Φ1φ

The system computes the Lightness value for each step n by first determining the total distance (ΔL) between the Base Lightness (L₀) and the Target (L∞).

Then, for iteratively successive steps, it scales down that progression utilizing the Inverse Golden Ratio raised to the power of the step (φ⁻ⁿ).

This approach ensures that gradients follow a visually harmonious logarithmic mapping rather than a generic linear decay, seamlessly converging down to the target lightness.