# #210d1f

A color — warm, dark, luxury, bold. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#210d1f`
- RGB: rgb(33, 13, 31)
- HSL: hsl(306, 43%, 9%)
- OKLCH: oklch(0.198 0.046 330.9)
- Relative luminance: 0.0071
- Nearest named color: Shot in the Dark (#1d0d1d, Δ 1.032) — https://brandsweets.com/colors/shot-in-the-dark
- Moods: warm, dark, luxury, bold
- Page: https://brandsweets.com/colors/210d1f

## Tints & shades

- Tints (toward white): #421a3e, #62275d, #83347b, #a4419a, #bc57b2, #c874bf, #d595ce, #e2b6de, #efd7ed, #fcf8fc
- Shades (toward black): #210d1f, #1d0c1b, #1d0c1b, #1a0a18, #1a0a18, #160915, #160915, #120711, #120711, #0f060e

## Harmonies

- Complementary: #0d210f
- Analogous: #190d21, #210d15
- Triadic: #1f210d, #0d1f21
- Split-complementary: #15210d, #0d2119
- Tetradic: #21190d, #0d210f, #0d1521

## Colors that go with #210d1f

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 body-text near-black for #210d1f: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: PlayStation® Official Site: Consoles, Games, Accessories & MoreSony Interactive Entertainment (https://brandsweets.com/colors/brands/playstation-com), Puma (https://brandsweets.com/colors/brands/puma-com), Asana (https://brandsweets.com/colors/brands/asana-com), Vimeo (https://brandsweets.com/colors/brands/vimeo-com). — https://brandsweets.com/colors/charcoal
- **Dark Olive Green** #556b2f [harmony, pool: split] — Dark Olive Green is a split-complement of #210d1f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Warp (https://brandsweets.com/colors/brands/warp-dev), Cohere (https://brandsweets.com/colors/brands/cohere-com), Miro (https://brandsweets.com/colors/brands/miro-com), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre). — https://brandsweets.com/colors/darkolivegreen
- **Sea Green** #2e8b57 [harmony, pool: complementary] — Sea Green sits directly opposite #210d1f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Next.js (https://brandsweets.com/colors/brands/nextjs-org), Asana (https://brandsweets.com/colors/brands/asana-com), Kia (https://brandsweets.com/colors/brands/kia-com). — https://brandsweets.com/colors/seagreen
- **Slate Blue** #6a5acd [harmony, pool: analogous] — Slate Blue is #210d1f'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), Calm (https://brandsweets.com/colors/brands/calm-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/slateblue
- **Teal** #008080 [harmony, pool: split] — Teal is a split-complement of #210d1f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Clinic (https://brandsweets.com/palettes/clean#clinic), Redfin (https://brandsweets.com/colors/brands/redfin-com). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #210d1f in 18 real palettes, including Lemon Squeezy's brand system and Blueprint, as the lead colour. Seen in: Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Ember (https://brandsweets.com/palettes/bold#ember), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 22 real palettes, including Warp's brand system and League of Legends's brand system put Blue beside #210d1f, as the supporting colour. Seen in: Warp (https://brandsweets.com/colors/brands/warp-dev), League of Legends (https://brandsweets.com/colors/brands/leagueoflegends-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 #210d1f in 10 real palettes, including Gemstone and Yahoo's brand system, as the supporting colour. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), 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): 18.39:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.14:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #b649ab (4.53:1); AA: background → #808080 (4.66:1); AAA: text → #cb7cc3 (7.21:1); AAA: background → #a1a1a1 (7.12:1)

## Curated palettes containing it

- **Sunset Boulevard** (warm, vivid, bold, dark) — #ff6f61, #ffb347, #c9518b, #1a0f1f, #fff3e0 — Coral, apricot and magenta on aubergine — the gradient sunset every event brand wants, decomposed into flat tokens. — tool: https://brandsweets.com/palettes/new/ff6f61-ffb347-c9518b-1a0f1f-fff3e0 — collection: https://brandsweets.com/palettes/warm

## Fonts for this mood

- warm: https://brandsweets.com/fonts/mood/warm
- 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/210d1f-c19fb9-8acb62-2d1f26-eee9f1?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: "#210d1f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.