Color

#304564

#304564
hex#304564
rgbrgb(48, 69, 100)
hslhsl(216, 35%, 29%)
oklchoklch(0.387 0.059 258)
Closest name: Black Turmeric (#2c4364)Relative luminance 0.058

Colors that go with #304564

Teal, Blue and Blush Pink 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 →

#644f30

#305f64 · #353064

#643045 · #456430

Split-complementary

Open in tool →

#643530 · #5f6430

#64305f · #644f30 · #306435

Contrast

#304564 as textRatioAAAA largeAAAFix
Aaon white
9.72:1passpasspassPasses AAA — no fix needed.
Aaon black
2.16:1failfailfail
  • AA: use #5377ac as the text (4.6:1)
  • AAA: use #7c97c0 as the text (7.04:1)
  • AA: or shift the background to #b3b3b3 (4.63:1)
  • AAA: or shift the background to #dbdbdb (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #304564 as the background.

Brands using this color

Fonts for this mood

#304564 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #304564
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 #304564 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/304564-9ca7c4-df5f4e-201f2d-e9f0f1?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