Rainbow neon purple to cornflower blue to warm pink to light gray green gradient palette editor

/* https://grabient.com/_gLSgHZgLwgG5gImgFygXjgW1gT9gDsgKIgAo?style=angularSwatches&steps=12&angle=135 */

background: conic-gradient(from 135deg, #c225ff 0.000deg, #c225ff 30.000deg, #6a94f4 calc(30.000deg + 0.1deg), #6a94f4 60.000deg, #48f1b3 calc(60.000deg + 0.1deg), #48f1b3 90.000deg, #74ff78 calc(90.000deg + 0.1deg), #74ff78 120.000deg, #d0b561 calc(120.000deg + 0.1deg), #d0b561 150.000deg, #ff437b calc(150.000deg + 0.1deg), #ff437b 180.000deg, #ff00b8 calc(180.000deg + 0.1deg), #ff00b8 210.000deg, #de00f8 calc(210.000deg + 0.1deg), #de00f8 240.000deg, #8156ff calc(240.000deg + 0.1deg), #8156ff 270.000deg, #4ac6ff calc(270.000deg + 0.1deg), #4ac6ff 300.000deg, #60ffdc calc(300.000deg + 0.1deg), #60ffdc 330.000deg, #b3e599 calc(330.000deg + 0.1deg) 360.000deg);

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            <!-- https://grabient.com/_gLSgHZgLwgG5gImgFygXjgW1gT9gDsgKIgAo?style=angularSwatches&steps=12&angle=135 -->
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              <filter id="antiGap">
                <feGaussianBlur in="SourceGraphic" stdDeviation="0.3" />
              </filter>
            </defs>
            <g clip-path="url(#squareClip)" filter="url(#antiGap)" shape-rendering="crispEdges">
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["#c225ff", "#6a94f4", "#48f1b3", "#74ff78", "#d0b561", "#ff437b", "#ff00b8", "#de00f8", "#8156ff", "#4ac6ff", "#60ffdc", "#b3e599"]

// https://grabient.com/_gLSgHZgLwgG5gImgFygXjgW1gT9gDsgKIgAo?style=angularSwatches&steps=12&angle=135
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 12.0;
const float ANGLE = 135.0;

vec3 palette(float t) {
    vec3 a = vec3(0.722, 0.473, 0.752);
    vec3 b = vec3(0.441, 0.550, 0.370);
    vec3 c = vec3(1.507, 1.461, 1.277);
    vec3 d = vec3(0.236, 0.648, 0.040);
    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;
    // conic from ANGLE, clockwise from top (CSS convention)
    float t = fract((atan(p.x, p.y) - radians(ANGLE)) / 6.283185);
    fragColor = vec4(stops(t), 1.0);
}

[
  [0.722, 0.473, 0.752],
  [0.441, 0.550, 0.370],
  [1.507, 1.461, 1.277],
  [0.236, 0.648, 0.040]
]