Color

#42a1cd

#42a1cd
hex#42a1cd
rgbrgb(66, 161, 205)
hslhsl(199, 58%, 53%)
oklchoklch(0.671 0.109 231.8)
Closest name: Blue Burst (#309cd0)Relative luminance 0.3106

Colors that go with #42a1cd

Charcoal, Amber and 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cd6e42

#42cdb3 · #425bcd

#cd42a1 · #a1cd42

Split-complementary

Open in tool →

#cd425b · #cdb342

#b342cd · #cd6e42 · #5bcd42

Contrast

#42a1cd as textRatioAAAA largeAAAFix
Aaon white
2.91:1failfailfail
  • AA: use #2b7ca1 as the text (4.67:1)
  • AAA: use #205d79 as the text (7.23:1)
  • AA: or shift the background to #303030 (4.53:1)
  • AAA: or shift the background to #030303 (7.08:1)
Aaon black
7.21:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #42a1cd 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

#42a1cd reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #42a1cd
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 #42a1cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42a1cd-9cb3c4-df4e66-1f232d-e9f1f0?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