Recognised as Colour

#FF2640

#FF2640
Red
Dark
Nearest: Crimson

#FF2640 is a red with RGB values 255, 38, 64 and HSL 353°, 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

#FF2640#FF2640

HEX#FF2640

RGBrgb(255, 38, 64)

RGB (0–1)1, 0.149, 0.251

RGB percentages100%, 14.9%, 25.1%

HSLhsl(352.8, 100%, 57.5%)

HSV / HSBhsv(352.8, 85.1%, 100%)

CMYK0%, 85.1%, 74.9%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,721,472

CSS custom property--colour: #FF2640;

Brightness & contrast

Relative luminance0.23016WCAG 2.x, 0 is black and 1 is white

Perceived brightness144.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.6:1

Contrast with white3.75:1WCAG normal text: Fail

Contrast with black5.6:1WCAG normal text: AA

Greyscale equivalent#565656

Inverted#00D9BF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#70673Fno red cones; affects about 1% of men; ΔE 82.6 from the original

Deuteranopia#A49437no green cones; the most common form, about 1% of men; ΔE 82.8 from the original

Tritanopia#FF0033no blue cones; rare, and affects men and women equally; ΔE 6.9 from the original

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

Contrast with white, large text3.75:1WCAG large text: AA

Contrast with black, large text5.6:1WCAG large text: AAA

Named colours

Crimson · ΔE 13.3 Tomato · ΔE 20.8 Red · ΔE 25.1 Firebrick · ΔE 26.8 Orange red · ΔE 28.3 Coral · ΔE 34.3

Nearest named CSS colourCrimson (#DC143C)ΔE 13.33, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#26FFE5

Analogous#FF26AD, #FF7826

Triadic#40FF26, #2640FF

Split complementary#26FF78, #26ADFF

Tetradic#ADFF26, #26FFE5, #7826FF

Tints, shades & saturation

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

Lighter +40%#FFF2F4

Lighter +30%#FFBFC7

Lighter +20%#FF8C9A

Lighter +10%#FF596D

Darker −10%#F2001D

Darker −20%#BF0017

Darker −30%#8C0011

Darker −40%#59000B

More saturated +25%#FF2640

Less saturated −25%#E44155

Channel breakdown

R255

G38

B64

Red255 (100%)

Green38 (14.9%)

Blue64 (25.1%)

Hue352.81°

Saturation (HSL)100%

Lightness57.45%

Dominant channelRed

Hex per channelR FF · G 26 · B 40

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Harmonies

Lighter and darker

Similar named colours

Also reads as

FF2640 (chemical formula)

Formula
50,173.718 g/mol
2641 atoms

FF2640 has a molar mass of 50,173.718 g/mol, made up of 2641 atoms across 1 element: 2641 × F.

Open this reading on its own page →

Molar mass

Molar mass50,173.718 g/mol

Total atoms per molecule2641

Distinct elements1

Mass of one molecule8.3315419 × 10^-20 g

Molecules per gram1.200258 × 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 × 2641)50,173.718 g/mol, 100%

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Elements in this formula

Fluorine

Nerdulate something else

Nothing in mind? Surprise me · today’s page