Color

#230731

#230731
hex#230731
rgbrgb(35, 7, 49)
hslhsl(280, 75%, 11%)
oklchoklch(0.204 0.081 311.9)
Closest name: Coal Mine (#220033)Relative luminance 0.0073

Tints & shades

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

Harmonies

Complementary

Open in tool →

#153107

#0e0731 · #31072a

#312307 · #073123

Split-complementary

Open in tool →

#2a3107 · #07310e

#310e07 · #153107 · #072a31

Contrast

#230731 as textRatioAAAA largeAAAFix
Aaon white
18.32:1passpasspassPasses AAA — no fix needed.
Aaon black
1.15:1failfailfail
  • AA: use #ad3fe4 as the text (4.61:1)
  • AAA: use #c475eb as the text (7.09:1)
  • AA: or shift the background to #808080 (4.64:1)
  • AAA: or shift the background to #a1a1a1 (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 #230731 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

#230731 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #230731
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 #230731 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/230731-b99fc1-b8cb62-2d1f2c-ebe9f1?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