# #559aaa

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

## Values

- Hex: `#559aaa`
- RGB: rgb(85, 154, 170)
- HSL: hsl(191, 33%, 50%)
- OKLCH: oklch(0.647 0.074 214.5)
- Relative luminance: 0.2794
- Nearest named color: Atlas Cedar (#5ca0a7, Δ 2.128) — https://brandsweets.com/colors/atlas-cedar
- Moods: cool, muted
- Page: https://brandsweets.com/colors/559aaa

## Tints & shades

- Tints (toward white): #66a4b2, #77aebb, #85b6c1, #96c0ca, #a7cbd3, #b8d5db, #c9dfe4, #d6e7ea, #e7f1f3, #f8fbfc
- Shades (toward black): #4d8b99, #467e8b, #3e6f7a, #37636d, #2e535c, #26444b, #1f373d, #16282c, #0f1c1f, #070c0e

## Harmonies

- Complementary: #aa6555
- Analogous: #55aa8f, #5570aa
- Triadic: #aa559a, #9aaa55
- Split-complementary: #aa5570, #aa8f55
- Tetradic: #8f55aa, #aa6555, #70aa55

## Colors that go with #559aaa

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 #559aaa: 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
- **Copper** #b87333 [harmony, pool: split] — Copper is a split-complement of #559aaa: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Atelier (https://brandsweets.com/palettes/elegant#atelier), Wellness (https://brandsweets.com/palettes/warm#wellness). — https://brandsweets.com/colors/copper
- **Terracotta** #e2725b [harmony, pool: complementary] — Terracotta sits directly opposite #559aaa 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
- **Denim** #1560bd [pool] — Designers have shipped Denim with #559aaa: 7 real palettes, including Dusk and Peacock, as the lead colour. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Peacock (https://brandsweets.com/palettes/vivid#peacock), Open House (https://brandsweets.com/palettes/clean#open-house), Gopro (https://brandsweets.com/colors/brands/gopro-com). — 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 #559aaa, 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] — 4 real palettes, including Gopro's brand system and Graphite put Orange beside #559aaa, as the accent. Seen in: Gopro (https://brandsweets.com/colors/brands/gopro-com), Graphite (https://brandsweets.com/palettes/technical#graphite), Campus (https://brandsweets.com/palettes/friendly#campus), Olympics (https://brandsweets.com/colors/brands/olympics-com). — https://brandsweets.com/colors/orange
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #559aaa: 4 real palettes, including Ink Wash and First Snow, as the lead colour. Seen in: Ink Wash (https://brandsweets.com/palettes/dark#ink-wash), First Snow (https://brandsweets.com/palettes/cool#first-snow), 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 #559aaa in 5 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), Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Slate Workspace (https://brandsweets.com/palettes/minimal#slate-workspace). — https://brandsweets.com/colors/royalblue

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

- On white (#ffffff): 3.19:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #467e8b (4.55:1); AA: background → #292929 (4.56:1); AAA: text → #335c66 (7.33:1)
- On black (#000000): 6.59:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #60a0af (7.14:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/559aaa-a2b6be-df4e7a-1f252d-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: "#559aaa" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.