# #1b1d31

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

## Values

- Hex: `#1b1d31`
- RGB: rgb(27, 29, 49)
- HSL: hsl(235, 29%, 15%)
- OKLCH: oklch(0.239 0.038 278.7)
- Relative luminance: 0.0133
- Nearest named color: Eclipse Elixir (#1f2133, Δ 1.604) — https://brandsweets.com/colors/eclipse-elixir
- Moods: cool, muted, dark, luxury, bold
- Page: https://brandsweets.com/colors/1b1d31

## Tints & shades

- Tints (toward white): #2a2c4c, #3a3e69, #484d84, #575d9e, #7277b1, #8c90c0, #a6aace, #c0c3dd, #dedfed, #f8f9fb
- Shades (toward black): #191b2e, #18192b, #161727, #141524, #121321, #0e0f1a, #0d0e17, #0b0c14, #090a10, #07080d

## Harmonies

- Complementary: #312f1b
- Analogous: #1b2831, #241b31
- Triadic: #311b1d, #1d311b
- Split-complementary: #31241b, #28311b
- Tetradic: #311b28, #312f1b, #1b3124

## Colors that go with #1b1d31

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 #1b1d31: softer than #000 and cool enough to feel like part of the same palette. Seen in: Volkswagen (https://brandsweets.com/colors/brands/vw-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Asana (https://brandsweets.com/colors/brands/asana-com), Audi (https://brandsweets.com/colors/brands/audi-com). — https://brandsweets.com/colors/charcoal
- **Dark Olive Green** #556b2f [harmony, pool: complementary] — Dark Olive Green sits directly opposite #1b1d31 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Cohere (https://brandsweets.com/colors/brands/cohere-com), Warp (https://brandsweets.com/colors/brands/warp-dev), 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre). — https://brandsweets.com/colors/darkolivegreen
- **Sienna** #a0522d [harmony, pool: split] — Sienna is a split-complement of #1b1d31: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Harvest (https://brandsweets.com/palettes/warm#harvest). — https://brandsweets.com/colors/sienna
- **Slate Blue** #6a5acd [harmony, pool: analogous] — Slate Blue is #1b1d31's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), GitLab (https://brandsweets.com/colors/brands/gitlab), Sentry (https://brandsweets.com/colors/brands/sentry-io), Superhuman (https://brandsweets.com/colors/brands/superhuman-com). — https://brandsweets.com/colors/slateblue
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #1b1d31's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Discover (https://brandsweets.com/colors/brands/discover-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #1b1d31 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Alpine (https://brandsweets.com/palettes/cool#alpine), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Clinic (https://brandsweets.com/palettes/clean#clinic), N26 (https://brandsweets.com/colors/brands/n26-com). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #1b1d31 in 18 real palettes, including Blueprint and Southwest Airlines's brand system, as the accent. Seen in: Blueprint (https://brandsweets.com/palettes/technical#blueprint), Southwest Airlines (https://brandsweets.com/colors/brands/southwest-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] — 23 real palettes, including Monzo's brand system and Warp's brand system put Blue beside #1b1d31, as the accent. Seen in: Monzo (https://brandsweets.com/colors/brands/monzo-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Bumble (https://brandsweets.com/colors/brands/bumble-com), Rolex (https://brandsweets.com/colors/brands/rolex-com). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 16.58:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.27:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6b71ae (4.6:1); AA: background → #878787 (4.61:1); AAA: text → #8f93c1 (7.11:1); AAA: background → #ababab (7.22:1)

## Brands using this color

- **Volkswagen** — primary #1b2236 (Δ 1.764) — https://brandsweets.com/colors/brands/vw-com

## Curated palettes containing it

- **Pastel Pop** (pastel, playful, vivid, light) — #ff9fb2, #9ad0ec, #ffe08a, #ffffff, #1f1f2e — Pastels pushed to the saturated end — pink, sky and lemon — for brands that want soft AND loud. — tool: https://brandsweets.com/palettes/new/ff9fb2-9ad0ec-ffe08a-ffffff-1f1f2e — collection: https://brandsweets.com/palettes/pastel

## 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/1b1d31-9e9cc4-df8d4e-241f2d-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: "#1b1d31" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.