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cyan · cool

#47acda

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

Token name suggestion: Signal Lagoon

RGB
71, 172, 218
HSL
199°, 67%, 57%
CMYK
67, 21, 0, 15
Luminance
0.3591

#47acda is a balanced vivid cyan, 199° on the wheel and 95/100 on the cool side. Put black text on it (8.18:1). As text it scores 2.57:1 on white — use #227EA9 instead. Nearest name is Deep Sky Blue, nearest Tailwind family is sky.

hsl(199 67% 57%)rgb(71 172 218)Base step 500AAA inkCool

At a glance

Every number on this page in one read: what #47acda is made of, how bright it looks, and which way it leans.

Hex
#47acda
Hue
199°
cyan
Saturation
67%
vivid
Lightness
57%
balanced
Brightness
85%
HSV value
Perceived
61%
weighted brightness
Luminance
0.3591
WCAG relative
Temperature
Cool
95/100 cool
Color family
Cyan
Tone
Vivid
Best ink
Black
8.18:1
Closest name
Deep Sky Blue
ΔE2000 6
Chroma
35.1
LCH, 0–130ish
OKLCH L
0.704
perceptual lightness
Tailwind
sky
500 · ΔE 4.8
Web-safe
#3399CC
nearest of 216
Where it sits
Hue199° of 360°
Saturation67%
Lightness57%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #47acda.

Temperature
Warm ← → Cool95% 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
Red4%
Green82%
Blue14%

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

Every format

HEX#47acda
HEX (8-digit)#47acdaff
RGBrgb(71, 172, 218)
RGBArgba(71, 172, 218, 1)
HSLhsl(199, 67%, 57%)
HSV / HSBhsv(199, 67%, 85%)
HWBhwb(199 28% 15%)
CMYKcmyk(67%, 21%, 0%, 15%)
LABlab(66.5 -14.9 -31.8)
LCHlch(66.5 35.1 244.9)
OKLCHoklch(0.704 0.114 231.3)
XYZ (D65)xyz(30.00, 35.90, 71.67)
Decimal4697306
Display P3color(display-p3 0.278 0.675 0.855)
Web-safe#3399CC

Copy-ready code

every platformclick to select
/* CSS */
color: #47acda;
background-color: #47acda;
/* CSS custom property */
--brand: #47acda;
/* Tailwind (arbitrary) */
class="text-[#47acda] bg-[#47acda]"
/* SCSS */
$brand: #47acda;
/* SwiftUI */
Color(red: 0.278, green: 0.675, blue: 0.855)
/* UIKit */
UIColor(red: 0.278, green: 0.675, blue: 0.855, alpha: 1)
/* Android XML */
<color name="brand">#47ACDA</color>
/* Android Compose */
Color(0xFF47ACDA)
/* Flutter */
Color(0xFF47ACDA)
/* Python / OpenCV (BGR) */
(218, 172, 71)
/* Python / PIL (RGB) */
(71, 172, 218)
/* Java AWT */
new Color(71, 172, 218)
/* .NET */
Color.FromArgb(255, 71, 172, 218)
/* OpenGL / Unity (0–1) */
(0.2784f, 0.6745f, 0.8549f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{71,172,218}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #47acda 85%, white);
border-color: color-mix(in oklab, #47acda 40%, transparent);
/* theme-aware in one line */
color: light-dark(#15506A, #D3E6EE);
/* relative colour syntax */
--hover: hsl(from #47acda 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: #E8F3F8;
  --brand-200: #CAE5F1;
  --brand-300: #A2D5EC;
  --brand-400: #73C0E3;
  --brand-500: #47acda;
  --brand-600: #2999CC;
  --brand-700: #227FAA;
  --brand-800: #1B6688;
  --brand-900: #184B63;
  --brand-950: #0F2F3E;
  --brand: #47acda;
  --brand-ink: #000000;
  --brand-surface: #F4F8FA;
  --brand-border: #C0DFED;
  --brand-hover: #2A9ED3;
  --brand-pressed: #2488B5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141F24;
    --brand-ink: #D3E6EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F3F9FB',
        100: '#E8F3F8',
        200: '#CAE5F1',
        300: '#A2D5EC',
        400: '#73C0E3',
        500: '#47acda',
        600: '#2999CC',
        700: '#227FAA',
        800: '#1B6688',
        900: '#184B63',
        950: '#0F2F3E',
        DEFAULT: '#47acda',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F3F9FB,
  '100': #E8F3F8,
  '200': #CAE5F1,
  '300': #A2D5EC,
  '400': #73C0E3,
  '500': #47acda,
  '600': #2999CC,
  '700': #227FAA,
  '800': #1B6688,
  '900': #184B63,
  '950': #0F2F3E,
);
$brand-base: #47acda;
$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": "#E8F3F8", "$type": "color" },
      "200": { "$value": "#CAE5F1", "$type": "color" },
      "300": { "$value": "#A2D5EC", "$type": "color" },
      "400": { "$value": "#73C0E3", "$type": "color" },
      "500": { "$value": "#47acda", "$type": "color" },
      "600": { "$value": "#2999CC", "$type": "color" },
      "700": { "$value": "#227FAA", "$type": "color" },
      "800": { "$value": "#1B6688", "$type": "color" },
      "900": { "$value": "#184B63", "$type": "color" },
      "950": { "$value": "#0F2F3E", "$type": "color" }
    },
    "brandInk": { "$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 #47acda · 8.18:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.57:1
AA fail · AA large fail · AAA fail
Aa
Black text · 8.18:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #47acda as text scores 2.57:1 on white and 8.18:1 on black.
Best tinted ink on it, if plain black or white feels flat: #15506A at 3.43:1.

