# #031b0f

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

## Values

- Hex: `#031b0f`
- RGB: rgb(3, 27, 15)
- HSL: hsl(150, 80%, 6%)
- OKLCH: oklch(0.198 0.04 159.3)
- Relative luminance: 0.0084
- Nearest named color: Black Stallion (#0e191c, Δ 3.437) — https://brandsweets.com/colors/black-stallion
- Moods: vivid, dark, luxury, bold
- Page: https://brandsweets.com/colors/031b0f

## Tints & shades

- Tints (toward white): #084526, #0c6e3d, #119c57, #16c56e, #23e785, #4ceb9c, #75f0b3, #a3f5cc, #cdf9e3, #f6fefa
- Shades (toward black): #031c0f, #031c0f, #03170d, #03170d, #03170d, #03170d, #03170d, #02120a, #02120a, #02120a

## Harmonies

- Complementary: #1c030f
- Analogous: #031c03, #031c1c
- Triadic: #0f031c, #1c0f03
- Split-complementary: #1c031c, #1c0303
- Tetradic: #03031c, #1c030f, #1c1c03

## Colors that go with #031b0f

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

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #031b0f: softer than #000 and cool enough to feel like part of the same palette. Seen in: Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Puma (https://brandsweets.com/colors/brands/puma-com), Amazon (https://brandsweets.com/colors/brands/amazon-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: split] — Crimson is a split-complement of #031b0f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Huawei (https://brandsweets.com/colors/brands/huawei-com), Foot Locker (https://brandsweets.com/colors/brands/footlocker-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/crimson
- **Rust** #b7410e [harmony, pool: triadic] — Rust completes a triad with #031b0f — 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), Trailhead (https://brandsweets.com/palettes/warm#trailhead). — https://brandsweets.com/colors/rust
- **Slate Blue** #6a5acd [harmony, pool: triadic] — Slate Blue completes a triad with #031b0f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Calm (https://brandsweets.com/colors/brands/calm-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Linear (https://brandsweets.com/colors/brands/linear), GitLab (https://brandsweets.com/colors/brands/gitlab). — https://brandsweets.com/colors/slateblue
- **Teal** #008080 [harmony, pool: analogous] — Teal is #031b0f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Perplexity (https://brandsweets.com/colors/brands/perplexity), Redfin (https://brandsweets.com/colors/brands/redfin-com), N26 (https://brandsweets.com/colors/brands/n26-com), Gusto (https://brandsweets.com/colors/brands/gusto-com). — https://brandsweets.com/colors/teal
- **Medium Violet Red** #c71585 [harmony, pool: complementary] — Medium Violet Red sits directly opposite #031b0f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: T-Mobile (https://brandsweets.com/colors/brands/t-mobile-com), Bun (https://brandsweets.com/colors/brands/bun-sh). — https://brandsweets.com/colors/mediumvioletred
- **Amber** #ffbf00 [pool] — Amber is paired with #031b0f in 18 real palettes, including Warner Bros.'s brand system and Ahrefs's brand system, as the accent. Seen in: Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 22 real palettes, including CVS's brand system and native Cybersecurity's brand system put Blue beside #031b0f, as the supporting colour. Seen in: CVS (https://brandsweets.com/colors/brands/cvs-com), native Cybersecurity (https://brandsweets.com/colors/brands/crowdstrike-com), EA (https://brandsweets.com/colors/brands/ea-com), Penpot (https://brandsweets.com/colors/brands/penpot-app). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 17.99:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.17:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #0f8a4d (4.76:1); AA: background → #808080 (4.55:1); AAA: text → #13ae61 (7.25:1); AAA: background → #a3a3a3 (7.13:1)

## 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/031b0f-a2beb3-d459d2-1f2d2c-e9f1ea?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: "#031b0f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.