Gradient palette editor — #2b0093 to #fba7b9

/* https://grabient.com/_gI0f_vgMvgHHgTpgDxgHegBggS_gJHgLogHb?style=linearGradient&steps=7&angle=225 */

background: linear-gradient(225deg, #2b0093 0.000%, #5310b5 16.667%, #8a30fd 33.333%, #c34fff 50.000%, #ee6ec2 66.667%, #ff8b93 83.333%, #fba7b9 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gI0f_vgMvgHHgTpgDxgHegBggS_gJHgLogHb?style=linearGradient&steps=7&angle=225 -->
            <defs>
              <linearGradient id="gradient" x1="0.854" y1="0.146" x2="0.146" y2="0.854">
        <stop offset="0.000" stop-color="#2b0093" /><stop offset="0.167" stop-color="#5310b5" /><stop offset="0.333" stop-color="#8a30fd" /><stop offset="0.500" stop-color="#c34fff" /><stop offset="0.667" stop-color="#ee6ec2" /><stop offset="0.833" stop-color="#ff8b93" /><stop offset="1.000" stop-color="#fba7b9" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#2b0093", "#5310b5", "#8a30fd", "#c34fff", "#ee6ec2", "#ff8b93", "#fba7b9"]

// https://grabient.com/_gI0f_vgMvgHHgTpgDxgHegBggS_gJHgLogHb?style=linearGradient&steps=7&angle=225
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 7.0;
const float ANGLE = 225.0;

vec3 palette(float t) {
    vec3 a = vec3(0.564, -0.017, 0.815);
    vec3 b = vec3(0.455, 1.257, 0.241);
    vec3 c = vec3(0.478, 0.096, 1.215);
    vec3 d = vec3(0.583, 0.744, 0.475);
    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);
}

[
  [0.564, -0.017, 0.815],
  [0.455, 1.257, 0.241],
  [0.478, 0.096, 1.215],
  [0.583, 0.744, 0.475]
]