# #817bb2

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

## Values

- Hex: `#817bb2`
- RGB: rgb(129, 123, 178)
- HSL: hsl(247, 26%, 59%)
- OKLCH: oklch(0.61 0.083 288.7)
- Relative luminance: 0.2205
- Nearest named color: Aster (#867ba9, Δ 1.556) — https://brandsweets.com/colors/aster
- Moods: cool, muted
- Page: https://brandsweets.com/colors/817bb2

## Tints & shades

- Tints (toward white): #8e88b9, #9a95c1, #a6a2c8, #b3afd0, #bfbcd7, #c8c5dd, #d4d2e5, #e0dfec, #edecf4, #f9f9fb
- Shades (toward black): #726ba8, #625b9a, #58518a, #4c4677, #413c67, #353154, #2b2843, #1f1c30, #141320, #08080d

## Harmonies

- Complementary: #abb27b
- Analogous: #7b90b2, #9d7bb2
- Triadic: #b2827b, #7bb282
- Split-complementary: #b29d7b, #90b27b
- Tetradic: #b27b90, #abb27b, #7bb29d

## Colors that go with #817bb2

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

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #817bb2: softer than #000 and cool enough to feel like part of the same palette. Seen in: Plaid (https://brandsweets.com/colors/brands/plaid-com), Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com), Hermès (https://brandsweets.com/colors/brands/hermes-com), PlayStation® Official Site: Consoles, Games, Accessories & MoreSony Interactive Entertainment (https://brandsweets.com/colors/brands/playstation-com). — https://brandsweets.com/colors/charcoal
- **Copper** #b87333 [harmony, pool: split] — Copper is a split-complement of #817bb2: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Atelier (https://brandsweets.com/palettes/elegant#atelier), Notion (https://brandsweets.com/colors/brands/notion), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/copper
- **Amber** #ffbf00 [pool] — Amber is paired with #817bb2 in 6 real palettes, including Beach Hut and Blueprint, as the supporting colour. Seen in: Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Wired (https://brandsweets.com/colors/brands/wired-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/amber
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #817bb2: 5 real palettes, including Fintech Trust and Ink & Paper, as the lead colour. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Ink & Paper (https://brandsweets.com/palettes/minimal#ink-and-paper), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #817bb2 in 4 real palettes, including Marvel's brand system and Retro Pop, as the accent. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), NASCAR (https://brandsweets.com/colors/brands/nascar-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #817bb2: 5 real palettes, including Telegram's brand system and Astro's brand system, as the lead colour. Seen in: Telegram (https://brandsweets.com/colors/brands/telegram-org), Astro (https://brandsweets.com/colors/brands/astro-build), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Deep Water (https://brandsweets.com/palettes/dark#deep-water). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #817bb2: 10 real palettes, including Campus and Dusk, as the lead colour. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), Dusk (https://brandsweets.com/palettes/cool#dusk), American Express (https://brandsweets.com/colors/brands/americanexpress-com), Discover (https://brandsweets.com/colors/brands/discover-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 7 real palettes, including Plaid's brand system and Marvel's brand system put Midnight Blue beside #817bb2, as the supporting colour. Seen in: Plaid (https://brandsweets.com/colors/brands/plaid-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Discover (https://brandsweets.com/colors/brands/discover-com). — https://brandsweets.com/colors/midnightblue

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

- On white (#ffffff): 3.88:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #756eaa (4.6:1); AA: background → #171717 (4.62:1); AAA: text → #58518a (7.1:1)
- On black (#000000): 5.41:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #9792bf (7.18:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/817bb2-a59cc4-dfaa4e-271f2d-e9ecf1?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: "#817bb2" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.