Color

#280231

#280231
hex#280231
rgbrgb(40, 2, 49)
hslhsl(289, 92%, 10%)
oklchoklch(0.205 0.093 319.1)
Closest name: Coal Mine (#220033)Relative luminance 0.0072

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0b3102

#110231 · #310222

#312802 · #023128

Split-complementary

Open in tool →

#223102 · #023111

#311102 · #0b3102 · #022231

Contrast

#280231 as textRatioAAAA largeAAAFix
Aaon white
18.37:1passpasspassPasses AAA — no fix needed.
Aaon black
1.14:1failfailfail
  • AA: use #c20aeb as the text (4.54:1)
  • AAA: use #dd62f8 as the text (7.18:1)
  • AA: or shift the background to #808080 (4.65:1)
  • AAA: or shift the background to #a1a1a1 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #280231 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

#280231 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #280231
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 #280231 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/280231-be9fc1-a8cb62-2d1f2a-ece9f1?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