Recognised as Colour

#FF356B

#FF356B
Red
Dark
Nearest: Crimson

#FF356B is a red with RGB values 255, 53, 107 and HSL 344°, 100%, 60%. It is a dark colour, so black text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF356B#FF356B

HEX#FF356B

RGBrgb(255, 53, 107)

RGB (0–1)1, 0.2078, 0.4196

RGB percentages100%, 20.8%, 42%

HSLhsl(344, 100%, 60.4%)

HSV / HSBhsv(344, 79.2%, 100%)

CMYK0%, 79.2%, 58%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,725,355

CSS custom property--colour: #FF356B;

Brightness & contrast

Relative luminance0.24868WCAG 2.x, 0 is black and 1 is white

Perceived brightness149.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.97:1

Contrast with white3.52:1WCAG normal text: Fail

Contrast with black5.97:1WCAG normal text: AA

Greyscale equivalent#646464

Inverted#00CA94

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6F6E6Cno red cones; affects about 1% of men; ΔE 78.6 from the original

Deuteranopia#A39766no green cones; the most common form, about 1% of men; ΔE 79.3 from the original

Tritanopia#FF004Dno blue cones; rare, and affects men and women equally; ΔE 15.3 from the original

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

Contrast with white, large text3.52:1WCAG large text: AA

Contrast with black, large text5.97:1WCAG large text: AAA

Named colours

Crimson · ΔE 17.9 Deep pink · ΔE 26.7 Indian red · ΔE 31.2 Firebrick · ΔE 32.2 Tomato · ΔE 32.7 Hot pink · ΔE 33.4

Nearest named CSS colourCrimson (#DC143C)ΔE 17.88, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#35FFC9

Analogous#FF35D0, #FF6435

Triadic#6BFF35, #356BFF

Split complementary#35FF64, #35D0FF

Tetradic#D0FF35, #35FFC9, #6435FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFCEDB

Lighter +20%#FF9BB6

Lighter +10%#FF6890

Darker −10%#FF0246

Darker −20%#CE0037

Darker −30%#9B0029

Darker −40%#68001C

More saturated +25%#FF356B

Less saturated −25%#E64E77

Channel breakdown

R255

G53

B107

Red255 (100%)

Green53 (20.8%)

Blue107 (42%)

Hue343.96°

Saturation (HSL)100%

Lightness60.39%

Dominant channelRed

Hex per channelR FF · G 35 · B 6B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF356B (chemical formula)

Formula
6,793.096 g/mol
358 atoms

FF356B has a molar mass of 6,793.096 g/mol, made up of 358 atoms across 2 elements: 357 × F, 1 × B.

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Molar mass

Molar mass6,793.096 g/mol

Total atoms per molecule358

Distinct elements2

Mass of one molecule1.1280201 × 10^-20 g

Molecules per gram8.86509 × 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

F99.8%

B0.2%

Fluorine (F × 357)6,782.286 g/mol, 99.841%

Boron (B)10.81 g/mol, 0.159%

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