/* https://grabient.com/_gL0gAAgHegMfgAAgZEgBngBmgBjgDSgAAgKt?style=linearSwatches&steps=5&angle=0 */ background: linear-gradient(0deg, #f30000 0.000%, #f30000 20.000%, #d30014 calc(20.000% + 1px), #d30014 40.000%, #b20052 calc(40.000% + 1px), #b20052 60.000%, #920092 calc(60.000% + 1px), #920092 80.000%, #7200d1 calc(80.000% + 1px) 100.000%);

// https://grabient.com/_gL0gAAgHegMfgAAgZEgBngBmgBjgDSgAAgKt?style=linearSwatches&steps=5&angle=0 // cosine gradient palette — https://iquilezles.org/articles/palettes/ const float STEPS = 5.0; const float ANGLE = 0.0; vec3 palette(float t) { vec3 a = vec3(0.756, 0.000, 0.478); vec3 b = vec3(0.799, 0.000, 1.604); vec3 c = vec3(0.103, 0.102, 0.099); vec3 d = vec3(0.210, 0.000, 0.685); 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 — #f30000 to #7200d1