Named color

Cosmic Green

#30a877

hex#30a877

rgbrgb(48, 168, 119)

hslhsl(156, 56%, 42%)

oklchoklch(0.654 0.128 161.5)

Relative luminance 0.2997

Cosmic Green on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the curated palettes it appears in and any public brand that adopts it.

Tints & shades

Tints — toward white

36bf88 44ca95 5cd1a2 70d7ad 88ddbb a0e4c9 b3ead4 cbf0e2 dff6ed f7fdfa

Shades — toward black

2b976c 268760 237b58 1e6b4d 1a5b41 154c36 113c2b 0d3022 092017 04100b

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

Harmonies

Complementary

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30a877 a72f5f

#a72f5f

Analogous

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30a877 2fa73b 2f9ba7

#2fa73b · #2f9ba7

Triadic

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30a877 772fa7 a7772f

#772fa7 · #a7772f

Split-complementary

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30a877 a72f9b a73b2f

#a72f9b · #a73b2f

Tetradic

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30a877 3b2fa7 a72f5f 9ba72f

#3b2fa7 · #a72f5f · #9ba72f

Contrast

Cosmic Green as text	Ratio	AA	AA large	AAA	Fix
Aaon white	3:1	fail	pass	fail	AA: use #25835e as the text (4.68:1) AAA: use #1c6347 as the text (7.18:1) AA: or shift the background to #2e2e2e (4.52:1)
Aaon black	6.99:1	pass	pass	fail	AAA: use #30ab7a as the text (7.23:1)

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

Brands using this color

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

Palettes built around it

0b3d91 4b6a9b 00a878 ffffff 0b1f3a

Fintech Trust

Open in tool →

Navy signals custody and stability; the green accent is money moving the right way. No red anywhere except errors.

Cool Clean ModernFintech

mcpConnect your agent — build around Cosmic Green

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 #30a877 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/30a877-a2beb6-d459c6-1f2d2d-e9f1ea?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