A first stab at a kanagawa based theme

kanagawa.toml

## User interface
"ui.selection" = { bg = "waveBlue1" }
"ui.background" = { fg = "fujiWhite", bg = "sumiInk1" }

"ui.linenr" = { fg = "sumiInk4" }

"ui.statusline" = { fg = "oldWhite", bg = "sumiInk0" }
"ui.statusline.inactive" = { fg = "fujiGray", bg = "sumiInk0" }
"ui.statusline.normal" = { fg = "sumiInk0", bg = "crystalBlue", modifiers = ["bold"] }
"ui.statusline.insert" = { fg = "sumiInk0", bg = "autumnGreen"  }
"ui.statusline.select" = { fg = "sumiInk0", bg = "oniViolet" }

"ui.bufferline" = { fg = "oldWhite", bg = "sumiInk0" }
"ui.bufferline.inactive" = { fg = "fujiGray", bg = "sumiInk0" }

"ui.popup" = { fg = "fujiWhite", bg = "sumiInk0" }
"ui.window" = { fg = "fujiWhite" }
"ui.help" = { fg = "fujiWhite", bg = "waveBlue1" }
"ui.text" = "fujiWhite"
"ui.text.focus" = { fg = "fujiWhite", bg = "waveBlue1", modifiers = ["bold"] }
"ui.virtual" = "waveBlue1"

"ui.cursor" = { fg = "fujiWhite", bg = "waveBlue1"}
"ui.cursor.primary" = { fg = "seaFoam", bg = "waveBlue1" }
"ui.cursor.match" = { fg = "seaFoam", modifiers = ["bold"] }
"ui.highlight" = { bg = "waveBlue2" }

diagnostic = { modifiers = ["underlined"] }

error = "samuraiRed"
warning = "roninYellow"
info = "waveAqua1"
hint = "dragonBlue"

## Syntax highlighting
"type" = "waveAqua2"
"constant" = "surimiOrange"
"constant.numeric" = "sakuraPink"
"constant.character.escape" = "springBlue"
"string" = "springGreen"
"string.regexp" = "boatYellow2"
"comment" = "fujiGray"
"variable" = "carpYellow"
"variable.builtin" = "waveRed"
"variable.parameter" = "carpYellow"
"variable.other.member" = "carpYellow"
"label" = "springBlue"
"punctuation" = "springViolet2"
"punctuation.delimiter" = "springViolet2" 
"punctuation.bracket" = "springViolet2" 
"keyword" = "oniViolet"
"keyword.directive" = "peachRed"
"operator" = "boatYellow2"
"function" = "crystalBlue"
"function.builtin" = "peachRed"
"function.macro" = "waveRed"
"tag" = "springBlue"
"namespace" = "surimiOrange"
"attribute" = "peachRed"
"constructor" = "springBlue"
"module" = "waveAqua2"
"special" = "peachRed"

[palette]
seaFoam       = "#C7CCD1" # custom lighter foreground
fujiWhite     = "#DCD7BA" # default foreground
oldWhite      = "#C8C093" # dark foreground, e.g. statuslines
sumiInk0      = "#16161D" # dark background, e.g. statuslines, floating windows
sumiInk1      = "#1F1F28" # default background
sumiInk3      = "#363646" # lighter background, e.g. colorcolumns and folds
sumiInk4      = "#54546D" # darker foreground, e.g. linenumbers, fold column
waveBlue1     = "#223249" # popup background, visual selection background
waveBlue2     = "#2D4F67" # popup selection background, search background
winterGreen   = "#2B3328" # diff add background
winterYellow  = "#49443C" # diff change background
winterRed     = "#43242B" # diff deleted background
winterBlue    = "#252535" # diff line background
autumnGreen   = "#76946A" # git add
autumnRed     = "#C34043" # git delete
autumnYellow  = "#DCA561" # git change
samuraiRed    = "#E82424" # diagnostic error
roninYellow   = "#FF9E3B" # diagnostic warning
waveAqua1     = "#6A9589" # diagnostic info
dragonBlue    = "#658594" # diagnostic hint
fujiGray      = "#727169" # comments
springViolet1 = "#938AA9" # light foreground
oniViolet     = "#957FB8" # statements and keywords
crystalBlue   = "#7E9CD8" # functions and titles
springViolet2 = "#9CABCA" # brackets and punctuation
springBlue    = "#7FB4CA" # specials and builtins
lightBlue     = "#A3D4D5" # not used!
waveAqua2     = "#7AA89F" # types
springGreen   = "#98BB6C" # strings
boatYellow1   = "#938056" # not used
boatYellow2   = "#C0A36E" # operators, regex
carpYellow    = "#E6C384" # identifiers
sakuraPink    = "#D27E99" # numbers
waveRed       = "#E46876" # standout specials 1, e.g. builtin variables
peachRed      = "#FF5D62" # standout specials 2, e.g. exception handling, returns
surimiOrange  = "#FFA066" # constants, imports, booleans
katanaGray    = "#717C7C" # deprecated