Color

#3d4ebd

#3d4ebd
hex#3d4ebd
rgbrgb(61, 78, 189)
hslhsl(232, 51%, 49%)
oklchoklch(0.478 0.174 271.5)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1012

Colors that go with #3d4ebd

Charcoal, Sea Green and Steel Blue 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 →

#bdac3d

#3d8ebd · #6c3dbd

#bd3d4e · #4ebd3d

Split-complementary

Open in tool →

#bd6c3d · #8ebd3d

#bd3d8e · #bdac3d · #3dbd6c

Contrast

#3d4ebd as textRatioAAAA largeAAAFix
Aaon white
6.95:1passpassfail
  • AAA: use #3c4db9 as the text (7.11:1)
Aaon black
3.02:1failpassfail
  • AA: use #616fcc as the text (4.65:1)
  • AAA: use #8892d8 as the text (7.15:1)
  • AA: or shift the background to #d1d1d1 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d4ebd 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

#3d4ebd reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d4ebd
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 #3d4ebd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d4ebd-9c9dc4-df864e-231f2d-e9eef1?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