# Royal Blue to Sienna gradient

Royal Blue (#4169e1) to Sienna (#a0522d), interpolated perceptually. The engine's pick for this pair is oklab.

- Page: https://brandsweets.com/gradients/royalblue-to-sienna
- Colors: https://brandsweets.com/colors/royalblue, https://brandsweets.com/colors/sienna
- Reverse: https://brandsweets.com/gradients/sienna-to-royalblue

## OKLab

- CSS: `linear-gradient(135deg in oklab, #4169e1 0%, #a0522d 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#4169e1] to-[#a0522d]`
- Contrast (worst point): white 4.84:1 AA · black 3.74:1 AA-large · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.4169e1-a0522d?a=135

## OKLCH (shorter hue)

- CSS: `linear-gradient(135deg in oklch shorter hue, #4169e1 0%, #a0522d 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#4169e1] to-[#a0522d]`
- Contrast (worst point): white 4.83:1 AA · black 3.72:1 AA-large · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.4169e1-a0522d?a=135&in=oklch&hue=shorter

## Eased (soft)

- CSS: `linear-gradient(135deg in oklab, #4169e1 0%, #4369df 8.28%, #486ad8 16.03%, #506ace 23.35%, #596ac0 30.32%, #636ab1 37.03%, #6d69a0 43.56%, #77678f 50%, #80647c 56.44%, #89606b 62.97%, #915d59 69.68%, #975949 76.65%, #9c553b 83.97%, #9f5331 91.72%, #a0522d 100%)`
- Tailwind: `bg-[linear-gradient(135deg_in_oklab,#4169e1_0%,#4369df_8.28%,#486ad8_16.03%,#506ace_23.35%,#596ac0_30.32%,#636ab1_37.03%,#6d69a0_43.56%,#77678f_50%,#80647c_56.44%,#89606b_62.97%,#915d59_69.68%,#975949_76.65%,#9c553b_83.97%,#9f5331_91.72%,#a0522d_100%)]`
- Contrast (worst point): white 4.84:1 AA · black 3.74:1 AA-large · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.4169e1-a0522d?a=135&e=soft&n=15

## Mesh

- CSS: `radial-gradient(circle farthest-corner at 6.09% 69.31%, oklch(from #4169e1 l c h / 0.7169) 0%, rgb(from #4169e1 r g b / 0) 54.99%), radial-gradient(circle farthest-corner at 41.47% 33.33%, oklch(from #a0522d l c h / 0.8699) 0%, rgb(from #a0522d r g b / 0) 50.31%)`
- Tailwind: `bg-[radial-gradient(circle_farthest-corner_at_6.09%_69.31%,oklch(from_#4169e1_l_c_h_/_0.7169)_0%,rgb(from_#4169e1_r_g_b_/_0)_54.99%),radial-gradient(circle_farthest-corner_at_41.47%_33.33%,oklch(from_#a0522d_l_c_h_/_0.8699)_0%,rgb(from_#a0522d_r_g_b_/_0)_50.31%)]`
- Contrast (worst point): white 5.09:1 AA · black 3.66:1 AA-large · banding low
- Maker: https://brandsweets.com/gradients/new/v1.4169e1-a0522d?k=mesh&seed=royalblue-to-sienna

## Gradient maker

Every maker URL is the gradient's state: `/gradients/new/v1.<hex>-<hex>[_pos]?a=135&in=oklch&hue=shorter&e=soft&g=8`. Hand one to a human, let them refine, and read the link they return.

## Connect an agent

Point any MCP client at the BrandSweets gradients endpoint for the same engine and corpus:

- Endpoint: https://mcp.brandsweets.com/gradients/mcp
- Tools: `make_gradient` (2–5 colours → CSS with the interpolation space, Tailwind v4, SVG, PNG URL, DTCG token + the contrast/banding/gamut report), `brand_gradients` (brand slug or palette → brand gradient, hero, button, variants).
- Resource: `gradients://corpus` — the whole bundled corpus as JSON.