# Telegram gradient

Gradients derived from Telegram'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/telegram-org
- Brand colors: https://brandsweets.com/colors/brands/telegram-org · Brand page: https://brandsweets.com/b/telegram-org
- Palette: primary #2aabee, secondary #318fd3, accents #0088cc
- Source: https://telegram.org (extracted 2026-09-03)

## Brand gradient

ΔE_OK 0.080 < 0.15 between #2aabee and #318fd3 — a 2-stop would read as a flat fill, so this is a tonal ramp of #2aabee.

- CSS: `linear-gradient(135deg in oklch shorter hue, #a1e2ff 0%, #2aabee 50%, #0073b1 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#a1e2ff] via-[#2aabee] to-[#0073b1]`
- Contrast (worst point): white 1.42:1 fail · black 4.09:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.a1e2ff-2aabee-0073b1?a=135&in=oklch&hue=shorter

## Hero background

Chroma ×0.35 so it can carry text; ink black (inkFor at the midpoint). L shifted +0.03 until the ink passes AA at the worst point (4.61:1).

- CSS: `linear-gradient(135deg in oklch shorter hue, #cfe4ee 0%, #8caec5 50%, #5f798e 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#cfe4ee] via-[#8caec5] to-[#5f798e]`
- Contrast (worst point): white 1.31:1 fail · black 4.61:1 AA · banding high · ink #000000
- Maker: https://brandsweets.com/gradients/new/v1.cfe4ee-8caec5-5f798e?a=135&in=oklch&hue=shorter

## 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. Black ink passes AA on the surface and both states (worst 6.27:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #3cb8fc 0%, #109ee0 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#3cb8fc] to-[#109ee0]`
- Contrast (worst point): white 2.22:1 fail · black 6.99:1 AA · banding high · ink #000000
- Maker: https://brandsweets.com/gradients/new/v1.3cb8fc-109ee0?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #49c2ff 0%, #25a8eb 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #2faef1 0%, #0095d6 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #a1e2ff 0%, #2aabee 50%, #0073b1 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#a1e2ff] via-[#2aabee] to-[#0073b1]`
- Contrast (worst point): white 1.42:1 fail · black 4.09:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.a1e2ff-2aabee-0073b1?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, #2aabee 0%, #2bb3c4 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#2aabee] to-[#2bb3c4]`
- Contrast (worst point): white 2.51:1 fail · black 8.13:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.2aabee-2bb3c4?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, #2aabee 0%, #e68325 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#2aabee] to-[#e68325]`
- Contrast (worst point): white 2.38:1 fail · black 7.62:1 AA · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.2aabee-e68325?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, #2aabee 0%, #f962a0 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#2aabee] to-[#f962a0]`
- Contrast (worst point): white 2.57:1 fail · black 7.28:1 AA · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.2aabee-f962a0?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 1.42:1, black 4.09:1 AA-large */
  --brand-gradient: linear-gradient(135deg in oklch shorter hue, #a1e2ff 0%, #2aabee 50%, #0073b1 100%);
  /* hero — worst-case contrast: white 1.31:1, black 4.61:1 AA; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklch shorter hue, #cfe4ee 0%, #8caec5 50%, #5f798e 100%);
  --brand-gradient-hero-ink: #000000;
  /* button — worst-case contrast: white 2.22:1, black 6.99:1 AA */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #3cb8fc 0%, #109ee0 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #49c2ff 0%, #25a8eb 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #2faef1 0%, #0095d6 100%);
  --brand-gradient-button-ink: #000000;
}
```

## 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.