Here are three paracord bracelets made with the same weaving pattern(doing figure 8's with the two working ends), for the same wrist size(mine at 8.5"), but using different amounts of paracord by varying the number of core strands. 5/8" curved side release buckles are used on each one.
Left: about 8 feet of paracord used, woven around a 2 strand core
Middle: about 10 feet of paracord used, woven around a 4 strand core(2 pairs/2 strands)
Right: about 12.5 feet of paracord used, woven around a 6 strand core(2 pairs/3 strands)
You can see how they increase in size/diameter/thickness with the more cord used for the core strands. This applies to the other variations/methods of making paracord bracelets and even lanyards with attachments on both ends for the core strands to wrap around, like snap hooks, key rings, and carabiners.
A 3/4" buckle will allow an 8 strand core, and a 1" buckle can fit a 10 strand core. In the past I've tried 1.5" and 2" sized buckles, but with so many core strands these just seemed way too bulky. I played around trying them with bracelet and belt versions but didn't personally care for the results(YMMV).
Photo collage of weave process shown, after looping onto side release buckle ends. You can finish by sewing, melting, gluing, or tucking the ends(I used tuck method on this on).
These next three photos show how the cords look when on the side release buckles before weaving, for the 2 strand core, 4 strand core, and 6 strand core paracord bracelets.
The core strands are paired off and you take turns with the two working ends: left side working strand over one core and under the other, right side strand over one core and under the other. Repeat that left/right pattern until you reach the other end. Then tuck/pull the working ends under a couple of the previous weaves with hemostats or needle nose pliers, and trim the ends to finish.
For a to color version, just sew/melt/glue two colors together, attach to buckle with the connected section in the core to be woven over...