Color

#151037

#151037
hex#151037
rgbrgb(21, 16, 55)
hslhsl(248, 55%, 14%)
oklchoklch(0.207 0.073 283.8)
Closest name: Midnight Monarch (#1c0f33)Relative luminance 0.0081

Tints & shades

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

Harmonies

Complementary

Open in tool →

#323710

#101e37 · #291037

#371510 · #103715

Split-complementary

Open in tool →

#372910 · #1e3710

#37101e · #323710 · #103729

Contrast

#151037 as textRatioAAAA largeAAAFix
Aaon white
18.09:1passpasspassPasses AAA — no fix needed.
Aaon black
1.16:1failfailfail
  • AA: use #7365d2 as the text (4.52:1)
  • AAA: use #978cde as the text (7.12:1)
  • AA: or shift the background to #808080 (4.58:1)
  • AAA: or shift the background to #a3a3a3 (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 #151037 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

#151037 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151037
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 #151037 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151037-a69cc4-dfac4e-271f2d-e9ecf1?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