ColorUtil.cs

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using UnityEngine;
 
public class ColorUtil
{
    public static Color RandomHSV(float minS, float maxS, float minV, float maxV)
    {
        return HSVToRGB(Rand.Range(0f, 1f), Rand.Range(minS, maxS), Rand.Range(minV, maxV));
    }
 
    public static Color HSVToRGB(float H, float S, float V)
    {
        Color white = Color.white;
        if (S == 0f)
        {
            white.r = V;
            white.g = V;
            white.b = V;
        }
        else if (V == 0f)
        {
            white.r = 0f;
            white.g = 0f;
            white.b = 0f;
        }
        else
        {
            white.r = 0f;
            white.g = 0f;
            white.b = 0f;
            float num = H * 6f;
            int num2 = (int)Mathf.Floor(num);
            float num3 = num - (float)num2;
            float num4 = V * (1f - S);
            float num5 = V * (1f - S * num3);
            float num6 = V * (1f - S * (1f - num3));
            switch (num2)
            {
            case -1:
                white.r = V;
                white.g = num4;
                white.b = num5;
                break;
            case 0:
                white.r = V;
                white.g = num6;
                white.b = num4;
                break;
            case 1:
                white.r = num5;
                white.g = V;
                white.b = num4;
                break;
            case 2:
                white.r = num4;
                white.g = V;
                white.b = num6;
                break;
            case 3:
                white.r = num4;
                white.g = num5;
                white.b = V;
                break;
            case 4:
                white.r = num6;
                white.g = num4;
                white.b = V;
                break;
            case 5:
                white.r = V;
                white.g = num4;
                white.b = num5;
                break;
            case 6:
                white.r = V;
                white.g = num6;
                white.b = num4;
                break;
            }
            white.r = Mathf.Clamp(white.r, 0f, 1f);
            white.g = Mathf.Clamp(white.g, 0f, 1f);
            white.b = Mathf.Clamp(white.b, 0f, 1f);
        }
        return white;
    }
}