You've spent hours layering colour only to watch it dull within a year. That's not how good work should age. The Derwent Lightfast Midnight Blue pencil lays down rich, opaque colour with an oil-based core that mixes on the page for a paint-like finish. It meets ASTM D6901 and Blue Wool Scale ISO 105 lightfast standards, so your artwork holds its depth for up to 100 years under museum conditions. Grab one, start drawing, and stop worrying about what's on the page fading before it's finished
| brand | DERWENT |
| colour | Midnight Blue |
| core_type | Oil-based |
| lightfast_standards | ASTM D6901, Blue Wool Scale ISO 105 |
| category | EDUCATION & CRAFT |
| subcategory | ART & CRAFT |