# #219fa1

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

## Values

- Hex: `#219fa1`
- RGB: rgb(33, 159, 161)
- HSL: hsl(181, 66%, 38%)
- OKLCH: oklch(0.64 0.102 196.6)
- Relative luminance: 0.2769
- Nearest named color: Baltic (#279d9f, Δ 0.57) — https://brandsweets.com/colors/baltic
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/219fa1

## Tints & shades

- Tints (toward white): #26b8ba, #2bd1d4, #45d6d9, #5edcde, #78e1e3, #91e7e8, #aaedee, #c4f2f3, #ddf8f8, #f7fdfd
- Shades (toward black): #1e9294, #1b8183, #187577, #156466, #125859, #104b4c, #0c3a3b, #0a2e2f, #061d1e, #031111

## Harmonies

- Complementary: #a12321
- Analogous: #21a163, #215fa1
- Triadic: #a1219f, #9fa121
- Split-complementary: #a1215f, #a16321
- Tetradic: #6321a1, #a12321, #5fa121

## Colors that go with #219fa1

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 #219fa1: softer than #000 and cool enough to feel like part of the same palette. Seen in: Coastal (https://brandsweets.com/palettes/cool#coastal), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), N26 (https://brandsweets.com/colors/brands/n26-com), Lido (https://brandsweets.com/palettes/vivid#lido). — https://brandsweets.com/colors/charcoal
- **Red** #ff0000 [harmony, pool: complementary] — Red sits directly opposite #219fa1 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Nike (https://brandsweets.com/colors/brands/nike-com). — https://brandsweets.com/colors/red
- **Copper** #b87333 [pool] — Designers have shipped Copper with #219fa1: 5 real palettes, including Clean Beauty and Wellness, as the accent. Seen in: Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Wellness (https://brandsweets.com/palettes/warm#wellness), Dusk (https://brandsweets.com/palettes/cool#dusk), Atelier (https://brandsweets.com/palettes/elegant#atelier). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #219fa1 in 6 real palettes, including Diner and Redfin's brand system, as the lead colour. Seen in: Diner (https://brandsweets.com/palettes/vivid#diner), Redfin (https://brandsweets.com/colors/brands/redfin-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), DuckDuckGo (https://brandsweets.com/colors/brands/duckduckgo-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #219fa1: 9 real palettes, including Peacock and Gopro's brand system, as the supporting colour. Seen in: Peacock (https://brandsweets.com/palettes/vivid#peacock), Gopro (https://brandsweets.com/colors/brands/gopro-com), Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 8 real palettes, including Ford's brand system and Tide Pool put Midnight Blue beside #219fa1, as the lead colour. Seen in: Ford (https://brandsweets.com/colors/brands/ford-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), SoFi (https://brandsweets.com/colors/brands/sofi-com), Confluent (https://brandsweets.com/colors/brands/confluent-io). — https://brandsweets.com/colors/midnightblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #219fa1 in 5 real palettes, including Confluent's brand system and Khan Academy's brand system, as the supporting colour. Seen in: Confluent (https://brandsweets.com/colors/brands/confluent-io), Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org), Elastic (https://brandsweets.com/colors/brands/elastic-co), Brilliant (https://brandsweets.com/colors/brands/brilliant-org). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #219fa1 in 13 real palettes, including Rain Garden and Still Water, as that palette's text colour. Seen in: Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Still Water (https://brandsweets.com/palettes/cool#still-water), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Resort (https://brandsweets.com/palettes/light#resort). — https://brandsweets.com/colors/taupe

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

- On white (#ffffff): 3.21:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #1b8183 (4.65:1); AA: background → #292929 (4.53:1); AAA: text → #146061 (7.3:1)
- On black (#000000): 6.54:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #23a7a9 (7.17:1)

## 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/219fa1-a2babe-d45992-1f272d-e9f1ed?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: "#219fa1" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.