آیکن Alt فونت آوسام - دو رنگ

<font-awesome-icon icon="fa-duotone fa-alt" />

<FontAwesomeIcon icon="fa-duotone fa-alt" />

.my-icon {
    position: relative;
    font: var(--fa-font-duotone);
    font-style: normal;
}
.my-icon:before {
    position: absolute;
    content: "\e08a";
    opacity:0.5
}
.my-icon:after {
    content: "\e08a\e08a";
}

                        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 512" style="width: 30px;height: 30px;fill: black">
    <path d="M416 416c0 17.69 14.31 32 32 32h160c17.69 0 32-14.31 32-32s-14.31-32-32-32h-160C430.3 384 416 398.3 416 416z"/>
    <path style="opacity: 0.5" d="M608 128h-144.6L217 436C210.9 443.6 201.7 448 192 448H32c-17.69 0-32-14.31-32-32s14.31-32 32-32h144.6L423 76C429.1 68.41 438.3 64 448 64h160c17.69 0 32 14.31 32 32S625.7 128 608 128z"/>
</svg>