/* https://grabient.com/_gIbfqpgH1gB6gifgHdgW1gBjgH_gIIgNygIX?style=linearGradient&steps=7&angle=315 */

background: linear-gradient(315deg, #6b4209 0.000%, #8c6827 16.667%, #a9885e 33.333%, #89a39e 50.000%, #6ab8d6 66.667%, #87c8f6 83.333%, #a8d2f4 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gIbfqpgH1gB6gifgHdgW1gBjgH_gIIgNygIX?style=linearGradient&steps=7&angle=315 -->
            <defs>
              <linearGradient id="gradient" x1="0.854" y1="0.854" x2="0.146" y2="0.146">
        <stop offset="0.000" stop-color="#6b4209" /><stop offset="0.167" stop-color="#8c6827" /><stop offset="0.333" stop-color="#a9885e" /><stop offset="0.500" stop-color="#89a39e" /><stop offset="0.667" stop-color="#6ab8d6" /><stop offset="0.833" stop-color="#87c8f6" /><stop offset="1.000" stop-color="#a8d2f4" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#6b4209", "#8c6827", "#a9885e", "#89a39e", "#6ab8d6", "#87c8f6", "#a8d2f4"]

// https://grabient.com/_gIbfqpgH1gB6gifgHdgW1gBjgH_gIIgNygIX?style=linearGradient&steps=7&angle=315
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 7.0;
const float ANGLE = 315.0;

vec3 palette(float t) {
    vec3 a = vec3(0.539, -1.367, 0.501);
    vec3 b = vec3(0.122, 2.207, 0.477);
    vec3 c = vec3(1.461, 0.099, 0.511);
    vec3 d = vec3(0.520, 0.882, 0.535);
    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);
}

[
  [0.539, -1.367, 0.501],
  [0.122, 2.207, 0.477],
  [1.461, 0.099, 0.511],
  [0.520, 0.882, 0.535]
]

Gradient palette editor — #6b4209 to #a8d2f4