Gradient palette editor — #430b4d to #fb6a48

/* https://grabient.com/_gIHgEJgIjgHqgDtgEMgGDgJHgOLgKXgIugI1?style=linearGradient&steps=7&angle=90 */

background: linear-gradient(90deg, #430b4d 0.000%, #73227d 16.667%, #a544b9 33.333%, #d267cf 50.000%, #f27dad 66.667%, #ff7e6e 83.333%, #fb6a48 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gIHgEJgIjgHqgDtgEMgGDgJHgOLgKXgIugI1?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="#430b4d" /><stop offset="0.167" stop-color="#73227d" /><stop offset="0.333" stop-color="#a544b9" /><stop offset="0.500" stop-color="#d267cf" /><stop offset="0.667" stop-color="#f27dad" /><stop offset="0.833" stop-color="#ff7e6e" /><stop offset="1.000" stop-color="#fb6a48" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#430b4d", "#73227d", "#a544b9", "#d267cf", "#f27dad", "#ff7e6e", "#fb6a48"]

// https://grabient.com/_gIHgEJgIjgHqgDtgEMgGDgJHgOLgKXgIugI1?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(0.519, 0.265, 0.547);
    vec3 b = vec3(0.490, 0.237, 0.268);
    vec3 c = vec3(0.387, 0.583, 0.907);
    vec3 d = vec3(0.663, 0.558, 0.565);
    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);
}

[
  [0.519, 0.265, 0.547],
  [0.490, 0.237, 0.268],
  [0.387, 0.583, 0.907],
  [0.663, 0.558, 0.565]
]