Color

#2b335e

#2b335e
hex#2b335e
rgbrgb(43, 51, 94)
hslhsl(231, 37%, 27%)
oklchoklch(0.337 0.076 273.7)
Closest name: Deep Sea Base (#2c2c57)Relative luminance 0.0369

Colors that go with #2b335e

Dark Olive Green, Sea Green and Steel 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 →

#5e572b

#2b4c5e · #3d2b5e

#5e2b33 · #335e2b

Split-complementary

Open in tool →

#5e3d2b · #4c5e2b

#5e2b4c · #5e572b · #2b5e3d

Contrast

#2b335e as textRatioAAAA largeAAAFix
Aaon white
12.08:1passpasspassPasses AAA — no fix needed.
Aaon black
1.74:1failfailfail
  • AA: use #6572b8 as the text (4.65:1)
  • AAA: use #8c95ca as the text (7.27:1)
  • AA: or shift the background to #9e9e9e (4.51:1)
  • AAA: or shift the background to #c7c7c7 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b335e as the background.

Brands using this color

Fonts for this mood

#2b335e reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b335e
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 #2b335e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b335e-9c9ec4-df834e-231f2d-e9eef1?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