Luminance contrast k
Luminance contrast k
Luminance of the contrast colour, L1, divided by the luminance of the safety colour, L2, where L1 is greater than L2.
k = L1 / L2
- Document
- ISO
- Context
- International Standard
- Origin document
ISO 3864-4:2011(en) Graphical symbols — Safety colours and safety signs — Part 4: Colorimetric and photometric properties of safety sign materials
- Reference Link
- Release