Color

#4e3989

#4e3989
hex#4e3989
rgbrgb(78, 57, 137)
hslhsl(256, 41%, 38%)
oklchoklch(0.411 0.128 291.9)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0635

Tints & shades

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

Harmonies

Complementary

Open in tool →

#738939

#394c89 · #763989

#894e39 · #39894e

Split-complementary

Open in tool →

#897639 · #4c8939

#89394c · #738939 · #398976

Contrast

#4e3989 as textRatioAAAA largeAAAFix
Aaon white
9.25:1passpasspassPasses AAA — no fix needed.
Aaon black
2.27:1failfailfail
  • AA: use #7f68c0 as the text (4.64:1)
  • AAA: use #9e8ccf as the text (7.11:1)
  • AA: or shift the background to #b5b5b5 (4.51:1)
  • AAA: or shift the background to #e0e0e0 (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 #4e3989 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

#4e3989 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4e3989
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 #4e3989 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4e3989-ab9cc4-dfbf4e-291f2d-e9ebf1?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