Grape purple to cornflower blue to sapphire gradient palette editor

/* https://grabient.com/_gEzgFIgIugCGgEFgFkgHugFngFLg3ug2tg2Kfzw87mii?style=angularSwatches&steps=13&angle=135 */

background: conic-gradient(from 135deg, #462b47 0.000deg, #462b47 27.692deg, #57415f calc(27.692deg + 0.1deg), #57415f 55.385deg, #65597c calc(55.385deg + 0.1deg), #65597c 83.077deg, #6e709a calc(83.077deg + 0.1deg), #6e709a 110.769deg, #7083b6 calc(110.769deg + 0.1deg), #7083b6 138.462deg, #6a91cf calc(138.462deg + 0.1deg), #6a91cf 166.154deg, #5e98e1 calc(166.154deg + 0.1deg), #5e98e1 193.846deg, #4e97ec calc(193.846deg + 0.1deg), #4e97ec 221.538deg, #3d8eed calc(221.538deg + 0.1deg), #3d8eed 249.231deg, #307fe5 calc(249.231deg + 0.1deg), #307fe5 276.923deg, #276ad5 calc(276.923deg + 0.1deg), #276ad5 304.615deg, #2653be calc(304.615deg + 0.1deg), #2653be 332.308deg, #2d3ba2 calc(332.308deg + 0.1deg) 360.000deg);

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            <!-- https://grabient.com/_gEzgFIgIugCGgEFgFkgHugFngFLg3ug2tg2Kfzw87mii?style=angularSwatches&steps=13&angle=135 -->
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["#462b47", "#57415f", "#65597c", "#6e709a", "#7083b6", "#6a91cf", "#5e98e1", "#4e97ec", "#3d8eed", "#307fe5", "#276ad5", "#2653be", "#2d3ba2"]

// https://grabient.com/_gEzgFIgIugCGgEFgFkgHugFngFLg3ug2tg2Kfzw87mii?style=angularSwatches&steps=13&angle=135
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 13.0;
const float ANGLE = 135.0;

vec3 palette(float t) {
    vec3 a = vec3(0.294, 0.315, 0.545);
    vec3 b = vec3(0.145, 0.283, 0.386);
    vec3 c = vec3(0.872, 0.634, 0.585);
    vec3 d = vec3(3.728, 3.663, 3.628);
    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);
}

[
  [0.294, 0.315, 0.545],
  [0.145, 0.283, 0.386],
  [0.872, 0.634, 0.585],
  [3.728, 3.663, 3.628]
]