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cyan · cool

#3facd6

a balanced, vivid cyan · cool · closest name: Deep Sky Blue

Token name suggestion: Signal Lagoon

RGB
63, 172, 214
HSL
197°, 65%, 54%
CMYK
71, 20, 0, 16
Luminance
0.3542

#3facd6 is a balanced vivid cyan, 197° on the wheel and 94/100 on the cool side. Put black text on it (8.08:1). As text it scores 2.60:1 on white — use #227EA1 instead. Nearest name is Deep Sky Blue, nearest Tailwind family is sky.

hsl(197 65% 54%)rgb(63 172 214)Base step 500AAA inkCool

At a glance

Every number on this page in one read: what #3facd6 is made of, how bright it looks, and which way it leans.

Hex
#3facd6
Hue
197°
cyan
Saturation
65%
vivid
Lightness
54%
balanced
Brightness
84%
HSV value
Perceived
60%
weighted brightness
Luminance
0.3542
WCAG relative
Temperature
Cool
94/100 cool
Color family
Cyan
Tone
Vivid
Best ink
Black
8.08:1
Closest name
Deep Sky Blue
ΔE2000 6.6
Chroma
34.9
LCH, 0–130ish
OKLCH L
0.700
perceptual lightness
Tailwind
sky
500 · ΔE 6.1
Web-safe
#3399CC
nearest of 216
Where it sits
Hue197° of 360°
Saturation65%
Lightness54%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #3facd6.

Temperature
Warm ← → Cool94% 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
Red3%
Green83%
Blue14%

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

Every format

HEX#3facd6
HEX (8-digit)#3facd6ff
RGBrgb(63, 172, 214)
RGBArgba(63, 172, 214, 1)
HSLhsl(197, 65%, 54%)
HSV / HSBhsv(197, 71%, 84%)
HWBhwb(197 25% 16%)
CMYKcmyk(71%, 20%, 0%, 16%)
LABlab(66.1 -17.4 -30.2)
LCHlch(66.1 34.9 240.1)
OKLCHoklch(0.700 0.115 227.7)
XYZ (D65)xyz(28.94, 35.41, 68.92)
Decimal4173014
Display P3color(display-p3 0.247 0.675 0.839)
Web-safe#3399CC

Copy-ready code

every platformclick to select
/* CSS */
color: #3facd6;
background-color: #3facd6;
/* CSS custom property */
--brand: #3facd6;
/* Tailwind (arbitrary) */
class="text-[#3facd6] bg-[#3facd6]"
/* SCSS */
$brand: #3facd6;
/* SwiftUI */
Color(red: 0.247, green: 0.675, blue: 0.839)
/* UIKit */
UIColor(red: 0.247, green: 0.675, blue: 0.839, alpha: 1)
/* Android XML */
<color name="brand">#3FACD6</color>
/* Android Compose */
Color(0xFF3FACD6)
/* Flutter */
Color(0xFF3FACD6)
/* Python / OpenCV (BGR) */
(214, 172, 63)
/* Python / PIL (RGB) */
(63, 172, 214)
/* Java AWT */
new Color(63, 172, 214)
/* .NET */
Color.FromArgb(255, 63, 172, 214)
/* OpenGL / Unity (0–1) */
(0.2471f, 0.6745f, 0.8392f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{63,172,214}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #3facd6 85%, white);
border-color: color-mix(in oklab, #3facd6 40%, transparent);
/* theme-aware in one line */
color: light-dark(#165269, #D3E7EE);
/* relative colour syntax */
--hover: hsl(from #3facd6 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: #F3F9FB;
  --brand-100: #E8F3F7;
  --brand-200: #CBE6F1;
  --brand-300: #A3D7EB;
  --brand-400: #74C3E1;
  --brand-500: #3facd6;
  --brand-600: #2B9ECA;
  --brand-700: #2483A8;
  --brand-800: #1D6986;
  --brand-900: #194D62;
  --brand-950: #0F303D;
  --brand: #3facd6;
  --brand-ink: #000000;
  --brand-surface: #F4F9FA;
  --brand-border: #C0E0ED;
  --brand-hover: #2A9BC7;
  --brand-pressed: #2484A9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142024;
    --brand-ink: #D3E7EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F3F9FB',
        100: '#E8F3F7',
        200: '#CBE6F1',
        300: '#A3D7EB',
        400: '#74C3E1',
        500: '#3facd6',
        600: '#2B9ECA',
        700: '#2483A8',
        800: '#1D6986',
        900: '#194D62',
        950: '#0F303D',
        DEFAULT: '#3facd6',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F3F9FB,
  '100': #E8F3F7,
  '200': #CBE6F1,
  '300': #A3D7EB,
  '400': #74C3E1,
  '500': #3facd6,
  '600': #2B9ECA,
  '700': #2483A8,
  '800': #1D6986,
  '900': #194D62,
  '950': #0F303D,
);
$brand-base: #3facd6;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F3F9FB", "$type": "color" },
      "100": { "$value": "#E8F3F7", "$type": "color" },
      "200": { "$value": "#CBE6F1", "$type": "color" },
      "300": { "$value": "#A3D7EB", "$type": "color" },
      "400": { "$value": "#74C3E1", "$type": "color" },
      "500": { "$value": "#3facd6", "$type": "color" },
      "600": { "$value": "#2B9ECA", "$type": "color" },
      "700": { "$value": "#2483A8", "$type": "color" },
      "800": { "$value": "#1D6986", "$type": "color" },
      "900": { "$value": "#194D62", "$type": "color" },
      "950": { "$value": "#0F303D", "$type": "color" }
    },
    "brandInk": { "$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 #3facd6 · 8.08:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.60:1
AA fail · AA large fail · AAA fail
Aa
Black text · 8.08:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #3facd6 as text scores 2.60:1 on white and 8.08:1 on black.
Best tinted ink on it, if plain black or white feels flat: #165269 at 3.31:1.

