# #040d10

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

## Values

- Hex: `#040d10`
- RGB: rgb(4, 13, 16)
- HSL: hsl(195, 60%, 4%)
- OKLCH: oklch(0.151 0.017 218.1)
- Relative luminance: 0.0035
- Nearest named color: Dark Rift (#060b14, Δ 1.445) — https://brandsweets.com/colors/dark-rift
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/040d10

## Tints & shades

- Tints (toward white): #0d2b35, #174c5e, #216a83, #2b8bab, #37a8cd, #5cb8d6, #85c9e0, #a9daea, #d2ebf4, #f7fbfd
- Shades (toward black): #040d10, #040d10, #040d10, #040d10, #040d10, #040d10, #040d10, #040d10, #040d10, #040d10

## Harmonies

- Complementary: #100704
- Analogous: #04100d, #040710
- Triadic: #10040d, #0d1004
- Split-complementary: #100407, #100d04
- Tetradic: #0d0410, #100704, #071004

## Colors that go with #040d10

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 that reads cleanly against #040d10 without the hard edge of pure #000. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Amazon (https://brandsweets.com/colors/brands/amazon-com), Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com). — https://brandsweets.com/colors/charcoal
- **Amber** #ffbf00 [pool] — Amber is paired with #040d10 in 16 real palettes, including Ahrefs's brand system and Mastodon hosted on mastodon.social's brand system, as the supporting colour. Seen in: 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), Salesforce (https://brandsweets.com/colors/brands/salesforce-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 18 real palettes, including Pfizer's brand system and Robinhood's brand system put Blue beside #040d10, as the supporting colour. Seen in: Pfizer (https://brandsweets.com/colors/brands/pfizer-com), Robinhood (https://brandsweets.com/colors/brands/robinhood-com), native Cybersecurity (https://brandsweets.com/colors/brands/crowdstrike-com), EA (https://brandsweets.com/colors/brands/ea-com). — https://brandsweets.com/colors/blue
- **Blue Violet** #8a2be2 [pool] — Blue Violet is paired with #040d10 in 10 real palettes, including Circuit and Render's brand system, as the lead colour. Seen in: Circuit (https://brandsweets.com/palettes/technical#circuit), Render (https://brandsweets.com/colors/brands/render-com), Twitch (https://brandsweets.com/colors/brands/twitch-tv), Neobank (https://brandsweets.com/palettes/vivid#neobank). — https://brandsweets.com/colors/blueviolet
- **Brown** #a52a2a [pool] — 4 real palettes, including Velvet and State Farm's brand system put Brown beside #040d10, as the lead colour. Seen in: Velvet (https://brandsweets.com/palettes/luxury#velvet), State Farm (https://brandsweets.com/colors/brands/statefarm-com), Garnet (https://brandsweets.com/palettes/warm#garnet), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke). — https://brandsweets.com/colors/brown
- **Burgundy** #800020 [pool] — 4 real palettes, including Rare Beauty's brand system and Mailchimp's brand system put Burgundy beside #040d10, as the supporting colour. Seen in: Rare Beauty (https://brandsweets.com/colors/brands/rarebeauty-com), Mailchimp (https://brandsweets.com/colors/brands/mailchimp-com), Qatar Airways (https://brandsweets.com/colors/brands/qatarairways-com), Candlelight (https://brandsweets.com/palettes/warm#candlelight). — https://brandsweets.com/colors/burgundy
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #040d10: 7 real palettes, including Estate and Arctic, as the supporting colour. Seen in: Estate (https://brandsweets.com/palettes/luxury#estate), Arctic (https://brandsweets.com/palettes/clean#arctic), Diner (https://brandsweets.com/palettes/vivid#diner), Alpine (https://brandsweets.com/palettes/cool#alpine). — https://brandsweets.com/colors/cadetblue
- **Champagne** #f7e7ce [pool] — 9 real palettes, including Midnight Luxe and Sweetgreen's brand system put Champagne beside #040d10, as the text colour against it. Seen in: Midnight Luxe (https://brandsweets.com/palettes/luxury#midnight-luxe), Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Bramble (https://brandsweets.com/palettes/muted#bramble). — https://brandsweets.com/colors/champagne

