# #3bb5b5

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

## Values

- Hex: `#3bb5b5`
- RGB: rgb(59, 181, 181)
- HSL: hsl(180, 51%, 47%)
- OKLCH: oklch(0.708 0.105 195)
- Relative luminance: 0.3731
- Nearest named color: lightseagreen (#20b2aa, Δ 2.218) — https://brandsweets.com/colors/lightseagreen
- Moods: cool, modern
- Page: https://brandsweets.com/colors/3bb5b5

## Tints & shades

- Tints (toward white): #46c3c3, #59c9c9, #6dd0d0, #80d6d6, #97dddd, #aae4e4, #beeaea, #d1f0f0, #e4f6f6, #f7fdfd
- Shades (toward black): #36a6a6, #2f9292, #2a8383, #257474, #206464, #1a5151, #154141, #103232, #0a1f1f, #050f0f

## Harmonies

- Complementary: #b53b3b
- Analogous: #3bb578, #3b78b5
- Triadic: #b53bb5, #b5b53b
- Split-complementary: #b53b78, #b5783b
- Tetradic: #783bb5, #b53b3b, #78b53b

## Colors that go with #3bb5b5

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 #3bb5b5: softer than #000 and cool enough to feel like part of the same palette. Seen in: Lagoon (https://brandsweets.com/palettes/vivid#lagoon), N26 (https://brandsweets.com/colors/brands/n26-com), Lido (https://brandsweets.com/palettes/vivid#lido), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #3bb5b5 in 4 real palettes, including Riot Games's brand system and Diner, as the supporting colour. Seen in: Riot Games (https://brandsweets.com/colors/brands/riotgames-com), Diner (https://brandsweets.com/palettes/vivid#diner), DuckDuckGo (https://brandsweets.com/colors/brands/duckduckgo-com), Tiffany & Co. (https://brandsweets.com/colors/brands/tiffany-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #3bb5b5: 7 real palettes, including Open House and Coca-Cola's brand system, as the lead colour. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Dusk (https://brandsweets.com/palettes/cool#dusk), Peacock (https://brandsweets.com/palettes/vivid#peacock). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #3bb5b5: 4 real palettes, including Unity's brand system and Patreon's brand system, as the lead colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Patreon (https://brandsweets.com/colors/brands/patreon-com), Figma (https://brandsweets.com/colors/brands/figma), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/dodgerblue
- **Midnight Blue** #191970 [pool] — 8 real palettes, including Confluent's brand system and Ford's brand system put Midnight Blue beside #3bb5b5, as the lead colour. Seen in: Confluent (https://brandsweets.com/colors/brands/confluent-io), Ford (https://brandsweets.com/colors/brands/ford-com), SoFi (https://brandsweets.com/colors/brands/sofi-com), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/midnightblue
- **Mustard Yellow** #ffdb58 [pool] — 4 real palettes, including Lido and Crayon Box put Mustard Yellow beside #3bb5b5, as the accent. Seen in: Lido (https://brandsweets.com/palettes/vivid#lido), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Diner (https://brandsweets.com/palettes/vivid#diner), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice). — https://brandsweets.com/colors/mustard
- **Orange** #ffa500 [pool] — 4 real palettes, including Mint Modern and Graphite put Orange beside #3bb5b5, as the accent. Seen in: Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Graphite (https://brandsweets.com/palettes/technical#graphite), Mistral AI (https://brandsweets.com/colors/brands/mistral-ai), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/orange
- **Light Coral** #f08080 [harmony: complementary] — Light Coral sits directly opposite #3bb5b5 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/lightcoral

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

- On white (#ffffff): 2.48:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #297f7f (4.73:1); AA: background → #3b3b3b (4.51:1); AAA: text → #1f6060 (7.24:1); AAA: background → #1a1a1a (7.01:1)
- On black (#000000): 8.46:1 — AA pass, AA-large pass, AAA pass

## Fonts for this mood

- 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/3bb5b5-a2bbbe-d45994-1f272d-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: "#3bb5b5" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.