Created
February 29, 2020 17:51
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colormaps with equal luminance
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using Pkg | |
Pkg.activate(".") | |
using Colors | |
using Mustache | |
using Plots | |
using Clustering | |
luma(color) = luma(convert(RGB, color)) | |
luma(color::T) where {T <: RGB} = 0.299color.r + 0.587color.g + 0.114color.b | |
function generate_color(H=30, Y=0.3, S=0.5) | |
L = collect(0.0:0.001:1.0) | |
colors = map(l -> HSL(H, S, l), L) | |
best_match = findmin(abs.(luma.(colors).-Y)) | |
return colors[last(best_match)] | |
end | |
colors = generate_color.(1:360, 0.6, 0.2) | |
reshape(colors, (20, 18)) | |
D = zeros(Float64, (length(colors),length(colors))) | |
for (i,c1) in enumerate(colors) | |
for (j,c2) in enumerate(colors) | |
D[i,j] = colordiff(c1,c2) | |
end | |
end | |
heatmap(D) |
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