Gradient palette editor — #3d79cd to #a65fbd

/* https://grabient.com/_geDgGOgKzgaegBSgCfgBjgTVgQ2gIEgA9gB6 */

background: linear-gradient(90deg, #3d79cd 0.000%, #4363a3 16.667%, #4f5188 33.333%, #5e5d9b 50.000%, #7275c6 66.667%, #8b77d8 83.333%, #a65fbd 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_geDgGOgKzgaegBSgCfgBjgTVgQ2gIEgA9gB6 -->
            <defs>
              <linearGradient id="gradient" x1="0.000" y1="0.500" x2="1.000" y2="0.500">
        <stop offset="0.000" stop-color="#3d79cd" /><stop offset="0.167" stop-color="#4363a3" /><stop offset="0.333" stop-color="#4f5188" /><stop offset="0.500" stop-color="#5e5d9b" /><stop offset="0.667" stop-color="#7275c6" /><stop offset="0.833" stop-color="#8b77d8" /><stop offset="1.000" stop-color="#a65fbd" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#3d79cd", "#4363a3", "#4f5188", "#5e5d9b", "#7275c6", "#8b77d8", "#a65fbd"]

// https://grabient.com/_geDgGOgKzgaegBSgCfgBjgTVgQ2gIEgA9gB6
// 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(1.923, 0.398, 0.691);
    vec3 b = vec3(1.694, 0.082, 0.159);
    vec3 c = vec3(0.099, 1.237, 1.078);
    vec3 d = vec3(0.516, 0.061, 0.122);
    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);
}

[
  [1.923, 0.398, 0.691],
  [1.694, 0.082, 0.159],
  [0.099, 1.237, 1.078],
  [0.516, 0.061, 0.122]
]