Color

#4b88dd

#4b88dd
hex#4b88dd
rgbrgb(75, 136, 221)
hslhsl(215, 68%, 58%)
oklchoklch(0.626 0.144 257.1)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2432

Colors that go with #4b88dd

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 →

#dda04b

#4bd1dd · #574bdd

#dd4b88 · #88dd4b

Split-complementary

Open in tool →

#dd574b · #d1dd4b

#dd4bd1 · #dda04b · #4bdd57

Contrast

#4b88dd as textRatioAAAA largeAAAFix
Aaon white
3.58:1failpassfail
  • AA: use #2d74d7 as the text (4.57:1)
  • AAA: use #1f56a3 as the text (7.2:1)
  • AA: or shift the background to #1f1f1f (4.6:1)
Aaon black
5.86:1passpassfail
  • AAA: use #6599e2 as the text (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4b88dd 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

#4b88dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4b88dd
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 #4b88dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4b88dd-9ca8c4-df5d4e-201f2d-e9f0f1?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