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颜色工具：hex/rgb/hsl 互转，计算补色、明暗与前景对比度
i6060hex / rgb / hsl 互转，计算补色、明暗与前景文字对比度。纯 Node 实现。
| 工具 | 作用 |
|---|---|
| color_convert | 颜色三格式互转 + 补色 + 对比度 |
dsh plugin add @i6060/dsh-color安装后在 profile 的 package.json 的 dsh.profile.bundles 中加入 "dsh-color"。
这个颜色 #3b82f6 的 rgb 和 hsl 是什么，配什么文字颜色
→ 调用 color_convert(color="#3b82f6")