Color

#271d72

#271d72
hex#271d72
rgbrgb(39, 29, 114)
hslhsl(247, 59%, 28%)
oklchoklch(0.307 0.138 279.8)
Closest name: midnightblue (#191970)Relative luminance 0.0252

Tints & shades

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

Harmonies

Complementary

Open in tool →

#68721d

#1d3e72 · #511d72

#72271d · #1d7227

Split-complementary

Open in tool →

#72511d · #3e721d

#721d3e · #68721d · #1d7251

Contrast

#271d72 as textRatioAAAA largeAAAFix
Aaon white
13.95:1passpasspassPasses AAA — no fix needed.
Aaon black
1.5:1failfailfail
  • AA: use #7265d7 as the text (4.56:1)
  • AAA: use #978de2 as the text (7.22:1)
  • AA: or shift the background to #949494 (4.6:1)
  • AAA: or shift the background to #b8b8b8 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #271d72 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

#271d72 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #271d72
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 #271d72 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/271d72-a59cc4-dfaa4e-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