Color

#031d2b

#031d2b
hex#031d2b
rgbrgb(3, 29, 43)
hslhsl(201, 87%, 9%)
oklchoklch(0.219 0.042 235.6)
Closest name: Midnight Dreams (#002233)Relative luminance 0.0107

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2b1103

#032b25 · #03092b

#2b031d · #1d2b03

Split-complementary

Open in tool →

#2b0309 · #2b2503

#25032b · #2b1103 · #092b03

Contrast

#031d2b as textRatioAAAA largeAAAFix
Aaon white
17.29:1passpasspassPasses AAA — no fix needed.
Aaon black
1.21:1failfailfail
  • AA: use #0d7dba as the text (4.66:1)
  • AAA: use #109eea as the text (7.1:1)
  • AA: or shift the background to #858585 (4.69:1)
  • AAA: or shift the background to #a6a6a6 (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 #031d2b as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#031d2b reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #031d2b
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 #031d2b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/031d2b-9cb1c4-df4e62-1f222d-e9f1f0?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