Color
#21ca8f
#21ca8frgb(33, 202, 143)hsl(159, 72%, 46%)oklch(0.745 0.155 162.7)Colors that go with #21ca8f
Charcoal, Hot Pink and Mustard Yellow lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #21ca8f: softer than #000 and cool enough to feel like part of the same palette.
Hot Pink #ff69b4
complementaryshippedHot Pink sits directly opposite #21ca8f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Mustard Yellow #ffdb58
shippedMustard Yellow is paired with #21ca8f in 4 real palettes, including Fresh Juice and Meadow, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #21ca8f in 12 real palettes, including WhatsApp's brand system and Obsidian's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Light Coral #f08080
split-complementshippedLight Coral is a split-complement of #21ca8f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Cornflower Blue #6495ed
triadicshippedCornflower Blue completes a triad with #21ca8f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Dark Olive Green #556b2f
shippedDark Olive Green is paired with #21ca8f in 3 real palettes, including Undergrowth and 7-Eleven's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Dark Orange #ff8c00
shippedDark Orange is paired with #21ca8f in 3 real palettes, including Playground and Citrus Grove, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #21ca8f
Tints & shades
Harmonies
Contrast
| #21ca8f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.12:1 | fail | fail | fail | |
Aaon black | 9.91:1 | pass | pass | pass | Passes 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 #21ca8f as the background.
Brands using this color
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #21ca8f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/21ca8f-a2beb8-d459c0-1f2c2d-e9f1eb?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md