Color

#3ff5f8

#3ff5f8
hex#3ff5f8
rgbrgb(63, 245, 248)
hslhsl(181, 93%, 61%)
oklchoklch(0.885 0.139 196.6)
Closest name: Aggressive Aqua (#00fbff)Relative luminance 0.7314

Colors that go with #3ff5f8

Charcoal, Deep Sky Blue and Taupe 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 →

#f8423f

#3ff89f · #3f98f8

#f83ff5 · #f5f83f

Split-complementary

Open in tool →

#f83f98 · #f89f3f

#9f3ff8 · #f8423f · #98f83f

Contrast

#3ff5f8 as textRatioAAAA largeAAAFix
Aaon white
1.34:1failfailfail
  • AA: use #058385 as the text (4.57:1)
  • AAA: use #046162 as the text (7.26:1)
  • AA: or shift the background to #616161 (4.61:1)
  • AAA: or shift the background to #454545 (7.14:1)
Aaon black
15.63:1passpasspassPasses 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 #3ff5f8 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

#3ff5f8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3ff5f8
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 #3ff5f8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3ff5f8-a2babe-d45992-1f272d-e9f1ed?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