# #40386b

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

## Values

- Hex: `#40386b`
- RGB: rgb(64, 56, 107)
- HSL: hsl(249, 31%, 32%)
- OKLCH: oklch(0.375 0.085 288.8)
- Relative luminance: 0.0498
- Nearest named color: Her Highness (#432e6f, Δ 2.887) — https://brandsweets.com/colors/her-highness
- Moods: cool, muted
- Page: https://brandsweets.com/colors/40386b

## Tints & shades

- Tints (toward white): #4e4582, #5a4f96, #6a5fab, #7d73b5, #928ac1, #a8a1ce, #bbb6d8, #d0cde5, #e3e1ef, #f9f8fb
- Shades (toward black): #3a3361, #342e57, #302a50, #2a2546, #24203c, #1e1a32, #181528, #141221, #0e0c17, #08070d

## Harmonies

- Complementary: #636b38
- Analogous: #384a6b, #59386b
- Triadic: #6b4038, #386b40
- Split-complementary: #6b5938, #4a6b38
- Tetradic: #6b384a, #636b38, #386b59

## Colors that go with #40386b

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 #40386b's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Auth0 (https://brandsweets.com/colors/brands/auth0-com), Plaid (https://brandsweets.com/colors/brands/plaid-com), Glacier (https://brandsweets.com/palettes/cool#glacier), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/steelblue
- **Blue** #0000ff [pool] — 9 real palettes, including Alaska Airlines's brand system and CVS's brand system put Blue beside #40386b, as the accent. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 4 real palettes, including Nursery and Garden Wedding put Blush Pink beside #40386b, as the lead colour. Seen in: Nursery (https://brandsweets.com/palettes/light#nursery), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding), Blush (https://brandsweets.com/palettes/light#blush), Rain Garden (https://brandsweets.com/palettes/cool#rain-garden). — https://brandsweets.com/colors/blush-pink
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #40386b: 4 real palettes, including Open House and Coastal, as the supporting colour. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Coastal (https://brandsweets.com/palettes/cool#coastal), Dusk (https://brandsweets.com/palettes/cool#dusk), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty). — https://brandsweets.com/colors/cadetblue
- **Copper** #b87333 [pool] — Designers have shipped Copper with #40386b: 4 real palettes, including Notion's brand system and Bramble. Seen in: Notion (https://brandsweets.com/colors/brands/notion), Bramble (https://brandsweets.com/palettes/muted#bramble), Dusk (https://brandsweets.com/palettes/cool#dusk), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #40386b in 8 real palettes, including Marvel's brand system and Casper Sleep's brand system, as the accent. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Codecademy (https://brandsweets.com/colors/brands/codecademy-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #40386b: 4 real palettes, including Lamborghini's brand system and Kraken's brand system, as the supporting colour. Seen in: Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), Kraken (https://brandsweets.com/colors/brands/kraken-com), Vimeo (https://brandsweets.com/colors/brands/vimeo-com), Astro (https://brandsweets.com/colors/brands/astro-build). — https://brandsweets.com/colors/deepskyblue
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #40386b: 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): 10.52:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #766cb2 (4.56:1); AA: background → #ababab (4.58:1); AAA: text → #9991c5 (7.21:1); AAA: background → #d4d4d4 (7.1:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/40386b-a79cc4-dfae4e-271f2d-e9ecf1?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: "#40386b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.