Color

#31527c

#31527c
hex#31527c
rgbrgb(49, 82, 124)
hslhsl(214, 43%, 34%)
oklchoklch(0.434 0.08 255.1)
Closest name: Assassin (#2d4f83)Relative luminance 0.0814

Colors that go with #31527c

Sea Green, Blue and Cadet 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7c5c31

#31777c · #36317c

#7c3152 · #527c31

Split-complementary

Open in tool →

#7c3631 · #777c31

#7c3177 · #7c5c31 · #317c36

Contrast

#31527c as textRatioAAAA largeAAAFix
Aaon white
7.99:1passpasspassPasses AAA — no fix needed.
Aaon black
2.63:1failfailfail
  • AA: use #4776b3 as the text (4.51:1)
  • AAA: use #7499c8 as the text (7.13:1)
  • AA: or shift the background to #c4c4c4 (4.58:1)
  • AAA: or shift the background to #f0f0f0 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #31527c 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

#31527c reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #31527c
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 #31527c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/31527c-9ca9c4-df5a4e-1f1f2d-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