# Roblox gradient

Gradients derived from Roblox's published colour tokens (nominative use; no brand assets). Deterministic: the same values are served as `--brand-gradient*` in the brand's brand.css.

- Page: https://brandsweets.com/gradients/brands/roblox-com
- Brand colors: https://brandsweets.com/colors/brands/roblox-com · Brand page: https://brandsweets.com/b/roblox-com
- Palette: primary #345cfc, secondary #829efc, accents #e75750
- Source: https://roblox.com (extracted 2026-09-05)

## Brand gradient

- CSS: `linear-gradient(135deg in oklab, #345cfc 0%, #829efc 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#345cfc] to-[#829efc]`
- Contrast (worst point): white 2.55:1 fail · black 4.08:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.345cfc-829efc?a=135

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.15 until the ink passes AA at the worst point (4.50:1).

- CSS: `linear-gradient(135deg in oklab, #2f4477 0%, #6b7697 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#2f4477] to-[#6b7697]`
- Contrast (worst point): white 4.50:1 AA · black 2.21:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.2f4477-6b7697?a=135

## Button / CTA

ΔL 0.08 top→bottom in the primary's hue (a lit surface, not a rainbow); hover L +0.03, active L −0.03. L shifted −0.04 so white ink passes AA on the surface and both states (worst 4.63:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #345cfc 0%, #223fe0 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#345cfc] to-[#223fe0]`
- Contrast (worst point): white 5.14:1 AA · black 2.85:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.345cfc-223fe0?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #3b66ff 0%, #284aea 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #2d52f1 0%, #1c34d5 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #7ba3ff 0%, #345cfc 50%, #130fbd 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#7ba3ff] via-[#345cfc] to-[#130fbd]`
- Contrast (worst point): white 2.46:1 fail · black 1.83:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.7ba3ff-345cfc-130fbd?a=135&in=oklch&hue=shorter

## Analogous

Partner hue from the analogous rule at the source colour's lightness.

- CSS: `linear-gradient(135deg in oklab, #345cfc 0%, #0b7bae 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#345cfc] to-[#0b7bae]`
- Contrast (worst point): white 4.69:1 AA · black 4.07:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.345cfc-0b7bae?a=135

## Complementary

Partner hue from the complementary rule at the source colour's lightness. ΔH 180° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

- CSS: `linear-gradient(135deg in oklch shorter hue, #345cfc 0%, #8e6d09 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#345cfc] to-[#8e6d09]`
- Contrast (worst point): white 4.31:1 AA-large · black 4.08:1 AA-large · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.345cfc-8e6d09?a=135&in=oklch&hue=shorter

## Triadic

Partner hue from the triadic rule at the source colour's lightness.

- CSS: `linear-gradient(135deg in oklab, #345cfc 0%, #d50e1c 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#345cfc] to-[#d50e1c]`
- Contrast (worst point): white 5.04:1 AA · black 3.90:1 AA-large · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.345cfc-d50e1c?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 2.55:1, black 4.08:1 AA-large */
  --brand-gradient: linear-gradient(135deg in oklab, #345cfc 0%, #829efc 100%);
  /* hero — worst-case contrast: white 4.50:1 AA, black 2.21:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #2f4477 0%, #6b7697 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 5.14:1 AA, black 2.85:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #345cfc 0%, #223fe0 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #3b66ff 0%, #284aea 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #2d52f1 0%, #1c34d5 100%);
  --brand-gradient-button-ink: #ffffff;
}
```

## 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.