Where colour groups lie R (Red) = 357-39 inclusive O (Orange) = 40-69 inclusive Y (Yellow) = 70-90 inclusive G (Green) = 91-204 inclusive B (Blue) = 205-284 inclusive V (Violet) = 285-356 inclusive N (Neutral) = Saturation of 0-8 BR (Brown) = Luminance of 0-39, saturation of 4-10 or luminance of 40-80, saturation of 4-25 M (Metallic) = Colours derived from metallic tones Luminance Luminance is a brightness measure and describes the amount of light that is reflected from a flat, painted surface. Luminance is an indicator of how bright the paint will appear. Luminance decreases when adding grey or black paint to either a pure colour or lighter hues of a colour. Saturation Saturation means purity and refers to the intensity of a specific hue (colour). It is based on the colour’s purity; a highly saturated hue has a vivid, intense colour, while a less saturated hue appears more muted and grey.With no saturation at all, the hue becomes a shade of grey. The purest colour is achieved by using clean undiluted colour. If the intensity drops the saturation also drops. To desaturate a colour in a paint system you can add tints of white, grey, black or the hue’s complementary (opposite) colour. 10% colour 15% added grey 15% added grey Luminance Greyness/Saturation To desaturate a clean colour add tints of grey or black Pure colour (maximum Luminance) Same luminance factor 100% clean colour To desaturate use less colour or add grey tints 10% colour 15% added grey 15% added grey Luminance Greyness/Saturation To desaturate a clean colour add tints of grey or black Pure colour (maximum Luminance) Same luminance factor 100% clean colour To desaturate use less colour or add grey tints | 19