Color

#3d628a

#3d628a
hex#3d628a
rgbrgb(61, 98, 138)
hslhsl(211, 39%, 39%)
oklchoklch(0.486 0.077 251.4)
Closest name: Admiral Blue (#50647f)Relative luminance 0.1156

Colors that go with #3d628a

Charcoal, Sienna 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 →

#8a653d

#3d898a · #3e3d8a

#8a3d62 · #628a3d

Split-complementary

Open in tool →

#8a3e3d · #898a3d

#8a3d89 · #8a653d · #3d8a3e

Contrast

#3d628a as textRatioAAAA largeAAAFix
Aaon white
6.34:1passpassfail
  • AAA: use #385b80 as the text (7.06:1)
Aaon black
3.31:1failpassfail
  • AA: use #4b79aa as the text (4.61:1)
  • AAA: use #759ac2 as the text (7.16:1)
  • AA: or shift the background to #dbdbdb (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d628a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#3d628a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d628a
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 #3d628a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d628a-9cabc4-df534e-1f202d-e9f1f1?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