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
#227EA9 · 4.54:1
AA on white−17% L
#227EA9
The quick fox
#195F7E · 7.05:1
AAA on white−27% L
#195F7E
The quick fox
#47acda · 8.18:1
AA on blackalready passes
#47acda
The quick fox
#47acda · 8.18:1
AAA on blackalready passes
#47acda

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #2A9ED3 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
#47acda on white: 2.57:1
AA ✗ fail · AA-large · AAA
Aa
#47acda on black: 8.18:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #47acda as text on that neutral, and that neutral as text on #47acda.

NeutralRatioBoth directions
White2.57:1AaAa
Slate 502.45:1AaAa
Slate 1002.34:1AaAa
Slate 2002.08:1AaAa
Slate 3001.73:1AaAa
Slate 4001.00:1AaAa
Slate 5001.85:1AaAa
Slate 6002.95:1AaAa
Slate 7004.03:1AaAa
Slate 8005.70:1AaAa
Slate 9006.96:1AaAa
Black8.18:1AaAa
Colour vision deficiency
true color
protanopia · #95AADC
deuteranopia · #819BD9
tritanopia · #00B9BB

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. #47acda 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
#E8F3F8
#CAE5F1
#A2D5EC
#73C0E3
#47acda
#2999CC
#227FAA
#1B6688
#184B63
#0F2F3E
Base = 500Lightest = 50 · #F3F9FBDarkest = 950 · #0F2F3EText 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 0.029 231.3);
  --brand-100: oklch(0.94 0.046 231.3);
  --brand-200: oklch(0.88 0.069 231.3);
  --brand-300: oklch(0.80 0.089 231.3);
  --brand-400: oklch(0.72 0.105 231.3);
  --brand-500: oklch(0.64 0.114 231.3);
  --brand-600: oklch(0.56 0.114 231.3);
  --brand-700: oklch(0.48 0.107 231.3);
  --brand-800: oklch(0.40 0.096 231.3);
  --brand-900: oklch(0.32 0.080 231.3);
  --brand-950: oklch(0.24 0.063 231.3);
}

Colors that work with #47acda

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#F4F8FA
Tinted page background
Border#C0DFED
Hairlines and dividers
Muted text#4B829B
Captions on the surface
Accent#DE4D43
Second voice, not a rival
Dark variant#15506A
Hover, pressed, headers
Light variant#EAF5FB
Selected rows, tints
Dark surface#141F24
Dark-mode background
Hover#2A9ED3
One step down in lightness
Pressed#2488B5
Two steps down
Disabled#BDCDD5
Chroma pulled out
Focus ring#4EB7E7
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 #47acda

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 #15506A
Safe as a 1px border on white
No — use #2A9ED3

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
  • Weight43/100
  • 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#DA7547
Analogous left#47DABF
Analogous right#4763DA
Split-complement 1#DA4763
Split-complement 2#DABF47
Triadic 1#DA47AC
Triadic 2#ACDA47
Tetradic#BF47DA
On the wheel
Base+30°−30°+120°+240°+180°199°

#47acda sits at 199°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red27.8%
Green67.5%
Blue85.5%
R · 0–255
71
0x47
G · 0–255
172
0xac
B · 0–255
218
0xda

