Added color conversion scripts

scripts/hex2hsl.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+
+# Prompt user for hex value
+echo -n "Enter hex color code: "
+read hex
+
+# Convert hex to RGB
+r=$((16#${hex:1:2}))
+g=$((16#${hex:3:2}))
+b=$((16#${hex:5:2}))
+
+# Convert RGB to HSL
+r=$((r/255))
+g=$((g/255))
+b=$((b/255))
+
+max=${r}
+min=${r}
+
+if [[ ${g} -gt ${max} ]]; then max=${g}; fi
+if [[ ${b} -gt ${max} ]]; then max=${b}; fi
+if [[ ${g} -lt ${min} ]]; then min=${g}; fi
+if [[ ${b} -lt ${min} ]]; then min=${b}; fi
+
+l=$(((max+min)/2))
+
+if [[ ${max} == ${min} ]]; then
+  h=0
+  s=0
+else
+  d=$((max-min))
+    if [[ $(awk "BEGIN {print (${l} > 0.5)}") -eq 1 ]]; then
+      s=$((d/(2-max-min)))
+    else
+      s=$((d/(max+min)))
+    fi
+  case ${max} in
+    ${r}) h=$(((g-b)/d))
+      if [[ ${h} -lt 0 ]]; then h=$((h+6)); fi
+      ;;
+    ${g}) h=$((2+(b-r)/d))
+      ;;
+    ${b}) h=$((4+(r-g)/d))
+      ;;
+  esac
+  h=$((h*60))
+fi
+
+# Assign alpha value (default is 1.0)
+a=1.0
+
+# Output HSLA values
+echo ${h} ${s} ${l} ${a}