The colorSpace property of the HTMLInputElement interface reflects the <input> element's colorspace attribute, which indicates whether the color space of the serialized CSS color is sRGB (the default) or display-p3. It is only relevant to color controls.
A string containing the value of the colorspace attribute.
<input id="color-picker" type="color" colorspace="display-p3" alpha />const colorInput = document.getElementById("color-picker");
console.log(colorInput.colorSpace); // "display-p3"
colorInput.colorSpace = "limited-srgb"; // convert to srgb