Colour harmony through complementary colours (colours that face each other across the colour circle)
Red and green are on opposite sides of the colour wheel and are more or less in equal ratio in this photo.
The gold of Big Ben against the blue skies are at opposite sides of the colour circle and provide colour harmony through complementary colours
I have chosen this photo of a patchwork quilt which appeals to me as it has mainly colours which are complementary (i.e.orange and blue) and they are in the right proportion of 1:2
The colours in this section of a patchwork quilt are all very bold and contrasting and work well together; particularly the combinations of red/blue and orange/green
Colour harmony through similar colours
In this photo of a reflection the blues and greens being next to each other in the colour circle offer a cool range of colours.
“Cool colours suggest transparency and airiness, in part by association with the blue of the sky or of an atmospheric haze” – quote from the OCA booklet on “Colour”
The copper (orange) and the yellow sit next to each other and provide harmony of colour.
I have chosen another patchwork quilt but this time the main colours (blue and yellow) are spaced about one third of the way around the colour circle but not quite complementary
Colour contrast through contrasting colours
Pink and yellow are spaced about a third of the way round the circle and the vivid colours are eye-catching.
Again the orange and green are a third of the way round the colour circle and are very different from each other but not complementary.
The orange and the green are about a third of the way round the colour circle and provide a strong contrast.
Orange and blue are on opposite sides of the colour circle and act as complementary colours but the orange also acts as an accent
With this photo (again of a patchwork quilt) I am putting in the colour accent group as I like the way the small amount of bright colour sits against the larger (but paler) background colours