*{
    box-sizing: border-box;
}
body{
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.color{
    position: relative;
    width: 400px;
    height: 300px;
    background: #f00;
    border-radius: 16px;
}

.covered{
    position: absolute;
    left: 0;
    bottom: 10px;
    width: 100%;
    height: 50%;
    border-bottom-left-radius: 16px;
    border-bottom-right-radius: 16px;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.color-code{
    font-size: 70px;
    color: #f00;
}