# #559caf

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

## Values

- Hex: `#559caf`
- RGB: rgb(85, 156, 175)
- HSL: hsl(193, 36%, 51%)
- OKLCH: oklch(0.654 0.077 217.2)
- Relative luminance: 0.288
- Nearest named color: Atlas Cedar (#5ca0a7, Δ 2.047) — https://brandsweets.com/colors/atlas-cedar
- Moods: cool, modern
- Page: https://brandsweets.com/colors/559caf

## Tints & shades

- Tints (toward white): #66a6b7, #74aebe, #86b8c6, #97c2ce, #a8ccd6, #b6d4dd, #c8dfe5, #d9e9ed, #e7f1f4, #f8fbfc
- Shades (toward black): #4b8da0, #458192, #3c7280, #34626f, #2e5661, #264750, #1d373e, #15282d, #0f1c1f, #070c0e

## Harmonies

- Complementary: #af6955
- Analogous: #55af96, #556faf
- Triadic: #af559c, #9caf55
- Split-complementary: #af556f, #af9655
- Tetradic: #9655af, #af6955, #6faf55

## Colors that go with #559caf

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 #559caf: softer than #000 and cool enough to feel like part of the same palette. Seen in: Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue), Lido (https://brandsweets.com/palettes/vivid#lido), Coastal (https://brandsweets.com/palettes/cool#coastal), Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com). — https://brandsweets.com/colors/charcoal
- **Terracotta** #e2725b [harmony, pool: complementary] — Terracotta sits directly opposite #559caf on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Alpine (https://brandsweets.com/palettes/cool#alpine), Resort (https://brandsweets.com/palettes/light#resort). — https://brandsweets.com/colors/terracotta
- **Copper** #b87333 [pool] — Designers have shipped Copper with #559caf: 6 real palettes, including Dusk and Atelier, as the accent. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Atelier (https://brandsweets.com/palettes/elegant#atelier), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Riverbed (https://brandsweets.com/palettes/muted#riverbed). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #559caf in 4 real palettes, including Diner and Retro Pop, as the lead colour. Seen in: Diner (https://brandsweets.com/palettes/vivid#diner), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Redfin (https://brandsweets.com/colors/brands/redfin-com), Riot Games (https://brandsweets.com/colors/brands/riotgames-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #559caf: 6 real palettes, including Dusk and Open House, as the lead colour. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house), Gopro (https://brandsweets.com/colors/brands/gopro-com), Peacock (https://brandsweets.com/palettes/vivid#peacock). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 10 real palettes, including Ford's brand system and SoFi's brand system put Midnight Blue beside #559caf, as the lead colour. Seen in: Ford (https://brandsweets.com/colors/brands/ford-com), SoFi (https://brandsweets.com/colors/brands/sofi-com), Confluent (https://brandsweets.com/colors/brands/confluent-io), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool). — https://brandsweets.com/colors/midnightblue
- **Orange** #ffa500 [pool] — 5 real palettes, including Gopro's brand system and Graphite put Orange beside #559caf, as the accent. Seen in: Gopro (https://brandsweets.com/colors/brands/gopro-com), Graphite (https://brandsweets.com/palettes/technical#graphite), Olympics (https://brandsweets.com/colors/brands/olympics-com), Campus (https://brandsweets.com/palettes/friendly#campus). — https://brandsweets.com/colors/orange
- **Peru** #cd853f [harmony, pool: split] — Peru is a split-complement of #559caf: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Estate (https://brandsweets.com/palettes/luxury#estate), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Kiln (https://brandsweets.com/palettes/dark#kiln). — https://brandsweets.com/colors/peru

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

- On white (#ffffff): 3.11:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #437e8e (4.55:1); AA: background → #2b2b2b (4.56:1); AAA: text → #335f6c (7.01:1)
- On black (#000000): 6.76:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #5ca0b2 (7.13:1)

## 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/559caf-a2b5be-df4e75-1f242d-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: "#559caf" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.