Color

#00237a

#00237a
hex#00237a
rgbrgb(0, 35, 122)
hslhsl(223, 100%, 24%)
oklchoklch(0.307 0.152 262.8)
Closest name: Below the Surface (#0a2f7c)Relative luminance 0.0261

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7a5800

#00607a · #1b007a

#7a0023 · #237a00

Split-complementary

Open in tool →

#7a1b00 · #607a00

#7a0060 · #7a5800 · #007a1b

Contrast

#00237a as textRatioAAAA largeAAAFix
Aaon white
13.8:1passpasspassPasses AAA — no fix needed.
Aaon black
1.52:1failfailfail
  • AA: use #2e69ff as the text (4.58:1)
  • AAA: use #6691ff as the text (7.06:1)
  • AA: or shift the background to #949494 (4.55:1)
  • AAA: or shift the background to #bababa (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #00237a 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

#00237a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #00237a
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 #00237a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/00237a-9ca3c4-df704e-211f2d-e9eff1?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