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blue · cool

#efeff2

a pale, muted blue · cool · closest name: White Smoke

Token name suggestion: Chalk Sapphire

RGB
239, 239, 242
HSL
240°, 10%, 94%
CMYK
1, 1, 0, 5
Luminance
0.8649

#efeff2 is a pale muted blue, 240° on the wheel and 60/100 on the cool side. Put black text on it (18.30:1). As text it scores 1.15:1 on white — use #73738D instead. Nearest name is White Smoke, nearest Tailwind family is cyan.

hsl(240 10% 94%)rgb(239 239 242)Base step 100AAA inkCool

At a glance

Every number on this page in one read: what #efeff2 is made of, how bright it looks, and which way it leans.

Hex
#efeff2
Hue
240°
blue
Saturation
10%
muted
Lightness
94%
pale
Brightness
95%
HSV value
Perceived
94%
weighted brightness
Luminance
0.8649
WCAG relative
Temperature
Cool
60/100 cool
Color family
Blue
Tone
Muted
Best ink
Black
18.30:1
Closest name
White Smoke
ΔE2000 2
Chroma
1.5
LCH, 0–130ish
OKLCH L
0.953
perceptual lightness
Tailwind
cyan
500 · ΔE 30.4
Web-safe
#FFFFFF
nearest of 216
Where it sits
Hue240° of 360°
Saturation10%
Lightness94%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #efeff2.

Temperature
Warm ← → Cool60% cool

Reads cool. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.

Luminance by channel
Red21%
Green71%
Blue7%

Green carries most of what the eye calls brightness — that is why WCAG weights it 0.7152.

Every format

HEX#efeff2
HEX (8-digit)#efeff2ff
RGBrgb(239, 239, 242)
RGBArgba(239, 239, 242, 1)
HSLhsl(240, 10%, 94%)
HSV / HSBhsv(240, 1%, 95%)
HWBhwb(240 94% 5%)
CMYKcmyk(1%, 1%, 0%, 5%)
LABlab(94.5 0.5 -1.4)
LCHlch(94.5 1.5 290.1)
OKLCHoklch(0.953 0.004 286.3)
XYZ (D65)xyz(82.49, 86.49, 96.34)
Decimal15724530
Display P3color(display-p3 0.937 0.937 0.949)
Web-safe#FFFFFF

Copy-ready code

every platformclick to select
/* CSS */
color: #efeff2;
background-color: #efeff2;
/* CSS custom property */
--brand: #efeff2;
/* Tailwind (arbitrary) */
class="text-[#efeff2] bg-[#efeff2]"
/* SCSS */
$brand: #efeff2;
/* SwiftUI */
Color(red: 0.937, green: 0.937, blue: 0.949)
/* UIKit */
UIColor(red: 0.937, green: 0.937, blue: 0.949, alpha: 1)
/* Android XML */
<color name="brand">#EFEFF2</color>
/* Android Compose */
Color(0xFFEFEFF2)
/* Flutter */
Color(0xFFEFEFF2)
/* Python / OpenCV (BGR) */
(242, 239, 239)
/* Python / PIL (RGB) */
(239, 239, 242)
/* Java AWT */
new Color(239, 239, 242)
/* .NET */
Color.FromArgb(255, 239, 239, 242)
/* OpenGL / Unity (0–1) */
(0.9373f, 0.9373f, 0.9490f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{239,239,242}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #efeff2 85%, white);
border-color: color-mix(in oklab, #efeff2 40%, transparent);
/* theme-aware in one line */
color: light-dark(#393946, #DDDDE4);
/* relative colour syntax */
--hover: hsl(from #efeff2 h s calc(l - 7));

Design tokens

The same ramp in the four formats a team actually needs. Paste one and the whole palette lands with it.

