Color

#3ac3fd

#3ac3fd
hex#3ac3fd
rgbrgb(58, 195, 253)
hslhsl(198, 98%, 61%)
oklchoklch(0.77 0.14 231.4)
Closest name: deepskyblue (#00bfff)Relative luminance 0.4702

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fd753a

#3afdd6 · #3a61fd

#fd3ac3 · #c3fd3a

Split-complementary

Open in tool →

#fd3a61 · #fdd63a

#d63afd · #fd753a · #61fd3a

Contrast

#3ac3fd as textRatioAAAA largeAAAFix
Aaon white
2.02:1failfailfail
  • AA: use #027cb1 as the text (4.65:1)
  • AAA: use #015c83 as the text (7.34:1)
  • AA: or shift the background to #474747 (4.6:1)
  • AAA: or shift the background to #2b2b2b (7.02:1)
Aaon black
10.4:1passpasspassPasses 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 #3ac3fd as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#3ac3fd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3ac3fd
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 #3ac3fd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3ac3fd-9cb3c4-df4e69-1f232d-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