Color

#398bea

#398bea
hex#398bea
rgbrgb(57, 139, 234)
hslhsl(212, 81%, 57%)
oklchoklch(0.634 0.163 254.4)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2528

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ea9739

#39e4ea · #3e39ea

#ea398b · #8bea39

Split-complementary

Open in tool →

#ea3e39 · #e4ea39

#ea39e4 · #ea9739 · #39ea3e

Contrast

#398bea as textRatioAAAA largeAAAFix
Aaon white
3.47:1failpassfail
  • AA: use #1774de as the text (4.58:1)
  • AAA: use #1157a6 as the text (7.15:1)
  • AA: or shift the background to #212121 (4.64:1)
Aaon black
6.06:1passpassfail
  • AAA: use #5099ed as the text (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #398bea 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

#398bea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #398bea
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 #398bea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/398bea-9caac4-df564e-1f202d-e9f1f1?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