Gradient palette editor — #704a9a to #f06e40

/* https://grabient.com/_gKngIYgG2gFYgEPgEFgTugN1gTWgJygGtgCL */

background: linear-gradient(90deg, #704a9a 0.000%, #da4b4a 16.667%, #ff7d31 33.333%, #a9b873 50.000%, #57cdb1 66.667%, #87ab90 83.333%, #f06e40 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gKngIYgG2gFYgEPgEFgTugN1gTWgJygGtgCL -->
            <defs>
              <linearGradient id="gradient" x1="0.000" y1="0.500" x2="1.000" y2="0.500">
        <stop offset="0.000" stop-color="#704a9a" /><stop offset="0.167" stop-color="#da4b4a" /><stop offset="0.333" stop-color="#ff7d31" /><stop offset="0.500" stop-color="#a9b873" /><stop offset="0.667" stop-color="#57cdb1" /><stop offset="0.833" stop-color="#87ab90" /><stop offset="1.000" stop-color="#f06e40" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#704a9a", "#da4b4a", "#ff7d31", "#a9b873", "#57cdb1", "#87ab90", "#f06e40"]

// https://grabient.com/_gKngIYgG2gFYgEPgEFgTugN1gTWgJygGtgCL
// 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(0.679, 0.536, 0.438);
    vec3 b = vec3(0.344, 0.271, 0.261);
    vec3 c = vec3(1.262, 0.885, 1.238);
    vec3 d = vec3(0.626, 0.429, 0.139);
    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);
}

[
  [0.679, 0.536, 0.438],
  [0.344, 0.271, 0.261],
  [1.262, 0.885, 1.238],
  [0.626, 0.429, 0.139]
]