Recognised as Colour

#FC6643

#FC6643
Red
Dark
Nearest: Tomato

#FC6643 is a red with RGB values 252, 102, 67 and HSL 11°, 97%, 63%. It is a dark colour, so black text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Tomato.

Colour values

#FC6643#FC6643

HEX#FC6643

RGBrgb(252, 102, 67)

RGB (0–1)0.9882, 0.4, 0.2627

RGB percentages98.8%, 40%, 26.3%

HSLhsl(11.4, 96.9%, 62.5%)

HSV / HSBhsv(11.4, 73.4%, 98.8%)

CMYK0%, 59.5%, 73.4%, 1.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,541,251

CSS custom property--colour: #FC6643;

Brightness & contrast

Relative luminance0.30603WCAG 2.x, 0 is black and 1 is white

Perceived brightness160 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.12:1

Contrast with white2.95:1WCAG normal text: Fail

Contrast with black7.12:1WCAG normal text: AAA

Greyscale equivalent#838383

Inverted#0399BC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#8F823Eno red cones; affects about 1% of men; ΔE 61 from the original

Deuteranopia#B4A33Eno green cones; the most common form, about 1% of men; ΔE 61.5 from the original

Tritanopia#FF435Fno blue cones; rare, and affects men and women equally; ΔE 25.9 from the original

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

Contrast with white, large text2.95:1WCAG large text: Fail

Contrast with black, large text7.12:1WCAG large text: AAA

Named colours

Tomato · ΔE 3.1 Coral · ΔE 11.3 Chocolate · ΔE 21.1 Salmon · ΔE 22.3 Orange red · ΔE 24.5 Firebrick · ΔE 25.4

Nearest named CSS colourTomato (#FF6347)ΔE 3.14, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#43D9FC

Analogous#FC437C, #FCC343

Triadic#43FC66, #6643FC

Split complementary#43FCC3, #437DFC

Tetradic#7CFC43, #43D9FC, #C343FC

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FEE1DA

Lighter +20%#FEB8A7

Lighter +10%#FD8F75

Darker −10%#FB3D11

Darker −20%#D62B03

Darker −30%#A32103

Darker −40%#711702

More saturated +25%#FF6440

Less saturated −25%#E4755B

Channel breakdown

R252

G102

B67

Red252 (98.8%)

Green102 (40%)

Blue67 (26.3%)

Hue11.35°

Saturation (HSL)96.86%

Lightness62.55%

Dominant channelRed

Hex per channelR FC · G 66 · B 43

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FC6643 (chemical formula)

Formula
79,808.071 g/mol
6644 atoms

FC6643 has a molar mass of 79,808.071 g/mol, made up of 6644 atoms across 2 elements: 1 × F, 6643 × C.

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Molar mass

Molar mass79,808.071 g/mol

Total atoms per molecule6644

Distinct elements2

Mass of one molecule1.3252442 × 10^-19 g

Molecules per gram7.5457791 × 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, 0.024%

Carbon (C × 6643)79,789.073 g/mol, 99.976%

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