Color

#3fbde4

#3fbde4
hex#3fbde4
rgbrgb(63, 189, 228)
hslhsl(194, 75%, 57%)
oklchoklch(0.746 0.121 222.9)
Closest name: Blue Bikini (#00bbee)Relative luminance 0.4305

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e4653f

#3fe4b8 · #3f6be4

#e43fbd · #bde43f

Split-complementary

Open in tool →

#e43f6b · #e4b83f

#b83fe4 · #e4653f · #6be43f

Contrast

#3fbde4 as textRatioAAAA largeAAAFix
Aaon white
2.19:1failfailfail
  • AA: use #167d9c as the text (4.72:1)
  • AAA: use #116078 as the text (7.08:1)
  • AA: or shift the background to #424242 (4.6:1)
  • AAA: or shift the background to #242424 (7.1:1)
Aaon black
9.61:1passpasspassPasses 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 #3fbde4 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

#3fbde4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3fbde4
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 #3fbde4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fbde4-9cb6c4-df4e72-1f242d-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