Gradient palette editor — #2b6d0f to #33007a

/* https://grabient.com/_gH-ezzgCegFUhUTgJQgeTgBogG0gHvgPLgLT?style=linearGradient&steps=8&angle=315 */

background: linear-gradient(315deg, #2b6d0f 0.000%, #8e7f49 14.286%, #d5847f 28.571%, #5a7ea8 42.857%, #3d6bbd 57.143%, #c14dbc 71.429%, #b223a4 85.714%, #33007a 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gH-ezzgCegFUhUTgJQgeTgBogG0gHvgPLgLT?style=linearGradient&steps=8&angle=315 -->
            <defs>
              <linearGradient id="gradient" x1="0.854" y1="0.854" x2="0.146" y2="0.146">
        <stop offset="0.000" stop-color="#2b6d0f" /><stop offset="0.143" stop-color="#8e7f49" /><stop offset="0.286" stop-color="#d5847f" /><stop offset="0.429" stop-color="#5a7ea8" /><stop offset="0.571" stop-color="#3d6bbd" /><stop offset="0.714" stop-color="#c14dbc" /><stop offset="0.857" stop-color="#b223a4" /><stop offset="1.000" stop-color="#33007a" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#2b6d0f", "#8e7f49", "#d5847f", "#5a7ea8", "#3d6bbd", "#c14dbc", "#b223a4", "#33007a"]

// https://grabient.com/_gH-ezzgCegFUhUTgJQgeTgBogG0gHvgPLgLT?style=linearGradient&steps=8&angle=315
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 8.0;
const float ANGLE = 315.0;

vec3 palette(float t) {
    vec3 a = vec3(0.510, -4.877, 0.158);
    vec3 b = vec3(0.340, 5.395, 0.592);
    vec3 c = vec3(1.939, 0.104, 0.436);
    vec3 d = vec3(0.495, 0.971, 0.723);
    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);
}

[
  [0.510, -4.877, 0.158],
  [0.340, 5.395, 0.592],
  [1.939, 0.104, 0.436],
  [0.495, 0.971, 0.723]
]