# #813bb0

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

## Values

- Hex: `#813bb0`
- RGB: rgb(129, 59, 176)
- HSL: hsl(276, 50%, 46%)
- OKLCH: oklch(0.5 0.182 308.7)
- Relative luminance: 0.1093
- Nearest named color: Fuchsia Nebula (#7722aa, Δ 4.812) — https://brandsweets.com/colors/fuchsia-nebula
- Moods: cool, modern
- Page: https://brandsweets.com/colors/813bb0

## Tints & shades

- Tints (toward white): #8f44c1, #9a57c7, #a86ecf, #b381d5, #bf94db, #caa7e2, #d6bae8, #e3d1f0, #efe4f6, #faf7fc
- Shades (toward black): #7636a1, #6b3091, #5d2a7e, #51256f, #462060, #3b1b50, #301641, #220f2e, #160a1f, #0b050f

## Harmonies

- Complementary: #6ab03b
- Analogous: #463bb0, #b03ba4
- Triadic: #b0813b, #3bb081
- Split-complementary: #a4b03b, #3bb046
- Tetradic: #b0463b, #6ab03b, #3ba4b0

## Colors that go with #813bb0

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

- **Denim** #1560bd [pool] — Designers have shipped Denim with #813bb0: 4 real palettes, including Linkedin's brand system and Peacock, as the lead colour. Seen in: Linkedin (https://brandsweets.com/colors/brands/linkedin-com), Peacock (https://brandsweets.com/palettes/vivid#peacock), Slack (https://brandsweets.com/colors/brands/slack-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-com). — https://brandsweets.com/colors/denim
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #813bb0 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
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #813bb0: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Next.js (https://brandsweets.com/colors/brands/nextjs-org). — https://brandsweets.com/colors/seagreen
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #813bb0: softer than #000 and cool enough to feel like part of the same palette. Seen in: Hasbro (https://brandsweets.com/colors/brands/hasbro-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #813bb0 in 3 real palettes, including Gemstone and Wells Fargo's brand system, as the accent. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/crimson
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #813bb0 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/teal
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #813bb0: two real palettes: Kraken's brand system and Calm's brand system, as the accent. Seen in: Kraken (https://brandsweets.com/colors/brands/kraken-com), Calm (https://brandsweets.com/colors/brands/calm-com). — https://brandsweets.com/colors/deepskyblue
- **Light Sea Green** #20b2aa [pool] — Light Sea Green shows up next to #813bb0 in two real palettes: Circuit and Taco Bell's brand system, as the accent. Seen in: Circuit (https://brandsweets.com/palettes/technical#circuit), Taco Bell (https://brandsweets.com/colors/brands/tacobell-com). — https://brandsweets.com/colors/lightseagreen

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

- On white (#ffffff): 6.59:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #7b38a8 (7.06:1)
- On black (#000000): 3.19:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #9a57c7 (4.56:1); AA: background → #d6d6d6 (4.54:1); AAA: text → #b381d5 (7.02:1)

## Fonts for this mood

- 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/813bb0-b99cc4-bfcb62-2d1f2d-eae9f1?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: "#813bb0" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.