# #210fa9

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

## Values

- Hex: `#210fa9`
- RGB: rgb(33, 15, 169)
- HSL: hsl(247, 84%, 36%)
- OKLCH: oklch(0.353 0.217 271.3)
- Relative luminance: 0.0353
- Nearest named color: Dark Galaxy (#0018a8, Δ 2.746) — https://brandsweets.com/colors/dark-galaxy
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/210fa9

## Tints & shades

- Tints (toward white): #2611c5, #2c14e1, #422ced, #5c48ef, #7564f2, #8e80f4, #a79cf6, #c4bdf9, #ddd9fc, #f7f6fe
- Shades (toward black): #1e0d9b, #1b0c8d, #180b7a, #15096c, #12085e, #0f0750, #0d0642, #09042f, #060321, #040213

## Harmonies

- Complementary: #97a90f
- Analogous: #0f4aa9, #6e0fa9
- Triadic: #a9210f, #0fa921
- Split-complementary: #a96e0f, #4aa90f
- Tetradic: #a90f4a, #97a90f, #0fa96e

## Colors that go with #210fa9

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 #210fa9: softer than #000 and cool enough to feel like part of the same palette. Seen in: dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Boeing (https://brandsweets.com/colors/brands/boeing-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Jeep (https://brandsweets.com/colors/brands/jeep-com). — https://brandsweets.com/colors/charcoal
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #210fa9's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Glacier (https://brandsweets.com/palettes/cool#glacier), FedEx (https://brandsweets.com/colors/brands/fedex-com). — https://brandsweets.com/colors/steelblue
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #210fa9: 5 real palettes, including Peacock's brand system and Blue Mono, as the accent. Seen in: Peacock (https://brandsweets.com/colors/brands/peacocktv-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #210fa9 in 7 real palettes, including Pepsi's brand system and Behance's brand system, as the supporting colour. Seen in: Pepsi (https://brandsweets.com/colors/brands/pepsi-com), Behance (https://brandsweets.com/colors/brands/behance-net), Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Nintendo (https://brandsweets.com/colors/brands/nintendo-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #210fa9: 5 real palettes, including Unilever's brand system and Warbyparker's brand system, as the accent. Seen in: Unilever (https://brandsweets.com/colors/brands/unilever-com), Warbyparker (https://brandsweets.com/colors/brands/warbyparker-com), Intel (https://brandsweets.com/colors/brands/intel-com), Bank of America (https://brandsweets.com/colors/brands/bankofamerica-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #210fa9: 4 real palettes, including Absolut's brand system and Cargo's brand system, as the supporting colour. Seen in: Absolut (https://brandsweets.com/colors/brands/absolut-com), Cargo (https://brandsweets.com/colors/brands/cargo-site), Readymag (https://brandsweets.com/colors/brands/readymag-com), Samsung (https://brandsweets.com/colors/brands/samsung-com). — https://brandsweets.com/colors/dodgerblue
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #210fa9 in 6 real palettes, including Tide's brand system and Intercom's brand system, as the accent. Seen in: Tide (https://brandsweets.com/colors/brands/tide-com), Intercom (https://brandsweets.com/colors/brands/intercom-com), NASA (https://brandsweets.com/colors/brands/nasa-gov), Doordash (https://brandsweets.com/colors/brands/doordash-com). — https://brandsweets.com/colors/orangered
- **Red** #ff0000 [pool] — Red is paired with #210fa9 in 4 real palettes, including 3M's brand system and Doordash's brand system, as the lead colour. Seen in: 3M (https://brandsweets.com/colors/brands/3m-com), Doordash (https://brandsweets.com/colors/brands/doordash-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Twitch (https://brandsweets.com/colors/brands/twitch-tv). — https://brandsweets.com/colors/red

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

- On white (#ffffff): 12.31:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.71:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #705ff1 (4.6:1); AA: background → #9e9e9e (4.59:1); AAA: text → #968af5 (7.25:1); AAA: background → #c4c4c4 (7.06:1)

## 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/210fa9-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: "#210fa9" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.