# #212b73 A color — cool, dark, luxury, bold, modern. Deterministic analysis from BrandSweets (no inference). ## Values - Hex: `#212b73` - RGB: rgb(33, 43, 115) - HSL: hsl(233, 55%, 29%) - OKLCH: oklch(0.329 0.123 271.7) - Relative luminance: 0.0329 - Nearest named color: Atlantic Navy (#13336f, Δ 2.535) — https://brandsweets.com/colors/atlantic-navy - Moods: cool, dark, luxury, bold, modern - Page: https://brandsweets.com/colors/212b73 ## Tints & shades - Tints (toward white): #29358e, #313faa, #394ac6, #5563ce, #717cd6, #8892dd, #a4ace5, #c0c5ed, #dbdef5, #f7f8fd - Shades (toward black): #1f286b, #1c235f, #192057, #161c4b, #141943, #101537, #0e122f, #0a0d24, #080a1c, #050610 ## Harmonies - Complementary: #736921 - Analogous: #215373, #402173 - Triadic: #73212b, #2b7321 - Split-complementary: #734021, #537321 - Tetradic: #732153, #736921, #217340 ## Colors that go with #212b73 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 #212b73: softer than #000 and cool enough to feel like part of the same palette. Seen in: CeraVe (https://brandsweets.com/colors/brands/cerave-com), Boeing (https://brandsweets.com/colors/brands/boeing-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Tumblr (https://brandsweets.com/colors/brands/tumblr-com). — https://brandsweets.com/colors/charcoal - **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #212b73's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Plaid (https://brandsweets.com/colors/brands/plaid-com), Glacier (https://brandsweets.com/palettes/cool#glacier), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/steelblue - **Blue** #0000ff [pool] — 5 real palettes, including Alaska Airlines's brand system and Procter & Gamble's brand system put Blue beside #212b73, as the accent. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), Sketch (https://brandsweets.com/colors/brands/sketch-com), Monzo (https://brandsweets.com/colors/brands/monzo-com). — https://brandsweets.com/colors/blue - **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #212b73: 4 real palettes, including Purina Pro Plan's brand system and Blue Mono, as the accent. Seen in: Purina Pro Plan (https://brandsweets.com/colors/brands/chewy-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), MLB (https://brandsweets.com/colors/brands/mlb-com), Unilever (https://brandsweets.com/colors/brands/unilever-com). — https://brandsweets.com/colors/cobalt - **Crimson** #dc143c [pool] — Crimson is paired with #212b73 in 7 real palettes, including Casper Sleep's brand system and Nintendo's brand system, as the lead colour. Seen in: Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Nintendo (https://brandsweets.com/colors/brands/nintendo-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson - **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #212b73: 4 real palettes, including Kraken's brand system and Lamborghini's brand system, as the accent. Seen in: Kraken (https://brandsweets.com/colors/brands/kraken-com), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), Vimeo (https://brandsweets.com/colors/brands/vimeo-com), Deep Water (https://brandsweets.com/palettes/dark#deep-water). — https://brandsweets.com/colors/deepskyblue - **Denim** #1560bd [pool] — Designers have shipped Denim with #212b73: 17 real palettes, including Panasonic's brand system and Bank of America's brand system, as the accent. Seen in: Panasonic (https://brandsweets.com/colors/brands/panasonic-com), Bank of America (https://brandsweets.com/colors/brands/bankofamerica-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-com), Skechers (https://brandsweets.com/colors/brands/skechers-com). — https://brandsweets.com/colors/denim - **Light Sea Green** #20b2aa [pool] — Light Sea Green shows up next to #212b73 in 4 real palettes, including Confluent's brand system and Taco Bell's brand system, as the accent. Seen in: Confluent (https://brandsweets.com/colors/brands/confluent-io), Taco Bell (https://brandsweets.com/colors/brands/tacobell-com), Ford (https://brandsweets.com/colors/brands/ford-com), Lido (https://brandsweets.com/palettes/vivid#lido). — https://brandsweets.com/colors/lightseagreen ## Contrast (WCAG 2.x, as text) - On white (#ffffff): 12.67:1 — AA pass, AA-large pass, AAA pass - On black (#000000): 1.66:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #616ed1 (4.66:1); AA: background → #9c9c9c (4.61:1); AAA: text → #8892dd (7.2:1); AAA: background → #c2c2c2 (7.11:1) ## Brands using this color - **Casper Sleep** — accent #1e306e (Δ 1.625) — https://brandsweets.com/colors/brands/casper-com - **Gillette** — accent #182f6e (Δ 1.657) — https://brandsweets.com/colors/brands/gillette-com ## Fonts for this mood - luxury: https://brandsweets.com/fonts/mood/luxury - bold: https://brandsweets.com/fonts/mood/bold - modern: https://brandsweets.com/fonts/mood/modern ## Palette tool Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/212b73-9c9cc4-df884e-241f2d-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: "#212b73" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.