Color

#3d4e85

#3d4e85
hex#3d4e85
rgbrgb(61, 78, 133)
hslhsl(226, 37%, 38%)
oklchoklch(0.437 0.093 269.3)
Closest name: Assassin (#2d4f83)Relative luminance 0.0813

Tints & shades

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

Harmonies

Complementary

Open in tool →

#85743d

#3d7285 · #503d85

#853d4e · #4e853d

Split-complementary

Open in tool →

#85503d · #72853d

#853d72 · #85743d · #3d8550

Contrast

#3d4e85 as textRatioAAAA largeAAAFix
Aaon white
7.99:1passpasspassPasses AAA — no fix needed.
Aaon black
2.63:1failfailfail
  • AA: use #5e73b5 as the text (4.6:1)
  • AAA: use #8594c7 as the text (7.06:1)
  • AA: or shift the background to #c4c4c4 (4.58:1)
  • AAA: or shift the background to #f0f0f0 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d4e85 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

#3d4e85 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d4e85
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 #3d4e85 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d4e85-9ca1c4-df774e-221f2d-e9eff1?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