Javascript Color Contrast Algo

gistfile1.txt

exportColor = (flags) => {
    if (!(flags & leaveValue) && valueElement) {
        // Implement logic for valueElement
    }
    
    let value = this.toString();
    if (this.caps) value = value.toUpperCase();
    if (this.hash) value = '#' + value;
    valueElement.value = value;

    if (!(flags & leaveStyle) && styleElement) {
        styleElement.style.backgroundImage = "none";
        styleElement.style.backgroundColor = '#' + this.toString();
        styleElement.style.color = (0.213 * this.rgb[0] + 0.715 * this.rgb[1] + 0.072 * this.rgb[2] < 0.5) ? '#FFF' : '#000';
    }
    
    if (!(flags & leavePad) && isPickerOwner()) redrawPad();
    if (!(flags & leaveSld) && isPickerOwner()) redrawSld();
}