Ugly blue to grayish green to clay gradient palette editor

/* https://grabient.com/_gHGgHIgGEgDGgDCgC7gIRgJ-gIYgYDhJIgrr?style=angularSwatches&steps=13&angle=45 */

background: conic-gradient(from 45deg, #435f70 0.000deg, #435f70 27.692deg, #486f7c calc(27.692deg + 0.1deg), #486f7c 55.385deg, #517f87 calc(55.385deg + 0.1deg), #517f87 83.077deg, #5c8f8e calc(83.077deg + 0.1deg), #5c8f8e 110.769deg, #699b92 calc(110.769deg + 0.1deg), #699b92 138.462deg, #77a392 calc(138.462deg + 0.1deg), #77a392 166.154deg, #84a68f calc(166.154deg + 0.1deg), #84a68f 193.846deg, #91a388 calc(193.846deg + 0.1deg), #91a388 221.538deg, #9b9b7e calc(221.538deg + 0.1deg), #9b9b7e 249.231deg, #a28f73 calc(249.231deg + 0.1deg), #a28f73 276.923deg, #a68065 calc(276.923deg + 0.1deg), #a68065 304.615deg, #a67058 calc(304.615deg + 0.1deg), #a67058 332.308deg, #a2604c calc(332.308deg + 0.1deg) 360.000deg);

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            <!-- https://grabient.com/_gHGgHIgGEgDGgDCgC7gIRgJ-gIYgYDhJIgrr?style=angularSwatches&steps=13&angle=45 -->
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["#435f70", "#486f7c", "#517f87", "#5c8f8e", "#699b92", "#77a392", "#84a68f", "#91a388", "#9b9b7e", "#a28f73", "#a68065", "#a67058", "#a2604c"]

// https://grabient.com/_gHGgHIgGEgDGgDCgC7gIRgJ-gIYgYDhJIgrr?style=angularSwatches&steps=13&angle=45
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 13.0;
const float ANGLE = 45.0;

vec3 palette(float t) {
    vec3 a = vec3(0.454, 0.456, 0.388);
    vec3 b = vec3(0.198, 0.194, 0.187);
    vec3 c = vec3(0.529, 0.638, 0.536);
    vec3 d = vec3(1.539, 4.680, 2.795);
    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);
}

[
  [0.454, 0.456, 0.388],
  [0.198, 0.194, 0.187],
  [0.529, 0.638, 0.536],
  [1.539, 4.680, 2.795]
]