# #010d18

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

## Values

- Hex: `#010d18`
- RGB: rgb(1, 13, 24)
- HSL: hsl(209, 92%, 5%)
- OKLCH: oklch(0.152 0.032 241.6)
- Relative luminance: 0.0036
- Nearest named color: Black Knight (#010b13, Δ 1.227) — https://brandsweets.com/colors/black-knight
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/010d18

## Tints & shades

- Tints (toward white): #032545, #053f76, #0757a2, #096ece, #1488f5, #409ff7, #6cb5f9, #98cbfb, #c9e4fd, #f5faff
- Shades (toward black): #010d18, #010d18, #010d18, #010d18, #010d18, #010b14, #010b14, #010b14, #010b14, #010b14

## Harmonies

- Complementary: #180c01
- Analogous: #011818, #010118
- Triadic: #18010d, #0d1801
- Split-complementary: #180101, #181801
- Tetradic: #180118, #180c01, #011801

## Colors that go with #010d18

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 #010d18: softer than #000 and cool enough to feel like part of the same palette. 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
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #010d18's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Framer (https://brandsweets.com/colors/brands/framer), Foot Locker (https://brandsweets.com/colors/brands/footlocker-com), Webflow (https://brandsweets.com/colors/brands/webflow-com). — https://brandsweets.com/colors/royalblue
- **Rust** #b7410e [harmony, pool: split] — Rust is a split-complement of #010d18: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Noir Beauty (https://brandsweets.com/palettes/dark#noir-beauty), Semrush (https://brandsweets.com/colors/brands/semrush-com), Wayfair (https://brandsweets.com/colors/brands/wayfair-com), Garnet (https://brandsweets.com/palettes/warm#garnet). — https://brandsweets.com/colors/rust
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #010d18 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Oatly (https://brandsweets.com/colors/brands/oatly-com), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/sienna
- **Teal** #008080 [harmony, pool: analogous] — Teal is #010d18's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Redfin (https://brandsweets.com/colors/brands/redfin-com), Perplexity (https://brandsweets.com/colors/brands/perplexity), Clinic (https://brandsweets.com/palettes/clean#clinic). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #010d18 in 16 real palettes, including Southwest Airlines's brand system and Ahrefs's brand system, as the accent. Seen in: Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com), 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). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 18 real palettes, including Kia's brand system and Pfizer's brand system put Blue beside #010d18, as the accent. Seen in: Kia (https://brandsweets.com/colors/brands/kia-com), Pfizer (https://brandsweets.com/colors/brands/pfizer-com), MongoDB (https://brandsweets.com/colors/brands/mongodb-com), native Cybersecurity (https://brandsweets.com/colors/brands/crowdstrike-com). — https://brandsweets.com/colors/blue
- **Blue Violet** #8a2be2 [pool] — Blue Violet is paired with #010d18 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), Render (https://brandsweets.com/colors/brands/render-com), Circuit (https://brandsweets.com/palettes/technical#circuit). — https://brandsweets.com/colors/blueviolet

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

- On white (#ffffff): 19.59:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.07:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #0976dc (4.64:1); AA: background → #7a7a7a (4.56:1); AAA: text → #369af7 (7.12:1); AAA: background → #9c9c9c (7.13:1)

## Brands using this color

- **Audible** — text #010e19 (Δ 0.417) — https://brandsweets.com/colors/brands/audible-com
- **Rare Beauty** — primary #000914 (Δ 1.813) — https://brandsweets.com/colors/brands/rarebeauty-com
- **Rare Beauty** — text #000914 (Δ 1.813) — https://brandsweets.com/colors/brands/rarebeauty-com
- **Airbus** — primary #070b11 (Δ 1.89) — https://brandsweets.com/colors/brands/airbus-com
- **Airbus** — text #070b11 (Δ 1.89) — https://brandsweets.com/colors/brands/airbus-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/010d18-9cacc4-df4e4e-1f212d-e9f1f1?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: "#010d18" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.