# #813ff3

A color — cool, vivid, technical, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#813ff3`
- RGB: rgb(129, 63, 243)
- HSL: hsl(262, 88%, 60%)
- OKLCH: oklch(0.557 0.248 293.3)
- Relative luminance: 0.1469
- Nearest named color: Candy Grape Fizz (#7755ee, Δ 4.04) — https://brandsweets.com/colors/candy-grape-fizz
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/813ff3

## Tints & shades

- Tints (toward white): #8e52f4, #9a66f5, #a474f6, #b087f7, #bd9af9, #c9aefa, #d6c1fb, #e0cffc, #ece2fd, #f9f5fe
- Shades (toward black): #6e22f1, #600feb, #540dce, #4a0cb6, #3e0a99, #33087d, #290665, #1d0548, #140330, #080113

## Harmonies

- Complementary: #b1f33f
- Analogous: #3f57f3, #db3ff3
- Triadic: #f3813f, #3ff381
- Split-complementary: #f3db3f, #57f33f
- Tetradic: #f33f57, #b1f33f, #3ff3db

## Colors that go with #813ff3

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #813ff3 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/olive
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #813ff3: 3 real palettes, including Render's brand system and Calm's brand system, as the supporting colour. Seen in: Render (https://brandsweets.com/colors/brands/render-com), Calm (https://brandsweets.com/colors/brands/calm-com), Kraken (https://brandsweets.com/colors/brands/kraken-com). — https://brandsweets.com/colors/deepskyblue
- **Midnight Blue** #191970 [pool] — 3 real palettes, including Lavender Haze and Discord's brand system put Midnight Blue beside #813ff3, as that palette's text colour. Seen in: Lavender Haze (https://brandsweets.com/palettes/playful#lavender-haze), Discord (https://brandsweets.com/colors/brands/discord), Kraken (https://brandsweets.com/colors/brands/kraken-com). — https://brandsweets.com/colors/midnightblue
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #813ff3's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Yahoo (https://brandsweets.com/colors/brands/yahoo-com), Stripe (https://brandsweets.com/colors/brands/stripe). — https://brandsweets.com/colors/royalblue
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #813ff3 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Stripe (https://brandsweets.com/colors/brands/stripe), Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/teal
- **Forest Green** #228b22 [harmony: split] — Forest Green is a split-complement of #813ff3: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/forestgreen
- **Charcoal** #36454f [role] — Charcoal is the text near-black for #813ff3: softer than #000 and cool enough to feel like part of the same palette. — https://brandsweets.com/colors/charcoal
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #813ff3: two real palettes: Mastodon hosted on mastodon.social's brand system and Roblox's brand system, as the supporting colour. Seen in: Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Roblox (https://brandsweets.com/colors/brands/roblox-com). — https://brandsweets.com/colors/cornflowerblue

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 5.33:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #6819f0 (7.03:1)
- On black (#000000): 3.94:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #8e52f4 (4.66:1); AA: background → #ededed (4.55:1); AAA: text → #aa7ef7 (7.04:1)

## Brands using this color

- **Fly.io** — primary #7c3aed (Δ 1.565) — https://brandsweets.com/colors/brands/fly-io
- **Fly.io** — secondary #7c3aed (Δ 1.565) — https://brandsweets.com/colors/brands/fly-io

## Curated palettes containing it

- **Circuit** (technical, vivid, bold) — #7c3aed, #0a0a0a, #06b6d4, #ffffff — Violet plus cyan is the current AI-product signal — pair it with pure black type to keep it from going candy. — tool: https://brandsweets.com/palettes/new/7c3aed-0a0a0a-06b6d4-ffffff — collection: https://brandsweets.com/palettes/technical

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/813ff3-af9cc4-dfce4e-2a1f2d-e9eaf1?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#813ff3" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.