Color
#21ded8
#21ded8rgb(33, 222, 216)hsl(178, 74%, 50%)oklch(0.815 0.136 191.3)Colors that go with #21ded8
Charcoal, Deep Sky Blue and Taupe 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 #21ded8: softer than #000 and cool enough to feel like part of the same palette.
Deep Sky Blue #00bfff
analogousshippedDeep Sky Blue is #21ded8's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Taupe #483c32
shippedTaupe is paired with #21ded8 in 10 real palettes, including Crayon Box and Astro's brand system, as the text colour against it.
Light Coral #f08080
complementaryLight Coral sits directly opposite #21ded8 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Crimson #dc143c
shippedCrimson is paired with #21ded8 in 3 real palettes, including Formula 1's brand system and Riot Games's brand system, as the supporting colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #21ded8: 3 real palettes, including Bluesky Social's brand system and Patreon's brand system, as the lead colour.
Khaki #f0e68c
shipped3 real palettes, including Pastel Pop and Nursery put Khaki beside #21ded8, as the accent.
Light Sea Green #20b2aa
shippedLight Sea Green shows up next to #21ded8 in 3 real palettes, including Prisma's brand system and Netlify's brand system, as the lead colour.
Real palettes that use #21ded8
Tints & shades
Harmonies
Contrast
| #21ded8 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.68:1 | fail | fail | fail | |
Aaon black | 12.5:1 | 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 #21ded8 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #21ded8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/21ded8-a2bcbe-d45999-1f282d-e9f1ed?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