diff --git a/packages/color-area/package.json b/packages/color-area/package.json
index 479df2d424..9e1521240a 100644
--- a/packages/color-area/package.json
+++ b/packages/color-area/package.json
@@ -62,7 +62,6 @@
         "lit-html"
     ],
     "dependencies": {
-        "@ctrl/tinycolor": "^4.0.3",
         "@spectrum-web-components/base": "^1.0.1",
         "@spectrum-web-components/color-handle": "^1.0.1",
         "@spectrum-web-components/opacity-checkerboard": "^1.0.1",
diff --git a/packages/color-field/package.json b/packages/color-field/package.json
index 3c23a44ef6..c9df0e9323 100644
--- a/packages/color-field/package.json
+++ b/packages/color-field/package.json
@@ -56,7 +56,6 @@
         "lit-html"
     ],
     "dependencies": {
-        "@ctrl/tinycolor": "^4.0.3",
         "@spectrum-web-components/base": "^1.0.1",
         "@spectrum-web-components/color-handle": "^1.0.1",
         "@spectrum-web-components/textfield": "^1.0.3"
diff --git a/packages/color-slider/package.json b/packages/color-slider/package.json
index eecfb4ede3..536027c8f5 100644
--- a/packages/color-slider/package.json
+++ b/packages/color-slider/package.json
@@ -62,7 +62,6 @@
         "lit-html"
     ],
     "dependencies": {
-        "@ctrl/tinycolor": "^4.0.3",
         "@spectrum-web-components/base": "^1.0.1",
         "@spectrum-web-components/color-handle": "^1.0.1",
         "@spectrum-web-components/opacity-checkerboard": "^1.0.1",
diff --git a/packages/color-wheel/package.json b/packages/color-wheel/package.json
index 82bc903c32..507f5c9bb0 100644
--- a/packages/color-wheel/package.json
+++ b/packages/color-wheel/package.json
@@ -62,7 +62,6 @@
         "lit-html"
     ],
     "dependencies": {
-        "@ctrl/tinycolor": "^4.0.3",
         "@spectrum-web-components/base": "^1.0.1",
         "@spectrum-web-components/color-handle": "^1.0.1",
         "@spectrum-web-components/reactive-controllers": "^1.0.3",
diff --git a/tools/reactive-controllers/package.json b/tools/reactive-controllers/package.json
index bf6aacc984..923e548db7 100644
--- a/tools/reactive-controllers/package.json
+++ b/tools/reactive-controllers/package.json
@@ -85,6 +85,7 @@
     ],
     "dependencies": {
         "@spectrum-web-components/progress-circle": "^1.0.1",
+        "colorjs.io": "^0.5.2",
         "lit": "^3.1.3"
     },
     "types": "./src/index.d.ts",
diff --git a/yarn.lock b/yarn.lock
index 7227b10cf2..35e130c95e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5592,7 +5592,7 @@
   integrity sha512-rGfd7jqXOdR69bEjrRP58ynuIeJU0czPfwQvzhtCzg7jKVukV+efNHqrs086sC6xutB3W4TF71K/dZMr3oyTyg==
 
 "@spectrum-web-components/eslint-plugin@file:./linters/eslint":
-  version "1.0.1"
+  version "1.0.3"
 
 "@storybook/addon-a11y@^7.5.0":
   version "7.6.20"
@@ -8180,7 +8180,7 @@ ajv@^8.6.0, ajv@^8.9.0:
     require-from-string "^2.0.2"
     uri-js "^4.2.2"
 
-alex@^11.0.1-color-testing:
+alex@^11.0.1:
   version "11.0.1"
   resolved "https://registry.yarnpkg.com/alex/-/alex-11.0.1.tgz#ac314ea97ca446b4edabf642762c3ff58febc58e"
   integrity sha512-rKLBZxD/lvuykdC6XB8ma9YjDl46j9ayHROZUtC1yJ2jlGpoP7RZR1tBBSjtlr260ixIW6iCkqAnHzmti5Q6CQ==
@@ -21863,10 +21863,10 @@ postcss@^8.4.23, postcss@^8.4.33, postcss@^8.4.38:
     picocolors "^1.0.0"
     source-map-js "^1.2.0"
 
