Google官网推荐的颜色，推荐使用500
<?xml version="1.0" encoding="utf-8"?>
<resources>
<!--Red 红色-->
<color name="red_50">#FFEBEE</color>
<color name="red_100">#FFCDD2</color>
<color name="red_200">#EF9A9A</color>
<color name="red_300">#E57373</color>
<color name="red_400">#EF5350</color>
<color name="red_500">#F44336</color>
<color name="red_600">#E53935</color>
<color name="red_700">#D32F2F</color>
<color name="red_800">#C62828</color>
<color name="red_900">#B71C1C</color>
<color name="red_a100">#FF8A80</color>
<color name="red_a200">#FF5252</color>
<color name="red_a400">#FF1744</color>
<color name="red_a700">#D50000</color>
<!--Pink 粉红色-->
<color name="pink_50">#FCE4EC</color>
<color name="pink_100">#F8BBD0</color>
<color name="pink_200">#F48FB1</color>
<color name="pink_300">#F06292</color>
<color name="pink_400">#EC407A</color>
<color name="pink_500">#E91E63</color>
<color name="pink_600">#D81B60</color>
<color name="pink_700">#C2185B</color>
<color name="pink_800">#AD1457</color>
<color name="pink_900">#880E4F</color>
<color name="pink_a100">#FF80AB</color>
<color name="pink_a200">#FF4081</color>
<color name="pink_a400">#F50057</color>
<color name="pink_a700">#C51162</color>
<!--Purple 紫色-->
<color name="purple_50">#F3E5F5</color>
<color name="purple_100">#E1BEE7</color>
<color name="purple_200">#CE93D8</color>
<color name="purple_300">#BA68C8</color>
<color name="purple_400">#AB47BC</color>
<color name="purple_500">#9C27B0</color>
<color name="purple_600">#8E24AA</color>
<color name="purple_700">#7B1FA2</color>
<color name="purple_800">#6A1B9A</color>
<color name="purple_900">#4A148C</color>
<color name="purple_a100">#EA80FC</color>
<color name="purple_a200">#E040FB</color>
<color name="purple_a400">#D500F9</color>
<color name="purple_a700">#AA00FF</color>
<!--Deep Purple 深紫色-->
<color name="DeepPurple_50">#EDE7F6</color>
<color name="DeepPurple_100">#D1C4E9</color>
<color name="DeepPurple_200">#B39DDB</color>
<color name="DeepPurple_300">#9575CD</color>
<color name="DeepPurple_400">#7E57C2</color>
<color name="DeepPurple_500">#673AB7</color>
<color name="DeepPurple_600">#5E35B1</color>
<color name="DeepPurple_700">#512DA8</color>
<color name="DeepPurple_800">#4527A0</color>
<color name="DeepPurple_900">#311B92</color>
<color name="DeepPurple_a100">#B388FF</color>
<color name="DeepPurple_a200">#7C4DFF</color>
<color name="DeepPurple_a400">#651FFF</color>
<color name="DeepPurple_a700">#6200EA</color>
<!--Indigo 靛青-->
<color name="Indigo_50">#E8EAF6</color>
<color name="Indigo_100">#C5CAE9</color>
<color name="Indigo_200">#9FA8DA</color>
<color name="Indigo_300">#7986CB</color>
<color name="Indigo_400">#5C6BC0</color>
<color name="Indigo_500">#3F51B5</color>
<color name="Indigo_600">#3949AB</color>
<color name="Indigo_700">#303F9F</color>
<color name="Indigo_800">#283593</color>
<color name="Indigo_900">#1A237E</color>
<color name="Indigo_a100">#8C9EFF</color>
<color name="Indigo_a200">#536DFE</color>
<color name="Indigo_a400">#3D5AFE</color>
<color name="Indigo_a700">#304FFE</color>
<!--Blue 蓝色-->
<color name="Blue_50">#E3F2FD</color>
<color name="Blue_100">#BBDEFB</color>
<color name="Blue_200">#90CAF9</color>
<color name="Blue_300">#64B5F6</color>
<color name="Blue_400">#42A5F5</color>
<color name="Blue_500">#2196F3</color>
<color name="Blue_600">#1E88E5</color>
<color name="Blue_700">#1976D2</color>
<color name="Blue_800">#1565C0</color>
<color name="Blue_900">#0D47A1</color>
<color name="Blue_a100">#82B1FF</color>
<color name="Blue_a200">#448AFF</color>
<color name="Blue_a400">#2979FF</color>
<color name="Blue_a700">#2962FF</color>
<!--Light Blue 亮蓝色-->
<color name="LightBlue_50">#E1F5FE</color>
<color name="LightBlue_100">#B3E5FC</color>
