/* https://grabient.com/_fm4fYUgD_ghegxBgBxgBngBggVNgPGgPDgG5?style=linearGradient&steps=6&angle=90 */

background: linear-gradient(90deg, #7c8326 0.000%, #86933a 20.000%, #88985e 40.000%, #809240 60.000%, #6f7f25 80.000%, #56624a 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_fm4fYUgD_ghegxBgBxgBngBggVNgPGgPDgG5?style=linearGradient&steps=6&angle=90 -->
            <defs>
              <linearGradient id="gradient" x1="0.000" y1="0.500" x2="1.000" y2="0.500">
        <stop offset="0.000" stop-color="#7c8326" /><stop offset="0.200" stop-color="#86933a" /><stop offset="0.400" stop-color="#88985e" /><stop offset="0.600" stop-color="#809240" /><stop offset="0.800" stop-color="#6f7f25" /><stop offset="1.000" stop-color="#56624a" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#7c8326", "#86933a", "#88985e", "#809240", "#6f7f25", "#56624a"]

// https://grabient.com/_fm4fYUgD_ghegxBgBxgBngBggVNgPGgPDgG5?style=linearGradient&steps=6&angle=90
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 6.0;
const float ANGLE = 90.0;

vec3 palette(float t) {
    vec3 a = vec3(-1.608, -2.540, 0.255);
    vec3 b = vec3(2.142, 3.137, 0.113);
    vec3 c = vec3(0.103, 0.096, 1.357);
    vec3 d = vec3(0.966, 0.963, 0.441);
    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);
}

[
  [-1.608, -2.540, 0.255],
  [2.142, 3.137, 0.113],
  [0.103, 0.096, 1.357],
  [0.966, 0.963, 0.441]
]

Gradient palette editor — #7c8326 to #56624a