#FF2B63#FF2B63

HEX#FF2B63

RGBrgb(255, 43, 99)

RGB (0–1)1, 0.1686, 0.3882

RGB percentages100%, 16.9%, 38.8%

HSLhsl(344.2, 100%, 58.4%)

HSV / HSBhsv(344.2, 83.1%, 100%)

CMYK0%, 83.1%, 61.2%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,722,787

CSS custom property--colour: #FF2B63;

Brightness & contrast

Relative luminance0.23889WCAG 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 5.78:1

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

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

Greyscale equivalent#5C5C5C

Inverted#00D49C

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6D6B64no red cones; affects about 1% of men; ΔE 81.1 from the original

Deuteranopia#A2955Dno green cones; the most common form, about 1% of men; ΔE 81.6 from the original

Tritanopia#FF0045no blue cones; rare, and affects men and women equally; ΔE 15.5 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

Crimson · ΔE 15.4 Deep pink · ΔE 29.5 Firebrick · ΔE 31.1 Tomato · ΔE 31.3 Indian red · ΔE 32.9 Brown · ΔE 34.3

Nearest named CSS colourCrimson (#DC143C)ΔE 15.4, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2BFFC7

Analogous#FF2BCD, #FF5D2B

Triadic#63FF2B, #2B63FF

Split complementary#2BFF5D, #2BCDFF

Tetradic#CDFF2B, #2BFFC7, #5D2BFF

Tints, shades & saturation

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

Lighter +40%#FFF7F9

Lighter +30%#FFC4D4

Lighter +20%#FF91AE

Lighter +10%#FF5E89

Darker −10%#F70041

Darker −20%#C40034

Darker −30%#910026

Darker −40%#5E0019

More saturated +25%#FF2B63

Less saturated −25%#E5466F

Channel breakdown

R255

G43

B99

Red255 (100%)

Green43 (16.9%)

Blue99 (38.8%)

Hue344.15°

Saturation (HSL)100%

Lightness58.43%

Dominant channelRed

Hex per channelR FF · G 2B · B 63

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF2B63 (chemical formula)

Formula
738.024 g/mol
66 atoms

FF2B63 has a molar mass of 738.024 g/mol, made up of 66 atoms across 2 elements: 3 × F, 63 × B.

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Molar mass

Molar mass738.024 g/mol

Total atoms per molecule66

Distinct elements2

Mass of one molecule1.2255177 × 10^-21 g

Molecules per gram8.159817 × 10^20

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

F7.7%

B92.3%

Fluorine (F × 3)56.994 g/mol, 7.723%

Boron (B × 63)681.03 g/mol, 92.277%

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