# #554b81

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

## Values

- Hex: `#554b81`
- RGB: rgb(85, 75, 129)
- HSL: hsl(251, 26%, 40%)
- OKLCH: oklch(0.447 0.087 291)
- Relative luminance: 0.0855
- Nearest named color: Freshly Purpleized (#5c5083, Δ 1.916) — https://brandsweets.com/colors/freshly-purpleized
- Moods: cool, muted
- Page: https://brandsweets.com/colors/554b81

## Tints & shades

- Tints (toward white): #625794, #7065a4, #7f75ae, #9188b9, #a39bc5, #b5afd0, #c7c2db, #d5d2e5, #e7e5f0, #f9f9fb
- Shades (toward black): #4d4474, #463e6a, #3e375d, #373154, #2f2a47, #26223a, #201c30, #171523, #110f1a, #09080d

## Harmonies

- Complementary: #77814b
- Analogous: #4b5c81, #704b81
- Triadic: #81554b, #4b8155
- Split-complementary: #81704b, #5c814b
- Tetradic: #814b5c, #77814b, #4b8170

## Colors that go with #554b81

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #554b81: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Netflix (https://brandsweets.com/colors/brands/netflix), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com). — https://brandsweets.com/colors/seagreen
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #554b81's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Capital One (https://brandsweets.com/colors/brands/capitalone-com), Auth0 (https://brandsweets.com/colors/brands/auth0-com), American Express (https://brandsweets.com/colors/brands/americanexpress-com), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/steelblue
- **Blue** #0000ff [pool] — 6 real palettes, including Tesco's brand system and CVS's brand system put Blue beside #554b81, as the supporting colour. Seen in: Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #554b81 in 10 real palettes, including Wells Fargo's brand system and Walgreens's brand system, as the lead colour. Seen in: Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Costco (https://brandsweets.com/colors/brands/costco-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #554b81: 14 real palettes, including HP's brand system and The New York Times's brand system, as the accent. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), The New York Times (https://brandsweets.com/colors/brands/nytimes-com), Dutch Bros (https://brandsweets.com/colors/brands/dutchbros-com), Unilever (https://brandsweets.com/colors/brands/unilever-com). — https://brandsweets.com/colors/denim
- **Light Coral** #f08080 [pool] — Designers have shipped Light Coral with #554b81: 4 real palettes, including Blush and Cobalt Pop, as the lead colour. Seen in: Blush (https://brandsweets.com/palettes/light#blush), Cobalt Pop (https://brandsweets.com/palettes/bold#cobalt-pop), Target : Expect More. Pay Less. (https://brandsweets.com/colors/brands/target-com), Sentry (https://brandsweets.com/colors/brands/sentry-io). — https://brandsweets.com/colors/lightcoral
- **Midnight Blue** #191970 [pool] — 13 real palettes, including First Snow and Lufthansa's brand system put Midnight Blue beside #554b81, as that palette's text colour. Seen in: First Snow (https://brandsweets.com/palettes/cool#first-snow), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), FIFA (https://brandsweets.com/colors/brands/fifa-com), Microsoft (https://brandsweets.com/colors/brands/microsoft-com). — https://brandsweets.com/colors/midnightblue
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #554b81: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy. — https://brandsweets.com/colors/whitesmoke

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

- On white (#ffffff): 7.75:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.71:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #796eaa (4.62:1); AA: background → #c7c7c7 (4.58:1); AAA: text → #9a92bf (7.24:1); AAA: background → #f5f5f5 (7.11:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/554b81-a89cc4-dfb34e-281f2d-e9ecf1?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: "#554b81" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.