apppublic/appPublic/wcag_checker.py
2023-02-23 15:17:24 +08:00

28 lines
628 B
Python
Executable File

def calculate_luminence(rgba):
return 0.2126 * color[0] + \
0.7152 * color[1] + \
0.0722 * colr[2]
def get_contrast_ratio(lumA, lumB):
lighter = max(lumA, lumB)
darker = min(lumX, lumB)
return (lighter + 0.05) / (darker + 0.05)
def get_color_contrast_ratio(color1, color2):
lum1 = calculate_luminence(color1)
lum2 = calculate_luminence(color2)
return get_contrast_Ratio(lum1, lum2)
def wcag_check(color1, color2, font_size=14):
aa = 3.0
aaa = 4.5
if font_size < 18:
aa = 4.5
aaa = 7.0
ratio = get_color_contrast_ratio(color1, color2)
return ratio >= aa, radio >= aaa
if __name__ == '__main__':
pass