Deep Water
Open in tool →Cyan and mid-blue on abyss navy with a foam highlight — the ocean at depth; the darker the surface, the brighter the water.
Color
#c9eefd
#c9eefd
hex
#c9eefdrgb
rgb(201, 238, 253)hsl
hsl(197, 93%, 89%)oklch
oklch(0.927 0.044 224.3)Closest name: Castle in the Sky (#d1eaed)Relative luminance 0.8066
Colors that go with #c9eefd
Charcoal, Coral and Dark Turquoise 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 #c9eefd: softer than #000 and cool enough to feel like part of the same palette.
Coral #ff7f50
complementaryshippedCoral sits directly opposite #c9eefd on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Dark Turquoise #00ced1
analogousshippedDark Turquoise is #c9eefd's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Deep Sky Blue #00bfff
analogousshippedDeep Sky Blue is #c9eefd's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Goldenrod #daa520
split-complementshippedGoldenrod is a split-complement of #c9eefd: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Light Coral #f08080
split-complementshippedLight Coral is a split-complement of #c9eefd: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Amber #ffbf00
shippedAmber is paired with #c9eefd in 21 real palettes, including Blueprint and Trailhead, as the accent.
Blue #0000ff
shipped47 real palettes, including Dropbox's brand system and Alaska Airlines's brand system put Blue beside #c9eefd, as the accent.
Real palettes that use #c9eefd
Tints & shades
Harmonies
Contrast
| #c9eefd as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.23:1 | fail | fail | fail | |
Aaon black | 17.13:1 | 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 #c9eefd 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
Fonts for this mood
#c9eefd reads as cool, vivid, light. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #c9eefd
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 #c9eefd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/c9eefd-9cb4c4-df4e6b-1f232d-e9f1ef?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