Rename the gallery to onlylegs in the files

Im sorry

onlylegs/utils/contrast.py

@@ -0,0 +1,25 @@
+"""
+Calculate the contrast between two colors
+"""
+
+
+def contrast(background, light, dark, threshold=0.179):
+    """
+    background: tuple of (r, g, b) values
+    light: color to use if the background is light
+    dark: color to use if the background is dark
+    threshold: the threshold to use for determining lightness, the default is w3 recommended
+    """
+    red = background[0]
+    green = background[1]
+    blue = background[2]
+
+    # Calculate contrast
+    uicolors = [red / 255, green / 255, blue / 255]
+    cont = [
+        col / 12.92 if col <= 0.03928 else ((col + 0.055) / 1.055) ** 2.4
+        for col in uicolors
+    ]
+    lightness = (0.2126 * cont[0]) + (0.7152 * cont[1]) + (0.0722 * cont[2])
+
+    return light if lightness > threshold else dark