Color

#3ab4e4

#3ab4e4
hex#3ab4e4
rgbrgb(58, 180, 228)
hslhsl(197, 76%, 56%)
oklchoklch(0.724 0.125 229)
Closest name: Blue Bikini (#00bbee)Relative luminance 0.3914

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e46a3a

#3ae4bf · #3a5ee4

#e43ab4 · #b4e43a

Split-complementary

Open in tool →

#e43a5e · #e4bf3a

#bf3ae4 · #e46a3a · #5ee43a

Contrast

#3ab4e4 as textRatioAAAA largeAAAFix
Aaon white
2.38:1failfailfail
  • AA: use #177da6 as the text (4.65:1)
  • AAA: use #115f7e as the text (7.09:1)
  • AA: or shift the background to #3d3d3d (4.57:1)
  • AAA: or shift the background to #1c1c1c (7.16:1)
Aaon black
8.83:1passpasspassPasses 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 #3ab4e4 as the background.

Brands using this color

Fonts for this mood

#3ab4e4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3ab4e4
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3ab4e4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3ab4e4-9cb4c4-df4e6b-1f232d-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