Terminal
Open in tool →Green for success, blue for links, pink for emphasis — the dark-mode developer family, tuned to sit on near-black without glare.
Color
#efeffb
#efeffb
hex
#efeffbrgb
rgb(239, 239, 251)hsl
hsl(240, 60%, 96%)oklch
oklch(0.956 0.016 286.1)Closest name: Foundation White (#efeeff)Relative luminance 0.8705
Colors that go with #efeffb
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 #efeffb without the hard edge of pure #000.
Amber #ffbf00
shippedAmber is paired with #efeffb in 17 real palettes, including Binance's brand system and Blueprint, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Blue #0000ff
shippedBlue is paired with #efeffb in 37 real palettes, including Binance's brand system and Dropbox's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Blue Violet #8a2be2
shippedBlue Violet is paired with #efeffb in 11 real palettes, including Gemstone and ClickUp's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Blush Pink #e8b4b8
shippedBlush Pink is paired with #efeffb in 7 real palettes, including Estate and Blush, as the accent — a combination designers have actually shipped, not a computed rotation.
Brown #a52a2a
shippedBrown is paired with #efeffb in 5 real palettes, including Velvet and Garnet, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Burgundy #800020
shippedBurgundy is paired with #efeffb in 4 real palettes, including Candlelight and Heinz's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Burlywood #deb887
shippedBurlywood is paired with #efeffb in 6 real palettes, including Velvet and Chalkboard, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #efeffb
Tints & shades
Harmonies
Contrast
| #efeffb as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.14:1 | fail | fail | fail | |
Aaon black | 18.41:1 | 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 #efeffb as the background.
Brands using this color
Palettes built around it
Graphite
Open in tool →A greyscale system with a single amber — the accent does all the work, so allow one per screen.
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.
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.
Velvet
Open in tool →Burgundy and plum on near-black with a brass accent — theatre, wine, and anything that wants to feel after-dark.
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.
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
#efeffb reads as cool, vivid, light. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #efeffb
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 #efeffb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/efeffb-a19cc4-df994e-251f2d-e9edf1?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