CLASSIFICATION OF COLOURS
Geometric Shape Meaning Safety Colour Contrast colour Graphical Symbol colour
Black
Prohibition Red White (Circle with cross bar)
White
Mandatory action Blue White (Circle)
Hazard Identification Black
(Danger, warning, caution)
! Yellow Black (Equilateral Triangle)
Safe condition White
(Escape, route, safety Green White (Square/Rectagle)
equipment)
White
Fire Fighting Red White (Square/Rectangle)
WARNING SIGN
A yellow triangle with black border and symbol within the
yellow area denoting a safety sign that gives warning of a
hazard
Safe Condition
A green oblong or square with the symbol or text in
white denoting a safety sign providing information
about safe conditions.