Dark brown to sea blue to turquoise gradient palette editor

/* https://grabient.com/_f9KgH-gB7f5cgGQf1vf8Vf5bgEKf5if4IgDW */

background: linear-gradient(90deg, #2d1c00 0.000%, #382728 16.667%, #3d4356 33.333%, #3b6b7f 50.000%, #3298a1 66.667%, #24c0b9 83.333%, #11ddc6 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_f9KgH-gB7f5cgGQf1vf8Vf5bgEKf5if4IgDW -->
            <defs>
              <linearGradient id="gradient" x1="0.000" y1="0.500" x2="1.000" y2="0.500">
        <stop offset="0.000" stop-color="#2d1c00" /><stop offset="0.167" stop-color="#382728" /><stop offset="0.333" stop-color="#3d4356" /><stop offset="0.500" stop-color="#3b6b7f" /><stop offset="0.667" stop-color="#3298a1" /><stop offset="0.833" stop-color="#24c0b9" /><stop offset="1.000" stop-color="#11ddc6" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#2d1c00", "#382728", "#3d4356", "#3b6b7f", "#3298a1", "#24c0b9", "#11ddc6"]

// https://grabient.com/_f9KgH-gB7f5cgGQf1vf8Vf5bgEKf5if4IgDW
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 7.0;
const float ANGLE = 90.0;

vec3 palette(float t) {
    vec3 a = vec3(-0.182, 0.510, 0.123);
    vec3 b = vec3(-0.420, 0.400, -0.657);
    vec3 c = vec3(-0.235, -0.421, 0.266);
    vec3 d = vec3(-0.414, -0.504, 0.214);
    return a + b * cos(6.283185 * (c * t + d));
}

// N stops sampled from the palette, blended like the CSS gradient
vec3 stops(float t) {
    float n = STEPS - 1.0;
    float x = clamp(t, 0.0, 1.0) * n;
    return mix(palette(floor(x) / n), palette(min(floor(x) + 1.0, n) / n), fract(x));
}

void mainImage(out vec4 fragColor, in vec2 fragCoord) {
    vec2 p = fragCoord - 0.5 * iResolution.xy;
    // CSS angle: 0 = up, clockwise; span = CSS gradient-line length
    vec2 dir = vec2(sin(radians(ANGLE)), cos(radians(ANGLE)));
    float len = abs(iResolution.x * dir.x) + abs(iResolution.y * dir.y);
    float t = dot(p, dir) / len + 0.5;
    fragColor = vec4(stops(t), 1.0);
}

[
  [-0.182, 0.510, 0.123],
  [-0.420, 0.400, -0.657],
  [-0.235, -0.421, 0.266],
  [-0.414, -0.504, 0.214]
]