Color

#30338d

#30338d
hex#30338d
rgbrgb(48, 51, 141)
hslhsl(238, 49%, 37%)
oklchoklch(0.378 0.146 275.4)
Closest name: Bluebell (#333399)Relative luminance 0.0492

Colors that go with #30338d

Charcoal, Steel Blue and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8d8930

#30618d · #5b308d

#8d3033 · #338d30

Split-complementary

Open in tool →

#8d5b30 · #618d30

#8d3061 · #8d8930 · #308d5b

Contrast

#30338d as textRatioAAAA largeAAAFix
Aaon white
10.59:1passpasspassPasses AAA — no fix needed.
Aaon black
1.98:1failfailfail
  • AA: use #676acb as the text (4.5:1)
  • AAA: use #8d90d8 as the text (7.11:1)
  • AA: or shift the background to #ababab (4.61:1)
  • AAA: or shift the background to #d4d4d4 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #30338d 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

#30338d reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #30338d
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #30338d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/30338d-9f9cc4-df944e-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