Recognised as Colour

#FF245B

#FF245B
Red
Dark
Nearest: Crimson

#FF245B is a red with RGB values 255, 36, 91 and HSL 345°, 100%, 57%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF245B#FF245B

HEX#FF245B

RGBrgb(255, 36, 91)

RGB (0–1)1, 0.1412, 0.3569

RGB percentages100%, 14.1%, 35.7%

HSLhsl(344.9, 100%, 57.1%)

HSV / HSBhsv(344.9, 85.9%, 100%)

CMYK0%, 85.9%, 64.3%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,720,987

CSS custom property--colour: #FF245B;

Brightness & contrast

Relative luminance0.23277WCAG 2.x, 0 is black and 1 is white

Perceived brightness145.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.66:1

Contrast with white3.71:1WCAG normal text: Fail

Contrast with black5.66:1WCAG normal text: AA

Greyscale equivalent#575757

Inverted#00DBA4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6C685Bno red cones; affects about 1% of men; ΔE 82.4 from the original

Deuteranopia#A19455no green cones; the most common form, about 1% of men; ΔE 83.2 from the original

Tritanopia#FF003Eno blue cones; rare, and affects men and women equally; ΔE 15.2 from the original

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

Contrast with white, large text3.71:1WCAG large text: AA

Contrast with black, large text5.66:1WCAG large text: AAA

Named colours

Crimson · ΔE 13.1 Tomato · ΔE 29.2 Firebrick · ΔE 29.8 Deep pink · ΔE 33.2 Indian red · ΔE 34.1 Brown · ΔE 34.1

Nearest named CSS colourCrimson (#DC143C)ΔE 13.09, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#24FFC8

Analogous#FF24C9, #FF5A24

Triadic#5BFF24, #245BFF

Split complementary#24FF5A, #24C9FF

Tetradic#C9FF24, #24FFC8, #5A24FF

Tints, shades & saturation

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

Lighter +40%#FFF0F4

Lighter +30%#FFBDCE

Lighter +20%#FF8AA7

Lighter +10%#FF5781

Darker −10%#F0003C

Darker −20%#BD002F

Darker −30%#8A0023

Darker −40%#570016

More saturated +25%#FF245B

Less saturated −25%#E43F69

Channel breakdown

R255

G36

B91

Red255 (100%)

Green36 (14.1%)

Blue91 (35.7%)

Hue344.93°

Saturation (HSL)100%

Lightness57.06%

Dominant channelRed

Hex per channelR FF · G 24 · B 5B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF245B (chemical formula)

Formula
4,684.318 g/mol
247 atoms

FF245B has a molar mass of 4,684.318 g/mol, made up of 247 atoms across 2 elements: 246 × F, 1 × B.

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Molar mass

Molar mass4,684.318 g/mol

Total atoms per molecule247

Distinct elements2

Mass of one molecule7.778493 × 10^-21 g

Molecules per gram1.2855961 × 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

F99.8%

B0.2%

Fluorine (F × 246)4,673.508 g/mol, 99.769%

Boron (B)10.81 g/mol, 0.231%

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Elements in this formula

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