Dark olive green to drab to green gray gradient palette editor

/* https://grabient.com/_gFbfhegEygCbgn1gCCgPDgBggIkgK6gOzgKS?style=linearGradient&steps=6&angle=135 */

background: linear-gradient(135deg, #4c743c 0.000%, #778952 20.000%, #7b9566 40.000%, #52976f 60.000%, #329069 80.000%, #448057 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gFbfhegEygCbgn1gCCgPDgBggIkgK6gOzgKS?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="#4c743c" /><stop offset="0.200" stop-color="#778952" /><stop offset="0.400" stop-color="#7b9566" /><stop offset="0.600" stop-color="#52976f" /><stop offset="0.800" stop-color="#329069" /><stop offset="1.000" stop-color="#448057" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#4c743c", "#778952", "#7b9566", "#52976f", "#329069", "#448057"]

// https://grabient.com/_gFbfhegEygCbgn1gCCgPDgBggIkgK6gOzgKS?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(0.347, -1.954, 0.306);
    vec3 b = vec3(0.155, 2.549, 0.130);
    vec3 c = vec3(0.963, 0.096, 0.548);
    vec3 d = vec3(0.698, 0.947, 0.658);
    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);
}

[
  [0.347, -1.954, 0.306],
  [0.155, 2.549, 0.130],
  [0.963, 0.096, 0.548],
  [0.698, 0.947, 0.658]
]