Rainbow silver to apple to plum to sky blue gradient palette editor

/* https://grabient.com/_gIggKzgJsgF2gBtgEogRngdCgTggCmgAUgMv */

background: linear-gradient(90deg, #bbccbc 0.000%, #51a3e9 16.667%, #2f9ea7 33.333%, #7ecb58 50.000%, #deaf71 66.667%, #d697cc 83.333%, #71c4e4 100.000%);

<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
            <!-- https://grabient.com/_gIggKzgJsgF2gBtgEogRngdCgTggCmgAUgMv -->
            <defs>
              <linearGradient id="gradient" x1="0.000" y1="0.500" x2="1.000" y2="0.500">
        <stop offset="0.000" stop-color="#bbccbc" /><stop offset="0.167" stop-color="#51a3e9" /><stop offset="0.333" stop-color="#2f9ea7" /><stop offset="0.500" stop-color="#7ecb58" /><stop offset="0.667" stop-color="#deaf71" /><stop offset="0.833" stop-color="#d697cc" /><stop offset="1.000" stop-color="#71c4e4" />
              </linearGradient>
            </defs>
            <rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
          </svg>

["#bbccbc", "#51a3e9", "#2f9ea7", "#7ecb58", "#deaf71", "#d697cc", "#71c4e4"]

// https://grabient.com/_gIggKzgJsgF2gBtgEogRngdCgTggCmgAUgMv
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 7.0;
const float ANGLE = 90.0;

vec3 palette(float t) {
    vec3 a = vec3(0.544, 0.691, 0.620);
    vec3 b = vec3(0.374, 0.109, 0.296);
    vec3 c = vec3(1.127, 1.858, 1.248);
    vec3 d = vec3(0.166, 0.020, 0.815);
    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);
}

[
  [0.544, 0.691, 0.620],
  [0.374, 0.109, 0.296],
  [1.127, 1.858, 1.248],
  [0.166, 0.020, 0.815]
]