Rainbow merlot to twilight blue to dark aquamarine to shamrock green gradient palette editor

/* https://grabient.com/_gEAgWpe3ugDvgWUhQKgLSgDHgBhgNvgHTgO3?style=linearSwatches&steps=6&angle=0 */

background: linear-gradient(0deg, #6d0d43 0.000%, #6d0d43 16.667%, #7e066a calc(16.667% + 1px), #7e066a 33.333%, #5f157e calc(33.333% + 1px), #5f157e 50.000%, #2a3a7e calc(50.000% + 1px), #2a3a7e 66.667%, #07726b calc(66.667% + 1px), #07726b 83.333%, #10ba45 calc(83.333% + 1px) 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gEAgWpe3ugDvgWUhQKgLSgDHgBhgNvgHTgO3?style=linearSwatches&steps=6&angle=0 -->
            <defs>
              <clipPath id="bounds">
                <rect x="0" y="0" width="800" height="400" />
              </clipPath>
            </defs>
            <g clip-path="url(#bounds)"><path d="M 847.214,400.000 L -47.214,400.000 L -47.214,333.333 L 847.214,333.333 Z" fill="#6d0d43" fill-opacity="1.000" /><path d="M 847.214,333.333 L -47.214,333.333 L -47.214,266.667 L 847.214,266.667 Z" fill="#7e066a" fill-opacity="1.000" /><path d="M 847.214,266.667 L -47.214,266.667 L -47.214,200.000 L 847.214,200.000 Z" fill="#5f157e" fill-opacity="1.000" /><path d="M 847.214,200.000 L -47.214,200.000 L -47.214,133.333 L 847.214,133.333 Z" fill="#2a3a7e" fill-opacity="1.000" /><path d="M 847.214,133.333 L -47.214,133.333 L -47.214,66.667 L 847.214,66.667 Z" fill="#07726b" fill-opacity="1.000" /><path d="M 847.214,66.667 L -47.214,66.667 L -47.214,-0.000 L 847.214,0.000 Z" fill="#10ba45" fill-opacity="1.000" /></g>
          </svg>

["#6d0d43", "#7e066a", "#5f157e", "#2a3a7e", "#07726b", "#10ba45"]

// https://grabient.com/_gEAgWpe3ugDvgWUhQKgLSgDHgBhgNvgHTgO3?style=linearSwatches&steps=6&angle=0
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 6.0;
const float ANGLE = 0.0;

vec3 palette(float t) {
    vec3 a = vec3(0.256, 1.449, -4.626);
    vec3 b = vec3(0.239, 1.428, 5.130);
    vec3 c = vec3(0.722, 0.199, 0.097);
    vec3 d = vec3(0.879, 0.467, 0.951);
    return a + b * cos(6.283185 * (c * t + d));
}

// N hard swatches sampled from the palette
vec3 stops(float t) {
    float i = min(floor(clamp(t, 0.0, 1.0) * STEPS), STEPS - 1.0);
    return palette(i / (STEPS - 1.0));
}

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);
}

[
  [0.256, 1.449, -4.626],
  [0.239, 1.428, 5.130],
  [0.722, 0.199, 0.097],
  [0.879, 0.467, 0.951]
]