# #210443

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

## Values

- Hex: `#210443`
- RGB: rgb(33, 4, 67)
- HSL: hsl(268, 89%, 14%)
- OKLCH: oklch(0.215 0.107 297.3)
- Relative luminance: 0.0082
- Nearest named color: Your Darkness (#220044, Δ 0.824) — https://brandsweets.com/colors/your-darkness
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/210443

## Tints & shades

- Tints (toward white): #35066a, #4a0995, #5e0bbc, #730de7, #882bf3, #9e51f5, #b67df7, #cca3fa, #e4cffc, #faf5fe
- Shades (toward black): #1f043f, #1d033a, #1a0335, #180330, #16032b, #130227, #110222, #0e021d, #0c0118, #0a0113

## Harmonies

- Complementary: #264304
- Analogous: #040643, #410443
- Triadic: #432204, #044322
- Split-complementary: #434104, #064304
- Tetradic: #430406, #264304, #044341

## Colors that go with #210443

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 #210443: softer than #000 and cool enough to feel like part of the same palette. Seen in: Volkswagen (https://brandsweets.com/colors/brands/vw-com), Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Asana (https://brandsweets.com/colors/brands/asana-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #210443's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Penpot (https://brandsweets.com/colors/brands/penpot-app), Spectrum (https://brandsweets.com/colors/brands/spectrum-com), Slate Workspace (https://brandsweets.com/palettes/minimal#slate-workspace), Telehealth (https://brandsweets.com/palettes/modern#telehealth). — https://brandsweets.com/colors/royalblue
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #210443 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), Clinic (https://brandsweets.com/palettes/clean#clinic), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #210443 in 14 real palettes, including Southwest Airlines's brand system and Blueprint, as the accent. Seen in: Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 15 real palettes, including Penpot's brand system and League of Legends's brand system put Blue beside #210443, as the supporting colour. Seen in: Penpot (https://brandsweets.com/colors/brands/penpot-app), League of Legends (https://brandsweets.com/colors/brands/leagueoflegends-com), Sketch (https://brandsweets.com/colors/brands/sketch-com), Warp (https://brandsweets.com/colors/brands/warp-dev). — https://brandsweets.com/colors/blue
- **Blue Violet** #8a2be2 [pool] — Blue Violet is paired with #210443 in 8 real palettes, including Gemstone and Yahoo's brand system, as the supporting colour. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Yahoo (https://brandsweets.com/colors/brands/yahoo-com), ClickUp (https://brandsweets.com/colors/brands/clickup-com), Prepare your taste buds... (https://brandsweets.com/colors/brands/grubhub-com). — https://brandsweets.com/colors/blueviolet
- **Brown** #a52a2a [pool] — 4 real palettes, including Garnet and Velvet put Brown beside #210443, as the lead colour. Seen in: Garnet (https://brandsweets.com/palettes/warm#garnet), Velvet (https://brandsweets.com/palettes/luxury#velvet), State Farm (https://brandsweets.com/colors/brands/statefarm-com), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke). — https://brandsweets.com/colors/brown
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #210443: 9 real palettes, including SoFi's brand system and Arctic, as the supporting colour. Seen in: SoFi (https://brandsweets.com/colors/brands/sofi-com), Arctic (https://brandsweets.com/palettes/clean#arctic), Alpine (https://brandsweets.com/palettes/cool#alpine), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/cadetblue

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

- On white (#ffffff): 18.06:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.16:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #9848f4 (4.57:1); AA: background → #808080 (4.57:1); AAA: text → #b67df7 (7.27:1); AAA: background → #a3a3a3 (7.16:1)

## Fonts for this mood

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

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/210443-b39cc4-dfdc4e-2c1f2d-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: "#210443" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.