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cyan · cool

#f5fefe

a pale, electric cyan · cool · closest name: Azure

Token name suggestion: Chalk Reef

RGB
245, 254, 254
HSL
180°, 82%, 98%
CMYK
4, 0, 0, 0
Luminance
0.9745

#f5fefe is a pale electric cyan, 180° on the wheel and 88/100 on the cool side. Put black text on it (20.49:1). As text it scores 1.02:1 on white — use #0D8181 instead. Nearest name is Azure, nearest Tailwind family is cyan.

hsl(180 82% 98%)rgb(245 254 254)Base step 50AAA inkCool

At a glance

Every number on this page in one read: what #f5fefe is made of, how bright it looks, and which way it leans.

Hex
#f5fefe
Hue
180°
cyan
Saturation
82%
electric
Lightness
98%
pale
Brightness
100%
HSV value
Perceived
99%
weighted brightness
Luminance
0.9745
WCAG relative
Temperature
Cool
88/100 cool
Color family
Cyan
Tone
Electric
Best ink
Black
20.49:1
Closest name
Azure
ΔE2000 2.3
Chroma
3.1
LCH, 0–130ish
OKLCH L
0.990
perceptual lightness
Tailwind
cyan
500 · ΔE 28.3
Web-safe
#FFFFFF
nearest of 216
Where it sits
Hue180° of 360°
Saturation82%
Lightness98%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #f5fefe.

Temperature
Warm ← → Cool88% 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
Red20%
Green73%
Blue7%

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

Every format

HEX#f5fefe
HEX (8-digit)#f5fefeff
RGBrgb(245, 254, 254)
RGBArgba(245, 254, 254, 1)
HSLhsl(180, 82%, 98%)
HSV / HSBhsv(180, 4%, 100%)
HWBhwb(180 96% 0%)
CMYKcmyk(4%, 0%, 0%, 0%)
LABlab(99.0 -2.9 -1.0)
LCHlch(99.0 3.1 199.3)
OKLCHoklch(0.990 0.009 197.0)
XYZ (D65)xyz(90.98, 97.45, 107.76)
Decimal16121598
Display P3color(display-p3 0.961 0.996 0.996)
Web-safe#FFFFFF

