Color

#2f305b

#2f305b
hex#2f305b
rgbrgb(47, 48, 91)
hslhsl(239, 32%, 27%)
oklchoklch(0.331 0.075 280.5)
Closest name: Deep Sea Base (#2c2c57)Relative luminance 0.0347

Colors that go with #2f305b

Dark Olive Green, Steel Blue and Teal 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 →

#5b5a2f

#2f465b · #442f5b

#5b2f30 · #305b2f

Split-complementary

Open in tool →

#5b442f · #465b2f

#5b2f46 · #5b5a2f · #2f5b44

Contrast

#2f305b as textRatioAAAA largeAAAFix
Aaon white
12.39:1passpasspassPasses AAA — no fix needed.
Aaon black
1.69:1failfailfail
  • AA: use #6e6fb4 as the text (4.6:1)
  • AAA: use #9091c6 as the text (7.05:1)
  • AA: or shift the background to #9c9c9c (4.51:1)
  • AAA: or shift the background to #c4c4c4 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2f305b 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

#2f305b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f305b
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 #2f305b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f305b-a09cc4-df964e-251f2d-e9edf1?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