Gradient palette editor — #51422c to #f6e5b1

/* https://grabient.com/_gI3gI7gHJgGTgFagEcgFHgHigJWgKEgI7gHv?style=linearGradient&steps=6&angle=135 */

background: linear-gradient(135deg, #51422c 0.000%, #77663e 20.000%, #a1996d 40.000%, #c8caa0 60.000%, #e6e7bc 80.000%, #f6e5b1 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gI3gI7gHJgGTgFagEcgFHgHigJWgKEgI7gHv?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="#51422c" /><stop offset="0.200" stop-color="#77663e" /><stop offset="0.400" stop-color="#a1996d" /><stop offset="0.600" stop-color="#c8caa0" /><stop offset="0.800" stop-color="#e6e7bc" /><stop offset="1.000" stop-color="#f6e5b1" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#51422c", "#77663e", "#a1996d", "#c8caa0", "#e6e7bc", "#f6e5b1"]

// https://grabient.com/_gI3gI7gHJgGTgFagEcgFHgHigJWgKEgI7gHv?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(0.567, 0.571, 0.457);
    vec3 b = vec3(0.403, 0.346, 0.284);
    vec3 c = vec3(0.327, 0.482, 0.598);
    vec3 d = vec3(0.644, 0.571, 0.495);
    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);
}

[
  [0.567, 0.571, 0.457],
  [0.403, 0.346, 0.284],
  [0.327, 0.482, 0.598],
  [0.644, 0.571, 0.495]
]