Recognised as Colour

#FF3855

#FF3855
Red
Dark
Nearest: Crimson

#FF3855 is a red with RGB values 255, 56, 85 and HSL 351°, 100%, 61%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF3855#FF3855

HEX#FF3855

RGBrgb(255, 56, 85)

RGB (0–1)1, 0.2196, 0.3333

RGB percentages100%, 22%, 33.3%

HSLhsl(351.3, 100%, 61%)

HSV / HSBhsv(351.3, 78%, 100%)

CMYK0%, 78%, 66.7%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,726,101

CSS custom property--colour: #FF3855;

Brightness & contrast

Relative luminance0.24744WCAG 2.x, 0 is black and 1 is white

Perceived brightness148.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.95:1

Contrast with white3.53:1WCAG normal text: Fail

Contrast with black5.95:1WCAG normal text: AA

Greyscale equivalent#646464

Inverted#00C7AA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#746E55no red cones; affects about 1% of men; ΔE 78.5 from the original

Deuteranopia#A6974Fno green cones; the most common form, about 1% of men; ΔE 78.4 from the original

Tritanopia#FF0045no blue cones; rare, and affects men and women equally; ΔE 9.9 from the original

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

Contrast with white, large text3.53:1WCAG large text: AA

Contrast with black, large text5.95:1WCAG large text: AAA

Named colours

Crimson · ΔE 10.3 Tomato · ΔE 21.9 Firebrick · ΔE 25.7 Salmon · ΔE 30.5 Indian red · ΔE 30.8 Brown · ΔE 30.9

Nearest named CSS colourCrimson (#DC143C)ΔE 10.27, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#38FFE2

Analogous#FF38B8, #FF7F38

Triadic#55FF38, #3855FF

Split complementary#38FF7F, #38B8FF

Tetradic#B8FF38, #38FFE2, #7F38FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFD1D8

Lighter +20%#FF9EAC

Lighter +10%#FF6B81

Darker −10%#FF0529

Darker −20%#D1001E

Darker −30%#9E0017

Darker −40%#6B0010

More saturated +25%#FF3855

Less saturated −25%#E65167

Channel breakdown

R255

G56

B85

Red255 (100%)

Green56 (22%)

Blue85 (33.3%)

Hue351.26°

Saturation (HSL)100%

Lightness60.98%

Dominant channelRed

Hex per channelR FF · G 38 · B 55

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF3855 (chemical formula)

Formula
73,256.288 g/mol
3856 atoms

FF3855 has a molar mass of 73,256.288 g/mol, made up of 3856 atoms across 1 element: 3856 × F.

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Molar mass

Molar mass73,256.288 g/mol

Total atoms per molecule3856

Distinct elements1

Mass of one molecule1.2164493 × 10^-19 g

Molecules per gram8.2206469 × 10^18

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 × 3856)73,256.288 g/mol, 100%

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Elements in this formula

Fluorine

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