Fresh Juice
Open in tool →Orange, mango and mint — a sugar rush; keep the type black so it stays legible under all that color.
Color
#21d4aa
#21d4aa
hex
#21d4aargb
rgb(33, 212, 170)hsl
hsl(166, 73%, 48%)oklch
oklch(0.777 0.147 171.1)Closest name: mediumaquamarine (#66cdaa)Relative luminance 0.5031
Colors that go with #21d4aa
Charcoal, Hot Pink and 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 #21d4aa: softer than #000 and cool enough to feel like part of the same palette.
Hot Pink #ff69b4
complementaryshippedHot Pink sits directly opposite #21d4aa on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped5 real palettes, including Unity's brand system and Canva's brand system put Blue beside #21d4aa, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #21d4aa in 4 real palettes, including Tiffany & Co.'s brand system and Formula 1's brand system, as the supporting colour.
Mustard Yellow #ffdb58
shipped4 real palettes, including Fresh Juice and Crayon Box put Mustard Yellow beside #21d4aa, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #21d4aa in 16 real palettes, including Crayon Box and Chime's brand system, as the text colour against it.
Light Coral #f08080
split-complementshippedLight Coral is a split-complement of #21d4aa: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #21d4aa: 3 real palettes, including Canva's brand system and Terminal, as the supporting colour.
Real palettes that use #21d4aa
Tints & shades
Harmonies
Contrast
| #21d4aa as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.9:1 | fail | fail | fail | |
Aaon black | 11.06:1 | 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 #21d4aa 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
mcpConnect your agent — build around #21d4aa
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #21d4aa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/21d4aa-a2bebb-d459b1-1f2a2d-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