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A yard of hue triangles surrounding the flattened faces of the colour cube - as per a colour wheel with light and dark centres. This is a systematic exploration of the entire Spoonflower print range from the RGB point of view. Each hue triangle runs through the available colours from a single fully saturated point around the circumference of the colour wheel towards the grey-scale axis at the centre of the colour cube (ie covering the available luminosity). The coloured hexagons are labelled with the RGB hex codes (except where they are split into two halves for adjoining triangles along their grey axes).
The design is sized (and centred) to put the core set of hues onto the 42" width fabrics. This includes: the cube faces; the primary colours of Red, Green and Blue and the Cyan, Magenta, Yellow secondaries; the half-way points between them (Pink, Orange, Lime, Jade, Azure, Violet); the two third points; the remaining two quarter points; the four fifth points; the remaining sixth points; plus the nine-tenths point because the colours shift in hue faster near the secondaries. There's also a zigzag grey scale on the edge space in each quadrant.
On a yard of the wider fabrics, you get a couple more columns of additional hue triangles down either side. These are the remaining tenth points not covered above (ie one, three and seven) and yet another point even closer to the secondaries (at sixteen seventeenths).
Hue triangles are of most use when working with colour gradients - especially within single hues (although there's also some rainbow information available from the colour cube faces). If there are areas of flooding or unexpected jumps in shade or even in colour within a particular triangle, then it is not safe to use those areas (or perhaps that hue at all) in a design requiring light and shading on its elements.
Hue triangles also show you how to get a decent degree of contrast and/or evenness between steps within a single colour design. Where the numerically even spaces appear uneven, it means you need to push the neighbouring colour values up or down a bit to get proper separation. Anyone merely seeking to pick a few colours which go well together probably doesn't need this level of detail in a colour map!
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