# #121c69 A color — cool, vivid, dark, technical, modern, luxury, bold. Deterministic analysis from BrandSweets (no inference). ## Values - Hex: `#121c69` - RGB: rgb(18, 28, 105) - HSL: hsl(233, 71%, 24%) - OKLCH: oklch(0.281 0.133 269.3) - Relative luminance: 0.0198 - Nearest named color: midnightblue (#191970, Δ 1.542) — https://brandsweets.com/colors/midnightblue - Moods: cool, vivid, dark, technical, modern, luxury, bold - Page: https://brandsweets.com/colors/121c69 ## Tints & shades - Tints (toward white): #172487, #1d2daa, #2235c9, #364add, #5565e2, #7381e7, #96a0ed, #b5bcf2, #d8dcf8, #f6f7fe - Shades (toward black): #101a60, #0f1757, #0d154e, #0c1346, #0a103d, #090e34, #070c2c, #060923, #04071a, #030511 ## Harmonies - Complementary: #695f12 - Analogous: #124769, #331269 - Triadic: #69121c, #1c6912 - Split-complementary: #693312, #476912 - Tetradic: #691247, #695f12, #126933 ## Colors that go with #121c69 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 #121c69: 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), Plaid (https://brandsweets.com/colors/brands/plaid-com), Microsoft (https://brandsweets.com/colors/brands/microsoft-com). — https://brandsweets.com/colors/charcoal - **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #121c69's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Deep Water (https://brandsweets.com/palettes/dark#deep-water), Glacier (https://brandsweets.com/palettes/cool#glacier), Plaid (https://brandsweets.com/colors/brands/plaid-com), Discover (https://brandsweets.com/colors/brands/discover-com). — https://brandsweets.com/colors/steelblue - **Blue** #0000ff [pool] — 4 real palettes, including Monzo's brand system and Penpot's brand system put Blue beside #121c69, as the accent. Seen in: Monzo (https://brandsweets.com/colors/brands/monzo-com), Penpot (https://brandsweets.com/colors/brands/penpot-app), Sketch (https://brandsweets.com/colors/brands/sketch-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com). — https://brandsweets.com/colors/blue - **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #121c69: 6 real palettes, including SoFi's brand system and Open House, as the supporting colour. Seen in: SoFi (https://brandsweets.com/colors/brands/sofi-com), Open House (https://brandsweets.com/palettes/clean#open-house), Coastal (https://brandsweets.com/palettes/cool#coastal), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/cadetblue - **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #121c69: 7 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), Glacier (https://brandsweets.com/palettes/cool#glacier), MLB (https://brandsweets.com/colors/brands/mlb-com). — https://brandsweets.com/colors/cobalt - **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #121c69: 4 real palettes, including Blue Mono and Peacock's brand system, as the supporting colour. Seen in: Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Peacock (https://brandsweets.com/colors/brands/peacocktv-com), Arctic (https://brandsweets.com/palettes/clean#arctic), Blueprint (https://brandsweets.com/palettes/technical#blueprint). — https://brandsweets.com/colors/cornflowerblue - **Crimson** #dc143c [pool] — Crimson is paired with #121c69 in 5 real palettes, including Nintendo's brand system and Casper Sleep's brand system, as the supporting colour. Seen in: Nintendo (https://brandsweets.com/colors/brands/nintendo-com), Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Pepsi (https://brandsweets.com/colors/brands/pepsi-com). — https://brandsweets.com/colors/crimson - **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #121c69: 4 real palettes, including Kraken's brand system and Deep Water, as the accent. Seen in: Kraken (https://brandsweets.com/colors/brands/kraken-com), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Vimeo (https://brandsweets.com/colors/brands/vimeo-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint). — https://brandsweets.com/colors/deepskyblue ## Contrast (WCAG 2.x, as text) - On white (#ffffff): 15.05:1 — AA pass, AA-large pass, AAA pass - On black (#000000): 1.4:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5969e3 (4.55:1); AA: background → #8f8f8f (4.65:1); AAA: text → #8591ea (7.24:1); AAA: background → #b3b3b3 (7.18:1) ## Brands using this color - **Crest** — accent #0e1c63 (Δ 1.183) — https://brandsweets.com/colors/brands/crest-com - **Bank of America** — secondary #012169 (Δ 1.652) — https://brandsweets.com/colors/brands/bankofamerica-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/121c69-9c9cc4-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: "#121c69" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.