Gradient palette editor — #a64900 to #047299

/* https://grabient.com/_gGpgEagAVf4-f5dgLAf2pf5Of5OgaCf8Ef1p?style=angularSwatches&steps=13&angle=90 */

background: conic-gradient(from 90deg, #a64900 0.000deg, #a64900 27.692deg, #c26100 calc(27.692deg + 0.1deg), #c26100 55.385deg, #d57800 calc(55.385deg + 0.1deg), #d57800 83.077deg, #df8c1e calc(83.077deg + 0.1deg), #df8c1e 110.769deg, #dd9d45 calc(110.769deg + 0.1deg), #dd9d45 138.462deg, #d0a969 calc(138.462deg + 0.1deg), #d0a969 166.154deg, #b9b188 calc(166.154deg + 0.1deg), #b9b188 193.846deg, #9bb3a1 calc(193.846deg + 0.1deg), #9bb3a1 221.538deg, #78afb1 calc(221.538deg + 0.1deg), #78afb1 249.231deg, #55a6b8 calc(249.231deg + 0.1deg), #55a6b8 276.923deg, #3399b7 calc(276.923deg + 0.1deg), #3399b7 304.615deg, #1787ac calc(304.615deg + 0.1deg), #1787ac 332.308deg, #047299 calc(332.308deg + 0.1deg) 360.000deg);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gGpgEagAVf4-f5dgLAf2pf5Of5OgaCf8Ef1p?style=angularSwatches&steps=13&angle=90 -->
            <defs>
              <clipPath id="squareClip">
                <rect x="0" y="0" width="800" height="400" />
              </clipPath>
              <filter id="antiGap">
                <feGaussianBlur in="SourceGraphic" stdDeviation="0.3" />
              </filter>
            </defs>
            <g clip-path="url(#squareClip)" filter="url(#antiGap)" shape-rendering="crispEdges">
          <path d="
              M 400.000,200.000
              L 847.214,200.000
              A 447.214,447.214 0 0 1 795.989,407.829
              Z
            " fill="#a64900" fill-opacity="1.000" /><path d="
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              L 795.989,407.829
              A 447.214,447.214 0 0 1 654.044,568.052
              Z
            " fill="#c26100" fill-opacity="1.000" /><path d="
              M 400.000,200.000
              L 654.044,568.052
              A 447.214,447.214 0 0 1 453.905,643.953
              Z
            " fill="#d57800" fill-opacity="1.000" /><path d="
              M 400.000,200.000
              L 453.905,643.953
              A 447.214,447.214 0 0 1 241.417,618.153
              Z
            " fill="#df8c1e" fill-opacity="1.000" /><path d="
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              L 241.417,618.153
              A 447.214,447.214 0 0 1 65.253,496.555
              Z
            " fill="#dd9d45" fill-opacity="1.000" /><path d="
              M 400.000,200.000
              L 65.253,496.555
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              Z
            " fill="#d0a969" fill-opacity="1.000" /><path d="
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              A 447.214,447.214 0 0 1 -34.219,92.976
              Z
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              Z
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              M 400.000,200.000
              L 65.253,-96.555
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              Z
            " fill="#78afb1" fill-opacity="1.000" /><path d="
              M 400.000,200.000
              L 241.417,-218.153
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              Z
            " fill="#55a6b8" fill-opacity="1.000" /><path d="
              M 400.000,200.000
              L 453.905,-243.953
              A 447.214,447.214 0 0 1 654.044,-168.052
              Z
            " fill="#3399b7" fill-opacity="1.000" /><path d="
              M 400.000,200.000
              L 654.044,-168.052
              A 447.214,447.214 0 0 1 795.989,-7.829
              Z
            " fill="#1787ac" fill-opacity="1.000" /><path d="
              M 400.000,200.000
              L 795.989,-7.829
              A 447.214,447.214 0 0 1 847.214,200.000
              Z
            " fill="#047299" fill-opacity="1.000" /></g>
        </svg>

["#a64900", "#c26100", "#d57800", "#df8c1e", "#dd9d45", "#d0a969", "#b9b188", "#9bb3a1", "#78afb1", "#55a6b8", "#3399b7", "#1787ac", "#047299"]

// https://grabient.com/_gGpgEagAVf4-f5dgLAf2pf5Of5OgaCf8Ef1p?style=angularSwatches&steps=13&angle=90
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 13.0;
const float ANGLE = 90.0;

vec3 palette(float t) {
    vec3 a = vec3(0.425, 0.282, 0.021);
    vec3 b = vec3(-0.450, -0.419, 0.704);
    vec3 c = vec3(-0.599, -0.434, -0.434);
    vec3 d = vec3(1.666, -0.252, -0.663);
    return a + b * cos(6.283185 * (c * t + d));
}

// N hard swatches sampled from the palette
vec3 stops(float t) {
    float i = min(floor(clamp(t, 0.0, 1.0) * STEPS), STEPS - 1.0);
    return palette(i / (STEPS - 1.0));
}

void mainImage(out vec4 fragColor, in vec2 fragCoord) {
    vec2 p = fragCoord - 0.5 * iResolution.xy;
    // conic from ANGLE, clockwise from top (CSS convention)
    float t = fract((atan(p.x, p.y) - radians(ANGLE)) / 6.283185);
    fragColor = vec4(stops(t), 1.0);
}

[
  [0.425, 0.282, 0.021],
  [-0.450, -0.419, 0.704],
  [-0.599, -0.434, -0.434],
  [1.666, -0.252, -0.663]
]