Color

#151c33

#151c33
hex#151c33
rgbrgb(21, 28, 51)
hslhsl(226, 42%, 14%)
oklchoklch(0.232 0.046 269.8)
Closest name: Dark Knight (#151931)Relative luminance 0.0123

Tints & shades

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

Harmonies

Complementary

Open in tool →

#332c15

#152b33 · #1d1533

#33151c · #1c3315

Split-complementary

Open in tool →

#331d15 · #2b3315

#33152b · #332c15 · #15331d

Contrast

#151c33 as textRatioAAAA largeAAAFix
Aaon white
16.86:1passpasspassPasses AAA — no fix needed.
Aaon black
1.25:1failfailfail
  • AA: use #5c73bc as the text (4.63:1)
  • AAA: use #8495cd as the text (7.16:1)
  • AA: or shift the background to #858585 (4.57:1)
  • AAA: or shift the background to #a8a8a8 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #151c33 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

#151c33 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151c33
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 #151c33 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151c33-9ca1c4-df774e-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