Color

#042ea9

#042ea9
hex#042ea9
rgbrgb(4, 46, 169)
hslhsl(225, 95%, 34%)
oklchoklch(0.38 0.198 263.9)
Closest name: Blue Hour (#0034ab)Relative luminance 0.0484

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a98004

#0480a9 · #2e04a9

#a9042e · #2ea904

Split-complementary

Open in tool →

#a92e04 · #80a904

#a90480 · #a98004 · #04a92e

Contrast

#042ea9 as textRatioAAAA largeAAAFix
Aaon white
10.67:1passpasspassPasses AAA — no fix needed.
Aaon black
1.97:1failfailfail
  • AA: use #3869fa as the text (4.57:1)
  • AAA: use #6f92fb as the text (7.18:1)
  • AA: or shift the background to #ababab (4.64:1)
  • AAA: or shift the background to #d4d4d4 (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #042ea9 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

#042ea9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #042ea9
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 #042ea9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/042ea9-9ca1c4-df754e-221f2d-e9eff1?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