# #021b1d

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

## Values

- Hex: `#021b1d`
- RGB: rgb(2, 27, 29)
- HSL: hsl(184, 87%, 6%)
- OKLCH: oklch(0.203 0.032 202.1)
- Relative luminance: 0.0089
- Nearest named color: Black Stallion (#0e191c, Δ 1.618) — https://brandsweets.com/colors/black-stallion
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/021b1d

## Tints & shades

- Tints (toward white): #054348, #086b72, #0b98a2, #0ec0cd, #1ae1ef, #45e7f2, #70ecf5, #a0f2f8, #cbf8fb, #f5fefe
- Shades (toward black): #021b1d, #021b1d, #021618, #021618, #021618, #021618, #021618, #011213, #011213, #011213

## Harmonies

- Complementary: #1d0402
- Analogous: #021d11, #020e1d
- Triadic: #1d021b, #1b1d02
- Split-complementary: #1d020e, #1d1102
- Tetradic: #11021d, #1d0402, #0e1d02

## Colors that go with #021b1d

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 #021b1d: softer than #000 and cool enough to feel like part of the same palette. Seen in: Vimeo (https://brandsweets.com/colors/brands/vimeo-com), Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com), Puma (https://brandsweets.com/colors/brands/puma-com), Asana (https://brandsweets.com/colors/brands/asana-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: complementary] — Crimson sits directly opposite #021b1d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Chase (https://brandsweets.com/colors/brands/chase-com), Huawei (https://brandsweets.com/colors/brands/huawei-com), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Foot Locker (https://brandsweets.com/colors/brands/footlocker-com). — https://brandsweets.com/colors/crimson
- **Sienna** #a0522d [harmony, pool: split] — Sienna is a split-complement of #021b1d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. 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
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #021b1d's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Launch Orange (https://brandsweets.com/palettes/bold#launch-orange), American Express (https://brandsweets.com/colors/brands/americanexpress-com), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: analogous] — Teal is #021b1d's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Perplexity (https://brandsweets.com/colors/brands/perplexity), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), N26 (https://brandsweets.com/colors/brands/n26-com), Clinic (https://brandsweets.com/palettes/clean#clinic). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #021b1d in 18 real palettes, including Warner Bros.'s brand system and Lemon Squeezy's brand system, as the accent. Seen in: Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 24 real palettes, including MongoDB's brand system and Monzo's brand system put Blue beside #021b1d, as the accent. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Monzo (https://brandsweets.com/colors/brands/monzo-com), Kia (https://brandsweets.com/colors/brands/kia-com), CVS (https://brandsweets.com/colors/brands/cvs-com). — https://brandsweets.com/colors/blue
- **Blue Violet** #8a2be2 [pool] — Blue Violet is paired with #021b1d in 10 real palettes, including Yahoo's brand system and Prepare your taste buds...'s brand system, as the supporting colour. Seen in: 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), Taco Bell (https://brandsweets.com/colors/brands/tacobell-com). — https://brandsweets.com/colors/blueviolet

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

- On white (#ffffff): 17.84:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.18:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #0a828a (4.57:1); AA: background → #808080 (4.52:1); AAA: text → #0ca5b0 (7.02:1); AAA: background → #a3a3a3 (7.07:1)

## Brands using this color

- **Perplexity** — text #091717 (Δ 1.711) — https://brandsweets.com/colors/brands/perplexity

## 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/021b1d-a2b9be-df4e8a-1f262d-e9f1ee?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: "#021b1d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.