Color

#4d88cb

#4d88cb
hex#4d88cb
rgbrgb(77, 136, 203)
hslhsl(212, 55%, 55%)
oklchoklch(0.617 0.12 252.9)
Closest name: Blue Jay (#5588dd)Relative luminance 0.235

Colors that go with #4d88cb

Charcoal, Copper 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 →

#cb904d

#4dc7cb · #514dcb

#cb4d88 · #88cb4d

Split-complementary

Open in tool →

#cb514d · #c7cb4d

#cb4dc7 · #cb904d · #4dcb51

Contrast

#4d88cb as textRatioAAAA largeAAAFix
Aaon white
3.68:1failpassfail
  • AA: use #3878c2 as the text (4.53:1)
  • AAA: use #29588e as the text (7.29:1)
  • AA: or shift the background to #1c1c1c (4.63:1)
Aaon black
5.7:1passpassfail
  • AAA: use #699bd3 as the text (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4d88cb as the background.

Brands using this color

Fonts for this mood

#4d88cb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4d88cb
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 #4d88cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4d88cb-9caac4-df564e-1f202d-e9f1f1?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