Color

#42dbfa

#42dbfa
hex#42dbfa
rgbrgb(66, 219, 250)
hslhsl(190, 95%, 62%)
oklchoklch(0.826 0.13 214.6)
Closest name: Sky Blue (#87ceeb)Relative luminance 0.5872

Colors that go with #42dbfa

Charcoal, Dodger Blue and Taupe 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.

Real palettes that use #42dbfa

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fa6142

#42fabd · #427ffa

#fa42db · #dbfa42

Split-complementary

Open in tool →

#fa427f · #fabd42

#bd42fa · #fa6142 · #7ffa42

Contrast

#42dbfa as textRatioAAAA largeAAAFix
Aaon white
1.65:1failfailfail
  • AA: use #04819a as the text (4.55:1)
  • AAA: use #036072 as the text (7.19:1)
  • AA: or shift the background to #545454 (4.6:1)
  • AAA: or shift the background to #383838 (7.12:1)
Aaon black
12.74:1passpasspassPasses 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 #42dbfa as the background.

Brands using this color

Fonts for this mood

#42dbfa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

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

tool url/palettes/new/42dbfa-a2b6be-df4e7c-1f252d-e9f1ef?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