Color

#31d803

#31d803
hex#31d803
rgbrgb(49, 216, 3)
hslhsl(107, 97%, 43%)
oklchoklch(0.769 0.253 141.2)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.4977

Tints & shades

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

Harmonies

Complementary

Open in tool →

#aa03d8

#9cd803 · #03d840

#0331d8 · #d80331

Split-complementary

Open in tool →

#4003d8 · #d8039c

#039cd8 · #aa03d8 · #d84003

Contrast

#31d803 as textRatioAAAA largeAAAFix
Aaon white
1.92:1failfailfail
  • AA: use #1f8802 as the text (4.58:1)
  • AAA: use #176402 as the text (7.34:1)
  • AA: or shift the background to #4a4a4a (4.62:1)
  • AAA: or shift the background to #2e2e2e (7.08:1)
Aaon black
10.95:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #31d803 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #31d803
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 #31d803 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/31d803-a5bea2-7a4edf-1f2d22-eff1e9?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