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
#227EA1 · 4.60:1
AA on white−16% L
#227EA1
The quick fox
#195D77 · 7.31:1
AAA on white−26% L
#195D77
The quick fox
#3facd6 · 8.08:1
AA on blackalready passes
#3facd6
The quick fox
#3facd6 · 8.08:1
AAA on blackalready passes
#3facd6

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #2B9FCB 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
#3facd6 on white: 2.60:1
AA ✗ fail · AA-large · AAA
Aa
#3facd6 on black: 8.08:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #3facd6 as text on that neutral, and that neutral as text on #3facd6.

NeutralRatioBoth directions
White2.60:1AaAa
Slate 502.48:1AaAa
Slate 1002.37:1AaAa
Slate 2002.11:1AaAa
Slate 3001.75:1AaAa
Slate 4001.01:1AaAa
Slate 5001.83:1AaAa
Slate 6002.92:1AaAa
Slate 7003.99:1AaAa
Slate 8005.63:1AaAa
Slate 9006.87:1AaAa
Black8.08:1AaAa
Colour vision deficiency
true color
protanopia · #96A9D8
deuteranopia · #819AD5
tritanopia · #00B8BA

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. #3facd6 is pinned to step 500; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F3F9FB
#E8F3F7
#CBE6F1
#A3D7EB
#74C3E1
#3facd6
#2B9ECA
#2483A8
#1D6986
#194D62
#0F303D
Base = 500Lightest = 50 · #F3F9FBDarkest = 950 · #0F303DText step on white = 800
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 0.029 227.7);
  --brand-100: oklch(0.94 0.046 227.7);
  --brand-200: oklch(0.88 0.069 227.7);
  --brand-300: oklch(0.80 0.089 227.7);
  --brand-400: oklch(0.72 0.105 227.7);
  --brand-500: oklch(0.64 0.115 227.7);
  --brand-600: oklch(0.56 0.115 227.7);
  --brand-700: oklch(0.48 0.108 227.7);
  --brand-800: oklch(0.40 0.096 227.7);
  --brand-900: oklch(0.32 0.080 227.7);
  --brand-950: oklch(0.24 0.063 227.7);
}

Colors that work with #3facd6

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#F4F9FA
Tinted page background
Border#C0E0ED
Hairlines and dividers
Muted text#4B859B
Captions on the surface
Accent#DB3F3A
Second voice, not a rival
Dark variant#165269
Hover, pressed, headers
Light variant#EAF6FB
Selected rows, tints
Dark surface#142024
Dark-mode background
Hover#2A9BC7
One step down in lightness
Pressed#2484A9
Two steps down
Disabled#B5C8D0
Chroma pulled out
Focus ring#45B8E4
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 #3facd6

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
  • Brand accents, badges and data highlights
  • Chart series and data categories
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • 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 #165269
Safe as a 1px border on white
No — use #2B9FCB

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.

This is a confident chroma: strong enough to lead a brand, restrained enough to live in an interface all day. The mid lightness keeps it versatile in both themes.

Worth knowing

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

Reads as
  • FormalityMedium
  • EnergyMedium-high
  • Weight46/100
  • 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#D6693F
Analogous left#3FD6B5
Analogous right#3F60D6
Split-complement 1#D63F60
Split-complement 2#D6B53F
Triadic 1#D63FAC
Triadic 2#ACD63F
Tetradic#B53FD6
On the wheel
Base+30°−30°+120°+240°+180°197°

#3facd6 sits at 197°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red24.7%
Green67.5%
Blue83.9%
R · 0–255
63
0x3f
G · 0–255
172
0xac
B · 0–255
214
0xd6

