/* https://grabient.com/_gGggAAgGVgExgAAgC7gNpgBhgK8gG7gAAgMv?style=linearSwatches&steps=6&angle=0 */ background: linear-gradient(0deg, #21007a 0.000%, #21007a 16.667%, #310095 calc(16.667% + 1px), #310095 33.333%, #7e008f calc(33.333% + 1px), #7e008f 50.000%, #b6006c calc(50.000% + 1px), #b6006c 66.667%, #9b0046 calc(66.667% + 1px), #9b0046 83.333%, #4b0038 calc(83.333% + 1px) 100.000%);

// https://grabient.com/_gGggAAgGVgExgAAgC7gNpgBhgK8gG7gAAgMv?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(0.416, 0.000, 0.405); vec3 b = vec3(0.305, 0.000, 0.187); vec3 c = vec3(0.873, 0.097, 0.700); vec3 d = vec3(0.443, 0.000, 0.815); 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); }

Gradient palette editor — #21007a to #4b0038