Color

#2125ab

#2125ab
hex#2125ab
rgbrgb(33, 37, 171)
hslhsl(238, 68%, 40%)
oklchoklch(0.378 0.204 270.1)
Closest name: Blue Hour (#0034ab)Relative luminance 0.0459

Colors that go with #2125ab

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 →

#aba721

#216bab · #6121ab

#ab2125 · #25ab21

Split-complementary

Open in tool →

#ab6121 · #6bab21

#ab216b · #aba721 · #21ab61

Contrast

#2125ab as textRatioAAAA largeAAAFix
Aaon white
10.95:1passpasspassPasses AAA — no fix needed.
Aaon black
1.92:1failfailfail
  • AA: use #6569e2 as the text (4.67:1)
  • AAA: use #8b8ee9 as the text (7.14:1)
  • AA: or shift the background to #a8a8a8 (4.61:1)
  • AAA: or shift the background to #cfcfcf (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 #2125ab 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

#2125ab reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2125ab
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 #2125ab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2125ab-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