Gradient palette editor — #070805 to #161e1c

/* https://grabient.com/_gBagBagCOgBFgBFgB7gUXgV_gMygG4gGbgHZ?style=linearGradient&steps=8&angle=270 */

background: linear-gradient(270deg, #070805 0.000%, #0b0a0a 14.286%, #1e1e1c 28.571%, #292832 42.857%, #1e1b41 57.143%, #0b0842 71.429%, #060a33 85.714%, #161e1c 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gBagBagCOgBFgBFgB7gUXgV_gMygG4gGbgHZ?style=linearGradient&steps=8&angle=270 -->
            <defs>
              <linearGradient id="gradient" x1="1.000" y1="0.500" x2="0.000" y2="0.500">
        <stop offset="0.000" stop-color="#070805" /><stop offset="0.143" stop-color="#0b0a0a" /><stop offset="0.286" stop-color="#1e1e1c" /><stop offset="0.429" stop-color="#292832" /><stop offset="0.571" stop-color="#1e1b41" /><stop offset="0.714" stop-color="#0b0842" /><stop offset="0.857" stop-color="#060a33" /><stop offset="1.000" stop-color="#161e1c" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#070805", "#0b0a0a", "#1e1e1c", "#292832", "#1e1b41", "#0b0842", "#060a33", "#161e1c"]

// https://grabient.com/_gBagBagCOgBFgBFgB7gUXgV_gMygG4gGbgHZ?style=linearGradient&steps=8&angle=270
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 8.0;
const float ANGLE = 270.0;

vec3 palette(float t) {
    vec3 a = vec3(0.090, 0.090, 0.142);
    vec3 b = vec3(0.069, 0.069, 0.123);
    vec3 c = vec3(1.303, 1.407, 0.818);
    vec3 d = vec3(0.440, 0.411, 0.473);
    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);
}

[
  [0.090, 0.090, 0.142],
  [0.069, 0.069, 0.123],
  [1.303, 1.407, 0.818],
  [0.440, 0.411, 0.473]
]