# #030d3f

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

## Values

- Hex: `#030d3f`
- RGB: rgb(3, 13, 63)
- HSL: hsl(230, 91%, 13%)
- OKLCH: oklch(0.195 0.096 265.8)
- Relative luminance: 0.0067
- Nearest named color: Infinite Night (#071037, Δ 1.889) — https://brandsweets.com/colors/infinite-night
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/030d3f

## Tints & shades

- Tints (toward white): #05166b, #071e92, #0927be, #0b2fe5, #294bf5, #506cf7, #7b90f9, #a2b1fb, #ced6fd, #f5f7ff
- Shades (toward black): #030c3a, #030b36, #020a31, #02092c, #02092c, #020827, #020722, #01061d, #010518, #010413

## Harmonies

- Complementary: #3f3503
- Analogous: #032b3f, #17033f
- Triadic: #3f030d, #0d3f03
- Split-complementary: #3f1703, #2b3f03
- Tetradic: #3f032b, #3f3503, #033f17

## Colors that go with #030d3f

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 #030d3f: 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 #030d3f — 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 #030d3f — 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
- **Slate Blue** #6a5acd [harmony, pool: analogous] — Slate Blue is #030d3f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Sentry (https://brandsweets.com/colors/brands/sentry-io), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Linear (https://brandsweets.com/colors/brands/linear), Calm (https://brandsweets.com/colors/brands/calm-com). — https://brandsweets.com/colors/slateblue
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #030d3f'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), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #030d3f 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 #030d3f, 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
- **Blue Violet** #8a2be2 [pool] — Blue Violet is paired with #030d3f in 10 real palettes, including Gemstone and Twitch's brand system, as the supporting colour. 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

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

- On white (#ffffff): 18.53:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.13:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #4b67f7 (4.58:1); AA: background → #7d7d7d (4.5:1); AAA: text → #7b90f9 (7.2:1); AAA: background → #a1a1a1 (7.17:1)

## Brands using this color

- **Allbirds** — secondary #090c43 (Δ 1.23) — https://brandsweets.com/colors/brands/allbirds-com
- **Paramount+** — secondary #000a3c (Δ 1.284) — https://brandsweets.com/colors/brands/paramountplus-com
- **Air France** — primary #051039 (Δ 1.449) — 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/030d3f-9c9ec4-df814e-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: "#030d3f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.