# #1d223f

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

## Values

- Hex: `#1d223f`
- RGB: rgb(29, 34, 63)
- HSL: hsl(231, 37%, 18%)
- OKLCH: oklch(0.263 0.055 274.6)
- Relative luminance: 0.0176
- Nearest named color: Black Market (#222244, Δ 1.295) — https://brandsweets.com/colors/black-market
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/1d223f

## Tints & shades

- Tints (toward white): #2a315b, #374077, #434f93, #505eaf, #6c78bc, #8892c8, #a4acd5, #c0c5e2, #dcdfef, #f8f9fc
- Shades (toward black): #1b203b, #181c34, #161a31, #13172a, #121526, #101323, #0d0f1c, #0b0d18, #080911, #06080e

## Harmonies

- Complementary: #3f3a1d
- Analogous: #1d333f, #291d3f
- Triadic: #3f1d22, #223f1d
- Split-complementary: #3f291d, #333f1d
- Tetradic: #3f1d33, #3f3a1d, #1d3f29

## Colors that go with #1d223f

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 #1d223f: softer than #000 and cool enough to feel like part of the same palette. Seen in: Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Volkswagen (https://brandsweets.com/colors/brands/vw-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/charcoal
- **Dark Olive Green** #556b2f [harmony, pool: complementary] — Dark Olive Green sits directly opposite #1d223f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com), Cohere (https://brandsweets.com/colors/brands/cohere-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal). — https://brandsweets.com/colors/darkolivegreen
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #1d223f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-com), Asana (https://brandsweets.com/colors/brands/asana-com), Wellness (https://brandsweets.com/palettes/warm#wellness), Mushroom (https://brandsweets.com/palettes/neutral#mushroom). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: split] — Sienna is a split-complement of #1d223f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Harvest (https://brandsweets.com/palettes/warm#harvest). — https://brandsweets.com/colors/sienna
- **Slate Blue** #6a5acd [harmony, pool: analogous] — Slate Blue is #1d223f'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), Superhuman (https://brandsweets.com/colors/brands/superhuman-com), GitLab (https://brandsweets.com/colors/brands/gitlab), Sentry (https://brandsweets.com/colors/brands/sentry-io). — https://brandsweets.com/colors/slateblue
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #1d223f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Discover (https://brandsweets.com/colors/brands/discover-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #1d223f in 18 real palettes, including Southwest Airlines's brand system and Beach Hut, as the accent. Seen in: Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 24 real palettes, including Monzo's brand system and Sketch's brand system put Blue beside #1d223f, as the accent. Seen in: Monzo (https://brandsweets.com/colors/brands/monzo-com), Sketch (https://brandsweets.com/colors/brands/sketch-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Rolex (https://brandsweets.com/colors/brands/rolex-com). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 15.52:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.35:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6572b8 (4.65:1); AA: background → #8c8c8c (4.62:1); AAA: text → #8c95ca (7.27:1); AAA: background → #b0b0b0 (7.16:1)

## Brands using this color

- **Discover** — primary #23233f (Δ 1.115) — https://brandsweets.com/colors/brands/discover-com
- **Microsoft** — accent #17253d (Δ 1.384) — https://brandsweets.com/colors/brands/microsoft-com
- **Monzo** — primary #14233c (Δ 1.508) — https://brandsweets.com/colors/brands/monzo-com
- **Volkswagen** — primary #1b2236 (Δ 1.775) — https://brandsweets.com/colors/brands/vw-com

## Curated palettes containing it

- **Telehealth** (modern, cool, friendly) — #2563eb, #93c5fd, #16a34a, #ffffff, #14213d — Friendly blue with a soft tint and a green all-clear — approachable care with a tech backbone. — tool: https://brandsweets.com/palettes/new/2563eb-93c5fd-16a34a-ffffff-14213d — collection: https://brandsweets.com/palettes/modern
- **First Snow** (winter, cool, light, minimal) — #2b4c7e, #8fa8c8, #c9d6e3, #fbfcfe, #14213d — Ice blue on snow-white with a deep navy — the quietest winter palette; everything is a tint of one cold hue. — tool: https://brandsweets.com/palettes/new/2b4c7e-8fa8c8-c9d6e3-fbfcfe-14213d — collection: https://brandsweets.com/palettes/winter

## Fonts for this mood

- luxury: https://brandsweets.com/fonts/mood/luxury
- bold: https://brandsweets.com/fonts/mood/bold
- 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/1d223f-9c9ec4-df834e-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: "#1d223f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.