Gradient palette editor — #f7ef05 to #f8763a

/* https://grabient.com/_gH9gI5gIbgILgHSgIKgPlgM0gNHgBPgN-gIB?style=linearGradient&steps=8&angle=315 */

background: linear-gradient(315deg, #f7ef05 0.000%, #9aff30 14.286%, #2ae38c 28.571%, #0095e6 42.857%, #3344ff 57.143%, #a41bef 71.429%, #fc3098 85.714%, #f8763a 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gH9gI5gIbgILgHSgIKgPlgM0gNHgBPgN-gIB?style=linearGradient&steps=8&angle=315 -->
            <defs>
              <linearGradient id="gradient" x1="0.854" y1="0.854" x2="0.146" y2="0.146">
        <stop offset="0.000" stop-color="#f7ef05" /><stop offset="0.143" stop-color="#9aff30" /><stop offset="0.286" stop-color="#2ae38c" /><stop offset="0.429" stop-color="#0095e6" /><stop offset="0.571" stop-color="#3344ff" /><stop offset="0.714" stop-color="#a41bef" /><stop offset="0.857" stop-color="#fc3098" /><stop offset="1.000" stop-color="#f8763a" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#f7ef05", "#9aff30", "#2ae38c", "#0095e6", "#3344ff", "#a41bef", "#fc3098", "#f8763a"]

// https://grabient.com/_gH9gI5gIbgILgHSgIKgPlgM0gNHgBPgN-gIB?style=linearGradient&steps=8&angle=315
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 8.0;
const float ANGLE = 315.0;

vec3 palette(float t) {
    vec3 a = vec3(0.509, 0.569, 0.539);
    vec3 b = vec3(0.523, 0.466, 0.522);
    vec3 c = vec3(0.997, 0.820, 0.839);
    vec3 d = vec3(0.079, 0.894, 0.513);
    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);
}

[
  [0.509, 0.569, 0.539],
  [0.523, 0.466, 0.522],
  [0.997, 0.820, 0.839],
  [0.079, 0.894, 0.513]
]