Teal to blue gray to brown gray gradient palette editor

/* https://grabient.com/_fzdgH7gH_gVFgBVgBUgBjgNLgJygN6gEbgKr?style=linearGradient&steps=6&angle=135 */

background: linear-gradient(135deg, #3c7d7a 0.000%, #556d8a 20.000%, #6a7296 40.000%, #7a8796 60.000%, #85968b 80.000%, #8a917b 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_fzdgH7gH_gVFgBVgBUgBjgNLgJygN6gEbgKr?style=linearGradient&steps=6&angle=135 -->
            <defs>
              <linearGradient id="gradient" x1="0.146" y1="0.146" x2="0.854" y2="0.854">
        <stop offset="0.000" stop-color="#3c7d7a" /><stop offset="0.200" stop-color="#556d8a" /><stop offset="0.400" stop-color="#6a7296" /><stop offset="0.600" stop-color="#7a8796" /><stop offset="0.800" stop-color="#85968b" /><stop offset="1.000" stop-color="#8a917b" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#3c7d7a", "#556d8a", "#6a7296", "#7a8796", "#85968b", "#8a917b"]

// https://grabient.com/_fzdgH7gH_gVFgBVgBUgBjgNLgJygN6gEbgKr?style=linearGradient&steps=6&angle=135
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 6.0;
const float ANGLE = 135.0;

vec3 palette(float t) {
    vec3 a = vec3(-0.803, 0.507, 0.511);
    vec3 b = vec3(1.349, 0.085, 0.084);
    vec3 c = vec3(0.099, 0.843, 0.626);
    vec3 d = vec3(0.890, 0.283, 0.683);
    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);
}

[
  [-0.803, 0.507, 0.511],
  [1.349, 0.085, 0.084],
  [0.099, 0.843, 0.626],
  [0.890, 0.283, 0.683]
]