Color

#4b54ce

#4b54ce
hex#4b54ce
rgbrgb(75, 84, 206)
hslhsl(236, 57%, 55%)
oklchoklch(0.511 0.186 274.5)
Closest name: Arcane Brew (#5260e1)Relative luminance 0.1229

Colors that go with #4b54ce

Charcoal, Sea Green and Amber 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cec54b

#4b95ce · #844bce

#ce4b54 · #54ce4b

Split-complementary

Open in tool →

#ce844b · #95ce4b

#ce4b95 · #cec54b · #4bce84

Contrast

#4b54ce as textRatioAAAA largeAAAFix
Aaon white
6.07:1passpassfail
  • AAA: use #3f48ca as the text (7.02:1)
Aaon black
3.46:1failpassfail
  • AA: use #636ad4 as the text (4.54:1)
  • AAA: use #8b91df as the text (7.21:1)
  • AA: or shift the background to #dedede (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4b54ce as the background.

Brands using this color

Fonts for this mood

#4b54ce reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4b54ce
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 #4b54ce and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4b54ce-9e9cc4-df8f4e-241f2d-e9eef1?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