Gradient palette editor — #863e04 to #86c3b5

/* https://grabient.com/_gKcgH2gFvgCQgEMgHPgP9gHwgENgHegIbgJl?style=linearGradient&steps=7&angle=225 */

background: linear-gradient(225deg, #863e04 0.000%, #944f1d 16.667%, #ba6d3b 33.333%, #cf905c 50.000%, #beaf7d 66.667%, #99c19b 83.333%, #86c3b5 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gKcgH2gFvgCQgEMgHPgP9gHwgENgHegIbgJl?style=linearGradient&steps=7&angle=225 -->
            <defs>
              <linearGradient id="gradient" x1="0.854" y1="0.146" x2="0.146" y2="0.854">
        <stop offset="0.000" stop-color="#863e04" /><stop offset="0.167" stop-color="#944f1d" /><stop offset="0.333" stop-color="#ba6d3b" /><stop offset="0.500" stop-color="#cf905c" /><stop offset="0.667" stop-color="#beaf7d" /><stop offset="0.833" stop-color="#99c19b" /><stop offset="1.000" stop-color="#86c3b5" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#863e04", "#944f1d", "#ba6d3b", "#cf905c", "#beaf7d", "#99c19b", "#86c3b5"]

// https://grabient.com/_gKcgH2gFvgCQgEMgHPgP9gHwgENgHegIbgJl?style=linearGradient&steps=7&angle=225
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 7.0;
const float ANGLE = 225.0;

vec3 palette(float t) {
    vec3 a = vec3(0.668, 0.502, 0.367);
    vec3 b = vec3(0.144, 0.268, 0.463);
    vec3 c = vec3(1.021, 0.496, 0.269);
    vec3 d = vec3(0.478, 0.539, 0.613);
    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);
}

[
  [0.668, 0.502, 0.367],
  [0.144, 0.268, 0.463],
  [1.021, 0.496, 0.269],
  [0.478, 0.539, 0.613]
]