Color

#4b458c

#4b458c
hex#4b458c
rgbrgb(75, 69, 140)
hslhsl(245, 34%, 41%)
oklchoklch(0.433 0.114 284.4)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0765

Colors that go with #4b458c

Charcoal, Sea Green and Steel 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.

Real palettes that use #4b458c

Tints & shades

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

Harmonies

Complementary

Open in tool →

#868c45

#45638c · #6e458c

#8c4b45 · #458c4b

Split-complementary

Open in tool →

#8c6e45 · #638c45

#8c4563 · #868c45 · #458c6e

Contrast

#4b458c as textRatioAAAA largeAAAFix
Aaon white
8.3:1passpasspassPasses AAA — no fix needed.
Aaon black
2.53:1failfailfail
  • AA: use #726cb7 as the text (4.54:1)
  • AAA: use #9692c9 as the text (7.25:1)
  • AA: or shift the background to #bfbfbf (4.52:1)
  • AAA: or shift the background to #ededed (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 #4b458c 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 #4b458c
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 #4b458c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4b458c-a49cc4-dfa54e-261f2d-e9ecf1?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