# #3d446b

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

## Values

- Hex: `#3d446b`
- RGB: rgb(61, 68, 107)
- HSL: hsl(231, 27%, 33%)
- OKLCH: oklch(0.399 0.066 275.2)
- Relative luminance: 0.0619
- Nearest named color: Bonne Nuit (#3a4866, Δ 1.71) — https://brandsweets.com/colors/bonne-nuit
- Moods: cool, muted
- Page: https://brandsweets.com/colors/3d446b

## Tints & shades

- Tints (toward white): #4a5382, #565f95, #6770a8, #7a83b3, #9198c0, #a4aacb, #bbbfd8, #ced2e3, #e5e7f0, #f9f9fb
- Shades (toward black): #383e61, #323857, #2d324e, #272b44, #23273e, #1e2134, #181b2a, #131520, #0d0e17, #07080d

## Harmonies

- Complementary: #6b643d
- Analogous: #3d5b6b, #4d3d6b
- Triadic: #6b3d44, #446b3d
- Split-complementary: #6b4d3d, #5b6b3d
- Tetradic: #6b3d5b, #6b643d, #3d6b4d

## Colors that go with #3d446b

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 #3d446b'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), Capital One (https://brandsweets.com/colors/brands/capitalone-com). — https://brandsweets.com/colors/steelblue
- **Blue** #0000ff [pool] — 7 real palettes, including Alaska Airlines's brand system and Jeep's brand system put Blue beside #3d446b, as the accent. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Tesco (https://brandsweets.com/colors/brands/tesco-com). — https://brandsweets.com/colors/blue
- **Copper** #b87333 [pool] — Designers have shipped Copper with #3d446b: 4 real palettes, including Dusk and Desert Road, as the accent. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Desert Road (https://brandsweets.com/palettes/warm#desert-road), Notion (https://brandsweets.com/colors/brands/notion), Bramble (https://brandsweets.com/palettes/muted#bramble). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #3d446b in 9 real palettes, including Codecademy's brand system and Marvel's brand system, as the accent. Seen in: Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Casper Sleep (https://brandsweets.com/colors/brands/casper-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #3d446b: 15 real palettes, including Hinge's brand system and Jack Daniel's's brand system, as the accent. Seen in: 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), HP (https://brandsweets.com/colors/brands/hp-com). — https://brandsweets.com/colors/denim
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #3d446b in 4 real palettes, including Disney's brand system and Sapphire & Gold, as the accent. Seen in: Disney (https://brandsweets.com/colors/brands/disney-com), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Fireside (https://brandsweets.com/palettes/dark#fireside), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/goldenrod
- **Light Sea Green** #20b2aa [pool] — Light Sea Green shows up next to #3d446b in 4 real palettes, including Confluent's brand system and Lagoon, as the accent. Seen in: Confluent (https://brandsweets.com/colors/brands/confluent-io), Lagoon (https://brandsweets.com/palettes/vivid#lagoon), N26 (https://brandsweets.com/colors/brands/n26-com), Lido (https://brandsweets.com/palettes/vivid#lido). — https://brandsweets.com/colors/lightseagreen
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #3d446b: 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): 9.39:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.24:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6a74a9 (4.68:1); AA: background → #b5b5b5 (4.58:1); AAA: text → #8e95be (7.19:1); AAA: background → #e0e0e0 (7.11:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/3d446b-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: "#3d446b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.