Recognised as Colour

#FC7557

#FC7557
Red
Dark
Nearest: Coral

#FC7557 is a red with RGB values 252, 117, 87 and HSL 11°, 96%, 66%. It is a dark colour, so black text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Coral.

Colour values

#FC7557#FC7557

HEX#FC7557

RGBrgb(252, 117, 87)

RGB (0–1)0.9882, 0.4588, 0.3412

RGB percentages98.8%, 45.9%, 34.1%

HSLhsl(10.9, 96.5%, 66.5%)

HSV / HSBhsv(10.9, 65.5%, 98.8%)

CMYK0%, 53.6%, 65.5%, 1.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,545,111

CSS custom property--colour: #FC7557;

Brightness & contrast

Relative luminance0.34106WCAG 2.x, 0 is black and 1 is white

Perceived brightness167 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.82:1

Contrast with white2.68:1WCAG normal text: Fail

Contrast with black7.82:1WCAG normal text: AAA

Greyscale equivalent#909090

Inverted#038AA8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#988C54no red cones; affects about 1% of men; ΔE 54.5 from the original

Deuteranopia#BAA954no green cones; the most common form, about 1% of men; ΔE 54.6 from the original

Tritanopia#FF5A6Eno blue cones; rare, and affects men and women equally; ΔE 22.8 from the original

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

Contrast with white, large text2.68:1WCAG large text: Fail

Contrast with black, large text7.82:1WCAG large text: AAA

Named colours

Coral · ΔE 7.9 Tomato · ΔE 10.3 Salmon · ΔE 12.9 Light salmon · ΔE 21.4 Chocolate · ΔE 21.9 Light coral · ΔE 22.6

Nearest named CSS colourCoral (#FF7F50)ΔE 7.91, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#57DEFC

Analogous#FC578C, #FCC757

Triadic#57FC75, #7557FC

Split complementary#57FCC7, #578CFC

Tetradic#8CFC57, #57DEFC, #C857FC

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFF0ED

Lighter +20%#FEC7BB

Lighter +10%#FD9E89

Darker −10%#FB4C25

Darker −20%#E92E04

Darker −30%#B72403

Darker −40%#851A02

More saturated +25%#FF7354

Less saturated −25%#E7836C

Channel breakdown

R252

G117

B87

Red252 (98.8%)

Green117 (45.9%)

Blue87 (34.1%)

Hue10.91°

Saturation (HSL)96.49%

Lightness66.47%

Dominant channelRed

Hex per channelR FC · G 75 · B 57

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FC7557 (chemical formula)

Formula
90,786.125 g/mol
7558 atoms

FC7557 has a molar mass of 90,786.125 g/mol, made up of 7558 atoms across 2 elements: 1 × F, 7557 × C.

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Molar mass

Molar mass90,786.125 g/mol

Total atoms per molecule7558

Distinct elements2

Mass of one molecule1.5075391 × 10^-19 g

Molecules per gram6.6333272 × 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

F0%

C100%

Fluorine (F)18.998 g/mol, 0.021%

Carbon (C × 7557)90,767.127 g/mol, 99.979%

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