| import numpy as np | |
| import colorsys | |
| from .contrast_detector import ContrastDetector | |
| class HueContrastDetector(ContrastDetector): | |
| """Hue contrast detector""" | |
| def calculate_contrast(self, color1, color2): | |
| """Calculate hue difference between two colors""" | |
| hsv1 = colorsys.rgb_to_hsv(color1[0]/255.0, color1[1]/255.0, color1[2]/255.0) | |
| hsv2 = colorsys.rgb_to_hsv(color2[0]/255.0, color2[1]/255.0, color2[2]/255.0) | |
| hue_diff = abs(hsv1[0] - hsv2[0]) | |
| # Adjust for circular nature of hue | |
| if hue_diff > 0.5: | |
| hue_diff = 1 - hue_diff | |
| # Scale to 0-10 range to match WCAG scale | |
| return hue_diff * 20 | |