Generate very light colors in a spectrum to display as background for columns in an excel or csv. Light enough to show black text in front, different enough to be distinguishable, and lacking a red component to allow for validation errors be highlighted in red.

color_spectrum_generator.py

import colorsys

class ColorGenerator:
    def __init__(self, hue=0.2, saturation=0.2, value=0.8):
        self.hue = hue  # Range [0.0, 1.0]
        self.saturation = saturation  # Range [0.0, 1.0]
        self.value = value  # Range [0.0, 1.0]

    def get_color(self):
        # Convert HSV to RGB
        r, g, b = colorsys.hsv_to_rgb(self.hue, self.saturation, self.value)
        return f"{int(r * 255):02X}{int(g * 255):02X}{int(b * 255):02X}"

    def update_color(self):
        # Update the hue to generate different colors
        self.hue = (self.hue + 0.05) % 1.0  # Small step within [0.0, 1.0]

        # Avoid reddish hues by constraining hue value
        if self.hue < 0.1 or self.hue > 0.8:
            self.hue = 0.2