Color

#151d42

#151d42
hex#151d42
rgbrgb(21, 29, 66)
hslhsl(229, 52%, 17%)
oklchoklch(0.247 0.071 271.2)
Closest name: Nightwalker (#161d3b)Relative luminance 0.0143

Tints & shades

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

Harmonies

Complementary

Open in tool →

#423a15

#153442 · #231542

#42151d · #1d4215

Split-complementary

Open in tool →

#422315 · #344215

#421534 · #423a15 · #154223

Contrast

#151d42 as textRatioAAAA largeAAAFix
Aaon white
16.33:1passpasspassPasses AAA — no fix needed.
Aaon black
1.29:1failfailfail
  • AA: use #5c71cc as the text (4.69:1)
  • AAA: use #8393d8 as the text (7.13:1)
  • AA: or shift the background to #878787 (4.54:1)
  • AAA: or shift the background to #ababab (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 #151d42 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

#151d42 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151d42
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 #151d42 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151d42-9c9fc4-df7e4e-231f2d-e9eef1?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