feat: replace HSLuv colors with OKLCh

Cargo.lock

@@ -929,6 +929,17 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
 
+[[package]]
+name = "colorutils-rs"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "103c2458789cd7b46e6ed7c7ba1bf969b6569c902e3732843c55962c53eac686"
+dependencies = [
+ "erydanos",
+ "half",
+ "num-traits",
+]
+
 [[package]]
 name = "concurrent-queue"
 version = "2.5.0"
@@ -1299,6 +1310,7 @@ dependencies = [
  "brotli",
  "bytes",
  "chrono",
+ "colorutils-rs",
  "criterion",
  "data-encoding",
  "deltachat-contact-tools",
@@ -1342,7 +1354,6 @@ dependencies = [
  "ratelimit",
  "regex",
  "rusqlite",
- "rust-hsluv",
  "rustls",
  "rustls-pki-types",
  "sanitize-filename",
@@ -1895,6 +1906,15 @@ version = "3.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a5d9305ccc6942a704f4335694ecd3de2ea531b114ac2d51f5f843750787a92f"
 
+[[package]]
+name = "erydanos"
+version = "0.2.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8cbdc4987ed8e9ece64845393c2d53596b3a4ccbfb3948d799d58f6450e89fb1"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "escaper"
 version = "0.1.1"
@@ -2332,9 +2352,9 @@ dependencies = [
 
 [[package]]
 name = "half"
-version = "2.4.0"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5eceaaeec696539ddaf7b333340f1af35a5aa87ae3e4f3ead0532f72affab2e"
+checksum = "459196ed295495a68f7d7fe1d84f6c4b7ff0e21fe3017b2f283c6fac3ad803c9"
 dependencies = [
  "cfg-if",
  "crunchy",
@@ -5059,12 +5079,6 @@ dependencies = [
  "smallvec",
 ]
 
-[[package]]
-name = "rust-hsluv"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "efe2374f2385cdd8755a446f80b2a646de603c9d8539ca38734879b5c71e378b"
-
 [[package]]
 name = "rustc-demangle"
 version = "0.1.24"