Lets first study this design closely. If we see this logo, it is very clean. Each having four different colours. Their overlapping surfaces are shaded with brighter colours with different shades. So let's begin with the first step. 1. Draw a circle of radius 200 using ellipse tools, to do that select the tools and left-click your mouse button. A pallet will appear with the attributes Height and Width, fill it with 200 value. 2. Now draw another circle in the same way, but ensure that its radius is 100. i.e. half of the bigger circle. 3. Place the smaller circle over the bigger circle in such a way that, the lower vertex of both the circle are overlapping. Now using the line segment tool draw a horizontal and vertical line crossing the centre of the B-circle. 4. Copy the S-circle once. Now select both the circle and choose the subtract option in the pathfinder pallet. It will subtract the S-circle from the B-circle. 5. Select the individual lines and go to BOJECT>PATH>DIVIDE OBJECT BELOW. It will separate the shape into four parts. Delete the three shapes except one. 6. Now press CTRL+F to past the S-circle in front. Edit the shape using the Remove point tool and direct selection tool to form the particular shape. 7. Now select the shape, go to Rotate tool and place the anchor point to the centre of the circle. With mouse R-click + Alt, drag the shape to an angle. This will duplicate another shape. To duplicate 3 more times click Ctrl+D. (Now you can delete the circle) 8. To get each part separately, select all the shapes and divide it. Window>Pathfinder>divide Now delete all the unwanted parts. 9. Our next steps are to fill the colours. For that, we have our colour pallet. Use this to fill up all the colours. 10. Select all the shapes together and group it. We will add a drop shadow effect by going to Effect>stylize>drop shadow and giving some shadow. 11. Finally our text 'colour' with the font type 'Century Gothic'. These steps are very smooth and very simple to create this LOGO.
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