# #4fb5cf

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

## Values

- Hex: `#4fb5cf`
- RGB: rgb(79, 181, 207)
- HSL: hsl(192, 57%, 56%)
- OKLCH: oklch(0.723 0.101 217.3)
- Relative luminance: 0.3922
- Nearest named color: Blue Bobbin (#52b4ca, Δ 0.708) — https://brandsweets.com/colors/blue-bobbin
- Moods: cool, modern
- Page: https://brandsweets.com/colors/4fb5cf

## Tints & shades

- Tints (toward white): #5fbcd3, #6fc3d8, #83cbdd, #93d2e1, #a3d8e6, #b3dfea, #c3e6ef, #d7eef4, #e7f5f8, #f7fcfd
- Shades (toward black): #3badc9, #329db8, #2c89a0, #26788c, #216778, #1b5664, #164450, #0f3038, #0a1f24, #040e10

## Harmonies

- Complementary: #cf684f
- Analogous: #4fcfa8, #4f75cf
- Triadic: #cf4fb5, #b5cf4f
- Split-complementary: #cf4f75, #cfa84f
- Tetradic: #a84fcf, #cf684f, #75cf4f

## Colors that go with #4fb5cf

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 #4fb5cf: softer than #000 and cool enough to feel like part of the same palette. Seen in: Lagoon (https://brandsweets.com/palettes/vivid#lagoon), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), Lido (https://brandsweets.com/palettes/vivid#lido), N26 (https://brandsweets.com/colors/brands/n26-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #4fb5cf in 4 real palettes, including Riot Games's brand system and JBL's brand system, as the supporting colour. Seen in: Riot Games (https://brandsweets.com/colors/brands/riotgames-com), JBL (https://brandsweets.com/colors/brands/jbl-com), Diner (https://brandsweets.com/palettes/vivid#diner), Tiffany & Co. (https://brandsweets.com/colors/brands/tiffany-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #4fb5cf: 6 real palettes, including Coca-Cola's brand system and Venmo's brand system, as the accent. Seen in: Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Venmo (https://brandsweets.com/colors/brands/venmo-com), Open House (https://brandsweets.com/palettes/clean#open-house), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #4fb5cf: 4 real palettes, including Patreon's brand system and Figma's brand system, as the accent. Seen in: Patreon (https://brandsweets.com/colors/brands/patreon-com), Figma (https://brandsweets.com/colors/brands/figma), Venmo (https://brandsweets.com/colors/brands/venmo-com), Opensea (https://brandsweets.com/colors/brands/opensea-io). — https://brandsweets.com/colors/dodgerblue
- **Midnight Blue** #191970 [pool] — 8 real palettes, including Confluent's brand system and First Snow put Midnight Blue beside #4fb5cf, as the lead colour. Seen in: Confluent (https://brandsweets.com/colors/brands/confluent-io), First Snow (https://brandsweets.com/palettes/cool#first-snow), SoFi (https://brandsweets.com/colors/brands/sofi-com), Ford (https://brandsweets.com/colors/brands/ford-com). — https://brandsweets.com/colors/midnightblue
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #4fb5cf: 4 real palettes, including First Snow and Calendly's brand system, as the accent. Seen in: First Snow (https://brandsweets.com/palettes/cool#first-snow), Calendly (https://brandsweets.com/colors/brands/calendly-com), Crypto.com (https://brandsweets.com/colors/brands/crypto-com), Stone (https://brandsweets.com/palettes/neutral#stone). — https://brandsweets.com/colors/powderblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #4fb5cf in 10 real palettes, including Confluent's brand system and Elastic's brand system, as the supporting colour. Seen in: Confluent (https://brandsweets.com/colors/brands/confluent-io), Elastic (https://brandsweets.com/colors/brands/elastic-co), NBA (https://brandsweets.com/colors/brands/nba-com), 1password (https://brandsweets.com/colors/brands/1password-com). — https://brandsweets.com/colors/royalblue
- **Salmon** #fa8072 [harmony: complementary] — Salmon sits directly opposite #4fb5cf 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/salmon

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

- On white (#ffffff): 2.37:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #297f94 (4.61:1); AA: background → #3d3d3d (4.57:1); AAA: text → #1f6070 (7.08:1); AAA: background → #1c1c1c (7.18:1)
- On black (#000000): 8.84:1 — 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/4fb5cf-a2b5be-df4e77-1f242d-e9f1ef?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: "#4fb5cf" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.