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cyan · cool

#5ac2cc

a balanced, vivid cyan · cool · closest name: Dark Turquoise

Token name suggestion: True Reef

RGB
90, 194, 204
HSL
185°, 53%, 58%
CMYK
56, 5, 0, 20
Luminance
0.4512

#5ac2cc is a balanced vivid cyan, 185° on the wheel and 90/100 on the cool side. Put black text on it (10.02:1). As text it scores 2.10:1 on white — use #2B828B instead. Nearest name is Dark Turquoise, nearest Tailwind family is cyan.

hsl(185 53% 58%)rgb(90 194 204)Base step 500AAA inkCool

At a glance

Every number on this page in one read: what #5ac2cc is made of, how bright it looks, and which way it leans.

Hex
#5ac2cc
Hue
185°
cyan
Saturation
53%
vivid
Lightness
58%
balanced
Brightness
80%
HSV value
Perceived
67%
weighted brightness
Luminance
0.4512
WCAG relative
Temperature
Cool
90/100 cool
Color family
Cyan
Tone
Vivid
Best ink
Black
10.02:1
Closest name
Dark Turquoise
ΔE2000 5.9
Chroma
30.6
LCH, 0–130ish
OKLCH L
0.757
perceptual lightness
Tailwind
cyan
500 · ΔE 7.2
Web-safe
#66CCCC
nearest of 216
Where it sits
Hue185° of 360°
Saturation53%
Lightness58%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #5ac2cc.

Temperature
Warm ← → Cool90% 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
Red5%
Green86%
Blue10%

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

Every format

HEX#5ac2cc
HEX (8-digit)#5ac2ccff
RGBrgb(90, 194, 204)
RGBArgba(90, 194, 204, 1)
HSLhsl(185, 53%, 58%)
HSV / HSBhsv(185, 56%, 80%)
HWBhwb(185 35% 20%)
CMYKcmyk(56%, 5%, 0%, 20%)
LABlab(73.0 -27.1 -14.2)
LCHlch(73.0 30.6 207.5)
OKLCHoklch(0.757 0.097 203.8)
XYZ (D65)xyz(34.40, 45.11, 64.01)
Decimal5948108
Display P3color(display-p3 0.353 0.761 0.800)
Web-safe#66CCCC

Copy-ready code

every platformclick to select
/* CSS */
color: #5ac2cc;
background-color: #5ac2cc;
/* CSS custom property */
--brand: #5ac2cc;
/* Tailwind (arbitrary) */
class="text-[#5ac2cc] bg-[#5ac2cc]"
/* SCSS */
$brand: #5ac2cc;
/* SwiftUI */
Color(red: 0.353, green: 0.761, blue: 0.800)
/* UIKit */
UIColor(red: 0.353, green: 0.761, blue: 0.800, alpha: 1)
/* Android XML */
<color name="brand">#5AC2CC</color>
/* Android Compose */
Color(0xFF5AC2CC)
/* Flutter */
Color(0xFF5AC2CC)
/* Python / OpenCV (BGR) */
(204, 194, 90)
/* Python / PIL (RGB) */
(90, 194, 204)
/* Java AWT */
new Color(90, 194, 204)
/* .NET */
Color.FromArgb(255, 90, 194, 204)
/* OpenGL / Unity (0–1) */
(0.3529f, 0.7608f, 0.8000f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{90,194,204}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #5ac2cc 85%, white);
border-color: color-mix(in oklab, #5ac2cc 40%, transparent);
/* theme-aware in one line */
color: light-dark(#1E5B61, #D3ECEE);
/* relative colour syntax */
--hover: hsl(from #5ac2cc 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: #F4FAFB;
  --brand-100: #E9F5F6;
  --brand-200: #CEEBED;
  --brand-300: #A9DFE5;
  --brand-400: #7ECFD7;
  --brand-500: #5ac2cc;
  --brand-600: #3AB0BB;
  --brand-700: #30929C;
  --brand-800: #27757D;
  --brand-900: #1F565B;
  --brand-950: #143639;
  --brand: #5ac2cc;
  --brand-ink: #000000;
  --brand-surface: #F4FAFA;
  --brand-border: #C1E8EC;
  --brand-hover: #3FB8C4;
  --brand-pressed: #34A0AA;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142324;
    --brand-ink: #D3ECEE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4FAFB',
        100: '#E9F5F6',
        200: '#CEEBED',
        300: '#A9DFE5',
        400: '#7ECFD7',
        500: '#5ac2cc',
        600: '#3AB0BB',
        700: '#30929C',
        800: '#27757D',
        900: '#1F565B',
        950: '#143639',
        DEFAULT: '#5ac2cc',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4FAFB,
  '100': #E9F5F6,
  '200': #CEEBED,
  '300': #A9DFE5,
  '400': #7ECFD7,
  '500': #5ac2cc,
  '600': #3AB0BB,
  '700': #30929C,
  '800': #27757D,
  '900': #1F565B,
  '950': #143639,
);
$brand-base: #5ac2cc;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4FAFB", "$type": "color" },
      "100": { "$value": "#E9F5F6", "$type": "color" },
      "200": { "$value": "#CEEBED", "$type": "color" },
      "300": { "$value": "#A9DFE5", "$type": "color" },
      "400": { "$value": "#7ECFD7", "$type": "color" },
      "500": { "$value": "#5ac2cc", "$type": "color" },
      "600": { "$value": "#3AB0BB", "$type": "color" },
      "700": { "$value": "#30929C", "$type": "color" },
      "800": { "$value": "#27757D", "$type": "color" },
      "900": { "$value": "#1F565B", "$type": "color" },
      "950": { "$value": "#143639", "$type": "color" }
    },
    "brandInk": { "$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 #5ac2cc · 10.02:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.10:1
AA fail · AA large fail · AAA fail
Aa
Black text · 10.02:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #5ac2cc as text scores 2.10:1 on white and 10.02:1 on black.
Best tinted ink on it, if plain black or white feels flat: #1E5B61 at 3.68:1.

