/* https://grabient.com/_gDIgLrgJYgKDgD6gKDgBlgF0gBjgDCgI4gKz?style=linearGradient&steps=6&angle=180 */

background: linear-gradient(180deg, #6c845e 0.000%, #589771 20.000%, #43b185 40.000%, #2ecf99 60.000%, #1ae9ae 80.000%, #05fac2 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gDIgLrgJYgKDgD6gKDgBlgF0gBjgDCgI4gKz?style=linearGradient&steps=6&angle=180 -->
            <defs>
              <linearGradient id="gradient" x1="0.500" y1="0.000" x2="0.500" y2="1.000">
        <stop offset="0.000" stop-color="#6c845e" /><stop offset="0.200" stop-color="#589771" /><stop offset="0.400" stop-color="#43b185" /><stop offset="0.600" stop-color="#2ecf99" /><stop offset="0.800" stop-color="#1ae9ae" /><stop offset="1.000" stop-color="#05fac2" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#6c845e", "#589771", "#43b185", "#2ecf99", "#1ae9ae", "#05fac2"]

// https://grabient.com/_gDIgLrgJYgKDgD6gKDgBlgF0gBjgDCgI4gKz?style=linearGradient&steps=6&angle=180
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 6.0;
const float ANGLE = 180.0;

vec3 palette(float t) {
    vec3 a = vec3(0.200, 0.747, 0.600);
    vec3 b = vec3(0.643, 0.250, 0.643);
    vec3 c = vec3(0.101, 0.372, 0.099);
    vec3 d = vec3(0.194, 0.568, 0.691);
    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);
}

[
  [0.200, 0.747, 0.600],
  [0.643, 0.250, 0.643],
  [0.101, 0.372, 0.099],
  [0.194, 0.568, 0.691]
]

Gradient palette editor — #6c845e to #05fac2