Gradient palette editor — #872f10 to #d09236

/* https://grabient.com/_gLLgGmgxmgDNgDwgx8gJVgKXgBigI6gHfgHP */

background: linear-gradient(90deg, #872f10 0.000%, #9d3801 16.667%, #bd5900 33.333%, #da8200 50.000%, #eaa107 66.667%, #e6a81a 83.333%, #d09236 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gLLgGmgxmgDNgDwgx8gJVgKXgBigI6gHfgHP -->
            <defs>
              <linearGradient id="gradient" x1="0.000" y1="0.500" x2="1.000" y2="0.500">
        <stop offset="0.000" stop-color="#872f10" /><stop offset="0.167" stop-color="#9d3801" /><stop offset="0.333" stop-color="#bd5900" /><stop offset="0.500" stop-color="#da8200" /><stop offset="0.667" stop-color="#eaa107" /><stop offset="0.833" stop-color="#e6a81a" /><stop offset="1.000" stop-color="#d09236" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#872f10", "#9d3801", "#bd5900", "#da8200", "#eaa107", "#e6a81a", "#d09236"]

// https://grabient.com/_gLLgGmgxmgDNgDwgx8gJVgKXgBigI6gHfgHP
// 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(0.715, 0.422, 3.174);
    vec3 b = vec3(0.205, 0.240, 3.196);
    vec3 c = vec3(0.597, 0.663, 0.098);
    vec3 d = vec3(0.570, 0.479, 0.463);
    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);
}

[
  [0.715, 0.422, 3.174],
  [0.205, 0.240, 3.196],
  [0.597, 0.663, 0.098],
  [0.570, 0.479, 0.463]
]