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
#2B828B · 4.50:1
AA on white−22% L
#2B828B
The quick fox
#206168 · 7.07:1
AAA on white−31% L
#206168
The quick fox
#5ac2cc · 10.02:1
AA on blackalready passes
#5ac2cc
The quick fox
#5ac2cc · 10.02:1
AAA on blackalready passes
#5ac2cc

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #36A3AE 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
#5ac2cc on white: 2.10:1
AA ✗ fail · AA-large · AAA
Aa
#5ac2cc on black: 10.02:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #5ac2cc as text on that neutral, and that neutral as text on #5ac2cc.

NeutralRatioBoth directions
White2.10:1AaAa
Slate 502.00:1AaAa
Slate 1001.91:1AaAa
Slate 2001.70:1AaAa
Slate 3001.41:1AaAa
Slate 4001.22:1AaAa
Slate 5002.27:1AaAa
Slate 6003.62:1AaAa
Slate 7004.94:1AaAa
Slate 8006.98:1AaAa
Slate 9008.52:1AaAa
Black10.02:1AaAa
Colour vision deficiency
true color
protanopia · #B5BBCD
deuteranopia · #A3ADCC
tritanopia · #00C9C5

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. #5ac2cc 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.

#F4FAFB
#E9F5F6
#CEEBED
#A9DFE5
#7ECFD7
#5ac2cc
#3AB0BB
#30929C
#27757D
#1F565B
#143639
Base = 500Lightest = 50 · #F4FAFBDarkest = 950 · #143639Text 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 0.024 203.8);
  --brand-100: oklch(0.94 0.039 203.8);
  --brand-200: oklch(0.88 0.058 203.8);
  --brand-300: oklch(0.80 0.076 203.8);
  --brand-400: oklch(0.72 0.089 203.8);
  --brand-500: oklch(0.64 0.097 203.8);
  --brand-600: oklch(0.56 0.097 203.8);
  --brand-700: oklch(0.48 0.091 203.8);
  --brand-800: oklch(0.40 0.081 203.8);
  --brand-900: oklch(0.32 0.068 203.8);
  --brand-950: oklch(0.24 0.053 203.8);
}

Colors that work with #5ac2cc

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#C1E8EC
Hairlines and dividers
Muted text#4B949B
Captions on the surface
Accent#D05569
Second voice, not a rival
Dark variant#1E5B61
Hover, pressed, headers
Light variant#ECF8F9
Selected rows, tints
Dark surface#142324
Dark-mode background
Hover#3FB8C4
One step down in lightness
Pressed#34A0AA
Two steps down
Disabled#C0D4D6
Chroma pulled out
Focus ring#60D0DB
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 #5ac2cc

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 #1E5B61
Safe as a 1px border on white
No — use #36A3AE

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
  • Weight42/100
  • 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#CC645A
Analogous left#5ACC9D
Analogous right#5A89CC
Split-complement 1#CC5A89
Split-complement 2#CC9D5A
Triadic 1#CC5AC2
Triadic 2#C2CC5A
Tetradic#9D5ACC
On the wheel
Base+30°−30°+120°+240°+180°185°

