Color

#4b57be

#4b57be
hex#4b57be
rgbrgb(75, 87, 190)
hslhsl(234, 47%, 52%)
oklchoklch(0.504 0.16 274.1)
Closest name: God of Rain (#4466cc)Relative luminance 0.1203

Colors that go with #4b57be

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 →

#beb34b

#4b90be · #794bbe

#be4b57 · #57be4b

Split-complementary

Open in tool →

#be794b · #90be4b

#be4b90 · #beb34b · #4bbe79

Contrast

#4b57be as textRatioAAAA largeAAAFix
Aaon white
6.17:1passpassfail
  • AAA: use #414cb4 as the text (7.2:1)
Aaon black
3.41:1failpassfail
  • AA: use #656fc8 as the text (4.66:1)
  • AAA: use #8b92d5 as the text (7.17:1)
  • AA: or shift the background to #dedede (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4b57be 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

#4b57be reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4b57be
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 #4b57be and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4b57be-9d9cc4-df8a4e-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