Color

#2100a3

#2100a3
hex#2100a3
rgbrgb(33, 0, 163)
hslhsl(252, 100%, 32%)
oklchoklch(0.336 0.216 272.2)
Closest name: Dramatic Blue (#240093)Relative luminance 0.0297

Tints & shades

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

Harmonies

Complementary

Open in tool →

#83a300

#0031a3 · #7200a3

#a32100 · #00a321

Split-complementary

Open in tool →

#a37200 · #31a300

#a30031 · #83a300 · #00a372

Contrast

#2100a3 as textRatioAAAA largeAAAFix
Aaon white
13.18:1passpasspassPasses AAA — no fix needed.
Aaon black
1.59:1failfailfail
  • AA: use #7857ff as the text (4.61:1)
  • AAA: use #9d85ff as the text (7.23:1)
  • AA: or shift the background to #999999 (4.63:1)
  • AAA: or shift the background to #bdbdbd (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2100a3 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

#2100a3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2100a3
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 #2100a3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2100a3-a99cc4-dfb64e-281f2d-e9ecf1?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