Copy-ready code

every platformclick to select
/* CSS */
color: #f5fefe;
background-color: #f5fefe;
/* CSS custom property */
--brand: #f5fefe;
/* Tailwind (arbitrary) */
class="text-[#f5fefe] bg-[#f5fefe]"
/* SCSS */
$brand: #f5fefe;
/* SwiftUI */
Color(red: 0.961, green: 0.996, blue: 0.996)
/* UIKit */
UIColor(red: 0.961, green: 0.996, blue: 0.996, alpha: 1)
/* Android XML */
<color name="brand">#F5FEFE</color>
/* Android Compose */
Color(0xFFF5FEFE)
/* Flutter */
Color(0xFFF5FEFE)
/* Python / OpenCV (BGR) */
(254, 254, 245)
/* Python / PIL (RGB) */
(245, 254, 254)
/* Java AWT */
new Color(245, 254, 254)
/* .NET */
Color.FromArgb(255, 245, 254, 254)
/* OpenGL / Unity (0–1) */
(0.9608f, 0.9961f, 0.9961f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{245,254,254}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #f5fefe 85%, white);
border-color: color-mix(in oklab, #f5fefe 40%, transparent);
/* theme-aware in one line */
color: light-dark(#0C7474, #D3EEEE);
/* relative colour syntax */
--hover: hsl(from #f5fefe 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: #f5fefe;
  --brand-100: #E6F9F9;
  --brand-200: #C6F6F6;
  --brand-300: #99F5F5;
  --brand-400: #66F0F0;
  --brand-500: #33EBEB;
  --brand-600: #16DFDF;
  --brand-700: #13B9B9;
  --brand-800: #0F9494;
  --brand-900: #0F6B6B;
  --brand-950: #094343;
  --brand: #f5fefe;
  --brand-ink: #000000;
  --brand-surface: #F4FAFA;
  --brand-border: #C0EDED;
  --brand-hover: #D4FBFB;
  --brand-pressed: #B4F7F7;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142424;
    --brand-ink: #D3EEEE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#f5fefe',
        100: '#E6F9F9',
        200: '#C6F6F6',
        300: '#99F5F5',
        400: '#66F0F0',
        500: '#33EBEB',
        600: '#16DFDF',
        700: '#13B9B9',
        800: '#0F9494',
        900: '#0F6B6B',
        950: '#094343',
        DEFAULT: '#f5fefe',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #f5fefe,
  '100': #E6F9F9,
  '200': #C6F6F6,
  '300': #99F5F5,
  '400': #66F0F0,
  '500': #33EBEB,
  '600': #16DFDF,
  '700': #13B9B9,
  '800': #0F9494,
  '900': #0F6B6B,
  '950': #094343,
);
$brand-base: #f5fefe;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#f5fefe", "$type": "color" },
      "100": { "$value": "#E6F9F9", "$type": "color" },
      "200": { "$value": "#C6F6F6", "$type": "color" },
      "300": { "$value": "#99F5F5", "$type": "color" },
      "400": { "$value": "#66F0F0", "$type": "color" },
      "500": { "$value": "#33EBEB", "$type": "color" },
      "600": { "$value": "#16DFDF", "$type": "color" },
      "700": { "$value": "#13B9B9", "$type": "color" },
      "800": { "$value": "#0F9494", "$type": "color" },
      "900": { "$value": "#0F6B6B", "$type": "color" },
      "950": { "$value": "#094343", "$type": "color" }
    },
    "brandInk": { "$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 #f5fefe · 20.49:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.02:1
AA fail · AA large fail · AAA fail
Aa
Black text · 20.49:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #f5fefe as text scores 1.02:1 on white and 20.49:1 on black.
Best tinted ink on it, if plain black or white feels flat: #0C7474 at 5.44:1.

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
#0D8181 · 4.69:1
AA on white−70% L
#0D8181
The quick fox
#0A6060 · 7.36:1
AAA on white−77% L
#0A6060
The quick fox
#f5fefe · 20.49:1
AA on blackalready passes
#f5fefe
The quick fox
#f5fefe · 20.49:1
AAA on blackalready passes
#f5fefe

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #10A1A1 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
#f5fefe on white: 1.02:1
AA ✗ fail · AA-large · AAA
Aa
#f5fefe on black: 20.49:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #f5fefe as text on that neutral, and that neutral as text on #f5fefe.

NeutralRatioBoth directions
White1.02:1AaAa
Slate 501.02:1AaAa
Slate 1001.07:1AaAa
Slate 2001.20:1AaAa
Slate 3001.45:1AaAa
Slate 4002.50:1AaAa
Slate 5004.64:1AaAa
Slate 6007.39:1AaAa
Slate 70010.10:1AaAa
Slate 80014.27:1AaAa
Slate 90017.42:1AaAa
Black20.49:1AaAa
Colour vision deficiency
true color
protanopia · #FDFDFE
deuteranopia · #FBFCFE
tritanopia · #F3FFFE

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. #f5fefe is pinned to step 50; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#f5fefe
#E6F9F9
#C6F6F6
#99F5F5
#66F0F0
#33EBEB
#16DFDF
#13B9B9
#0F9494
#0F6B6B
#094343
Base = 50Lightest = 50 · #f5fefeDarkest = 950 · #094343Text step on white = 900
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 0.002 197.0);
  --brand-100: oklch(0.94 0.004 197.0);
  --brand-200: oklch(0.88 0.006 197.0);
  --brand-300: oklch(0.80 0.007 197.0);
  --brand-400: oklch(0.72 0.009 197.0);
  --brand-500: oklch(0.64 0.009 197.0);
  --brand-600: oklch(0.56 0.009 197.0);
  --brand-700: oklch(0.48 0.009 197.0);
  --brand-800: oklch(0.40 0.008 197.0);
  --brand-900: oklch(0.32 0.007 197.0);
  --brand-950: oklch(0.24 0.005 197.0);
}