CMYK percentages

Cyan70.6%
Magenta19.6%
Yellow0.0%
Key (black)16.1%

Total ink coverage is 106%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#3facd6 text on a black background

contrast 8.08:1

Card sample

#3facd6 text on a white background

contrast 2.60:1

Card sample

#3facd6 on grey

2.37:1

#3facd6 on its own surface

2.45:1

#3facd6 on its dark surface

6.41:1

CSS3 live lab

Text font color

The quick brown fox

color: #3facd6;
Background color
Panel with #3facd6 background
background-color: #3facd6;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #3facd6;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(63, 172, 214, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 172, 214, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3facd6;
background: linear-gradient(135deg, #3facd6, #3F47D6);
Gradient text

Gradient headline

background: linear-gradient(90deg, #3facd6, #5C3FD6);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #3facd6;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #3facd6;
caret-color: #3facd6;
Left rule
Pull quote or callout
border-left: 4px solid #3facd6;
Ring + tint
Selected chip
background: #EAF6FB;
box-shadow: inset 0 0 0 2px #3facd6;
Conic badge
68%
background: conic-gradient(#3facd6 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #3facd6 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(63, 172, 214, 0.5)
rgb(63 172 214 / 50%)
#3facd680
hsl(197 65% 54% / 50%)
color-mix(in srgb, #3facd6 50%, transparent)
Alpha8-digit hexFlat on white
10%#3facd61a#ECF7FB
20%#3facd633#D9EEF7
40%#3facd666#B2DEEF
60%#3facd699#8CCDE6
80%#3facd6cc#65BDDE

Gradients from #3facd6

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, #71C2E1, #3facd6 45%, #165269);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #3facd6, #302BCB);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #3facd6, #D6693F);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #8BCDE6 0%, #3facd6 45%, #165269 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F9FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #69DFBB 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #586ADB 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #165269 0%, transparent 65%), #3facd6;

Monochromatic scale

Palettes built from #3facd6

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.

#3facd6 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
ButtonsLinksFocus statesCharts
Print note

Converts to four-color process without much drama. Proof it anyway.

On screens

Holds up across typical panel gamma. Still worth checking on an uncalibrated laptop, where mid-tones shift most.

In dark mode

Usable as-is on a dark surface at 8.08:1.

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.

#3facd6, answered

What color is #3facd6?

#3facd6 is a balanced vivid cyan, closest to Deep Sky Blue (ΔE2000 6.6). It sits at 197° on the hue wheel with 65% saturation and 54% lightness, which reads as cool.

What is the RGB value of #3facd6?

rgb(63, 172, 214) — 63 red, 172 green and 214 blue out of 255, or 24.7% / 67.5% / 83.9% by channel.

What is #3facd6 in HSL and HSV?

hsl(197, 65%, 54%) and hsv(197, 71%, 84%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #3facd6 a light or a dark color?

It is a mid-tone. Relative luminance is 0.3542 and perceived brightness is 60%, so black text on it reaches 8.08:1.

Should I use black or white text on #3facd6?

Black. It scores 8.08:1 against #3facd6, versus 2.60:1 for white — AAA at any size.

Is #3facd6 accessible on a white background?

#3facd6 on white scores 2.60:1, which fails WCAG AA at every size. Darken it to #227EA1 to reach 4.5:1, or #195D77 for 7:1.

What is the complementary color of #3facd6?

#D6693F sits directly opposite on the wheel. Softer options are the split-complements #D63F60 and #D6B53F, which give the same contrast with far less vibration.

What colors go well with #3facd6?

For interface work: #F4F9FA as the surface, #C0E0ED for borders, #4B859B for secondary text, #DB3F3A as an accent and #165269 for hover and pressed states. For a palette, the analogous pair #3FD6B5 and #3F60D6 stays calm, while #D6693F is the loudest partner.

What is #3facd6 in CMYK for printing?

cmyk(71%, 20%, 0%, 16%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #3facd6 warm or cool?

Cool — it scores 94 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #3FD6C9; nudged cooler, #3D97D8.

Which Tailwind color is closest to #3facd6?

The sky family — its 500 step is #0ea5e9, ΔE2000 6.1 away. That is a visible difference, so define #3facd6 as a custom token rather than reaching for the built-in.

How do I use #3facd6 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#3facd6] or text-[#3facd6], 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 #3facd6 with 50% opacity?

rgba(63, 172, 214, 0.5), or #3facd680 in eight-digit hex. Over white that composites to #9FD6EB; over black, #20566B.

Is #3facd6 a web-safe color?

No. The nearest web-safe colour is #3399CC, ΔE2000 6.5 away. The palette only matters for legacy displays and some email clients now.

What does the color #3facd6 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 #3facd6?

The safest is same-hue elevation: linear-gradient(135deg, #71C2E1, #3facd6 45%, #165269). For more colour, a short hue run to #302BCB keeps it rich without turning muddy.

Work with #3facd6 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #3facd6 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.