Color

#3a3a6e

#3a3a6e
hex#3a3a6e
rgbrgb(58, 58, 110)
hslhsl(240, 31%, 33%)
oklchoklch(0.376 0.087 281.3)
Closest name: Evening Magic (#363e7d)Relative luminance 0.0505

Colors that go with #3a3a6e

Steel Blue, Teal and 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 →

#6e6e3a

#3a546e · #543a6e

#6e3a3a · #3a6e3a

Split-complementary

Open in tool →

#6e543a · #546e3a

#6e3a54 · #6e6e3a · #3a6e54

Contrast

#3a3a6e as textRatioAAAA largeAAAFix
Aaon white
10.45:1passpasspassPasses AAA — no fix needed.
Aaon black
2.01:1failfailfail
  • AA: use #6f6fb3 as the text (4.6:1)
  • AAA: use #9191c5 as the text (7.06:1)
  • AA: or shift the background to #ababab (4.55:1)
  • AAA: or shift the background to #d4d4d4 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a3a6e as the background.

Brands using this color

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

mcpConnect your agent — build around #3a3a6e
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 #3a3a6e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a3a6e-a19cc4-df994e-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