# #1fb5bd

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

## Values

- Hex: `#1fb5bd`
- RGB: rgb(31, 181, 189)
- HSL: hsl(183, 72%, 43%)
- OKLCH: oklch(0.705 0.115 200.7)
- Relative luminance: 0.3701
- Nearest named color: lightseagreen (#20b2aa, Δ 2.739) — https://brandsweets.com/colors/lightseagreen
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/1fb5bd

## Tints & shades

- Tints (toward white): #23ced7, #35d6de, #50dbe2, #65e0e6, #80e5ea, #96e9ee, #b0eff2, #c6f3f6, #e0f9fa, #f6fdfe
- Shades (toward black): #1ca4ab, #19939a, #168288, #137176, #116569, #0e5458, #0b4346, #093235, #062223, #031112

## Harmonies

- Complementary: #bd271f
- Analogous: #1fbd76, #1f66bd
- Triadic: #bd1fb5, #b5bd1f
- Split-complementary: #bd1f66, #bd761f
- Tetradic: #761fbd, #bd271f, #66bd1f

## Colors that go with #1fb5bd

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 #1fb5bd: softer than #000 and cool enough to feel like part of the same palette. Seen in: Lagoon (https://brandsweets.com/palettes/vivid#lagoon), Lido (https://brandsweets.com/palettes/vivid#lido), N26 (https://brandsweets.com/colors/brands/n26-com), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com). — https://brandsweets.com/colors/charcoal
- **Denim** #1560bd [pool] — Designers have shipped Denim with #1fb5bd: 7 real palettes, including Coca-Cola's brand system and Open House, as the accent. Seen in: Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Open House (https://brandsweets.com/palettes/clean#open-house), Venmo (https://brandsweets.com/colors/brands/venmo-com), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #1fb5bd: 4 real palettes, including Patreon's brand system and Unity's brand system, as the accent. Seen in: Patreon (https://brandsweets.com/colors/brands/patreon-com), Unity (https://brandsweets.com/colors/brands/unity-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 #1fb5bd, 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 #1fb5bd, 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 Mistral AI's brand system put Orange beside #1fb5bd, as the accent. Seen in: Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Mistral AI (https://brandsweets.com/colors/brands/mistral-ai), Gopro (https://brandsweets.com/colors/brands/gopro-com), Graphite (https://brandsweets.com/palettes/technical#graphite). — https://brandsweets.com/colors/orange
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #1fb5bd in 4 real palettes, including Cursor's brand system and Figma's brand system, as the lead colour. Seen in: Cursor (https://brandsweets.com/colors/brands/cursor-com), Figma (https://brandsweets.com/colors/brands/figma), Launch Orange (https://brandsweets.com/palettes/bold#launch-orange), Neon (https://brandsweets.com/colors/brands/neon-tech). — https://brandsweets.com/colors/orangered
- **Light Coral** #f08080 [harmony: complementary] — Light Coral sits directly opposite #1fb5bd 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): 2.5:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #168288 (4.58:1); AA: background → #383838 (4.69:1); AAA: text → #106165 (7.19:1); AAA: background → #171717 (7.17:1)
- On black (#000000): 8.4:1 — AA pass, AA-large pass, AAA pass

## 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/1fb5bd-a2b9be-d4598e-1f262d-e9f1ee?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: "#1fb5bd" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.