Color

#2a309d

#2a309d
hex#2a309d
rgbrgb(42, 48, 157)
hslhsl(237, 58%, 39%)
oklchoklch(0.384 0.173 272.5)
Closest name: Depths of Night (#2c319b)Relative luminance 0.0504

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9d972a

#2a699d · #5e2a9d

#9d2a30 · #309d2a

Split-complementary

Open in tool →

#9d5e2a · #699d2a

#9d2a69 · #9d972a · #2a9d5e

Contrast

#2a309d as textRatioAAAA largeAAAFix
Aaon white
10.46:1passpasspassPasses AAA — no fix needed.
Aaon black
2.01:1failfailfail
  • AA: use #666cd6 as the text (4.68:1)
  • AAA: use #8a8ee0 as the text (7.03:1)
  • AA: or shift the background to #ababab (4.55:1)
  • AAA: or shift the background to #d4d4d4 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2a309d 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

#2a309d reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2a309d
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 #2a309d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2a309d-9f9cc4-df924e-251f2d-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