Color

#151e37

#151e37
hex#151e37
rgbrgb(21, 30, 55)
hslhsl(224, 45%, 15%)
oklchoklch(0.241 0.05 267.6)
Closest name: Nightwalker (#161d3b)Relative luminance 0.0136

Tints & shades

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

Harmonies

Complementary

Open in tool →

#372e15

#152f37 · #1d1537

#37151e · #1e3715

Split-complementary

Open in tool →

#371d15 · #2f3715

#37152f · #372e15 · #15371d

Contrast

#151e37 as textRatioAAAA largeAAAFix
Aaon white
16.5:1passpasspassPasses AAA — no fix needed.
Aaon black
1.27:1failfailfail
  • AA: use #5974c0 as the text (4.68:1)
  • AAA: use #8196cf as the text (7.2:1)
  • AA: or shift the background to #878787 (4.59:1)
  • AAA: or shift the background to #ababab (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #151e37 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#151e37 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151e37
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 #151e37 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151e37-9ca2c4-df724e-221f2d-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