That rich, saturated cobalt you keep reaching for? The one that reads bold on white paper without going neon? That's the Derwent Artists Pencil in Cobalt Blue 3100. Round barrel, colour-grade lead made for layering and blending. You drop it into your set and suddenly the blues stop looking flat. One pencil, one specific cobalt, right when you need it
| brand | Derwent |
| colour | Cobalt Blue |
| shade_number | 3100 |
| barrel_shape | Round |
| grade | Colour-grade |
| category | Education & Craft > Art & Craft |
| use | Drawing, sketching, layering, blending |