@thi.ng/color/linear.js

Array-based color types, CSS parsing, conversions, transformations, declarative theme generation, gradients, presets

const linearSrgb = (x) => x <= 31308e-7 ? 12.92 * x : 1.055 * Math.pow(x, 1 / 2.4) - 0.055;
const srgbLinear = (x) => x <= 0.04045 ? x / 12.92 : Math.pow((x + 0.055) / 1.055, 2.4);
export {
  linearSrgb,
  srgbLinear
};