# #2d3871

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

## Values

- Hex: `#2d3871`
- RGB: rgb(45, 56, 113)
- HSL: hsl(230, 43%, 31%)
- OKLCH: oklch(0.363 0.098 272.4)
- Relative luminance: 0.0458
- Nearest named color: Evening Magic (#363e7d, Δ 2.957) — https://brandsweets.com/colors/evening-magic
- Moods: cool, modern
- Page: https://brandsweets.com/colors/2d3871

## Tints & shades

- Tints (toward white): #37458b, #4050a0, #4c5eb8, #6675c2, #7f8ccc, #95a0d5, #afb7df, #c8cee9, #dee1f2, #f8f8fc
- Shades (toward black): #293366, #262f5f, #212a54, #1d2449, #1a2142, #161b37, #11162c, #0d1021, #0a0d1a, #06070f

## Harmonies

- Complementary: #71662d
- Analogous: #2d5a71, #442d71
- Triadic: #712d38, #38712d
- Split-complementary: #71442d, #5a712d
- Tetradic: #712d5a, #71662d, #2d7144

## Colors that go with #2d3871

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 #2d3871's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Plaid (https://brandsweets.com/colors/brands/plaid-com), Glacier (https://brandsweets.com/palettes/cool#glacier), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Auth0 (https://brandsweets.com/colors/brands/auth0-com). — 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 #2d3871, as the accent. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), Jeep (https://brandsweets.com/colors/brands/jeep-com). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #2d3871 in 9 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), Nintendo (https://brandsweets.com/colors/brands/nintendo-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #2d3871: 18 real palettes, including Hasbro's brand system and Panasonic's brand system, as the supporting colour. Seen in: Hasbro (https://brandsweets.com/colors/brands/hasbro-com), Panasonic (https://brandsweets.com/colors/brands/panasonic-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/denim
- **Light Sea Green** #20b2aa [pool] — Light Sea Green shows up next to #2d3871 in 5 real palettes, including Confluent's brand system and Lido, as the accent. Seen in: Confluent (https://brandsweets.com/colors/brands/confluent-io), Lido (https://brandsweets.com/palettes/vivid#lido), Taco Bell (https://brandsweets.com/colors/brands/tacobell-com), Lagoon (https://brandsweets.com/palettes/vivid#lagoon). — https://brandsweets.com/colors/lightseagreen
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #2d3871 in 4 real palettes, including Fintech Trust and Mint Modern, as the accent. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Console Light (https://brandsweets.com/palettes/technical#console-light), Telehealth (https://brandsweets.com/palettes/modern#telehealth). — https://brandsweets.com/colors/mediumseagreen
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #2d3871 in 6 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), Audi (https://brandsweets.com/colors/brands/audi-com). — https://brandsweets.com/colors/orangered
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #2d3871: 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): 10.96:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.92:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5f6fbf (4.51:1); AA: background → #a6a6a6 (4.5:1); AAA: text → #8793cf (7.1:1); AAA: background → #cfcfcf (7.04:1)

## Fonts for this mood

- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/2d3871-9c9ec4-df814e-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: "#2d3871" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.