https://www.sakurafountainpengallery.com/blog/post/4/platinum-chou-kuro-the-blackest-black-ever
Platinum Chou Kuro, the blackest black ... ever! - Blog - Sakura Fountain Pen Gallery
The new ink, Chou Kuro, whose blackness has been proven by numerical values, offers a bright and intense black color, and allows notes to be preserved perman...
blackest black
https://backstreetrecords.blogspot.com/2012/12/32-raime-quarter-turns-over-living-line.html
Backstreet Records: 32. Raime - Quarter Turns Over a Living Line (Blackest Ever Black)
Raime and Blackest Ever Black: two names that have been inextricably linked since they made their debut together in 2010. Across the Ra...