/* https://grabient.com/_gHpgD_gAAgWGgM0gAAgBogBlgBogLMgKpgAA?style=linearSwatches&steps=5&angle=90 */ background: linear-gradient(90deg, #300000 0.000%, #300000 20.000%, #6b0800 calc(20.000% + 1px), #6b0800 40.000%, #a52900 calc(40.000% + 1px), #a52900 60.000%, #df4a00 calc(60.000% + 1px), #df4a00 80.000%, #ff6b00 calc(80.000% + 1px) 100.000%);

// https://grabient.com/_gHpgD_gAAgWGgM0gAAgBogBlgBogLMgKpgAA?style=linearSwatches&steps=5&angle=90 // cosine gradient palette — https://iquilezles.org/articles/palettes/ const float STEPS = 5.0; const float ANGLE = 90.0; vec3 palette(float t) { vec3 a = vec3(0.489, 0.255, 0.000); vec3 b = vec3(1.414, 0.820, 0.000); vec3 c = vec3(0.104, 0.101, 0.104); vec3 d = vec3(0.716, 0.681, 0.000); 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 — #300000 to #ff6b00