# #4b5172

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

## Values

- Hex: `#4b5172`
- RGB: rgb(75, 81, 114)
- HSL: hsl(231, 21%, 37%)
- OKLCH: oklch(0.444 0.055 276)
- Relative luminance: 0.086
- Nearest named color: Deep Indigo (#4c567a, Δ 1.761) — https://brandsweets.com/colors/deep-indigo
- Moods: cool, muted
- Page: https://brandsweets.com/colors/4b5172

## Tints & shades

- Tints (toward white): #575e85, #636b97, #747ba4, #878db0, #9ca1bf, #afb3cb, #c1c5d7, #d4d6e3, #e6e8ef, #f9f9fb
- Shades (toward black): #444a69, #3c415d, #363b53, #30344a, #2a2e41, #222534, #1c1e2b, #161822, #0e0f16, #08090c

## Harmonies

- Complementary: #726c4b
- Analogous: #4b6472, #584b72
- Triadic: #724b50, #50724b
- Split-complementary: #72584b, #64724b
- Tetradic: #724b64, #726c4b, #4b7258

## Colors that go with #4b5172

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 #4b5172'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), Plaid (https://brandsweets.com/colors/brands/plaid-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 #4b5172, as the supporting colour. Seen in: Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Jeep (https://brandsweets.com/colors/brands/jeep-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #4b5172: 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 #4b5172 in 7 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 #4b5172: 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
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #4b5172 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), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Disney (https://brandsweets.com/colors/brands/disney-com). — https://brandsweets.com/colors/goldenrod
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #4b5172 in 5 real palettes, including Console Light and Fintech Trust, as the accent. Seen in: Console Light (https://brandsweets.com/palettes/technical#console-light), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth). — https://brandsweets.com/colors/mediumseagreen
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #4b5172: 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): 7.72:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.72:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6b739e (4.57:1); AA: background → #c7c7c7 (4.57:1); AAA: text → #9096b6 (7.22:1); AAA: background → #f5f5f5 (7.08:1)

## Brands using this color

- **HP** — secondary #485571 (Δ 1.307) — 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/4b5172-9c9ec4-df834e-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: "#4b5172" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.