Color

#151f33

#151f33
hex#151f33
rgbrgb(21, 31, 51)
hslhsl(220, 42%, 14%)
oklchoklch(0.241 0.041 263.4)
Closest name: Nightwalker (#161d3b)Relative luminance 0.0138

Tints & shades

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

Harmonies

Complementary

Open in tool →

#332915

#152e33 · #1a1533

#33151f · #1f3315

Split-complementary

Open in tool →

#331a15 · #2e3315

#33152e · #332915 · #15331a

Contrast

#151f33 as textRatioAAAA largeAAAFix
Aaon white
16.46:1passpasspassPasses AAA — no fix needed.
Aaon black
1.28:1failfailfail
  • AA: use #5576b9 as the text (4.68:1)
  • AAA: use #7d96ca as the text (7.09:1)
  • AA: or shift the background to #878787 (4.58:1)
  • AAA: or shift the background to #ababab (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #151f33 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#151f33 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151f33
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 #151f33 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151f33-9ca5c4-df694e-211f2d-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