/* https://grabient.com/_gMugGwgL2f5GgQVf0JgE-f-Hf8Sf-Mf0Ff26?style=linearGradient&steps=7&angle=90 */

background: linear-gradient(90deg, #7b84ff 0.000%, #68a5ff 16.667%, #5fc6ff 33.333%, #63e5fc 50.000%, #73ffcd 66.667%, #8dff9d 83.333%, #aeff6f 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gMugGwgL2f5GgQVf0JgE-f-Hf8Sf-Mf0Ff26?style=linearGradient&steps=7&angle=90 -->
            <defs>
              <linearGradient id="gradient" x1="0.000" y1="0.500" x2="1.000" y2="0.500">
        <stop offset="0.000" stop-color="#7b84ff" /><stop offset="0.167" stop-color="#68a5ff" /><stop offset="0.333" stop-color="#5fc6ff" /><stop offset="0.500" stop-color="#63e5fc" /><stop offset="0.667" stop-color="#73ffcd" /><stop offset="0.833" stop-color="#8dff9d" /><stop offset="1.000" stop-color="#aeff6f" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#7b84ff", "#68a5ff", "#5fc6ff", "#63e5fc", "#73ffcd", "#8dff9d", "#aeff6f"]

// https://grabient.com/_gMugGwgL2f5GgQVf0JgE-f-Hf8Sf-Mf0Ff26?style=linearGradient&steps=7&angle=90
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 7.0;
const float ANGLE = 90.0;

vec3 palette(float t) {
    vec3 a = vec3(0.814, 0.432, 0.758);
    vec3 b = vec3(-0.442, 1.045, -0.759);
    vec3 c = vec3(0.318, -0.121, -0.238);
    vec3 d = vec3(-0.116, -0.763, -0.582);
    return a + b * cos(6.283185 * (c * t + d));
}

// N stops sampled from the palette, blended like the CSS gradient
vec3 stops(float t) {
    float n = STEPS - 1.0;
    float x = clamp(t, 0.0, 1.0) * n;
    return mix(palette(floor(x) / n), palette(min(floor(x) + 1.0, n) / n), fract(x));
}

void mainImage(out vec4 fragColor, in vec2 fragCoord) {
    vec2 p = fragCoord - 0.5 * iResolution.xy;
    // CSS angle: 0 = up, clockwise; span = CSS gradient-line length
    vec2 dir = vec2(sin(radians(ANGLE)), cos(radians(ANGLE)));
    float len = abs(iResolution.x * dir.x) + abs(iResolution.y * dir.y);
    float t = dot(p, dir) / len + 0.5;
    fragColor = vec4(stops(t), 1.0);
}

[
  [0.814, 0.432, 0.758],
  [-0.442, 1.045, -0.759],
  [0.318, -0.121, -0.238],
  [-0.116, -0.763, -0.582]
]

Gradient palette editor — #7b84ff to #aeff6f