• 十六进制转换为color

Color nowColor;
ColorUtility.TryParseHtmlString("#FECEE1", out nowColor);

或者

public class CommonPalette
{
    public static Color StringToColor(string colorStr)
    {
        if (string.IsNullOrEmpty(colorStr))
        {
            return new Color();
        }
        int colorInt = int.Parse(colorStr, System.Globalization.NumberStyles.AllowHexSpecifier);
        return IntToColor(colorInt);
    }
    [NoToLuaAttribute]
    public static Color IntToColor(int colorInt)
    {
        float basenum = 255;

        int b = 0xFF & colorInt;
        int g = 0xFF00 & colorInt;
        g >>= 8;
        int r = 0xFF0000 & colorInt;
        r >>= 16;
        return new Color((float)r / basenum, (float)g / basenum, (float)b / basenum, 1);

    }
}

或者

/// <summary> hex转换到color </summary>
/// <param name="hex">十六进制字符串</param>
/// <returns>Color对象</returns>
public Color HexToColor(string hex)
{
    byte br = byte.Parse(hex.Substring(0, 2), System.Globalization.NumberStyles.HexNumber);
    byte bg = byte.Parse(hex.Substring(2, 2), System.Globalization.NumberStyles.HexNumber);
    byte bb = byte.Parse(hex.Substring(4, 2), System.Globalization.NumberStyles.HexNumber);
    byte cc = byte.Parse(hex.Substring(6, 2), System.Globalization.NumberStyles.HexNumber);
    float r = br / 255f;
    float g = bg / 255f;
    float b = bb / 255f;
    float a = cc / 255f;
    return new Color(r, g, b, a);
}

• color转换为十六进制

string hexadecimal = ColorUtility.ToHtmlStringRGB(nowColor);

或者

/// <summary> color转换hex </summary>
/// <param name="color">Color对象</param>
/// <returns>十六进制字符串</returns>
public static string ColorToHex(Color color)
{
    int r = Mathf.RoundToInt(color.r * 255.0f);
    int g = Mathf.RoundToInt(color.g * 255.0f);
    int b = Mathf.RoundToInt(color.b * 255.0f);
    int a = Mathf.RoundToInt(color.a * 255.0f);
    string hex = string.Format("{0:X2}{1:X2}{2:X2}{3:X2}", r, g, b, a);
    return hex;
}

参考链接：

1. https://blog.csdn.net/XBWXBWXBWXBW/article/details/78295273
2. https://www.jianshu.com/p/f165d90a491f