Color

#310665

#310665
hex#310665
rgbrgb(49, 6, 101)
hslhsl(267, 89%, 21%)
oklchoklch(0.277 0.144 294.9)
Closest name: Cotinga Purple (#340059)Relative luminance 0.0172

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3a6506

#060b65 · #600665

#653106 · #066531

Split-complementary

Open in tool →

#656006 · #0b6506

#65060b · #3a6506 · #066560

Contrast

#310665 as textRatioAAAA largeAAAFix
Aaon white
15.62:1passpasspassPasses AAA — no fix needed.
Aaon black
1.34:1failfailfail
  • AA: use #9548f4 as the text (4.51:1)
  • AAA: use #b47df7 as the text (7.22:1)
  • AA: or shift the background to #8a8a8a (4.52:1)
  • AAA: or shift the background to #b0b0b0 (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #310665 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

#310665 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #310665
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 #310665 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/310665-b39cc4-dfda4e-2c1f2d-e9eaf1?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