/* https://grabient.com/_gIdgA2gC_gFagCAgAygEjgFzgHOggFgZOhD3?style=linearSwatches&steps=10&angle=180 */ background: linear-gradient(180deg, #dd002a 0.000%, #dd002a 10.000%, #d60027 calc(10.000% + 1px), #d60027 20.000%, #cb0325 calc(20.000% + 1px), #cb0325 30.000%, #be0b24 calc(30.000% + 1px), #be0b24 40.000%, #ae1425 calc(40.000% + 1px), #ae1425 50.000%, #9d1c26 calc(50.000% + 1px), #9d1c26 60.000%, #8c2329 calc(60.000% + 1px), #8c2329 70.000%, #7a282d calc(70.000% + 1px), #7a282d 80.000%, #692c31 calc(80.000% + 1px), #692c31 90.000%, #592e35 calc(90.000% + 1px) 100.000%);

// https://grabient.com/_gIdgA2gC_gFagCAgAygEjgFzgHOggFgZOhD3?style=linearSwatches&steps=10&angle=180 // cosine gradient palette — https://iquilezles.org/articles/palettes/ const float STEPS = 10.0; const float ANGLE = 180.0; vec3 palette(float t) { vec3 a = vec3(0.541, 0.054, 0.191); vec3 b = vec3(0.346, 0.128, 0.050); vec3 c = vec3(0.291, 0.371, 0.462); vec3 d = vec3(2.053, 1.614, 4.343); 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 — #dd002a to #592e35