Color

#3ab5f2

#3ab5f2
hex#3ab5f2
rgbrgb(58, 181, 242)
hslhsl(200, 88%, 59%)
oklchoklch(0.733 0.137 235.2)
Closest name: Blue Bikini (#00bbee)Relative luminance 0.4036

Colors that go with #3ab5f2

Charcoal, Dark Orange 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 →

#f2783a

#3af2d4 · #3a59f2

#f23ab5 · #b5f23a

Split-complementary

Open in tool →

#f23a59 · #f2d43a

#d43af2 · #f2783a · #59f23a

Contrast

#3ab5f2 as textRatioAAAA largeAAAFix
Aaon white
2.31:1failfailfail
  • AA: use #0c7db6 as the text (4.54:1)
  • AAA: use #095c86 as the text (7.27:1)
  • AA: or shift the background to #3d3d3d (4.69:1)
  • AAA: or shift the background to #1f1f1f (7.12:1)
Aaon black
9.07:1passpasspassPasses 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 #3ab5f2 as the background.

Brands using this color

Fonts for this mood

#3ab5f2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3ab5f2
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 #3ab5f2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3ab5f2-9cb2c4-df4e64-1f232d-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