The colours on a competition plate are not a design choice. They are set by the International Weightlifting Federation so that a referee can read the load on a bar from across a hall. The same code has spread to kettlebells and, increasingly, to dumbbells and grip plates. Here is the code, and the cases where it makes sense to depart from it.
The code
| Colour | Plate | Change plate | Competition kettlebell |
|---|---|---|---|
| Red | 25 kg | 2.5 kg | 32 kg |
| Blue | 20 kg | 2 kg | 12 kg |
| Yellow | 15 kg | 1.5 kg | 16 kg |
| Green | 10 kg | 1 kg | 24 kg |
| White | 5 kg | 0.5 kg | — |
Kettlebell colours follow a different sequence from plates, which surprises buyers ordering both for the first time. A green kettlebell is 24 kg; a green plate is 10 kg.
Where the code applies
Competition bumper plates must follow it. Training bumper plates usually do, because coaches want to load a bar without reading numerals. Competition kettlebells follow the kettlebell sequence. Beyond that, the code is a convention, not a requirement: rubber grip plates, urethane dumbbells and vinyl studio weights use it where a facility wants fast visual identification.
When to use your own scheme
Private-label brands often own a colour. If your brand is built on a specific orange or teal, a colour-coded range in the IWF scheme dilutes it. A common compromise is black product with a colour band or end cap in the brand colour, and weight marking that carries the identification instead. Studio and retail weights (vinyl dumbbells, neoprene sets) are almost always sold in a brand's own palette, because the buyer there is choosing by colour, not by kilograms.
Metric and imperial
The code is defined in kilograms. Imperial plates (45, 35, 25 lb) do not map cleanly onto it, and most US-market bumpers use the same colours in a shifted sequence or stay black. If you order both systems, decide the colour logic before tooling so that the same red plate is not 25 kg in one market and 55 lb in another.
Written by the people who quote, tool and inspect the product at our own plant. Questions: [email protected]
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