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

- On white (#ffffff): 19.62:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.07:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #277e9b (4.54:1); AA: background → #7a7a7a (4.57:1); AAA: text → #32a2c8 (7.14:1); AAA: background → #9c9c9c (7.15:1)

## Brands using this color

- **Airbus** — primary #070b11 (Δ 1.094) — https://brandsweets.com/colors/brands/airbus-com
- **Airbus** — text #070b11 (Δ 1.094) — https://brandsweets.com/colors/brands/airbus-com
- **Coinbase** — text #0a0b0d (Δ 1.414) — https://brandsweets.com/colors/brands/coinbase
- **Bun** — text #0a0a0a (Δ 1.782) — https://brandsweets.com/colors/brands/bun-sh
- **Framer** — text #0a0a0a (Δ 1.782) — https://brandsweets.com/colors/brands/framer
- **MetaMask** — primary #0a0a0a (Δ 1.782) — https://brandsweets.com/colors/brands/metamask-io
- **MetaMask** — text #0a0a0a (Δ 1.782) — https://brandsweets.com/colors/brands/metamask-io
- **Pfizer** — primary #0a0a0a (Δ 1.782) — https://brandsweets.com/colors/brands/pfizer-com
- **Pfizer** — text #0a0a0a (Δ 1.782) — https://brandsweets.com/colors/brands/pfizer-com
- **Olympics** — text #0d0d10 (Δ 1.85) — https://brandsweets.com/colors/brands/olympics-com
- **Asana** — text #0d0d0d (Δ 1.891) — https://brandsweets.com/colors/brands/asana-com
- **Render** — text #0d0d0d (Δ 1.891) — https://brandsweets.com/colors/brands/render-com
- **Linear** — text #0d0e10 (Δ 1.92) — https://brandsweets.com/colors/brands/linear
- **Audible** — text #010e19 (Δ 1.929) — https://brandsweets.com/colors/brands/audible-com

## Curated palettes containing it

- **Terminal** (technical, dark, modern) — #3fb950, #58a6ff, #f778ba, #0b0f14, #e6edf3 — Green for success, blue for links, pink for emphasis — the dark-mode developer family, tuned to sit on near-black without glare. — tool: https://brandsweets.com/palettes/new/3fb950-58a6ff-f778ba-0b0f14-e6edf3 — collection: https://brandsweets.com/palettes/technical
- **Circuit** (technical, vivid, bold) — #7c3aed, #0a0a0a, #06b6d4, #ffffff — Violet plus cyan is the current AI-product signal — pair it with pure black type to keep it from going candy. — tool: https://brandsweets.com/palettes/new/7c3aed-0a0a0a-06b6d4-ffffff — collection: https://brandsweets.com/palettes/technical
- **Streetwear** (bold, vivid, dark) — #ff3b30, #ffffff, #ffe600, #0a0a0a — Black, white, red, yellow — drop-culture signal colors, unmissable at thumbnail size. — tool: https://brandsweets.com/palettes/new/ff3b30-ffffff-ffe600-0a0a0a — collection: https://brandsweets.com/palettes/bold
- **Noir Beauty** (dark, luxury, bold) — #d4af37, #8a8a8a, #c0392b, #0d0d0d, #f5f5f5 — Black, gold and one deep red — the prestige cosmetics counter: all restraint and a single lipstick. — tool: https://brandsweets.com/palettes/new/d4af37-8a8a8a-c0392b-0d0d0d-f5f5f5 — collection: https://brandsweets.com/palettes/dark
- **Midnight Luxe** (luxury, dark, elegant) — #cbb26a, #8b83a8, #b8b8c8, #0a0a12, #efe9dd — Champagne gold on ink-navy with a violet undertone — hotels and spirits use it because it reads expensive at any size. — tool: https://brandsweets.com/palettes/new/cbb26a-8b83a8-b8b8c8-0a0a12-efe9dd — collection: https://brandsweets.com/palettes/luxury

## 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/040d10-9cb5c4-df4e70-1f242d-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: "#040d10" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.