綺麗なグラデーションのカラーパレットを作りたくて、マテリアルデザインカラーを使おうと思ったところ、コードで定義されたものが見当たらなかったので作りました。

カラーコードはMaterial Design Colorsから拾いました。
RedからDeep Orangeまで、50,100,200...900まで並べています。

MaterialDesignColors.cs

        string[][] materialDesignColors = new string[][]
        {
        new string[] { "#ffebee","#ffcdd2","#ef9a9a","#e57373","#ef5350","#f44336","#e53935","#d32f2f","#c62828","#b71c1c" },
        new string[] { "#fce4ec","#f8bbd0","#f48fb1","#f06292","#ec407a","#e91e63","#d81b60","#c2185b","#ad1457","#880e4f" },
        new string[] { "#f3e5f5","#e1bee7","#ce93d8","#ba68c8","#ab47bc","#9c27b0","#8e24aa","#7b1fa2","#6a1b9a","#4a148c" },
        new string[] { "#ede7f6","#d1c4e9","#b39ddb","#9575cd","#7e57c2","#673ab7","#5e35b1","#512da8","#4527a0","#311b92" },
        new string[] { "#e8eaf6","#c5cae9","#9fa8da","#7986cb","#5c6bc0","#3f51b5","#3949ab","#303f9f","#283593","#1a237e" },
        new string[] { "#e3f2fd","#bbdefb","#90caf9","#64b5f6","#42a5f5","#2196f3","#1e88e5","#1976d2","#1565c0","#0d47a1" },
        new string[] { "#e1f5fe","#b3e5fc","#81d4fa","#4fc3f7","#29b6f6","#03a9f4","#039be5","#0288d1","#0277bd","#01579b" },
        new string[] { "#e0f2f1","#b2dfdb","#80cbc4","#4db6ac","#26a69a","#009688","#00897b","#00796b","#00695c","#004d40" },
        new string[] { "#e0f7fa","#b2ebf2","#80deea","#4dd0e1","#26c6da","#00bcd4","#00acc1","#0097a7","#00838f","#006064" },
        new string[] { "#e8f5e9","#c8e6c9","#a5d6a7","#81c784","#66bb6a","#4caf50","#43a047","#388e3c","#2e7d32","#1b5e20" },
        new string[] { "#f1f8e9","#dcedc8","#c5e1a5","#aed581","#9ccc65","#8bc34a","#7cb342","#689f38","#558b2f","#33691e" },
        new string[] { "#f9fbe7","#f0f4c3","#e6ee9c","#dce775","#d4e157","#cddc39","#c0ca33","#afb42b","#9e9d24","#827717" },
        new string[] { "#fffde7","#fff9c4","#fff59d","#fff176","#ffee58","#ffeb3b","#fdd835","#fbc02d","#f9a825","#f57f17" },
        new string[] { "#fff8e1","#ffecb3","#ffe082","#ffd54f","#ffca28","#ffc107","#ffb300","#ffa000","#ff8f00","#ff6f00" },
        new string[] { "#fff3e0","#ffe0b2","#ffcc80","#ffb74d","#ffa726","#ff9800","#fb8c00","#f57c00","#ef6c00","#e65100" },
        new string[] { "#fbe9e7","#ffccbc","#ffab91","#ff8a65","#ff7043","#ff5722","#f4511e","#e64a19","#d84315","#bf360c" },
        };

※ JSONの方が需要がありそうなので追記しました。

MaterialDesignColors.json

[
[ "#ffebee","#ffcdd2","#ef9a9a","#e57373","#ef5350","#f44336","#e53935","#d32f2f","#c62828","#b71c1c" ],
[ "#fce4ec","#f8bbd0","#f48fb1","#f06292","#ec407a","#e91e63","#d81b60","#c2185b","#ad1457","#880e4f" ],
[ "#f3e5f5","#e1bee7","#ce93d8","#ba68c8","#ab47bc","#9c27b0","#8e24aa","#7b1fa2","#6a1b9a","#4a148c" ],
[ "#ede7f6","#d1c4e9","#b39ddb","#9575cd","#7e57c2","#673ab7","#5e35b1","#512da8","#4527a0","#311b92" ],
[ "#e8eaf6","#c5cae9","#9fa8da","#7986cb","#5c6bc0","#3f51b5","#3949ab","#303f9f","#283593","#1a237e" ],
[ "#e3f2fd","#bbdefb","#90caf9","#64b5f6","#42a5f5","#2196f3","#1e88e5","#1976d2","#1565c0","#0d47a1" ],
[ "#e1f5fe","#b3e5fc","#81d4fa","#4fc3f7","#29b6f6","#03a9f4","#039be5","#0288d1","#0277bd","#01579b" ],
[ "#e0f2f1","#b2dfdb","#80cbc4","#4db6ac","#26a69a","#009688","#00897b","#00796b","#00695c","#004d40" ],
[ "#e0f7fa","#b2ebf2","#80deea","#4dd0e1","#26c6da","#00bcd4","#00acc1","#0097a7","#00838f","#006064" ],
[ "#e8f5e9","#c8e6c9","#a5d6a7","#81c784","#66bb6a","#4caf50","#43a047","#388e3c","#2e7d32","#1b5e20" ],
[ "#f1f8e9","#dcedc8","#c5e1a5","#aed581","#9ccc65","#8bc34a","#7cb342","#689f38","#558b2f","#33691e" ],
[ "#f9fbe7","#f0f4c3","#e6ee9c","#dce775","#d4e157","#cddc39","#c0ca33","#afb42b","#9e9d24","#827717" ],
[ "#fffde7","#fff9c4","#fff59d","#fff176","#ffee58","#ffeb3b","#fdd835","#fbc02d","#f9a825","#f57f17" ],
[ "#fff8e1","#ffecb3","#ffe082","#ffd54f","#ffca28","#ffc107","#ffb300","#ffa000","#ff8f00","#ff6f00" ],
[ "#fff3e0","#ffe0b2","#ffcc80","#ffb74d","#ffa726","#ff9800","#fb8c00","#f57c00","#ef6c00","#e65100" ],
[ "#fbe9e7","#ffccbc","#ffab91","#ff8a65","#ff7043","#ff5722","#f4511e","#e64a19","#d84315","#bf360c" ]
]

Unityでカラー文字列をColorに変換

Unityで使用する場合、ColorUtility.TryParseHtmlStringを利用してColorに変換できます。

Sample.cs

Color c;
ColorUtility.TryParseHtmlString(materialDesignColors[0][0], out c);
GetComponent<SpriteRenderer>().color = c;