# #858bbc

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

## Values

- Hex: `#858bbc`
- RGB: rgb(133, 139, 188)
- HSL: hsl(233, 29%, 63%)
- OKLCH: oklch(0.65 0.073 278.7)
- Relative luminance: 0.2708
- Nearest named color: Galactic Gossamer (#7f8cb8, Δ 1.119) — https://brandsweets.com/colors/galactic-gossamer
- Moods: cool, muted
- Page: https://brandsweets.com/colors/858bbc

## Tints & shades

- Tints (toward white): #9298c3, #9ca1c9, #a9aed0, #b3b7d5, #c0c4dd, #cacde2, #d8dae9, #e1e3ef, #efeff6, #f8f9fb
- Shades (toward black): #7279b1, #5e66a6, #515994, #474d80, #3e4370, #33385c, #282c48, #1d2035, #121421, #07080d

## Harmonies

- Complementary: #bcb685
- Analogous: #85a7bc, #9a85bc
- Triadic: #bc858c, #8cbc85
- Split-complementary: #bc9a85, #a7bc85
- Tetradic: #bc85a7, #bcb685, #85bc9a

## Colors that go with #858bbc

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 #858bbc: softer than #000 and cool enough to feel like part of the same palette. Seen in: Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue), Plaid (https://brandsweets.com/colors/brands/plaid-com), Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com), Hermès (https://brandsweets.com/colors/brands/hermes-com). — https://brandsweets.com/colors/charcoal
- **Copper** #b87333 [harmony, pool: split] — Copper is a split-complement of #858bbc: 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), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Notion (https://brandsweets.com/colors/brands/notion). — https://brandsweets.com/colors/copper
- **Amber** #ffbf00 [pool] — Amber is paired with #858bbc in 6 real palettes, including Blueprint and Ahrefs's brand system, as the accent. Seen in: Blueprint (https://brandsweets.com/palettes/technical#blueprint), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/amber
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #858bbc: 5 real palettes, including Telegram's brand system and Blueprint, as the lead colour. Seen in: Telegram (https://brandsweets.com/colors/brands/telegram-org), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Snowflake AI Data Cloud (https://brandsweets.com/colors/brands/snowflake-com), Calm (https://brandsweets.com/colors/brands/calm-com). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #858bbc: 6 real palettes, including Dusk and Open House, as the lead colour. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/denim
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #858bbc in 4 real palettes, including Spotify's brand system and Indigo SaaS, as the lead colour. Seen in: Spotify (https://brandsweets.com/colors/brands/spotify), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Terminal (https://brandsweets.com/palettes/technical#terminal), Olympics (https://brandsweets.com/colors/brands/olympics-com). — https://brandsweets.com/colors/mediumseagreen
- **Midnight Blue** #191970 [pool] — 8 real palettes, including Plaid's brand system and Open House put Midnight Blue beside #858bbc, as the supporting colour. Seen in: Plaid (https://brandsweets.com/colors/brands/plaid-com), Open House (https://brandsweets.com/palettes/clean#open-house), First Snow (https://brandsweets.com/palettes/cool#first-snow), SoFi (https://brandsweets.com/colors/brands/sofi-com). — https://brandsweets.com/colors/midnightblue
- **Orange** #ffa500 [pool] — 4 real palettes, including Graphite and Gopro's brand system put Orange beside #858bbc, as the accent. Seen in: Graphite (https://brandsweets.com/palettes/technical#graphite), Gopro (https://brandsweets.com/colors/brands/gopro-com), Campus (https://brandsweets.com/palettes/friendly#campus), Olympics (https://brandsweets.com/colors/brands/olympics-com). — https://brandsweets.com/colors/orange

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

- On white (#ffffff): 3.27:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #6870ac (4.66:1); AA: background → #262626 (4.62:1); AAA: text → #4c538a (7.21:1)
- On black (#000000): 6.42:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #8f95c1 (7.24:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/858bbc-9c9cc4-df884e-241f2d-e9eef1?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: "#858bbc" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.