# #313a4e

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

## Values

- Hex: `#313a4e`
- RGB: rgb(49, 58, 78)
- HSL: hsl(221, 23%, 25%)
- OKLCH: oklch(0.349 0.037 265.7)
- Relative luminance: 0.0423
- Nearest named color: After Midnight (#38393f, Δ 2.721) — https://brandsweets.com/colors/after-midnight
- Moods: cool, muted, dark, luxury, bold
- Page: https://brandsweets.com/colors/313a4e

## Tints & shades

- Tints (toward white): #3f4b64, #4f5d7d, #5c6e93, #6f80a5, #8896b4, #9ea9c2, #b4bdd0, #cad0de, #e3e6ed, #f9f9fb
- Shades (toward black): #2d3648, #293142, #252c3c, #212835, #1d232f, #181c26, #14171f, #101319, #0c0e13, #08090d

## Harmonies

- Complementary: #4e4531
- Analogous: #31494e, #36314e
- Triadic: #4e313a, #3a4e31
- Split-complementary: #4e3631, #494e31
- Tetradic: #4e3149, #4e4531, #314e36

## Colors that go with #313a4e

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

- **Dark Olive Green** #556b2f [harmony, pool: complementary] — Dark Olive Green sits directly opposite #313a4e on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal), 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth). — https://brandsweets.com/colors/darkolivegreen
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #313a4e — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Mushroom (https://brandsweets.com/palettes/neutral#mushroom), Subaru (https://brandsweets.com/colors/brands/subaru-com). — https://brandsweets.com/colors/seagreen
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #313a4e'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), Astro (https://brandsweets.com/colors/brands/astro-build), Beach Hut (https://brandsweets.com/palettes/light#beach-hut). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #313a4e in 5 real palettes, including Beach Hut and McDonald's's brand system, as the supporting colour. Seen in: Beach Hut (https://brandsweets.com/palettes/light#beach-hut), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 12 real palettes, including Jeep's brand system and Minecraft's brand system put Blue beside #313a4e, as the accent. Seen in: Jeep (https://brandsweets.com/colors/brands/jeep-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 5 real palettes, including Garden Wedding and Nursery put Blush Pink beside #313a4e, as the supporting colour. Seen in: Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding), Nursery (https://brandsweets.com/palettes/light#nursery), Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Blush (https://brandsweets.com/palettes/light#blush). — https://brandsweets.com/colors/blush-pink
- **Burlywood** #deb887 [pool] — Burlywood is paired with #313a4e in 5 real palettes, including Polaroid and Coastal, as the accent. Seen in: Polaroid (https://brandsweets.com/palettes/light#polaroid), Coastal (https://brandsweets.com/palettes/cool#coastal), Chalkboard (https://brandsweets.com/palettes/dark#chalkboard), Kiln (https://brandsweets.com/palettes/dark#kiln). — https://brandsweets.com/colors/burlywood
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #313a4e: 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): 11.38:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.85:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #62759d (4.55:1); AA: background → #a3a3a3 (4.51:1); AAA: text → #8896b4 (7.07:1); AAA: background → #cccccc (7.08:1)

## Brands using this color

- **Blizzard** — secondary #323a48 (Δ 1.076) — https://brandsweets.com/colors/brands/blizzard-com

## Fonts for this mood

- luxury: https://brandsweets.com/fonts/mood/luxury
- bold: https://brandsweets.com/fonts/mood/bold

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/313a4e-9ca4c4-df6b4e-211f2d-e9eff1?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: "#313a4e" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.