You want a deep blue board that doesn't look like a cheap photocopy of navy. This 200GSM Colourful Days sheet in marine blue is thick, stands up on its own for group displays, and the colour stays rich under classroom lighting. At 510 x 640mm project size, you've got a full working surface without wrestling with A3 sheets that curl at the edges
| brand | Colourful Days |
| colour | Marine Blue |
| weight_gsm | 200 |
| size_mm | 510 x 640 |
| size_type | Project size |
| product_type | Colourboard |
| category | Office Supplies > Paper |