Color

#00313d

#00313d
hex#00313d
rgbrgb(0, 49, 61)
hslhsl(192, 100%, 12%)
oklchoklch(0.29 0.053 219.5)
Closest name: Nordic Noir (#003344)Relative luminance 0.0253

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3d0c00

#003d2b · #00123d

#3d0031 · #313d00

Split-complementary

Open in tool →

#3d0012 · #3d2b00

#2b003d · #3d0c00 · #123d00

Contrast

#00313d as textRatioAAAA largeAAAFix
Aaon white
13.94:1passpasspassPasses AAA — no fix needed.
Aaon black
1.51:1failfailfail
  • AA: use #0083a3 as the text (4.78:1)
  • AAA: use #00a3cc as the text (7.11:1)
  • AA: or shift the background to #949494 (4.59:1)
  • AAA: or shift the background to #b8b8b8 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #00313d 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

#00313d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #00313d
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 #00313d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/00313d-a2b5be-df4e77-1f242d-e9f1ef?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