# #4b516c

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

## Values

- Hex: `#4b516c`
- RGB: rgb(75, 81, 108)
- HSL: hsl(229, 18%, 36%)
- OKLCH: oklch(0.441 0.045 274.7)
- Relative luminance: 0.0846
- Nearest named color: Freefall (#565266, Δ 2.034) — https://brandsweets.com/colors/freefall
- Moods: cool, muted
- Page: https://brandsweets.com/colors/4b516c

## Tints & shades

- Tints (toward white): #585f7e, #646c90, #787fa1, #8a90ad, #9ca1ba, #aeb2c7, #c0c3d3, #d5d7e2, #e7e8ee, #f9f9fb
- Shades (toward black): #454b63, #3f445a, #363b4e, #303445, #2a2d3c, #242633, #1d202a, #15171e, #0f1015, #08090c

## Harmonies

- Complementary: #6c664b
- Analogous: #4b626c, #564b6c
- Triadic: #6c4b51, #516c4b
- Split-complementary: #6c564b, #626c4b
- Tetradic: #6c4b62, #6c664b, #4b6c56

## Colors that go with #4b516c

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 #4b516c'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
- **Blue** #0000ff [pool] — 5 real palettes, including Alaska Airlines's brand system and Jeep's brand system put Blue beside #4b516c, 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 #4b516c: 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
- **Champagne** #f7e7ce [pool] — 4 real palettes, including Darkroom and BrandSweets's brand system put Champagne beside #4b516c, as the surface under it. Seen in: Darkroom (https://brandsweets.com/palettes/muted#darkroom), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Bramble (https://brandsweets.com/palettes/muted#bramble), Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com). — https://brandsweets.com/colors/champagne
- **Copper** #b87333 [pool] — Designers have shipped Copper with #4b516c: 4 real palettes, including Dusk and Desert Road, as the accent. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Desert Road (https://brandsweets.com/palettes/warm#desert-road), Bramble (https://brandsweets.com/palettes/muted#bramble), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #4b516c in 8 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), Costco (https://brandsweets.com/colors/brands/costco-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #4b516c: 13 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
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #4b516c: 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): 7.8:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.69:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6c7499 (4.6:1); AA: background → #c7c7c7 (4.61:1); AAA: text → #9096b2 (7.19:1); AAA: background → #f5f5f5 (7.15:1)

## Brands using this color

- **HP** — secondary #485571 (Δ 1.276) — https://brandsweets.com/colors/brands/hp-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/4b516c-9c9fc4-df7e4e-231f2d-e9eef1?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: "#4b516c" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.