Viridian to weird green to bluegray gradient palette editor

/* https://grabient.com/_gEggLvgIlgENf9Uf9ggFOfy5f4Cf6SgO6gAt?style=angularSwatches&steps=13&angle=315 */

background: conic-gradient(from 315deg, #1c9565 0.000deg, #1c9565 27.692deg, #259f63 calc(27.692deg + 0.1deg), #259f63 55.385deg, #30ae64 calc(55.385deg + 0.1deg), #30ae64 83.077deg, #3cc169 calc(83.077deg + 0.1deg), #3cc169 110.769deg, #47d46f calc(110.769deg + 0.1deg), #47d46f 138.462deg, #53e278 calc(138.462deg + 0.1deg), #53e278 166.154deg, #5fea82 calc(166.154deg + 0.1deg), #5fea82 193.846deg, #6aea8d calc(193.846deg + 0.1deg), #6aea8d 221.538deg, #74e297 calc(221.538deg + 0.1deg), #74e297 249.231deg, #7dd3a1 calc(249.231deg + 0.1deg), #7dd3a1 276.923deg, #84c1aa calc(276.923deg + 0.1deg), #84c1aa 304.615deg, #89aeb0 calc(304.615deg + 0.1deg), #89aeb0 332.308deg, #8d9fb4 calc(332.308deg + 0.1deg) 360.000deg);

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            <!-- https://grabient.com/_gEggLvgIlgENf9Uf9ggFOfy5f4Cf6SgO6gAt?style=angularSwatches&steps=13&angle=315 -->
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              <filter id="antiGap">
                <feGaussianBlur in="SourceGraphic" stdDeviation="0.3" />
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["#1c9565", "#259f63", "#30ae64", "#3cc169", "#47d46f", "#53e278", "#5fea82", "#6aea8d", "#74e297", "#7dd3a1", "#84c1aa", "#89aeb0", "#8d9fb4"]

// https://grabient.com/_gEggLvgIlgENf9Uf9ggFOfy5f4Cf6SgO6gAt?style=angularSwatches&steps=13&angle=315
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 13.0;
const float ANGLE = 315.0;

vec3 palette(float t) {
    vec3 a = vec3(0.288, 0.751, 0.549);
    vec3 b = vec3(0.269, -0.172, -0.160);
    vec3 c = vec3(0.334, -0.839, -0.510);
    vec3 d = vec3(-0.366, 0.954, 0.045);
    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);
}

[
  [0.288, 0.751, 0.549],
  [0.269, -0.172, -0.160],
  [0.334, -0.839, -0.510],
  [-0.366, 0.954, 0.045]
]