import { readColor } from "./readColor"

/** 获取一个颜色的亮度，[0,1] */
export function getLuma(color: any): number | void {
    let rgba = readColor(color)
    if (rgba) {
        let { r, g, b } = rgba
        r = r / 255
        g = g / 255
        b = b / 255
        return r * 0.2126 + g * 0.7152 + b * 0.0722
    }
}