Color

#3d3d8a

#3d3d8a
hex#3d3d8a
rgbrgb(61, 61, 138)
hslhsl(240, 39%, 39%)
oklchoklch(0.404 0.125 279.2)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0616

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8a8a3d

#3d638a · #633d8a

#8a3d3d · #3d8a3d

Split-complementary

Open in tool →

#8a633d · #638a3d

#8a3d63 · #8a8a3d · #3d8a63

Contrast

#3d3d8a as textRatioAAAA largeAAAFix
Aaon white
9.4:1passpasspassPasses AAA — no fix needed.
Aaon black
2.23:1failfailfail
  • AA: use #6e6ebf as the text (4.65:1)
  • AAA: use #9191cf as the text (7.16:1)
  • AA: or shift the background to #b5b5b5 (4.59:1)
  • AAA: or shift the background to #e0e0e0 (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 #3d3d8a 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

#3d3d8a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d3d8a
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

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

analyze #3d3d8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d3d8a-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