/* https://grabient.com/_gLagvUhqpgEjguchqAgIRgBlgBggJNgIIgHf */
background: linear-gradient(90deg, #7b1419 0.000%, #99220b 16.667%, #c1390f 33.333%, #e75723 50.000%, #ff7e49 66.667%, #ffab80 83.333%, #f1dfc7 100.000%);
<svg xmlns="http://www.w3.org/2000/svg" width="800" height="400" viewBox="0 0 800 400" preserveAspectRatio="none">
<!-- https://grabient.com/_gLagvUhqpgEjguchqAgIRgBlgBggJNgIIgHf -->
<defs>
<linearGradient id="gradient" x1="0.000" y1="0.500" x2="1.000" y2="0.500">
<stop offset="0.000" stop-color="#7b1419" /><stop offset="0.167" stop-color="#99220b" /><stop offset="0.333" stop-color="#c1390f" /><stop offset="0.500" stop-color="#e75723" /><stop offset="0.667" stop-color="#ff7e49" /><stop offset="0.833" stop-color="#ffab80" /><stop offset="1.000" stop-color="#f1dfc7" />
</linearGradient>
</defs>
<rect x="0" y="0" width="800" height="400" fill="url(#gradient)" />
</svg>
["#7b1419", "#99220b", "#c1390f", "#e75723", "#ff7e49", "#ffab80", "#f1dfc7"]
// https://grabient.com/_gLagvUhqpgEjguchqAgIRgBlgBggJNgIIgHf
// cosine gradient palette — https://iquilezles.org/articles/palettes/
const float STEPS = 7.0;
const float ANGLE = 90.0;
vec3 palette(float t) {
vec3 a = vec3(0.730, 3.028, 6.825);
vec3 b = vec3(0.291, 2.972, 6.784);
vec3 c = vec3(0.529, 0.101, 0.096);
vec3 d = vec3(0.589, 0.520, 0.479);
return a + b * cos(6.283185 * (c * t + d));
}
// N stops sampled from the palette, blended like the CSS gradient
vec3 stops(float t) {
float n = STEPS - 1.0;
float x = clamp(t, 0.0, 1.0) * n;
return mix(palette(floor(x) / n), palette(min(floor(x) + 1.0, n) / n), fract(x));
}
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);
}
[
[0.730, 3.028, 6.825],
[0.291, 2.972, 6.784],
[0.529, 0.101, 0.096],
[0.589, 0.520, 0.479]
]