Colors that work with #f5fefe

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#F4FAFA
Tinted page background
Border#C0EDED
Hairlines and dividers
Muted text#4B9B9B
Captions on the surface
Accent#B91338
Second voice, not a rival
Dark variant#0C7474
Hover, pressed, headers
Light variant#E8FDFD
Selected rows, tints
Dark surface#142424
Dark-mode background
Hover#D4FBFB
One step down in lightness
Pressed#B4F7F7
Two steps down
Disabled#F3F7F7
Chroma pulled out
Focus ring#D8FDFD
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 #f5fefe

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

Works well for
  • Text and icons on dark surfaces
  • Primary buttons and calls to action
  • Focus rings, active and selected states
  • Card and section backgrounds
  • Brand accents, badges and data highlights
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • White text placed on it
  • Thin strokes and 1px borders — they disappear on light UI
  • 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 #0C7474
Safe as a 1px border on white
No — use #10A1A1

Meaning and mood

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

cleantechnicalfreshclinical

Cyan reads as water, air and infrastructure: cool, hygienic, engineered.

At this chroma the association is amplified — it will dominate anything placed beside it, so give it space and use it sparingly. The high lightness makes it recede — a surface colour rather than a statement.

Worth knowing

At high lightness it disappears into white surfaces and thin strokes vanish entirely.

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight2/100
  • TemperatureCool
  • ApproachabilityReserved

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#FEF5F5
Analogous left#F5FEF9
Analogous right#F5F9FE
Split-complement 1#FEF5F9
Split-complement 2#FEF9F5
Triadic 1#FEF5FE
Triadic 2#FEFEF5
Tetradic#F9F5FE
On the wheel
Base+30°−30°+120°+240°+180°180°

#f5fefe sits at 180°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red96.1%
Green99.6%
Blue99.6%
R · 0–255
245
0xf5
G · 0–255
254
0xfe
B · 0–255
254
0xfe

CMYK percentages

Cyan3.5%
Magenta0.0%
Yellow0.0%
Key (black)0.4%

Total ink coverage is 4%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#f5fefe text on a black background

contrast 20.49:1

Card sample

#f5fefe text on a white background

contrast 1.02:1

Card sample

#f5fefe on grey

1.07:1

#f5fefe on its own surface

1.03:1

#f5fefe on its dark surface

15.67:1

CSS3 live lab

Text font color

The quick brown fox

color: #f5fefe;
Background color
Panel with #f5fefe background
background-color: #f5fefe;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #f5fefe;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(245, 254, 254, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(245, 254, 254, 0.45);
Border & gradient
Gradient panel
border: 3px solid #f5fefe;
background: linear-gradient(135deg, #f5fefe, #F5F8FE);
Gradient text

Gradient headline

background: linear-gradient(90deg, #f5fefe, #F5F6FE);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #f5fefe;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #f5fefe;
caret-color: #f5fefe;
Left rule
Pull quote or callout
border-left: 4px solid #f5fefe;
Ring + tint
Selected chip
background: #E8FDFD;
box-shadow: inset 0 0 0 2px #f5fefe;
Conic badge
68%
background: conic-gradient(#f5fefe 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #f5fefe 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(245, 254, 254, 0.5)
rgb(245 254 254 / 50%)
#f5fefe80
hsl(180 82% 98% / 50%)
color-mix(in srgb, #f5fefe 50%, transparent)
Alpha8-digit hexFlat on white
10%#f5fefe1a#FEFFFF
20%#f5fefe33#FDFFFF
40%#f5fefe66#FBFFFF
60%#f5fefe99#F9FEFE
80%#f5fefecc#F7FEFE

Gradients from #f5fefe

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, #ECFDFD, #f5fefe 45%, #0C7474);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #f5fefe, #D9E2FB);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #f5fefe, #FEF5F5);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #F1FEFE 0%, #f5fefe 45%, #0C7474 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAFA, #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%, #0C7474 0%, transparent 65%), #f5fefe;

Monochromatic scale

Palettes built from #f5fefe

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.

