Graphite
Open in tool →A greyscale system with a single amber — the accent does all the work, so allow one per screen.
Color
#ecf3fe
#ecf3fe
hex
#ecf3fergb
rgb(236, 243, 254)hsl
hsl(217, 90%, 96%)oklch
oklch(0.962 0.017 259.4)Closest name: Cotton Boll (#e7effb)Relative luminance 0.8909
Colors that go with #ecf3fe
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 #ecf3fe without the hard edge of pure #000.
Amber #ffbf00
shippedAmber is paired with #ecf3fe in 21 real palettes, including Binance's brand system and Trailhead, as the supporting colour.
Blue #0000ff
shipped47 real palettes, including Alaska Airlines's brand system and Dropbox's brand system put Blue beside #ecf3fe, as the accent.
Blue Violet #8a2be2
shippedBlue Violet is paired with #ecf3fe in 12 real palettes, including Gemstone and ClickUp's brand system, as the supporting colour.
Blush Pink #e8b4b8
shipped7 real palettes, including Estate and Rain Garden put Blush Pink beside #ecf3fe, as the accent.
Brown #a52a2a
shipped5 real palettes, including Velvet and Typewriter put Brown beside #ecf3fe, as the lead colour.
Burgundy #800020
shipped5 real palettes, including Candlelight and Heinz's brand system put Burgundy beside #ecf3fe, as the lead colour.
Burlywood #deb887
shippedBurlywood is paired with #ecf3fe in 8 real palettes, including Coastal and Velvet, as the accent.
Real palettes that use #ecf3fe
Tints & shades
Harmonies
Contrast
| #ecf3fe as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.12:1 | fail | fail | fail | |
Aaon black | 18.82:1 | 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 #ecf3fe as the background.
Brands using this color
Palettes built around it
Ledger Dark
Open in tool →Gold on midnight is the private-banking cue; the mint accent keeps it from feeling old-money stuffy.
Estate
Open in tool →Bronze on charcoal signals premium listings; the silver accent handles secondary detail without adding color.
Noir Beauty
Open in tool →Black, gold and one deep red — the prestige cosmetics counter: all restraint and a single lipstick.
Alpine
Open in tool →Glacier blue with a safety-orange accent: technical outdoor gear, not lifestyle.
Studio Grey
Open in tool →A pure greyscale with a single electric blue — the portfolio palette that makes work look considered.
Dusk
Open in tool →Slate blue with a copper accent — calm, professional, slightly editorial; suits consultancies and journals.
Arcade
Open in tool →Hot pink, cyan and acid yellow on near-black — cabinet-glow neon; the black surface is what makes the colours light up.
Glacier
Open in tool →Three blues from ice to deep water on a pale surface — a monochromatic winter set with real depth.
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.
Ink Wash
Open in tool →Greys on near-black — the monochrome dark mode; keep everything a tint of white and the layout does the talking.
Gemstone
Open in tool →Emerald, amethyst and ruby on velvet-black — the jewel-tone trio; the surface must be dark or the stones go plastic.
Fonts for this mood
#ecf3fe reads as cool, vivid, light. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #ecf3fe
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 #ecf3fe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/ecf3fe-9ca7c4-df624e-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