Color

#312dae

#312dae
hex#312dae
rgbrgb(49, 45, 174)
hslhsl(242, 59%, 43%)
oklchoklch(0.401 0.196 274.4)
Closest name: Depths of Night (#2c319b)Relative luminance 0.0559

Tints & shades

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

Harmonies

Complementary

Open in tool →

#aaae2d

#2d69ae · #722dae

#ae312d · #2dae31

Split-complementary

Open in tool →

#ae722d · #69ae2d

#ae2d69 · #aaae2d · #2dae72

Contrast

#312dae as textRatioAAAA largeAAAFix
Aaon white
9.92:1passpasspassPasses AAA — no fix needed.
Aaon black
2.12:1failfailfail
  • AA: use #6d69d8 as the text (4.66:1)
  • AAA: use #908de2 as the text (7.09:1)
  • AA: or shift the background to #b0b0b0 (4.57:1)
  • AAA: or shift the background to #d9d9d9 (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 #312dae 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

#312dae reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #312dae
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 #312dae and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/312dae-a29cc4-df9e4e-261f2d-e9edf1?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