# #0d2d3a

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

## Values

- Hex: `#0d2d3a`
- RGB: rgb(13, 45, 58)
- HSL: hsl(197, 63%, 14%)
- OKLCH: oklch(0.28 0.044 228.3)
- Relative luminance: 0.0227
- Nearest named color: Black Box (#0f282f, Δ 2.337) — https://brandsweets.com/colors/black-box
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/0d2d3a

## Tints & shades

- Tints (toward white): #15475b, #1d6581, #257fa2, #2d9cc8, #48add5, #69bcdd, #8fcde6, #b0dced, #d5ecf6, #f7fbfd
- Shades (toward black): #0c2a36, #0b2732, #0a242e, #09202a, #081d25, #081a21, #07171d, #061319, #051015, #040d11

## Harmonies

- Complementary: #3a1a0d
- Analogous: #0d3a30, #0d173a
- Triadic: #3a0d2d, #2d3a0d
- Split-complementary: #3a0d17, #3a300d
- Tetradic: #300d3a, #3a1a0d, #173a0d

## Colors that go with #0d2d3a

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 #0d2d3a: softer than #000 and cool enough to feel like part of the same palette. Seen in: Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Plaid (https://brandsweets.com/colors/brands/plaid-com), Volkswagen (https://brandsweets.com/colors/brands/vw-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: split] — Crimson is a split-complement of #0d2d3a: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Vodafone (https://brandsweets.com/colors/brands/vodafone-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Svelte (https://brandsweets.com/colors/brands/svelte-dev), AliExpress (https://brandsweets.com/colors/brands/aliexpress-com). — https://brandsweets.com/colors/crimson
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #0d2d3a's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-com), Rotten Tomatoes (https://brandsweets.com/colors/brands/rottentomatoes-com), Loom (https://brandsweets.com/colors/brands/loom-com), Zed (https://brandsweets.com/colors/brands/zed-dev). — https://brandsweets.com/colors/royalblue
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #0d2d3a 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), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), Harvest (https://brandsweets.com/palettes/warm#harvest). — https://brandsweets.com/colors/sienna
- **Teal** #008080 [harmony, pool: analogous] — Teal is #0d2d3a's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Alpine (https://brandsweets.com/palettes/cool#alpine), N26 (https://brandsweets.com/colors/brands/n26-com), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Gusto (https://brandsweets.com/colors/brands/gusto-com). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #0d2d3a in 18 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] — 23 real palettes, including Monzo's brand system and Readymag's brand system put Blue beside #0d2d3a, as the accent. Seen in: Monzo (https://brandsweets.com/colors/brands/monzo-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Headspace (https://brandsweets.com/colors/brands/headspace-com), Rolex (https://brandsweets.com/colors/brands/rolex-com). — https://brandsweets.com/colors/blue
- **Blue Violet** #8a2be2 [pool] — Blue Violet is paired with #0d2d3a in 5 real palettes, including ClickUp's brand system and Yahoo's brand system, as the lead colour. Seen in: ClickUp (https://brandsweets.com/colors/brands/clickup-com), Yahoo (https://brandsweets.com/colors/brands/yahoo-com), 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

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

- On white (#ffffff): 14.45:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.45:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #257fa2 (4.64:1); AA: background → #919191 (4.58:1); AAA: text → #2fa2d0 (7.2:1); AAA: background → #b5b5b5 (7.05:1)

## Curated palettes containing it

- **Coastal** (cool, light, clean) — #2a9d8f, #8ecae6, #e9c46a, #f7fafc, #1a2b3c — Sea-teal, sky and sand — bright without shouting; works for travel, wellness, and anything near water. — tool: https://brandsweets.com/palettes/new/2a9d8f-8ecae6-e9c46a-f7fafc-1a2b3c — collection: https://brandsweets.com/palettes/cool
- **Lido** (summer, vivid, light, playful) — #00a6c7, #ff6b6b, #ffd166, #ffffff, #12303a — Pool blue, watermelon and sun on white — the poolside summer set; the deep teal text keeps it from going juvenile. — tool: https://brandsweets.com/palettes/new/00a6c7-ff6b6b-ffd166-ffffff-12303a — collection: https://brandsweets.com/palettes/summer
- **Beach Hut** (summer, light, clean, cool) — #2e86ab, #f6bd60, #f28482, #fbfcfd, #1b2a38 — Sea blue with sun-bleached yellow and a coral — striped-canvas summer, softened so it works on a screen. — tool: https://brandsweets.com/palettes/new/2e86ab-f6bd60-f28482-fbfcfd-1b2a38 — collection: https://brandsweets.com/palettes/summer

## 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/0d2d3a-9cb4c4-df4e6b-1f232d-e9f1ef?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: "#0d2d3a" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.