css custom propertiesclick to select
:root {
  --brand-50: #F7F7F8;
  --brand-100: #efeff2;
  --brand-200: #DBDBE1;
  --brand-300: #C1C1CD;
  --brand-400: #A2A2B4;
  --brand-500: #83839A;
  --brand-600: #6E6E87;
  --brand-700: #5B5B71;
  --brand-800: #49495A;
  --brand-900: #373743;
  --brand-950: #23232A;
  --brand: #efeff2;
  --brand-ink: #000000;
  --brand-surface: #F7F7F8;
  --brand-border: #D2D2DA;
  --brand-hover: #DBDBE2;
  --brand-pressed: #C8C8D2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #19191F;
    --brand-ink: #DDDDE4;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F7F7F8',
        100: '#efeff2',
        200: '#DBDBE1',
        300: '#C1C1CD',
        400: '#A2A2B4',
        500: '#83839A',
        600: '#6E6E87',
        700: '#5B5B71',
        800: '#49495A',
        900: '#373743',
        950: '#23232A',
        DEFAULT: '#efeff2',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F7F7F8,
  '100': #efeff2,
  '200': #DBDBE1,
  '300': #C1C1CD,
  '400': #A2A2B4,
  '500': #83839A,
  '600': #6E6E87,
  '700': #5B5B71,
  '800': #49495A,
  '900': #373743,
  '950': #23232A,
);
$brand-base: #efeff2;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F7F7F8", "$type": "color" },
      "100": { "$value": "#efeff2", "$type": "color" },
      "200": { "$value": "#DBDBE1", "$type": "color" },
      "300": { "$value": "#C1C1CD", "$type": "color" },
      "400": { "$value": "#A2A2B4", "$type": "color" },
      "500": { "$value": "#83839A", "$type": "color" },
      "600": { "$value": "#6E6E87", "$type": "color" },
      "700": { "$value": "#5B5B71", "$type": "color" },
      "800": { "$value": "#49495A", "$type": "color" },
      "900": { "$value": "#373743", "$type": "color" },
      "950": { "$value": "#23232A", "$type": "color" }
    },
    "brandInk": { "$value": "#000000", "$type": "color" }
  }
}

Best text color

Only one of black and white can be right. This is the one, with the number that proves it.

Readable at a glance#000000 on #efeff2 · 18.30:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.15:1
AA fail · AA large fail · AAA fail
Aa
Black text · 18.30:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #efeff2 as text scores 1.15:1 on white and 18.30:1 on black.
Best tinted ink on it, if plain black or white feels flat: #393946 at 9.90:1.

Make it accessible

A contrast checker tells you that you failed. This tells you what to ship instead — same hue, same saturation, lightness moved only as far as WCAG demands.

The quick fox
#73738D · 4.60:1
AA on white−44% L
#73738D
The quick fox
#555569 · 7.27:1
AAA on white−57% L
#555569
The quick fox
#efeff2 · 18.30:1
AA on blackalready passes
#efeff2
The quick fox
#efeff2 · 18.30:1
AAA on blackalready passes
#efeff2

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #9292A6 is enough for headings on white. Non-text elements such as icons, chart strokes and focus rings also sit at 3:1 under WCAG 2.2 (1.4.11).

Accessibility — WCAG contrast

Aa
#efeff2 on white: 1.15:1
AA ✗ fail · AA-large · AAA
Aa
#efeff2 on black: 18.30:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #efeff2 as text on that neutral, and that neutral as text on #efeff2.

NeutralRatioBoth directions
White1.15:1AaAa
Slate 501.10:1AaAa
Slate 1001.05:1AaAa
Slate 2001.07:1AaAa
Slate 3001.29:1AaAa
Slate 4002.23:1AaAa
Slate 5004.15:1AaAa
Slate 6006.60:1AaAa
Slate 7009.02:1AaAa
Slate 80012.75:1AaAa
Slate 90015.56:1AaAa
Black18.30:1AaAa
Colour vision deficiency
true color
protanopia · #EEEFF2
deuteranopia · #EEEFF2
tritanopia · #EEEFF0

Roughly one man in twelve has some form of colour vision deficiency. If any of the three panels above is hard to tell apart from a neighbouring colour in your palette, add a shape, an icon or a label so the meaning does not rest on hue alone.

Color scale — 50 to 950

A Tailwind-shaped ramp built around this exact hex. #efeff2 is pinned to step 100; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F7F7F8
#efeff2
#DBDBE1
#C1C1CD
#A2A2B4
#83839A
#6E6E87
#5B5B71
#49495A
#373743
#23232A
Base = 100Lightest = 50 · #F7F7F8Darkest = 950 · #23232AText step on white = 600
Perceptual ramp — OKLCH

The same eleven steps expressed in OKLCH, where equal lightness numbers actually look equally spaced. HSL ramps go muddy in the yellows and washed out in the blues; this one does not. Modern browsers render it natively — the hex ramp above is the fallback.

50100200300400500600700800900950
oklch tokensclick to select
:root {
  --brand-50: oklch(0.97 0.001 286.3);
  --brand-100: oklch(0.94 0.002 286.3);
  --brand-200: oklch(0.88 0.002 286.3);
  --brand-300: oklch(0.80 0.003 286.3);
  --brand-400: oklch(0.72 0.004 286.3);
  --brand-500: oklch(0.64 0.004 286.3);
  --brand-600: oklch(0.56 0.004 286.3);
  --brand-700: oklch(0.48 0.004 286.3);
  --brand-800: oklch(0.40 0.003 286.3);
  --brand-900: oklch(0.32 0.003 286.3);
  --brand-950: oklch(0.24 0.002 286.3);
}

Colors that work with #efeff2

Not a palette — a role sheet. Each swatch answers one question you will hit while building the component.

