# #4b4c81

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

## Values

- Hex: `#4b4c81`
- RGB: rgb(75, 76, 129)
- HSL: hsl(239, 26%, 40%)
- OKLCH: oklch(0.441 0.086 281.4)
- Relative luminance: 0.0825
- Nearest named color: Dusk (#4e5481, Δ 2.433) — https://brandsweets.com/colors/dusk
- Moods: cool, muted
- Page: https://brandsweets.com/colors/4b4c81

## Tints & shades

- Tints (toward white): #575894, #6566a4, #7576ae, #8889b9, #9b9cc5, #afafd0, #c2c2db, #d2d2e5, #e5e5f0, #f9f9fb
- Shades (toward black): #444574, #3e3f6a, #37375d, #313254, #2a2a47, #22223a, #1c1d30, #151523, #0f0f1a, #08080d

## Harmonies

- Complementary: #81804b
- Analogous: #4b6781, #654b81
- Triadic: #814b4c, #4c814b
- Split-complementary: #81654b, #67814b
- Tetradic: #814b67, #81804b, #4b8165

## Colors that go with #4b4c81

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 #4b4c81'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), Glacier (https://brandsweets.com/palettes/cool#glacier), American Express (https://brandsweets.com/colors/brands/americanexpress-com). — https://brandsweets.com/colors/steelblue
- **Blue** #0000ff [pool] — 6 real palettes, including CVS's brand system and Tesco's brand system put Blue beside #4b4c81, as the supporting colour. Seen in: CVS (https://brandsweets.com/colors/brands/cvs-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Activision (https://brandsweets.com/colors/brands/activision-com). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #4b4c81: 4 real palettes, including Blue Mono and Coca-Cola's brand system, as the supporting colour. Seen in: Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Blizzard (https://brandsweets.com/colors/brands/blizzard-com), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #4b4c81 in 12 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 #4b4c81: 14 real palettes, including HP's brand system and Unilever's brand system, as the accent. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Dutch Bros (https://brandsweets.com/colors/brands/dutchbros-com), The New York Times (https://brandsweets.com/colors/brands/nytimes-com). — https://brandsweets.com/colors/denim
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #4b4c81 in 5 real palettes, including Open House and Sapphire & Gold, as the accent. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Disney (https://brandsweets.com/colors/brands/disney-com), Fireside (https://brandsweets.com/palettes/dark#fireside). — https://brandsweets.com/colors/goldenrod
- **Midnight Blue** #191970 [pool] — 17 real palettes, including First Snow and Microsoft's brand system put Midnight Blue beside #4b4c81, as that palette's text colour. Seen in: First Snow (https://brandsweets.com/palettes/cool#first-snow), Microsoft (https://brandsweets.com/colors/brands/microsoft-com), FIFA (https://brandsweets.com/colors/brands/fifa-com), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com). — https://brandsweets.com/colors/midnightblue
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #4b4c81: 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): 7.92:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.65:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6e6faa (4.52:1); AA: background → #c4c4c4 (4.54:1); AAA: text → #9293bf (7.15:1); AAA: background → #f2f2f2 (7.08:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/4b4c81-a09cc4-df964e-251f2d-e9edf1?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: "#4b4c81" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.