// In theory the lightness and saturation values of corresponding colors should not change.
// In reality, these values should be adjusted to create a more pleasant color combination.
// There is not any mathematical formula for this, but you can use the lighten, darken,
// saturate and desaturate functions to adjust your main colors.
!base_color ||= red
!complementary_color = complement(!base_color)

!dark_base_color     = darken(!base_color, 25)
!darker_base_color   = darken(!base_color, 50)
!darkest_base_color  = darken(!base_color, 75)
!light_base_color    = lighten(!base_color, 25)
!lighter_base_color  = lighten(!base_color, 50)
!lightest_base_color = lighten(!base_color, 75)

!dark_complementary_color     = darken(!complementary_color, 25)
!darker_complementary_color   = darken(!complementary_color, 50)
!darkest_complementary_color  = darken(!complementary_color, 75)
!light_complementary_color    = lighten(!complementary_color, 25)
!lighter_complementary_color  = lighten(!complementary_color, 50)
!lightest_complementary_color = lighten(!complementary_color, 75)
