Spectrum

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 32 32"
>
    <linearGradient
        id="b"
        x1="2"
        x2="30"
        y1="30"
        y2="2"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#d7e6f9" />
        <stop offset="1" stop-color="#ccd3dd" />
    </linearGradient>
    <linearGradient
        id="a"
        x1="5"
        x2="11"
        y1="19"
        y2="13"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#617093" />
        <stop offset="1" stop-color="#3d4860" />
    </linearGradient>
    <linearGradient id="c" x1="8" x2="16" y1="20" y2="12" href="#a" />
    <linearGradient id="d" x1="10" x2="22" y1="22" y2="10" href="#a" />
    <linearGradient id="e" x1="16" x2="24" y1="20" y2="12" href="#a" />
    <linearGradient id="f" x1="21" x2="27" y2="13" href="#a" />
    <linearGradient
        id="g"
        x1="2.25"
        x2="4.75"
        y1="17.25"
        y2="14.75"
        href="#a"
    />
    <linearGradient
        id="h"
        x1="27.25"
        x2="29.75"
        y1="17.25"
        y2="14.75"
        href="#a"
    />
    <path fill="url(#b)" d="M2 2h28v28H2z" />
    <path fill="url(#a)" d="M7 11h2v10H7z" />
    <path fill="url(#c)" d="M11 9h2v14h-2z" />
    <path fill="url(#d)" d="M15 5h2v22h-2z" />
    <path fill="url(#e)" d="M19 9h2v14h-2z" />
    <path fill="url(#f)" d="M23 11h2v10h-2z" />
    <path fill="url(#g)" d="M2 15h3v2H2z" />
    <path fill="url(#h)" d="M27 15h3v2h-3z" />
</svg>