Color

#3eb4e0

#3eb4e0
hex#3eb4e0
rgbrgb(62, 180, 224)
hslhsl(196, 72%, 56%)
oklchoklch(0.723 0.12 227.2)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.3905

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e0693e

#3ee0ba · #3e64e0

#e03eb4 · #b4e03e

Split-complementary

Open in tool →

#e03e64 · #e0ba3e

#ba3ee0 · #e0693e · #64e03e

Contrast

#3eb4e0 as textRatioAAAA largeAAAFix
Aaon white
2.38:1failfailfail
  • AA: use #1a7ea2 as the text (4.62:1)
  • AAA: use #145f7b as the text (7.11:1)
  • AA: or shift the background to #3d3d3d (4.56:1)
  • AAA: or shift the background to #1c1c1c (7.15:1)
Aaon black
8.81:1passpasspassPasses 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 #3eb4e0 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

#3eb4e0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3eb4e0
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 #3eb4e0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3eb4e0-9cb5c4-df4e6e-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