Text on it#000000
Black wins here
Surface#F7F7F8
Tinted page background
Border#D2D2DA
Hairlines and dividers
Muted text#67677F
Captions on the surface
Accent#787154
Second voice, not a rival
Dark variant#393946
Hover, pressed, headers
Light variant#F1F1F4
Selected rows, tints
Dark surface#19191F
Dark-mode background
Hover#DBDBE2
One step down in lightness
Pressed#C8C8D2
Two steps down
Disabled#F4F4F6
Chroma pulled out
Focus ring#E6E6EF
Offset from the fill so it reads
Light mode
Everything in its place

Surface, border, heading and body all derive from this one hue, so the screen stays coherent without a second palette.

Primary actionSecondaryBadge
Dark mode
Same hue, inverted

Lightness flips, hue holds. The accent stays the anchor in both themes.

Primary actionSecondaryAccent

In real components

The same eight roles, wired into the interface patterns you will actually build with them. Every state below is a computed value, not a mock-up.

Buttons and states
Save changesHoverPressedDisabled
OutlineSubtleLinkFocused
Form field
you@company.com

Focus ring uses the light variant so the field still reads as one shape.

Send me product updates
Notice
Your export is ready

The file stays available for seven days. Download it before it expires.

NewBetaDraft
Data
Storage used68%
Acme LtdActive
NorthwindTrial
GlobexActive

How to use #efeff2

Derived from its contrast, chroma and lightness — not from taste.

Works well for
  • Text and icons on dark surfaces
  • Borders, dividers and quiet backgrounds
  • Long-form reading surfaces
  • Card and section backgrounds
  • Brand accents, badges and data highlights
Use with care
  • Text of any size on white — fails WCAG AA
  • White text placed on it
  • Pairing with a same-lightness hue — edges vibrate
Minimum size as text on white
Not as text
Safe as a fill behind white type
No — use #393946
Safe as a 1px border on white
No — use #9292A6

Meaning and mood

What a colour in this family tends to signal, and how this particular chroma and lightness change the reading.

trustedcalmcompetentcorporate

The default of institutions for a reason: blue is read as stable and safe across nearly every culture that has been surveyed.

With almost no chroma left, the family association is barely present; treat it as a neutral that happens to lean this way. The high lightness makes it recede — a surface colour rather than a statement.

Worth knowing

It is also the most crowded hue on the web. Distinctiveness has to come from your other choices.

Reads as
  • FormalityMedium
  • EnergyLow
  • Weight6/100
  • TemperatureCool
  • ApproachabilityBalanced

Colour associations are cultural and vary by market. Treat these as a starting point for a conversation with your audience, not a finding about them.

Similar colors

One move away from this hex in each direction. Every swatch is its own page.

Color relationships

The wheel positions with their names attached, so you can grab the one you actually need.

Complementary#F2F2EF
Analogous left#EFF0F2
Analogous right#F0EFF2
Split-complement 1#F2F0EF
Split-complement 2#F0F2EF
Triadic 1#F2EFEF
Triadic 2#EFF2EF
Tetradic#F2EFF0
On the wheel
Base+30°−30°+120°+240°+180°240°

#efeff2 sits at 240°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red93.7%
Green93.7%
Blue94.9%
R · 0–255
239
0xef
G · 0–255
239
0xef
B · 0–255
242
0xf2

CMYK percentages

Cyan1.2%
Magenta1.2%
Yellow0.0%
Key (black)5.1%

Total ink coverage is 8%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#efeff2 text on a black background

contrast 18.30:1

Card sample

#efeff2 text on a white background

contrast 1.15:1

Card sample

#efeff2 on grey

1.05:1

#efeff2 on its own surface

1.07:1

#efeff2 on its dark surface

15.25:1

CSS3 live lab

Text font color

The quick brown fox

color: #efeff2;
Background color
Panel with #efeff2 background
background-color: #efeff2;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #efeff2;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(239, 239, 242, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(239, 239, 242, 0.45);
Border & gradient
Gradient panel
border: 3px solid #efeff2;
background: linear-gradient(135deg, #efeff2, #F1EFF2);
Gradient text

Gradient headline

background: linear-gradient(90deg, #efeff2, #F2EFF2);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #efeff2;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #efeff2;
caret-color: #efeff2;
Left rule
Pull quote or callout
border-left: 4px solid #efeff2;
Ring + tint
Selected chip
background: #F1F1F4;
box-shadow: inset 0 0 0 2px #efeff2;
Conic badge
68%
background: conic-gradient(#efeff2 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #efeff2 over white; the bottom row is the same alpha over a checkerboard, so you can see what survives on a photo or a video.

