.box {
display: block;
width: 182px;
height: 229px;
background:
radial-gradient(ellipse at center, rgba(252,253,255,.2) 54%,rgba(212,229,255,.2) 66%,rgba(212,229,255,.2) 66%,rgba(153,193,255,.2) 79%,rgba(153,193,255,.2) 79%,rgba(57,136,255,.2) 100%),
linear-gradient(to top, rgb(57, 136, 255) 0%, rgb(153, 193, 255) 13%, rgb(212, 229, 255) 23%, rgb(252, 253, 255) 43%, rgb(252, 253, 255) 57%, rgb(212, 229, 255) 77%, rgb(153, 193, 255) 87%, rgb(57, 136, 255) 100%);
border-radius: 16px 0 0 16px;
}
<div class="box"></div>
<p>original <img src="https://i.stack.imgur.com/OJ5Z6.png" /></p>