Recognised as Colour

#FF5456

#FF5456
Red
Dark
Nearest: Tomato

#FF5456 is a red with RGB values 255, 84, 86 and HSL 359°, 100%, 66%. It is a dark colour, so black text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Tomato.

Colour values

#FF5456#FF5456

HEX#FF5456

RGBrgb(255, 84, 86)

RGB (0–1)1, 0.3294, 0.3373

RGB percentages100%, 32.9%, 33.7%

HSLhsl(359.3, 100%, 66.5%)

HSV / HSBhsv(359.3, 67.1%, 100%)

CMYK0%, 67.1%, 66.3%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,733,270

CSS custom property--colour: #FF5456;

Brightness & contrast

Relative luminance0.28273WCAG 2.x, 0 is black and 1 is white

Perceived brightness156.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.65:1

Contrast with white3.16:1WCAG normal text: Fail

Contrast with black6.65:1WCAG normal text: AA

Greyscale equivalent#787878

Inverted#00ABA9

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#837A55no red cones; affects about 1% of men; ΔE 69.3 from the original

Deuteranopia#AE9E51no green cones; the most common form, about 1% of men; ΔE 69.4 from the original

Tritanopia#FF2457no blue cones; rare, and affects men and women equally; ΔE 15.9 from the original

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

Contrast with white, large text3.16:1WCAG large text: AA

Contrast with black, large text6.65:1WCAG large text: AAA

Named colours

Tomato · ΔE 12.7 Crimson · ΔE 14.7 Salmon · ΔE 21.8 Firebrick · ΔE 22.8 Coral · ΔE 23.6 Indian red · ΔE 25

Nearest named CSS colourTomato (#FF6347)ΔE 12.75, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#54FFFD

Analogous#FF54AC, #FFA754

Triadic#56FF54, #5456FF

Split complementary#54FFA7, #54ACFF

Tetradic#ACFF54, #54FFFD, #A754FF

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFEDED

Lighter +20%#FFBABB

Lighter +10%#FF8788

Darker −10%#FF2124

Darker −20%#ED0003

Darker −30%#BA0002

Darker −40%#870002

More saturated +25%#FF5456

Less saturated −25%#EA696B

Channel breakdown

R255

G84

B86

Red255 (100%)

Green84 (32.9%)

Blue86 (33.7%)

Hue359.3°

Saturation (HSL)100%

Lightness66.47%

Dominant channelRed

Hex per channelR FF · G 54 · B 56

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF5456 (chemical formula)

Formula
103,672.086 g/mol
5457 atoms

FF5456 has a molar mass of 103,672.086 g/mol, made up of 5457 atoms across 1 element: 5457 × F.

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Molar mass

Molar mass103,672.086 g/mol

Total atoms per molecule5457

Distinct elements1

Mass of one molecule1.7215155 × 10^-19 g

Molecules per gram5.8088353 × 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 × 5457)103,672.086 g/mol, 100%

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Elements in this formula

Fluorine

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