Color

#243266

#243266
hex#243266
rgbrgb(36, 50, 102)
hslhsl(227, 48%, 27%)
oklchoklch(0.335 0.093 269.5)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.0362

Colors that go with #243266

Steel Blue, Dark Olive Green and Blush Pink lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Real palettes that use #243266

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#665824

#245366 · #372466

#662432 · #326624

Split-complementary

Open in tool →

#663724 · #536624

#662453 · #665824 · #246637

Contrast

#243266 as textRatioAAAA largeAAAFix
Aaon white
12.19:1passpasspassPasses AAA — no fix needed.
Aaon black
1.72:1failfailfail
  • AA: use #5970c5 as the text (4.55:1)
  • AAA: use #8294d3 as the text (7.13:1)
  • AA: or shift the background to #9e9e9e (4.55:1)
  • AAA: or shift the background to #c7c7c7 (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #243266 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#243266 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #243266
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #243266 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/243266-9ca0c4-df7a4e-221f2d-e9eff1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md