Bottom row of hexes is the flattened result over white — use those when a design tool refuses transparency, or when you need a solid fallback.

alpha in every syntaxclick to select
rgba(239, 239, 242, 0.5)
rgb(239 239 242 / 50%)
#efeff280
hsl(240 10% 94% / 50%)
color-mix(in srgb, #efeff2 50%, transparent)
Alpha8-digit hexFlat on white
10%#efeff21a#FDFDFE
20%#efeff233#FCFCFC
40%#efeff266#F9F9FA
60%#efeff299#F5F5F7
80%#efeff2cc#F2F2F5

Gradients from #efeff2

Six recipes, each built from this hex and shown with the exact CSS that produced it.

Elevation
Same hue, three lightnesses — safe anywhere
background: linear-gradient(135deg, #F4F4F6, #efeff2 45%, #393946);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #efeff2, #E3DEE4);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #efeff2, #F2F2EF);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #F7F7F8 0%, #efeff2 45%, #393946 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F7F7F8, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #FFFFFF 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #FFFFFF 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #393946 0%, transparent 65%), #efeff2;

Monochromatic scale

Palettes built from #efeff2

Shades — darker

Tints — lighter

Tones — desaturated

Color harmonies

Nearest named colors

Ranked with CIEDE2000 across all 139 CSS keywords. Under ΔE 2 the eye stops telling them apart; over ΔE 10 they are plainly different colors.

#efeff2 in the real world

Where a color in this family tends to land, and the interface roles it is usually asked to play.

Industries
TechnologyFinanceHealthcareEnterprise SaaS
Common UI roles
BackgroundsBordersBody textDividers
Print note

Very light tints can drop out on uncoated stock; check it at 100% size before signing off.

On screens

Very light values are indistinguishable from white on a dim phone screen outdoors. Give it a border if the boundary matters.

In dark mode

Usable as-is on a dark surface at 18.30:1.

Explore nearby colors

Small, deliberate steps away from this hex — useful when you are hunting for the version of a colour that finally feels right.

#efeff2, answered

What color is #efeff2?

#efeff2 is a pale muted blue, closest to White Smoke (ΔE2000 2). It sits at 240° on the hue wheel with 10% saturation and 94% lightness, which reads as cool.

What is the RGB value of #efeff2?

rgb(239, 239, 242) — 239 red, 239 green and 242 blue out of 255, or 93.7% / 93.7% / 94.9% by channel.

What is #efeff2 in HSL and HSV?

hsl(240, 10%, 94%) and hsv(240, 1%, 95%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #efeff2 a light or a dark color?

It is a light color. Relative luminance is 0.8649 and perceived brightness is 94%, so black text on it reaches 18.30:1.

Should I use black or white text on #efeff2?

Black. It scores 18.30:1 against #efeff2, versus 1.15:1 for white — AAA at any size.

Is #efeff2 accessible on a white background?

#efeff2 on white scores 1.15:1, which fails WCAG AA at every size. Darken it to #73738D to reach 4.5:1, or #555569 for 7:1.

What is the complementary color of #efeff2?

#F2F2EF sits directly opposite on the wheel. Softer options are the split-complements #F2F0EF and #F0F2EF, which give the same contrast with far less vibration.

What colors go well with #efeff2?

For interface work: #F7F7F8 as the surface, #D2D2DA for borders, #67677F for secondary text, #787154 as an accent and #393946 for hover and pressed states. For a palette, the analogous pair #EFF0F2 and #F0EFF2 stays calm, while #F2F2EF is the loudest partner.

What is #efeff2 in CMYK for printing?

cmyk(1%, 1%, 0%, 5%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #efeff2 warm or cool?

Cool — it scores 60 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #F0EFF2; nudged cooler, #EFF0F2.

Which Tailwind color is closest to #efeff2?

The cyan family — its 500 step is #06b6d4, ΔE2000 30.4 away. That is a visible difference, so define #efeff2 as a custom token rather than reaching for the built-in.

How do I use #efeff2 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#efeff2] or text-[#efeff2], or register the whole ramp under theme.extend.colors.brand so you get bg-brand-500 and friends. The generated 50–950 scale on this page is ready to paste into your config.

What is #efeff2 with 50% opacity?

rgba(239, 239, 242, 0.5), or #efeff280 in eight-digit hex. Over white that composites to #F7F7F9; over black, #787879.

Is #efeff2 a web-safe color?

No. The nearest web-safe colour is #FFFFFF, ΔE2000 3.6 away. The palette only matters for legacy displays and some email clients now.

What does the color #efeff2 mean?

As a blue, it reads trusted, calm, competent. The default of institutions for a reason: blue is read as stable and safe across nearly every culture that has been surveyed. At this low chroma the association is faint; it behaves more like a neutral.

What gradient works with #efeff2?

The safest is same-hue elevation: linear-gradient(135deg, #F4F4F6, #efeff2 45%, #393946). For more colour, a short hue run to #E3DEE4 keeps it rich without turning muddy.

Work with #efeff2 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #efeff2 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.