Recognised as Colour

#FC6633

#FC6633
Orange
Dark
Nearest: Tomato

#FC6633 is a orange with RGB values 252, 102, 51 and HSL 15°, 97%, 59%. 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

#FC6633#FC6633

HEX#FC6633

RGBrgb(252, 102, 51)

RGB (0–1)0.9882, 0.4, 0.2

RGB percentages98.8%, 40%, 20%

HSLhsl(15.2, 97.1%, 59.4%)

HSV / HSBhsv(15.2, 79.8%, 98.8%)

CMYK0%, 59.5%, 79.8%, 1.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,541,235

CSS custom property--colour: #FC6633;

Brightness & contrast

Relative luminance0.30437WCAG 2.x, 0 is black and 1 is white

Perceived brightness159.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.09:1

Contrast with white2.96:1WCAG normal text: Fail

Contrast with black7.09:1WCAG normal text: AAA

Greyscale equivalent#828282

Inverted#0399CC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#91812Bno red cones; affects about 1% of men; ΔE 60.2 from the original

Deuteranopia#B5A22Dno green cones; the most common form, about 1% of men; ΔE 60.8 from the original

Tritanopia#FF415Cno blue cones; rare, and affects men and women equally; ΔE 31.5 from the original

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

Contrast with white, large text2.96:1WCAG large text: Fail

Contrast with black, large text7.09:1WCAG large text: AAA

Named colours

Tomato · ΔE 10 Coral · ΔE 13.7 Chocolate · ΔE 18.7 Orange red · ΔE 18.9 Dark orange · ΔE 27.6 Salmon · ΔE 29

Nearest named CSS colourTomato (#FF6347)ΔE 10, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#33C9FC

Analogous#FC3364, #FCCB33

Triadic#33FC66, #6633FC

Split complementary#33FCCB, #3364FC

Tetradic#64FC33, #33C9FC, #CB33FC

Tints, shades & saturation

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

Lighter +40%#FFFDFC

Lighter +30%#FED7CA

Lighter +20%#FDB198

Lighter +10%#FD8C65

Darker −10%#F84204

Darker −20%#C63403

Darker −30%#942702

Darker −40%#621A01

More saturated +25%#FF6530

Less saturated −25%#E2734D

Channel breakdown

R252

G102

B51

Red252 (98.8%)

Green102 (40%)

Blue51 (20%)

Hue15.22°

Saturation (HSL)97.1%

Lightness59.41%

Dominant channelRed

Hex per channelR FC · G 66 · B 33

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FC6633 (chemical formula)

Formula
79,687.961 g/mol
6634 atoms

FC6633 has a molar mass of 79,687.961 g/mol, made up of 6634 atoms across 2 elements: 1 × F, 6633 × C.

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Molar mass

Molar mass79,687.961 g/mol

Total atoms per molecule6634

Distinct elements2

Mass of one molecule1.3232497 × 10^-19 g

Molecules per gram7.5571525 × 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 × 6633)79,668.963 g/mol, 99.976%

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