<color name="LightBlue_200">#81D4FA</color>
<color name="LightBlue_300">#4FC3F7</color>
<color name="LightBlue_400">#29B6F6</color>
<color name="LightBlue_500">#03A9F4</color>
<color name="LightBlue_600">#039BE5</color>
<color name="LightBlue_700">#0288D1</color>
<color name="LightBlue_800">#0277BD</color>
<color name="LightBlue_900">#01579B</color>
<color name="LightBlue_a100">#80D8FF</color>
<color name="LightBlue_a200">#40C4FF</color>
<color name="LightBlue_a400">#00B0FF</color>
<color name="LightBlue_a700">#0091EA</color>
<!--Cyan 青色-->
<color name="Cyan_50">#E0F7FA</color>
<color name="Cyan_100">#B2EBF2</color>
<color name="Cyan_200">#80DEEA</color>
<color name="Cyan_300">#4DD0E1</color>
<color name="Cyan_400">#26C6DA</color>
<color name="Cyan_500">#00BCD4</color>
<color name="Cyan_600">#00ACC1</color>
<color name="Cyan_700">#0097A7</color>
<color name="Cyan_800">#00838F</color>
<color name="Cyan_900">#006064</color>
<color name="Cyan_a100">#84FFFF</color>
<color name="Cyan_a200">#18FFFF</color>
<color name="Cyan_a400">#00E5FF</color>
<color name="Cyan_a700">#00B8D4</color>
<!--Teal 蒂尔-->
<color name="Teal_50">#E0F2F1</color>
<color name="Teal_100">#B2DFDB</color>
<color name="Teal_200">#80CBC4</color>
<color name="Teal_300">#4DB6AC</color>
<color name="Teal_400">#26A69A</color>
<color name="Teal_500">#009688</color>
<color name="Teal_600">#00897B</color>
<color name="Teal_700">#00796B</color>
<color name="Teal_800">#00695C</color>
<color name="Teal_900">#004D40</color>
<color name="Teal_a100">#A7FFEB</color>
<color name="Teal_a200">#64FFDA</color>
<color name="Teal_a400">#1DE9B6</color>
<color name="Teal_a700">#00BFA5</color>
<!--Green 绿色-->
<color name="Green_50">#E8F5E9</color>
<color name="Green_100">#C8E6C9</color>
<color name="Green_200">#A5D6A7</color>
<color name="Green_300">#81C784</color>
<color name="Green_400">#66BB6A</color>
<color name="Green_500">#4CAF50</color>
<color name="Green_600">#43A047</color>
<color name="Green_700">#388E3C</color>
<color name="Green_800">#2E7D32</color>
<color name="Green_900">#1B5E20</color>
<color name="Green_a100">#B9F6CA</color>
<color name="Green_a200">#69F0AE</color>
<color name="Green_a400">#00E676</color>
<color name="Green_a700">#00C853</color>
<!--Light Green 亮绿色-->
<color name="LightGreen_50">#F1F8E9</color>
<color name="LightGreen_100">#DCEDC8</color>
<color name="LightGreen_200">#C5E1A5</color>
<color name="LightGreen_300">#AED581</color>
<color name="LightGreen_400">#9CCC65</color>
<color name="LightGreen_500">#8BC34A</color>
<color name="LightGreen_600">#7CB342</color>
<color name="LightGreen_700">#689F38</color>
<color name="LightGreen_800">#558B2F</color>
<color name="LightGreen_900">#33691E</color>
<color name="LightGreen_a100">#CCFF90</color>
<color name="LightGreen_a200">#B2FF59</color>
<color name="LightGreen_a400">#76FF03</color>
<color name="LightGreen_a700">#64DD17</color>
<!--Lime 酸橙色-->
<color name="Lime_50">#F9FBE7</color>
<color name="Lime_100">#F0F4C3</color>
<color name="Lime_200">#E6EE9C</color>
<color name="Lime_300">#DCE775</color>
<color name="Lime_400">#D4E157</color>
<color name="Lime_500">#CDDC39</color>
<color name="Lime_600">#C0CA33</color>
<color name="Lime_700">#AFB42B</color>
<color name="Lime_800">#9E9D24</color>
<color name="Lime_900">#827717</color>
<color name="Lime_a100">#F4FF81</color>
<color name="Lime_a200">#EEFF41</color>
<color name="Lime_a400">#C6FF00</color>
<color name="Lime_a700">#AEEA00</color>
<!--Yellow 黄色-->
<color name="Yellow_50">#FFFDE7</color>
<color name="Yellow_100">#FFF9C4</color>
<color name="Yellow_200">#FFF59D</color>
<color name="Yellow_300">#FFF176</color>
<color name="Yellow_400">#FFEE58</color>
