# #040c3e

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

## Values

- Hex: `#040c3e`
- RGB: rgb(4, 12, 62)
- HSL: hsl(232, 88%, 13%)
- OKLCH: oklch(0.193 0.095 267)
- Relative luminance: 0.0064
- Nearest named color: Infinite Night (#071037, Δ 1.816) — https://brandsweets.com/colors/infinite-night
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/040c3e

## Tints & shades

- Tints (toward white): #071469, #091b90, #0c23bb, #0e2be1, #2c46f2, #5268f4, #7e8ef7, #a4aff9, #cfd5fc, #f5f7fe
- Shades (toward black): #040b3a, #030a35, #030930, #03082b, #03082b, #020726, #020622, #02051d, #020518, #010413

## Harmonies

- Complementary: #3e3704
- Analogous: #04293e, #19043e
- Triadic: #3e040c, #0c3e04
- Split-complementary: #3e1904, #293e04
- Tetradic: #3e0429, #3e3704, #043e19

## Colors that go with #040c3e

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

- **Blue Violet** #8a2be2 [harmony, pool: analogous] — Blue Violet is #040c3e's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Twitch (https://brandsweets.com/colors/brands/twitch-tv), Prepare your taste buds... (https://brandsweets.com/colors/brands/grubhub-com), Klarna US (https://brandsweets.com/colors/brands/klarna-com). — https://brandsweets.com/colors/blueviolet
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #040c3e: softer than #000 and cool enough to feel like part of the same palette. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Volkswagen (https://brandsweets.com/colors/brands/vw-com), Vimeo (https://brandsweets.com/colors/brands/vimeo-com), Microsoft (https://brandsweets.com/colors/brands/microsoft-com). — https://brandsweets.com/colors/charcoal
- **Rust** #b7410e [harmony, pool: triadic] — Rust completes a triad with #040c3e — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Gallery (https://brandsweets.com/palettes/editorial#gallery), Semrush (https://brandsweets.com/colors/brands/semrush-com), Wayfair (https://brandsweets.com/colors/brands/wayfair-com), Noir Beauty (https://brandsweets.com/palettes/dark#noir-beauty). — https://brandsweets.com/colors/rust
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #040c3e — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com), Intel (https://brandsweets.com/colors/brands/intel-com), Kia (https://brandsweets.com/colors/brands/kia-com), Asana (https://brandsweets.com/colors/brands/asana-com). — https://brandsweets.com/colors/seagreen
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #040c3e's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Deep Water (https://brandsweets.com/palettes/dark#deep-water), Glacier (https://brandsweets.com/palettes/cool#glacier), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #040c3e in 15 real palettes, including Southwest Airlines's brand system and Blueprint, as the accent. Seen in: Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 17 real palettes, including Penpot's brand system and League of Legends's brand system put Blue beside #040c3e, as the supporting colour. Seen in: Penpot (https://brandsweets.com/colors/brands/penpot-app), League of Legends (https://brandsweets.com/colors/brands/leagueoflegends-com), Monzo (https://brandsweets.com/colors/brands/monzo-com), MongoDB (https://brandsweets.com/colors/brands/mongodb-com). — https://brandsweets.com/colors/blue
- **Brown** #a52a2a [pool] — 4 real palettes, including State Farm's brand system and Velvet put Brown beside #040c3e, as the supporting colour. Seen in: State Farm (https://brandsweets.com/colors/brands/statefarm-com), Velvet (https://brandsweets.com/palettes/luxury#velvet), Garnet (https://brandsweets.com/palettes/warm#garnet), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke). — https://brandsweets.com/colors/brown

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

- On white (#ffffff): 18.63:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.13:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5268f4 (4.65:1); AA: background → #7d7d7d (4.53:1); AAA: text → #7e8ef7 (7.1:1); AAA: background → #a1a1a1 (7.21:1)

## Brands using this color

- **Paramount+** — secondary #000a3c (Δ 1.147) — https://brandsweets.com/colors/brands/paramountplus-com
- **Allbirds** — secondary #090c43 (Δ 1.299) — https://brandsweets.com/colors/brands/allbirds-com
- **Air France** — primary #051039 (Δ 1.425) — https://brandsweets.com/colors/brands/airfrance-com

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern
- 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/040c3e-9c9dc4-df864e-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: "#040c3e" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.