| Non-Photo Blue | |
|---|---|
 Colour coordinates | |
| Hex triplet | #A4DDED |
| sRGBB (r, g, b) | (164, 221, 237) |
| HSV (h, s, v) | (193°, 31%, 93%) |
| CIELChuv (L, C, h) | (85, 34, 214°) |
| Source | [Unsourced] |
| ISCC–NBS descriptor | Very light greenish blue |
| B: Normalized to [0–255] (byte) | |
Non-photo blue (or non-repro blue) is a common tool in the graphic design and print industry,[1][2] being a particular shade of blue that cannot be detected by graphic arts camera film. This allows layout editors to write notes to the printer on the print flat (the image that is to be photographed and sent to print) which will not show in the final form. It also allows artists to lay down sketch lines without the need to erase after inking.
- ^ Colleen Doran (8 November 2007). Manga Pro Superstar Workshop: How to Create and Sell Comics and Graphic Novels. IMPACT. pp. 14–. ISBN 978-1-58180-985-5. Retrieved 2 January 2013.
- ^ Freddie E Williams II (1 September 2009). The DC Comics Guide to Digitally Drawing Comics. Random House Digital, Inc. pp. 52–. ISBN 978-0-8230-9923-8. Retrieved 2 January 2013.