Color

#031da0

#031da0
hex#031da0
rgbrgb(3, 29, 160)
hslhsl(230, 96%, 32%)
oklchoklch(0.344 0.204 264.6)
Closest name: Dark Galaxy (#0018a8)Relative luminance 0.0344

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a08603

#036ca0 · #3703a0

#a0031d · #1da003

Split-complementary

Open in tool →

#a03703 · #6ca003

#a0036c · #a08603 · #03a037

Contrast

#031da0 as textRatioAAAA largeAAAFix
Aaon white
12.45:1passpasspassPasses AAA — no fix needed.
Aaon black
1.69:1failfailfail
  • AA: use #4b68fb as the text (4.67:1)
  • AAA: use #788efc as the text (7.07:1)
  • AA: or shift the background to #9c9c9c (4.53:1)
  • AAA: or shift the background to #c4c4c4 (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 #031da0 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

#031da0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #031da0
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 #031da0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/031da0-9c9ec4-df814e-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