Color

#15231a

#15231a
hex#15231a
rgbrgb(21, 35, 26)
hslhsl(141, 25%, 11%)
oklchoklch(0.24 0.026 155.7)
Closest name: Underworld (#1e231c)Relative luminance 0.0144

Tints & shades

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

Harmonies

Complementary

Open in tool →

#23151e

#172315 · #152321

#1a1523 · #231a15

Split-complementary

Open in tool →

#211523 · #231517

#151723 · #23151e · #232115

Contrast

#15231a as textRatioAAAA largeAAAFix
Aaon white
16.31:1passpasspassPasses AAA — no fix needed.
Aaon black
1.29:1failfailfail
  • AA: use #4d805e as the text (4.56:1)
  • AAA: use #66a37b as the text (7.09:1)
  • AA: or shift the background to #878787 (4.54:1)
  • AAA: or shift the background to #ababab (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #15231a 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

#15231a reads as muted, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #15231a
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 #15231a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/15231a-a2beaf-c459d4-1f2d2a-eaf1e9?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