Recognised as Colour

#FF2247

#FF2247
Red
Dark
Nearest: Crimson

#FF2247 is a red with RGB values 255, 34, 71 and HSL 350°, 100%, 57%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF2247#FF2247

HEX#FF2247

RGBrgb(255, 34, 71)

RGB (0–1)1, 0.1333, 0.2784

RGB percentages100%, 13.3%, 27.8%

HSLhsl(350, 100%, 56.7%)

HSV / HSBhsv(350, 86.7%, 100%)

CMYK0%, 86.7%, 72.2%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,720,455

CSS custom property--colour: #FF2247;

Brightness & contrast

Relative luminance0.22859WCAG 2.x, 0 is black and 1 is white

Perceived brightness143.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.57:1

Contrast with white3.77:1WCAG normal text: Fail

Contrast with black5.57:1WCAG normal text: AA

Greyscale equivalent#545454

Inverted#00DDB8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6E6646no red cones; affects about 1% of men; ΔE 83.1 from the original

Deuteranopia#A3933Fno green cones; the most common form, about 1% of men; ΔE 83.1 from the original

Tritanopia#FF0034no blue cones; rare, and affects men and women equally; ΔE 9.7 from the original

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

Contrast with white, large text3.77:1WCAG large text: AA

Contrast with black, large text5.57:1WCAG large text: AAA

Named colours

Crimson · ΔE 11.5 Tomato · ΔE 22.9 Firebrick · ΔE 27.1 Red · ΔE 29.2 Orange red · ΔE 32.6 Brown · ΔE 34.1

Nearest named CSS colourCrimson (#DC143C)ΔE 11.51, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#22FFDA

Analogous#FF22B6, #FF6B22

Triadic#47FF22, #2247FF

Split complementary#22FF6B, #22B6FF

Tetradic#B6FF22, #22FFDA, #6B22FF

Tints, shades & saturation

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

Lighter +40%#FFEEF1

Lighter +30%#FFBBC6

Lighter +20%#FF889C

Lighter +10%#FF5571

Darker −10%#EE0028

Darker −20%#BB001F

Darker −30%#880017

Darker −40%#55000E

More saturated +25%#FF2247

Less saturated −25%#E33E59

Channel breakdown

R255

G34

B71

Red255 (100%)

Green34 (13.3%)

Blue71 (27.8%)

Hue349.95°

Saturation (HSL)100%

Lightness56.67%

Dominant channelRed

Hex per channelR FF · G 22 · B 47

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF2247 (chemical formula)

Formula
42,707.504 g/mol
2248 atoms

FF2247 has a molar mass of 42,707.504 g/mol, made up of 2248 atoms across 1 element: 2248 × F.

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Molar mass

Molar mass42,707.504 g/mol

Total atoms per molecule2248

Distinct elements1

Mass of one molecule7.0917479 × 10^-20 g

Molecules per gram1.4100896 × 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

F100%

Fluorine (F × 2248)42,707.504 g/mol, 100%

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Elements in this formula

Fluorine

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