Blueprint
Open in tool →Cyan and indigo on navy is the developer-tool look; amber is the only warm note, so it always reads as 'attention'.
Color
#dde5f3
#dde5f3
hex
#dde5f3rgb
rgb(221, 229, 243)hsl
hsl(218, 48%, 91%)oklch
oklch(0.92 0.021 261.8)Closest name: Celestial Cathedral (#daeaf6)Relative luminance 0.7788
Colors that go with #dde5f3
Charcoal, Amber 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 that reads cleanly against #dde5f3 without the hard edge of pure #000.
Amber #ffbf00
shippedAmber is paired with #dde5f3 in 21 real palettes, including Blueprint and Trailhead, as the accent.
Blue #0000ff
shipped47 real palettes, including Binance's brand system and Dropbox's brand system put Blue beside #dde5f3, as the accent.
Blue Violet #8a2be2
shippedBlue Violet is paired with #dde5f3 in 12 real palettes, including Gemstone and ClickUp's brand system, as the supporting colour.
Blush Pink #e8b4b8
shipped7 real palettes, including Estate and Blush put Blush Pink beside #dde5f3, as the accent.
Brown #a52a2a
shipped5 real palettes, including Velvet and Garnet put Brown beside #dde5f3, as the lead colour.
Burgundy #800020
shipped5 real palettes, including Candlelight and Heinz's brand system put Burgundy beside #dde5f3, as the lead colour.
Burlywood #deb887
shippedBurlywood is paired with #dde5f3 in 8 real palettes, including Velvet and Chalkboard, as the accent.
Real palettes that use #dde5f3
Tints & shades
Harmonies
Contrast
| #dde5f3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.27:1 | fail | fail | fail | |
Aaon black | 16.58:1 | 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 #dde5f3 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
#dde5f3 reads as cool, light, clean. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #dde5f3
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 #dde5f3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/dde5f3-9ca6c4-df644e-201f2d-e9f0f1?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