CMYK percentages

Cyan67.4%
Magenta21.1%
Yellow0.0%
Key (black)14.5%

Total ink coverage is 103%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#47acda text on a black background

contrast 8.18:1

Card sample

#47acda text on a white background

contrast 2.57:1

Card sample

#47acda on grey

2.34:1

#47acda on its own surface

2.40:1

#47acda on its dark surface

6.54:1

CSS3 live lab

Text font color

The quick brown fox

color: #47acda;
Background color
Panel with #47acda background
background-color: #47acda;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #47acda;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(71, 172, 218, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(71, 172, 218, 0.45);
Border & gradient
Gradient panel
border: 3px solid #47acda;
background: linear-gradient(135deg, #47acda, #474ADA);
Gradient text

Gradient headline

background: linear-gradient(90deg, #47acda, #6947DA);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #47acda;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #47acda;
caret-color: #47acda;
Left rule
Pull quote or callout
border-left: 4px solid #47acda;
Ring + tint
Selected chip
background: #EAF5FB;
box-shadow: inset 0 0 0 2px #47acda;
Conic badge
68%
background: conic-gradient(#47acda 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #47acda 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(71, 172, 218, 0.5)
rgb(71 172 218 / 50%)
#47acda80
hsl(199 67% 57% / 50%)
color-mix(in srgb, #47acda 50%, transparent)
Alpha8-digit hexFlat on white
10%#47acda1a#EDF7FB
20%#47acda33#DAEEF8
40%#47acda66#B5DEF0
60%#47acda99#91CDE9
80%#47acdacc#6CBDE1

Gradients from #47acda

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, #7AC3E4, #47acda 45%, #15506A);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #47acda, #382ED5);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #47acda, #DA7547);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #94CFE9 0%, #47acda 45%, #15506A 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F8FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #72E3C4 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #616EDF 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #15506A 0%, transparent 65%), #47acda;

Monochromatic scale

Palettes built from #47acda

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.

#47acda 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 8.18:1.

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.

#47acda, answered

What color is #47acda?

#47acda is a balanced vivid cyan, closest to Deep Sky Blue (ΔE2000 6). It sits at 199° on the hue wheel with 67% saturation and 57% lightness, which reads as cool.

What is the RGB value of #47acda?

rgb(71, 172, 218) — 71 red, 172 green and 218 blue out of 255, or 27.8% / 67.5% / 85.5% by channel.

What is #47acda in HSL and HSV?

hsl(199, 67%, 57%) and hsv(199, 67%, 85%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #47acda a light or a dark color?

It is a mid-tone. Relative luminance is 0.3591 and perceived brightness is 61%, so black text on it reaches 8.18:1.

Should I use black or white text on #47acda?

Black. It scores 8.18:1 against #47acda, versus 2.57:1 for white — AAA at any size.

Is #47acda accessible on a white background?

#47acda on white scores 2.57:1, which fails WCAG AA at every size. Darken it to #227EA9 to reach 4.5:1, or #195F7E for 7:1.

What is the complementary color of #47acda?

#DA7547 sits directly opposite on the wheel. Softer options are the split-complements #DA4763 and #DABF47, which give the same contrast with far less vibration.

What colors go well with #47acda?

For interface work: #F4F8FA as the surface, #C0DFED for borders, #4B829B for secondary text, #DE4D43 as an accent and #15506A for hover and pressed states. For a palette, the analogous pair #47DABF and #4763DA stays calm, while #DA7547 is the loudest partner.

What is #47acda in CMYK for printing?

cmyk(67%, 21%, 0%, 15%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #47acda warm or cool?

Cool — it scores 95 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #47DAD2; nudged cooler, #459ADC.

Which Tailwind color is closest to #47acda?

The sky family — its 500 step is #0ea5e9, ΔE2000 4.8 away. That is a visible difference, so define #47acda as a custom token rather than reaching for the built-in.

How do I use #47acda in Tailwind CSS?

Inline it as an arbitrary value with bg-[#47acda] or text-[#47acda], 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 #47acda with 50% opacity?

rgba(71, 172, 218, 0.5), or #47acda80 in eight-digit hex. Over white that composites to #A3D6ED; over black, #24566D.

Is #47acda a web-safe color?

No. The nearest web-safe colour is #3399CC, ΔE2000 6 away. The palette only matters for legacy displays and some email clients now.

What does the color #47acda 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 #47acda?

The safest is same-hue elevation: linear-gradient(135deg, #7AC3E4, #47acda 45%, #15506A). For more colour, a short hue run to #382ED5 keeps it rich without turning muddy.

Work with #47acda in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #47acda at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.