# #554c6b

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

## Values

- Hex: `#554c6b`
- RGB: rgb(85, 76, 107)
- HSL: hsl(257, 17%, 36%)
- OKLCH: oklch(0.438 0.051 297.6)
- Relative luminance: 0.0816
- Nearest named color: Freefall (#565266, Δ 2.236) — https://brandsweets.com/colors/freefall
- Moods: cool, muted
- Page: https://brandsweets.com/colors/554c6b

## Tints & shades

- Tints (toward white): #63597d, #71668f, #8479a0, #948bac, #a59db9, #b5aec6, #c6c0d3, #d9d5e1, #e9e7ee, #faf9fb
- Shades (toward black): #4e4662, #473f5a, #3d374e, #363145, #2f2a3c, #282433, #211e2a, #18151e, #110f15, #09080c

## Harmonies

- Complementary: #636b4c
- Analogous: #4c536b, #654c6b
- Triadic: #6b554c, #4c6b55
- Split-complementary: #6b654c, #536b4c
- Tetradic: #6b4c53, #636b4c, #4c6b65

## Colors that go with #554c6b

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

- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #554c6b'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), Plaid (https://brandsweets.com/colors/brands/plaid-com), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #554c6b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Gusto (https://brandsweets.com/colors/brands/gusto-com), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold). — https://brandsweets.com/colors/teal
- **Blue** #0000ff [pool] — 5 real palettes, including Alaska Airlines's brand system and Jeep's brand system put Blue beside #554c6b, as the accent. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Tesco (https://brandsweets.com/colors/brands/tesco-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #554c6b: 4 real palettes, including Dusk and Open House, as the supporting colour. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house), Alpine (https://brandsweets.com/palettes/cool#alpine), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine). — https://brandsweets.com/colors/cadetblue
- **Crimson** #dc143c [pool] — Crimson is paired with #554c6b in 6 real palettes, including Codecademy's brand system and Wells Fargo's brand system, as the accent. Seen in: Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #554c6b: 9 real palettes, including HP's brand system and Hinge's brand system, as the accent. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com). — https://brandsweets.com/colors/denim
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #554c6b in 5 real palettes, including Open House and Fireside, as the accent. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Fireside (https://brandsweets.com/palettes/dark#fireside), Disney (https://brandsweets.com/colors/brands/disney-com), Mid-Century (https://brandsweets.com/palettes/warm#mid-century). — https://brandsweets.com/colors/goldenrod
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #554c6b: 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): 7.98:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.63:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #7c7099 (4.63:1); AA: background → #c4c4c4 (4.57:1); AAA: text → #9a91b1 (7.06:1); AAA: background → #f0f0f0 (7:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/554c6b-ac9cc4-dfc24e-291f2d-e9ebf1?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: "#554c6b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.