Color

#30173b

#30173b
hex#30173b
rgbrgb(48, 23, 59)
hslhsl(282, 44%, 16%)
oklchoklch(0.258 0.071 314.5)
Closest name: Nightly Voyager (#391531)Relative luminance 0.0156

Tints & shades

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

Harmonies

Complementary

Open in tool →

#223b17

#1e173b · #3b1734

#3b3017 · #173b30

Split-complementary

Open in tool →

#343b17 · #173b1e

#3b1e17 · #223b17 · #17343b

Contrast

#30173b as textRatioAAAA largeAAAFix
Aaon white
16.01:1passpasspassPasses AAA — no fix needed.
Aaon black
1.31:1failfailfail
  • AA: use #9e56bd as the text (4.52:1)
  • AAA: use #b882ce as the text (7.12:1)
  • AA: or shift the background to #8a8a8a (4.64:1)
  • AAA: or shift the background to #adadad (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #30173b 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

#30173b reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #30173b
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 #30173b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/30173b-ba9fc1-b4cb62-2d1f2b-ebe9f1?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