<color name="Yellow_500">#FFEB3B</color>
<color name="Yellow_600">#FDD835</color>
<color name="Yellow_700">#FBC02D</color>
<color name="Yellow_800">#F9A825</color>
<color name="Yellow_900">#F57F17</color>
<color name="Yellow_a100">#FFFF8D</color>
<color name="Yellow_a200">#FFFF00</color>
<color name="Yellow_a400">#FFEA00</color>
<color name="Yellow_a700">#FFD600</color>
<!--Amber 琥珀色-->
<color name="Amber_50">#FFF8E1</color>
<color name="Amber_100">#FFECB3</color>
<color name="Amber_200">#FFE082</color>
<color name="Amber_300">#FFD54F</color>
<color name="Amber_400">#FFCA28</color>
<color name="Amber_500">#FFC107</color>
<color name="Amber_600">#FFB300</color>
<color name="Amber_700">#FFA000</color>
<color name="Amber_800">#FF8F00</color>
<color name="Amber_900">#FF6F00</color>
<color name="Amber_a100">#FFE57F</color>
<color name="Amber_a200">#FFD740</color>
<color name="Amber_a400">#FFC400</color>
<color name="Amber_a700">#FFAB00</color>
<!--Orange 橘色-->
<color name="Orange_50">#FFF3E0</color>
<color name="Orange_100">#FFE0B2</color>
<color name="Orange_200">#FFCC80</color>
<color name="Orange_300">#FFB74D</color>
<color name="Orange_400">#FFA726</color>
<color name="Orange_500">#FF9800</color>
<color name="Orange_600">#FB8C00</color>
<color name="Orange_700">#F57C00</color>
<color name="Orange_800">#EF6C00</color>
<color name="Orange_900">#E65100</color>
<color name="Orange_a100">#FFD180</color>
<color name="Orange_a200">#FFAB40</color>
<color name="Orange_a400">#FF9100</color>
<color name="Orange_a700">#FF6D00</color>
<!--Deep Orange 深橘色-->
<color name="DeepOrange_50">#FBE9E7</color>
<color name="DeepOrange_100">#FFCCBC</color>
<color name="DeepOrange_200">#FFAB91</color>
<color name="DeepOrange_300">#FF8A65</color>
<color name="DeepOrange_400">#FF7043</color>
<color name="DeepOrange_500">#FF5722</color>
<color name="DeepOrange_600">#F4511E</color>
<color name="DeepOrange_700">#F4511E</color>
<color name="DeepOrange_800">#D84315</color>
<color name="DeepOrange_900">#BF360C</color>
<color name="DeepOrange_a100">#FF9E80</color>
<color name="DeepOrange_a200">#FF6E40</color>
<color name="DeepOrange_a400">#FF3D00</color>
<color name="DeepOrange_a700">#DD2C00</color>
<!--Brown 褐色 -->
<color name="Brown_50">#EFEBE9</color>
<color name="Brown_100">#D7CCC8</color>
<color name="Brown_200">#BCAAA4</color>
<color name="Brown_300">#A1887F</color>
<color name="Brown_400">#8D6E63</color>
<color name="Brown_500">#795548</color>
<color name="Brown_600">#6D4C41</color>
<color name="Brown_700">#5D4037</color>
<color name="Brown_800">#4E342E</color>
<color name="Brown_900">#3E2723</color>
<!--Grey 灰色 -->
<color name="Grey_50">#FAFAFA</color>
<color name="Grey_100">#F5F5F5</color>
<color name="Grey_200">#EEEEEE</color>
<color name="Grey_300">#E0E0E0</color>
<color name="Grey_400">#BDBDBD</color>
<color name="Grey_500">#9E9E9E</color>
<color name="Grey_600">#757575</color>
<color name="Grey_700">#616161</color>
<color name="Grey_800">#424242</color>
<color name="Grey_900">#212121</color>
<!--Blue Grey 蓝灰色 -->
<color name="BlueGrey_50">#ECEFF1</color>
<color name="BlueGrey_100">#CFD8DC</color>
<color name="BlueGrey_200">#B0BEC5</color>
<color name="BlueGrey_300">#90A4AE</color>
<color name="BlueGrey_400">#78909C</color>
<color name="BlueGrey_500">#607D8B</color>
<color name="BlueGrey_600">#546E7A</color>
<color name="BlueGrey_700">#455A64</color>
<color name="BlueGrey_800">#37474F</color>
<color name="BlueGrey_900">#263238</color>
<!--Black 黑色 -->
<color name="Black">#000000</color>
<!--White 白色 -->
<color name="White">#FFFFFF</color>
</resources>
这里是网址：https://www.google.com/design/spec/material-design/introduction.html#introduction-goals