Colours of related hues: the classical harmonies of the colour wheel, turned in OKLCH unless a space is given.
The harmonies go back to Itten (The Art of Color, 1961), whose wheel is the painter's. Turned in OKLCH, a colour keeps its lightness and its chroma, while a turn of HSL's hue changes how light a colour looks (Ottosson, A perceptual color space for image processing, 2020). The evidence for the harmonies is mixed: Schloss and Palmer (2011) found that people rate pairs of similar hues as more harmonious, but prefer a figure whose hue contrasts with its ground. https://bottosson.github.io/posts/oklab/ https://pmc.ncbi.nlm.nih.gov/articles/PMC3037488
Colours of related hues: the classical harmonies of the colour wheel, turned in OKLCH unless a space is given. The harmonies go back to Itten (The Art of Color, 1961), whose wheel is the painter's. Turned in OKLCH, a colour keeps its lightness and its chroma, while a turn of HSL's hue changes how light a colour looks (Ottosson, A perceptual color space for image processing, 2020). The evidence for the harmonies is mixed: Schloss and Palmer (2011) found that people rate pairs of similar hues as more harmonious, but prefer a figure whose hue contrasts with its ground. https://bottosson.github.io/posts/oklab/ https://pmc.ncbi.nlm.nih.gov/articles/PMC3037488
(analogous x)(analogous x space)The colour x and its neighbours, 30° to either side, in the space.
The colour `x` and its neighbours, 30° to either side, in the `space`.
(complement x)(complement x space)The colour x with its hue turned halfway round, in the polar space,
by default OKLCH.
The colour `x` with its hue turned halfway round, in the polar `space`, by default OKLCH.
(rotate x degrees)(rotate x degrees space)The colour x with its hue turned by degrees, in the polar space, by
default OKLCH, e.g. :hsl to turn it as most colour pickers do.
The colour `x` with its hue turned by `degrees`, in the polar `space`, by default OKLCH, e.g. :hsl to turn it as most colour pickers do.
(split-complement x)(split-complement x space)The colour x and the two hues 30° to either side of its complement, in
the space.
The colour `x` and the two hues 30° to either side of its complement, in the `space`.
(square x)(square x space)The colour x and the three whose hues are a quarter, a half and three
quarters of a turn from it, in the space.
The colour `x` and the three whose hues are a quarter, a half and three quarters of a turn from it, in the `space`.
(triad x)(triad x space)The colour x and the two whose hues are a third of a turn from it, in
the space.
The colour `x` and the two whose hues are a third of a turn from it, in the `space`.
(turns x degrees)(turns x degrees space)The colour x, and the colours whose hues are turned from it by each of
degrees, in the polar space, by default OKLCH.
The colour `x`, and the colours whose hues are turned from it by each of `degrees`, in the polar `space`, by default OKLCH.
(wheel x n)(wheel x n space)The colour x and others, n in all, with their hues spaced evenly
round the wheel of the space.
The colour `x` and others, `n` in all, with their hues spaced evenly round the wheel of the `space`.
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