Color

#3fa0d5

#3fa0d5
hex#3fa0d5
rgbrgb(63, 160, 213)
hslhsl(201, 64%, 54%)
oklchoklch(0.672 0.119 236.5)
Closest name: Blue Burst (#309cd0)Relative luminance 0.31

Colors that go with #3fa0d5

Charcoal, Tomato and Bronze 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 →

#d5733f

#3fd5be · #3f55d5

#d53fa0 · #a0d53f

Split-complementary

Open in tool →

#d53f55 · #d5be3f

#be3fd5 · #d5733f · #55d53f

Contrast

#3fa0d5 as textRatioAAAA largeAAAFix
Aaon white
2.92:1failfailfail
  • AA: use #267dab as the text (4.56:1)
  • AAA: use #1c5e82 as the text (7.06:1)
  • AA: or shift the background to #303030 (4.53:1)
  • AAA: or shift the background to #030303 (7.07:1)
Aaon black
7.2:1passpasspassPasses 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 #3fa0d5 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

#3fa0d5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3fa0d5
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 #3fa0d5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fa0d5-9cb1c4-df4e62-1f222d-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