Color

#3a4e83

#3a4e83
hex#3a4e83
rgbrgb(58, 78, 131)
hslhsl(224, 39%, 37%)
oklchoklch(0.434 0.091 267)
Closest name: Assassin (#2d4f83)Relative luminance 0.0799

Tints & shades

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

Harmonies

Complementary

Open in tool →

#83703a

#3a7283 · #4b3a83

#833a4d · #4d833a

Split-complementary

Open in tool →

#834b3a · #72833a

#833a72 · #83703a · #3a834b

Contrast

#3a4e83 as textRatioAAAA largeAAAFix
Aaon white
8.09:1passpasspassPasses AAA — no fix needed.
Aaon black
2.6:1failfailfail
  • AA: use #5c74b7 as the text (4.64:1)
  • AAA: use #8396c9 as the text (7.17:1)
  • AA: or shift the background to #c2c2c2 (4.54:1)
  • AAA: or shift the background to #f0f0f0 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a4e83 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

#3a4e83 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a4e83
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 #3a4e83 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a4e83-9ca2c4-df724e-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