#f5fefe in the real world

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

Industries
TechnologyTravelHealthcareMedia
Common UI roles
SurfacesBadgesHighlightsEmpty states
Print note

Sits outside most CMYK gamuts — expect a duller press result, or specify a spot ink.

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 20.49:1.

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.

#f5fefe, answered

What color is #f5fefe?

#f5fefe is a pale electric cyan, closest to Azure (ΔE2000 2.3). It sits at 180° on the hue wheel with 82% saturation and 98% lightness, which reads as cool.

What is the RGB value of #f5fefe?

rgb(245, 254, 254) — 245 red, 254 green and 254 blue out of 255, or 96.1% / 99.6% / 99.6% by channel.

What is #f5fefe in HSL and HSV?

hsl(180, 82%, 98%) and hsv(180, 4%, 100%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #f5fefe a light or a dark color?

It is a light color. Relative luminance is 0.9745 and perceived brightness is 99%, so black text on it reaches 20.49:1.

Should I use black or white text on #f5fefe?

Black. It scores 20.49:1 against #f5fefe, versus 1.02:1 for white — AAA at any size.

Is #f5fefe accessible on a white background?

#f5fefe on white scores 1.02:1, which fails WCAG AA at every size. Darken it to #0D8181 to reach 4.5:1, or #0A6060 for 7:1.

What is the complementary color of #f5fefe?

#FEF5F5 sits directly opposite on the wheel. Softer options are the split-complements #FEF5F9 and #FEF9F5, which give the same contrast with far less vibration.

What colors go well with #f5fefe?

For interface work: #F4FAFA as the surface, #C0EDED for borders, #4B9B9B for secondary text, #B91338 as an accent and #0C7474 for hover and pressed states. For a palette, the analogous pair #F5FEF9 and #F5F9FE stays calm, while #FEF5F5 is the loudest partner.

What is #f5fefe in CMYK for printing?

cmyk(4%, 0%, 0%, 0%). This is a screen-to-ink approximation — a color this saturated sits outside most CMYK gamuts and will print duller than it looks here.

Is #f5fefe warm or cool?

Cool — it scores 88 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #F1FEF9; nudged cooler, #F1F9FE.

Which Tailwind color is closest to #f5fefe?

The cyan family — its 500 step is #06b6d4, ΔE2000 28.3 away. That is a visible difference, so define #f5fefe as a custom token rather than reaching for the built-in.

How do I use #f5fefe in Tailwind CSS?

Inline it as an arbitrary value with bg-[#f5fefe] or text-[#f5fefe], 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 #f5fefe with 50% opacity?

rgba(245, 254, 254, 0.5), or #f5fefe80 in eight-digit hex. Over white that composites to #FAFFFF; over black, #7B7F7F.

Is #f5fefe a web-safe color?

No. The nearest web-safe colour is #FFFFFF, ΔE2000 4.1 away. The palette only matters for legacy displays and some email clients now.

What does the color #f5fefe mean?

As a cyan, it reads clean, technical, fresh. Cyan reads as water, air and infrastructure: cool, hygienic, engineered. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #f5fefe?

The safest is same-hue elevation: linear-gradient(135deg, #ECFDFD, #f5fefe 45%, #0C7474). For more colour, a short hue run to #D9E2FB keeps it rich without turning muddy.

Work with #f5fefe in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #f5fefe at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.