/* https://grabient.com/_gF0gIDgMIgE-gEof4Of5kf7zgCwgVTf3Vfw6?style=radialSwatches&steps=5&angle=210 */
background: radial-gradient(circle, #2a3c4a 0.000%, #2a3c4a 20.000%, #5a4d56 calc(20.000% + 1px), #5a4d56 40.000%, #8c676a calc(40.000% + 1px), #8c676a 60.000%, #ab8786 calc(60.000% + 1px), #ab8786 80.000%, #aca5a6 calc(80.000% + 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/_gF0gIDgMIgE-gEof4Of5kf7zgCwgVTf3Vfw6?style=radialSwatches&steps=5&angle=210 -->
<defs>
<clipPath id="ringBounds">
<rect x="0" y="0" width="800" height="400" />
</clipPath>
</defs>
<g clip-path="url(#ringBounds)"><path d="M 310.557,200.000 A 89.443,89.443 0 1 1 489.443,200.000 A 89.443,89.443 0 1 1 310.557,200.000 Z" fill="#2a3c4a" fill-opacity="1.000" /><path d="M 221.115,200.000 A 178.885,178.885 0 1 1 578.885,200.000 A 178.885,178.885 0 1 1 221.115,200.000 Z M 310.557,200.000 A 89.443,89.443 0 1 0 489.443,200.000 A 89.443,89.443 0 1 0 310.557,200.000 Z" fill="#5a4d56" fill-opacity="1.000" /><path d="M 131.672,200.000 A 268.328,268.328 0 1 1 668.328,200.000 A 268.328,268.328 0 1 1 131.672,200.000 Z M 221.115,200.000 A 178.885,178.885 0 1 0 578.885,200.000 A 178.885,178.885 0 1 0 221.115,200.000 Z" fill="#8c676a" fill-opacity="1.000" /><path d="M 42.229,200.000 A 357.771,357.771 0 1 1 757.771,200.000 A 357.771,357.771 0 1 1 42.229,200.000 Z M 131.672,200.000 A 268.328,268.328 0 1 0 668.328,200.000 A 268.328,268.328 0 1 0 131.672,200.000 Z" fill="#ab8786" fill-opacity="1.000" /><path d="M -47.214,200.000 A 447.214,447.214 0 1 1 847.214,200.000 A 447.214,447.214 0 1 1 -47.214,200.000 Z M 42.229,200.000 A 357.771,357.771 0 1 0 757.771,200.000 A 357.771,357.771 0 1 0 42.229,200.000 Z" fill="#aca5a6" fill-opacity="1.000" /></g>
</svg>
["#2a3c4a", "#5a4d56", "#8c676a", "#ab8786", "#aca5a6"]
// https://grabient.com/_gF0gIDgMIgE-gEof4Of5kf7zgCwgVTf3Vfw6?style=radialSwatches&steps=5&angle=210
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 5.0;
vec3 palette(float t) {
vec3 a = vec3(0.372, 0.515, 0.776);
vec3 b = vec3(0.318, 0.296, -0.498);
vec3 c = vec3(-0.412, -0.269, 0.176);
vec3 d = vec3(1.363, -0.555, -0.966);
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;
// circle to the farthest corner (CSS default)
float t = length(p) / length(0.5 * iResolution.xy);
fragColor = vec4(stops(t), 1.0);
}
[
[0.372, 0.515, 0.776],
[0.318, 0.296, -0.498],
[-0.412, -0.269, 0.176],
[1.363, -0.555, -0.966]
]