Babylon.js/sharedUiComponents/colorPicker/colorPicker.scss

.color-picker-container {
    width: 320px;
    height: 300px;
    background-color: white;
    display: grid;    
    grid-template-columns: 100%;
    grid-template-rows: 50% 50px 60px 40px 1fr;
    font-family: "acumin-pro-condensed";
    font-weight: normal;   
    font-size: 14px;
    
    .color-picker-saturation {
        grid-row: 1;
        grid-column: 1;
        display: grid;
        grid-template-columns: 100%;
        grid-template-rows: 100%;
        position: relative;
        cursor: pointer;
    
        .color-picker-saturation-white {
            grid-row: 1;
            grid-column: 1;

            background: -webkit-linear-gradient(to right, #fff, rgba(255,255,255,0));
            background: linear-gradient(to right, #fff, rgba(255,255,255,0));
        }

        .color-picker-saturation-black {
            grid-row: 1;
            grid-column: 1;

            background: -webkit-linear-gradient(to top, #000, rgba(0,0,0,0));
            background: linear-gradient(to top, #000, rgba(0,0,0,0));
        }

        .color-picker-saturation-cursor {
            pointer-events: none;
            width: 4px;
            height: 4px;
            box-shadow: 0 0 0 1.5px #fff, inset 0 0 1px 1px rgba(0,0,0,.3), 0 0 1px 2px rgba(0,0,0,.4);
            border-radius: 50%;
            transform: translate(-2px, -2px);
            position: absolute;
        }
    }

    .color-picker-hue {
        grid-row: 2;
        grid-column: 1;
        display: grid;
        margin: 10px;
        grid-template-columns: 24% 76%;
        grid-template-rows: 100%;

        .color-picker-hue-color {
            grid-row: 1;
            grid-column: 1;
            align-self: center;
            justify-self: center;
            width: 30px;
            height: 30px;
            border-radius: 15px;
            border: 1px solid black;
        }

        .color-picker-hue-slider {
            grid-row: 1;
            grid-column: 2;
            align-self: center;
            height: 16px;
            position: relative;
            cursor: pointer;
            
            background: linear-gradient(to right, #f00 0%, #ff0 17%, #0f0
                    33%, #0ff 50%, #00f 67%, #f0f 83%, #f00 100%);
            background: -webkit-linear-gradient(to right, #f00 0%, #ff0
                17%, #0f0 33%, #0ff 50%, #00f 67%, #f0f 83%, #f00 100%);                

            .color-picker-hue-cursor {
                pointer-events: none;
                width: 8px;
                height: 18px;
                transform: translate(-4px, -2px);
                background-color: rgb(248, 248, 248);
                box-shadow: 0 1px 4px 0 rgba(0, 0, 0, 0.37);
                position: absolute;
            }
        }
    }

    .color-picker-component {
        display: grid;
        margin: 5px;
        grid-template-columns: 100%;
        grid-template-rows: 50% 50%;

        .color-picker-component-value {
            justify-self: center;
            align-self: center;
            grid-row: 1;
            grid-column: 1;
            margin-bottom: 4px;

            input {
                width: 50px;
            }
        }

        .color-picker-component-label {
            justify-self: center;
            align-self: center;
            grid-row: 2;
            grid-column: 1;
            color:black;
        }
    }

    .color-picker-rgb {
        grid-row: 3;
        grid-column: 1;
        display: grid;
        margin: 10px;
        grid-template-columns: 20% 6.66% 20% 6.66% 20% 6.66% 20%;
        grid-template-rows: 100%;
    }

    .red {
        grid-row: 1;
        grid-column: 1;
    }

    .green {
        grid-row: 1;
        grid-column: 3;
    }

    .blue {
        grid-row: 1;
        grid-column: 5;
    }

    .alpha {
        grid-row: 1;
        grid-column: 7;

        &.grayed {
            opacity: 0.5;
        }
    }

    .color-picker-hex {
        grid-row: 4;
        grid-column: 1;
        display: grid;       
        grid-template-columns: 20% 80%;
        grid-template-rows: 100%;

        .color-picker-hex-label {
            justify-self: center;
            align-self: center;
            grid-row: 1;
            grid-column: 1;
            margin-left: 10px;
            color:black;
        }

        .color-picker-hex-value {
            justify-self: left;
            align-self: center;
            grid-row: 1;
            grid-column: 2;
            margin-left: 10px;
            margin-right: 10px;

            input {
                width: 70px;
            }
        }
    }
}