Color

#312c4e

#312c4e
hex#312c4e
rgbrgb(49, 44, 78)
hslhsl(249, 28%, 24%)
oklchoklch(0.315 0.06 289.2)
Closest name: Deep Sea Base (#2c2c57)Relative luminance 0.03

Tints & shades

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

Harmonies

Complementary

Open in tool →

#494e2c

#2c384e · #422c4e

#4e312c · #2c4e31

Split-complementary

Open in tool →

#4e422c · #384e2c

#4e2c38 · #494e2c · #2c4e42

Contrast

#312c4e as textRatioAAAA largeAAAFix
Aaon white
13.12:1passpasspassPasses AAA — no fix needed.
Aaon black
1.6:1failfailfail
  • AA: use #766cac as the text (4.51:1)
  • AAA: use #9790c1 as the text (7.08:1)
  • AA: or shift the background to #999999 (4.6:1)
  • AAA: or shift the background to #bfbfbf (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #312c4e 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

#312c4e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #312c4e
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #312c4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/312c4e-a79cc4-dfae4e-271f2d-e9ecf1?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