Color

#2f3db6

#2f3db6
hex#2f3db6
rgbrgb(47, 61, 182)
hslhsl(234, 59%, 45%)
oklchoklch(0.433 0.189 270.8)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0732

Colors that go with #2f3db6

Charcoal, Sea Green and Steel Blue 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.

Real palettes that use #2f3db6

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b6a92f

#2f80b6 · #652fb6

#b62f3d · #3db62f

Split-complementary

Open in tool →

#b6652f · #80b62f

#b62f80 · #b6a92f · #2fb665

Contrast

#2f3db6 as textRatioAAAA largeAAAFix
Aaon white
8.52:1passpasspassPasses AAA — no fix needed.
Aaon black
2.46:1failfailfail
  • AA: use #616dd6 as the text (4.67:1)
  • AAA: use #8992e1 as the text (7.26:1)
  • AA: or shift the background to #bdbdbd (4.54:1)
  • AAA: or shift the background to #ebebeb (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2f3db6 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

#2f3db6 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f3db6
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 #2f3db6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f3db6-9d9cc4-df8a4e-241f2d-e9eef1?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