Color
#21dec2
#21dec2rgb(33, 222, 194)hsl(171, 74%, 50%)oklch(0.809 0.143 178.9)Colors that go with #21dec2
Charcoal, Crimson and Deep Sky Blue 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 #21dec2: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
shippedCrimson is paired with #21dec2 in 4 real palettes, including Formula 1's brand system and Tiffany & Co.'s brand system, as the supporting colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #21dec2: 4 real palettes, including Astro's brand system and Prime Video's brand system, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #21dec2 in 11 real palettes, including Crayon Box and Astro's brand system, as the text colour against it.
Hot Pink #ff69b4
complementaryHot Pink sits directly opposite #21dec2 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped3 real palettes, including Canva's brand system and Uber's brand system put Blue beside #21dec2, as the accent.
Khaki #f0e68c
shipped3 real palettes, including Lagoon and Pastel Pop put Khaki beside #21dec2, as the accent.
Plum #dda0dd
triadicshippedPlum completes a triad with #21dec2 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Real palettes that use #21dec2
Tints & shades
Harmonies
Contrast
| #21dec2 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.71:1 | fail | fail | fail | |
Aaon black | 12.29:1 | 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 #21dec2 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 #21dec2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/21dec2-a2bebd-d459a7-1f292d-e9f1ec?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