# #4b508b

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

## Values

- Hex: `#4b508b`
- RGB: rgb(75, 80, 139)
- HSL: hsl(235, 30%, 42%)
- OKLCH: oklch(0.455 0.096 278.2)
- Relative luminance: 0.091
- Nearest named color: Dusk (#4e5481, Δ 2.284) — https://brandsweets.com/colors/dusk
- Moods: cool, muted
- Page: https://brandsweets.com/colors/4b508b

## Tints & shades

- Tints (toward white): #565c9f, #6369ab, #777cb6, #888cbf, #9c9fc9, #afb3d4, #c0c2dd, #d4d6e8, #e4e6f1, #f8f9fb
- Shades (toward black): #44497e, #3d4171, #373b67, #30345a, #292c4c, #22243f, #1b1d32, #151728, #0e0f1b, #07080d

## Harmonies

- Complementary: #8b864b
- Analogous: #4b708b, #664b8b
- Triadic: #8b4b50, #508b4b
- Split-complementary: #8b664b, #708b4b
- Tetradic: #8b4b70, #8b864b, #4b8b66

## Colors that go with #4b508b

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

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #4b508b: softer than #000 and cool enough to feel like part of the same palette. Seen in: Harbour (https://brandsweets.com/palettes/cool#harbour), Amazon (https://brandsweets.com/colors/brands/amazon-com), Tumblr (https://brandsweets.com/colors/brands/tumblr-com), Hinge (https://brandsweets.com/colors/brands/hinge-co). — https://brandsweets.com/colors/charcoal
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #4b508b'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), American Express (https://brandsweets.com/colors/brands/americanexpress-com), Glacier (https://brandsweets.com/palettes/cool#glacier), Auth0 (https://brandsweets.com/colors/brands/auth0-com). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #4b508b in 4 real palettes, including Warner Bros.'s brand system and McDonald's's brand system, as the accent. Seen in: Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 6 real palettes, including Tesco's brand system and CVS's brand system put Blue beside #4b508b, as the supporting colour. Seen in: Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Activision (https://brandsweets.com/colors/brands/activision-com). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #4b508b 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), Costco (https://brandsweets.com/colors/brands/costco-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/crimson
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #4b508b: 6 real palettes, including Campbell's's brand system and Datadog's brand system, as the supporting colour. Seen in: Campbell's (https://brandsweets.com/colors/brands/campbells-com), Datadog (https://brandsweets.com/colors/brands/datadoghq-com), AT&T (https://brandsweets.com/colors/brands/att-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com). — https://brandsweets.com/colors/firebrick
- **Midnight Blue** #191970 [pool] — 19 real palettes, including First Snow and FIFA's brand system put Midnight Blue beside #4b508b, as that palette's text colour. Seen in: First Snow (https://brandsweets.com/palettes/cool#first-snow), FIFA (https://brandsweets.com/colors/brands/fifa-com), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/midnightblue
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #4b508b in 5 real palettes, including Tumblr's brand system and NASA's brand system, as the accent. Seen in: Tumblr (https://brandsweets.com/colors/brands/tumblr-com), NASA (https://brandsweets.com/colors/brands/nasa-gov), Tide (https://brandsweets.com/colors/brands/tide-com), PlanetScale (https://brandsweets.com/colors/brands/planetscale-com). — https://brandsweets.com/colors/orangered

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 7.45:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.82:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6a70af (4.55:1); AA: background → #cccccc (4.64:1); AAA: text → #8e93c2 (7.1:1); AAA: background → #fafafa (7.14:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/4b508b-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: "#4b508b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.