Tile grout fills in the spaces between tiles. Because of this, while grout's natural colour is an uneven whitish grey, many homeowners choose to pigment or dye their grout to help it better match the colour scheme of the room or floor. Many colours and shades are available to achieve this end.
The colour of grout, when it is mixed without pigment, is a dark grey with patches of lighter or darker colouring depending on the proportions of ingredients in the mix. This colour is made even by adding artificial pigments. Gray pigment ranges from light, silvery shades to dark charcoal or slate. Proprietary names for grey shades include the medium Pewter from Tri-State to the much lighter Platinum from Polyblend.
Popular in bathrooms, white grout is the lightest colour of grout and works especially well with light colour tiles. Pure white is hard to keep clean since it shows dirt very easily and many homeowners prefer shades of off-white that hide moderate dust and dirt while still providing a bright barrier between tile. Shades of white include the pure white Winter Frost from C Cure and the off-white shades Bone from Durabond and Antique White from Tri-State.
Although not as common as white and grey, green grout can match green tiles that are popular in bathrooms, kitchens and patios. Darker colours of green grout can work with tiles to make a small room appear even smaller and may not be suitable for some room sizes. Proprietary shades of green grout include the greyish Onyx Green from Polyblend, the almost pastel Ginko from Durabond and the almost black Flint Green from C Cure.
Brown lends a natural look to grout, appearing to be organic like baked clay or pressed sand. This colour is also mixed with colours such as grey, red and green to provide shades that complement several different colours of tile. Shades of brown range from the greenish Topaz and the reddish Amber from C Cure to the deep and chocolatey Nutmeg and muted Tobacco Brown from Polyblend.
Lighter than brown, tan has a sandy colour that also appears organic but in a lighter way. This lightness allows tan grout to work with popular light colours of tile such as white and biscuit without drawing too much attention. Proprietary shades of tan include Canvas, Sand and Beige from Tri-State and Haystack, Sandcastle and Camel from Durabond.