Color

#00213d

#00213d
hex#00213d
rgbrgb(0, 33, 61)
hslhsl(208, 100%, 12%)
oklchoklch(0.242 0.066 248.2)
Closest name: Midnight Mirage (#001f3f)Relative luminance 0.0142

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3d1d00

#003d3b · #00023d

#3d0021 · #213d00

Split-complementary

Open in tool →

#3d0002 · #3d3b00

#3b003d · #3d1d00 · #023d00

Contrast

#00213d as textRatioAAAA largeAAAFix
Aaon white
16.34:1passpasspassPasses AAA — no fix needed.
Aaon black
1.28:1failfailfail
  • AA: use #0075db as the text (4.57:1)
  • AAA: use #2499ff as the text (7.08:1)
  • AA: or shift the background to #878787 (4.55:1)
  • AAA: or shift the background to #ababab (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #00213d 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

#00213d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #00213d
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 #00213d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/00213d-9cadc4-df4e51-1f212d-e9f1f1?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