# #4f537d

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

## Values

- Hex: `#4f537d`
- RGB: rgb(79, 83, 125)
- HSL: hsl(235, 23%, 40%)
- OKLCH: oklch(0.457 0.068 279.1)
- Relative luminance: 0.0933
- Nearest named color: Dusk (#4e5481, Δ 0.658) — https://brandsweets.com/colors/dusk
- Moods: cool, muted
- Page: https://brandsweets.com/colors/4f537d

## Tints & shades

- Tints (toward white): #5a5f90, #686da1, #787cab, #8b8fb6, #9ea1c2, #b1b3ce, #c3c5da, #d3d4e4, #e6e7ef, #f9f9fb
- Shades (toward black): #474a71, #414468, #393c5b, #333652, #2b2d45, #232538, #1d1f2f, #161723, #101019, #08080d

## Harmonies

- Complementary: #7d7a4f
- Analogous: #4f6a7d, #624f7d
- Triadic: #7d4f52, #527d4f
- Split-complementary: #7d624f, #6a7d4f
- Tetradic: #7d4f6a, #7d7a4f, #4f7d62

## Colors that go with #4f537d

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 #4f537d'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), Discover (https://brandsweets.com/colors/brands/discover-com). — https://brandsweets.com/colors/steelblue
- **Blue** #0000ff [pool] — 5 real palettes, including Tesco's brand system and CVS's brand system put Blue beside #4f537d, as the supporting colour. Seen in: Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Activision (https://brandsweets.com/colors/brands/activision-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #4f537d in 13 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 #4f537d: 16 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
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #4f537d: 4 real palettes, including Fireside and Campbell's's brand system, as the lead colour. Seen in: Fireside (https://brandsweets.com/palettes/dark#fireside), Campbell's (https://brandsweets.com/colors/brands/campbells-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com), AT&T (https://brandsweets.com/colors/brands/att-com). — https://brandsweets.com/colors/firebrick
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #4f537d in 5 real palettes, including Open House and Mid-Century, as the accent. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Fireside (https://brandsweets.com/palettes/dark#fireside), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold). — https://brandsweets.com/colors/goldenrod
- **Light Coral** #f08080 [pool] — Designers have shipped Light Coral with #4f537d: 4 real palettes, including Blush and Target : Expect More. Pay Less.'s brand system, as the lead colour. Seen in: Blush (https://brandsweets.com/palettes/light#blush), Target : Expect More. Pay Less. (https://brandsweets.com/colors/brands/target-com), Sentry (https://brandsweets.com/colors/brands/sentry-io), Cobalt Pop (https://brandsweets.com/palettes/bold#cobalt-pop). — https://brandsweets.com/colors/lightcoral
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #4f537d: 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): 7.33:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.87:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6f73a5 (4.67:1); AA: background → #cccccc (4.56:1); AAA: text → #9195ba (7.21:1); AAA: background → #fafafa (7.02:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/4f537d-9e9cc4-df8d4e-241f2d-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: "#4f537d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.