Yellow is the colour for general labourers and earth moving operators. View our Yellow Hard Hats here > Blue. Carpenters and other technical operators including electricians will normally wear blue hard hats, while orange is worn by road crews.Click to see full answer. Keeping this in consideration, are hard hats color coded?Although each hard hat color coding system has a different indication, there are no federal rules to govern each color. Therefore, you are free to choose whatever color you want. If you like orange, all your workers on the construction site can wear the orange hard hats, that is not a big deal.Secondly, what does red hard hat mean? Interim workers and employees in a technical advisory role can also wear blue. Red hard hat. Firefighters other employees with emergency training often wear red hats. Grey hard hat. These are most often issued to visitors on the work site. Thereof, what does black hard hat mean? Those trained in first aid, and fire marshals will wear stickers on their helmets for easy identification. The new hard hat colour codes are as follows: Black: Supervisors. Orange: Slinger/Signaller. White: Site Manager / Competent Operative / Vehicle Marshall (also wears a different coloured hi-vis vest)What do safety helmet Colours mean?White – for managers, foremen, engineers or supervisors. Green – for safety inspectors, new or probationary workers. Yellow – for general labourers or earth-moving operators. Brown – for those involved in high-heat applications such as welders. Blue – for carpenters, electricians and other technical operators.