Recognised as Colour

#FF2940

#FF2940
Red
Dark
Nearest: Crimson

#FF2940 is a red with RGB values 255, 41, 64 and HSL 354°, 100%, 58%. 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

#FF2940#FF2940

HEX#FF2940

RGBrgb(255, 41, 64)

RGB (0–1)1, 0.1608, 0.251

RGB percentages100%, 16.1%, 25.1%

HSLhsl(353.6, 100%, 58%)

HSV / HSBhsv(353.6, 83.9%, 100%)

CMYK0%, 83.9%, 74.9%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,722,240

CSS custom property--colour: #FF2940;

Brightness & contrast

Relative luminance0.23216WCAG 2.x, 0 is black and 1 is white

Perceived brightness144.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.64:1

Contrast with white3.72:1WCAG normal text: Fail

Contrast with black5.64:1WCAG normal text: AA

Greyscale equivalent#585858

Inverted#00D6BF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#71673Fno red cones; affects about 1% of men; ΔE 81.7 from the original

Deuteranopia#A59437no green cones; the most common form, about 1% of men; ΔE 81.7 from the original

Tritanopia#FF0035no blue cones; rare, and affects men and women equally; ΔE 6.4 from the original

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

Contrast with white, large text3.72:1WCAG large text: AA

Contrast with black, large text5.64:1WCAG large text: AAA

Named colours

Crimson · ΔE 13.4 Tomato · ΔE 20.2 Red · ΔE 25 Firebrick · ΔE 26.6 Orange red · ΔE 27.9 Coral · ΔE 33.6

Nearest named CSS colourCrimson (#DC143C)ΔE 13.35, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#29FFE8

Analogous#FF29AB, #FF7D29

Triadic#40FF29, #2940FF

Split complementary#29FF7D, #29ABFF

Tetradic#ABFF29, #29FFE8, #7D29FF

Tints, shades & saturation

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

Lighter +40%#FFF5F6

Lighter +30%#FFC2C9

Lighter +20%#FF8F9B

Lighter +10%#FF5C6E

Darker −10%#F5001A

Darker −20%#C20015

Darker −30%#8F000F

Darker −40%#5C000A

More saturated +25%#FF2940

Less saturated −25%#E44455

Channel breakdown

R255

G41

B64

Red255 (100%)

Green41 (16.1%)

Blue64 (25.1%)

Hue353.55°

Saturation (HSL)100%

Lightness58.04%

Dominant channelRed

Hex per channelR FF · G 29 · B 40

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF2940 (chemical formula)

Formula
55,873.118 g/mol
2941 atoms

FF2940 has a molar mass of 55,873.118 g/mol, made up of 2941 atoms across 1 element: 2941 × F.

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Molar mass

Molar mass55,873.118 g/mol

Total atoms per molecule2941

Distinct elements1

Mass of one molecule9.2779495 × 10^-20 g

Molecules per gram1.0778244 × 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 × 2941)55,873.118 g/mol, 100%

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Elements in this formula

Fluorine

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