Color

#3437da

#3437da
hex#3437da
rgbrgb(52, 55, 218)
hslhsl(239, 69%, 53%)
oklchoklch(0.463 0.238 271.5)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0852

Colors that go with #3437da

Charcoal, Sea Green and Amber 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dad734

#348ada · #8434da

#da3437 · #37da34

Split-complementary

Open in tool →

#da8434 · #8ada34

#da348a · #dad734 · #34da84

Contrast

#3437da as textRatioAAAA largeAAAFix
Aaon white
7.76:1passpasspassPasses AAA — no fix needed.
Aaon black
2.7:1failfailfail
  • AA: use #6466e3 as the text (4.55:1)
  • AAA: use #8b8cea as the text (7.04:1)
  • AA: or shift the background to #c7c7c7 (4.59:1)
  • AAA: or shift the background to #f5f5f5 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3437da 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

#3437da reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3437da
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 #3437da and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3437da-a09cc4-df964e-251f2d-e9edf1?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