Is Light Color

Check if a hex color is light (good for determining text color).

Code

General

h="${hex#\#}"
r=$((16#${h:0:2}))
g=$((16#${h:2:2}))
b=$((16#${h:4:2}))
lum=$(echo "$r * 0.299 + $g * 0.587 + $b * 0.114" | bc)
[[ $(echo "$lum > 186" | bc) -eq 1 ]] && echo "true" || echo "false"

Parameters

hex(string)

Hex color to check

Server

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