-posthtml-attrs-parser@^1.0.1-color-testing:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/posthtml-attrs-parser/-/posthtml-attrs-parser-1.1.1.tgz#fc5c3d25e6be4fcf309db6f7ecfd7ec50ebbfbee"
-  integrity sha512-yWD1JGaLr5ENrEhUxjqEuSjTkYhX3VVK3ULNeh9Xs+Jqr3c0UGVkerxJg55Uyu036jm5nMsG6rJaBtE5YSf+lw==
+posthtml-attrs-parser@^1.0.1:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/posthtml-attrs-parser/-/posthtml-attrs-parser-1.1.2.tgz#19ce48cdbe0bbb92b4ddbbda44fed3b0d7bafe3b"
+  integrity sha512-9Que9y4k8c33iv8h5QyTfHKlurmsJIscozy7oeFRxuWeX/osXjVGu9o9MKrmo4TI6Vr9a9vh9b4LYXqm3/GvhA==
 
 posthtml-match-helper@^2.0.0:
   version "2.0.0"
@@ -24336,7 +24336,16 @@ string-similarity@^4.0.4:
   resolved "https://registry.yarnpkg.com/string-similarity/-/string-similarity-4.0.4.tgz#42d01ab0b34660ea8a018da8f56a3309bb8b2a5b"
   integrity sha512-/q/8Q4Bl4ZKAPjj8WerIBJWALKkaPRfrvhfF8k/B23i4nzrlRj2/go1m90In7nG/3XDSbOo0+pu6RvCTM9RGMQ==
 
-"string-width-cjs@npm:string-width@^4.2.0", "string-width@^1.0.2 || 2 || 3 || 4", string-width@^4.1.0, string-width@^4.2.0, string-width@^4.2.3:
+"string-width-cjs@npm:string-width@^4.2.0":
+  version "4.2.3"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.3.tgz#269c7117d27b05ad2e536830a8ec895ef9c6d010"
+  integrity sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==
+  dependencies:
+    emoji-regex "^8.0.0"
+    is-fullwidth-code-point "^3.0.0"
+    strip-ansi "^6.0.1"
+
+"string-width@^1.0.2 || 2 || 3 || 4", string-width@^4.1.0, string-width@^4.2.0, string-width@^4.2.3:
   version "4.2.3"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.3.tgz#269c7117d27b05ad2e536830a8ec895ef9c6d010"
   integrity sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==
@@ -24474,7 +24483,7 @@ stringify-object@^3.3.0:
     is-obj "^1.0.1"
     is-regexp "^1.0.0"
 
-"strip-ansi-cjs@npm:strip-ansi@^6.0.1", strip-ansi@^6.0.0, strip-ansi@^6.0.1:
+"strip-ansi-cjs@npm:strip-ansi@^6.0.1":
   version "6.0.1"
   resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.1.tgz#9e26c63d30f53443e9489495b2105d37b67a85d9"
   integrity sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==
@@ -24507,6 +24516,13 @@ strip-ansi@^5.1.0:
   dependencies:
     ansi-regex "^4.1.0"
 
+strip-ansi@^6.0.0, strip-ansi@^6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.1.tgz#9e26c63d30f53443e9489495b2105d37b67a85d9"
+  integrity sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==
+  dependencies:
+    ansi-regex "^5.0.1"
+
 strip-ansi@^7.0.0, strip-ansi@^7.0.1, strip-ansi@^7.1.0:
   version "7.1.0"
   resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-7.1.0.tgz#d5b6568ca689d8561370b0707685d22434faff45"
@@ -27129,7 +27145,7 @@ workbox-window@7.0.0:
     "@types/trusted-types" "^2.0.2"
     workbox-core "7.0.0"
 
-"wrap-ansi-cjs@npm:wrap-ansi@^7.0.0", wrap-ansi@^7.0.0:
+"wrap-ansi-cjs@npm:wrap-ansi@^7.0.0":
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-7.0.0.tgz#67e145cff510a6a6984bdf1152911d69d2eb9e43"
   integrity sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==
@@ -27147,6 +27163,15 @@ wrap-ansi@^6.2.0:
     string-width "^4.1.0"
     strip-ansi "^6.0.0"
 
+wrap-ansi@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-7.0.0.tgz#67e145cff510a6a6984bdf1152911d69d2eb9e43"
+  integrity sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==
+  dependencies:
+    ansi-styles "^4.0.0"
+    string-width "^4.1.0"
+    strip-ansi "^6.0.0"
+
 wrap-ansi@^8.1.0:
   version "8.1.0"
   resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-8.1.0.tgz#56dc22368ee570face1b49819975d9b9a5ead214"