Color

#00173d

#00173d
hex#00173d
rgbrgb(0, 23, 61)
hslhsl(217, 100%, 12%)
oklchoklch(0.215 0.08 258.1)
Closest name: Infinite Night (#071037)Relative luminance 0.0095

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3d2600

#00363d · #07003d

#3d0017 · #173d00

Split-complementary

Open in tool →

#3d0700 · #363d00

#3d0036 · #3d2600 · #003d07

Contrast

#00173d as textRatioAAAA largeAAAFix
Aaon white
17.65:1passpasspassPasses AAA — no fix needed.
Aaon black
1.19:1failfailfail
  • AA: use #0f6bff as the text (4.57:1)
  • AAA: use #5294ff as the text (7.04:1)
  • AA: or shift the background to #828282 (4.59:1)
  • AAA: or shift the background to #a6a6a6 (7.25:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #00173d 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

#00173d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #00173d
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 #00173d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/00173d-9ca7c4-df624e-201f2d-e9f0f1?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