fix: improve a11y of primary color

Author: Josh-Cena

src/css/custom.css

@@ -1,11 +1,14 @@
-/**
- * Any CSS included here will be global. The classic template
- * bundles Infima by default. Infima is a CSS framework designed to
- * work well for content-centric websites.
- */
-
-/* You can override the default Infima variables here. */
 :root {
+  --ifm-color-primary: #0071b3;
+  --ifm-color-primary-dark: #0066a1;
+  --ifm-color-primary-darker: #006098;
+  --ifm-color-primary-darkest: #004f7d;
+  --ifm-color-primary-light: #007cc5;
+  --ifm-color-primary-lighter: #0082ce;
+  --ifm-color-primary-lightest: #0093e9;
+}
+
+[data-theme="dark"] {
   --ifm-color-primary: #58b2e6;
   --ifm-color-primary-dark: #3ca5e2;
   --ifm-color-primary-darker: #2f9fe0;