Gradient palette editor — #453e64 to #ffe783

/* https://grabient.com/_gIVgPdgJLgO9gL_gDOgECgDDgCNhZKhG6g3g?style=angularSwatches&steps=13&angle=90 */

background: conic-gradient(from 90deg, #453e64 0.000deg, #453e64 27.692deg, #664465 calc(27.692deg + 0.1deg), #664465 55.385deg, #864b67 calc(55.385deg + 0.1deg), #864b67 83.077deg, #a75569 calc(83.077deg + 0.1deg), #a75569 110.769deg, #c8606b calc(110.769deg + 0.1deg), #c8606b 138.462deg, #e76d6d calc(138.462deg + 0.1deg), #e76d6d 166.154deg, #ff7b70 calc(166.154deg + 0.1deg), #ff7b70 193.846deg, #ff8b73 calc(193.846deg + 0.1deg), #ff8b73 221.538deg, #ff9c76 calc(221.538deg + 0.1deg), #ff9c76 249.231deg, #ffae79 calc(249.231deg + 0.1deg), #ffae79 276.923deg, #ffc07c calc(276.923deg + 0.1deg), #ffc07c 304.615deg, #ffd480 calc(304.615deg + 0.1deg), #ffd480 332.308deg, #ffe783 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/_gIVgPdgJLgO9gL_gDOgECgDDgCNhZKhG6g3g?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="#453e64" 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="#664465" 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="#864b67" 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="#a75569" fill-opacity="1.000" /><path d="
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              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="#ff9c76" fill-opacity="1.000" /><path d="
              M 400.000,200.000
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              Z
            " fill="#ffae79" fill-opacity="1.000" /><path d="
              M 400.000,200.000
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              Z
            " fill="#ffc07c" 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="#ffd480" 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="#ffe783" fill-opacity="1.000" /></g>
        </svg>

["#453e64", "#664465", "#864b67", "#a75569", "#c8606b", "#e76d6d", "#ff7b70", "#ff8b73", "#ff9c76", "#ffae79", "#ffc07c", "#ffd480", "#ffe783"]

// https://grabient.com/_gIVgPdgJLgO9gL_gDOgECgDDgCNhZKhG6g3g?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(0.533, 0.989, 0.587);
    vec3 b = vec3(0.957, 0.767, 0.206);
    vec3 c = vec3(0.258, 0.195, 0.141);
    vec3 d = vec3(5.706, 4.538, 3.552);
    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);
}

[
  [0.533, 0.989, 0.587],
  [0.957, 0.767, 0.206],
  [0.258, 0.195, 0.141],
  [5.706, 4.538, 3.552]
]