#5ac2cc sits at 185°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red35.3%
Green76.1%
Blue80.0%
R · 0–255
90
0x5a
G · 0–255
194
0xc2
B · 0–255
204
0xcc

CMYK percentages

Cyan55.9%
Magenta4.9%
Yellow0.0%
Key (black)20.0%

Total ink coverage is 81%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#5ac2cc text on a black background

contrast 10.02:1

Card sample

#5ac2cc text on a white background

contrast 2.10:1

Card sample

#5ac2cc on grey

1.91:1

#5ac2cc on its own surface

1.99:1

#5ac2cc on its dark surface

7.74:1

CSS3 live lab

Text font color

The quick brown fox

color: #5ac2cc;
Background color
Panel with #5ac2cc background
background-color: #5ac2cc;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #5ac2cc;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(90, 194, 204, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(90, 194, 204, 0.45);
Border & gradient
Gradient panel
border: 3px solid #5ac2cc;
background: linear-gradient(135deg, #5ac2cc, #5A76CC);
Gradient text

Gradient headline

background: linear-gradient(90deg, #5ac2cc, #5A5ACC);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #5ac2cc;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #5ac2cc;
caret-color: #5ac2cc;
Left rule
Pull quote or callout
border-left: 4px solid #5ac2cc;
Ring + tint
Selected chip
background: #ECF8F9;
box-shadow: inset 0 0 0 2px #5ac2cc;
Conic badge
68%
background: conic-gradient(#5ac2cc 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #5ac2cc 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(90, 194, 204, 0.5)
rgb(90 194 204 / 50%)
#5ac2cc80
hsl(185 53% 58% / 50%)
color-mix(in srgb, #5ac2cc 50%, transparent)
Alpha8-digit hexFlat on white
10%#5ac2cc1a#EFF9FA
20%#5ac2cc33#DEF3F5
40%#5ac2cc66#BDE7EB
60%#5ac2cc99#9CDAE0
80%#5ac2cccc#7BCED6

Gradients from #5ac2cc

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, #89D3DA, #5ac2cc 45%, #1E5B61);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #5ac2cc, #4257C5);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #5ac2cc, #CC645A);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #A0DCE2 0%, #5ac2cc 45%, #1E5B61 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%, #81D8AD 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #7191D3 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #1E5B61 0%, transparent 65%), #5ac2cc;

Monochromatic scale

Palettes built from #5ac2cc

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.

#5ac2cc 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 10.02:1.

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.

#5ac2cc, answered

What color is #5ac2cc?

#5ac2cc is a balanced vivid cyan, closest to Dark Turquoise (ΔE2000 5.9). It sits at 185° on the hue wheel with 53% saturation and 58% lightness, which reads as cool.

What is the RGB value of #5ac2cc?

rgb(90, 194, 204) — 90 red, 194 green and 204 blue out of 255, or 35.3% / 76.1% / 80% by channel.

What is #5ac2cc in HSL and HSV?

hsl(185, 53%, 58%) and hsv(185, 56%, 80%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #5ac2cc a light or a dark color?

It is a mid-tone. Relative luminance is 0.4512 and perceived brightness is 67%, so black text on it reaches 10.02:1.

Should I use black or white text on #5ac2cc?

Black. It scores 10.02:1 against #5ac2cc, versus 2.10:1 for white — AAA at any size.

Is #5ac2cc accessible on a white background?

#5ac2cc on white scores 2.10:1, which fails WCAG AA at every size. Darken it to #2B828B to reach 4.5:1, or #206168 for 7:1.

What is the complementary color of #5ac2cc?

#CC645A sits directly opposite on the wheel. Softer options are the split-complements #CC5A89 and #CC9D5A, which give the same contrast with far less vibration.

What colors go well with #5ac2cc?

For interface work: #F4FAFA as the surface, #C1E8EC for borders, #4B949B for secondary text, #D05569 as an accent and #1E5B61 for hover and pressed states. For a palette, the analogous pair #5ACC9D and #5A89CC stays calm, while #CC645A is the loudest partner.

What is #5ac2cc in CMYK for printing?

cmyk(56%, 5%, 0%, 20%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #5ac2cc warm or cool?

Cool — it scores 90 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #5ACCAC; nudged cooler, #58A3CE.

Which Tailwind color is closest to #5ac2cc?

The cyan family — its 500 step is #06b6d4, ΔE2000 7.2 away. That is a visible difference, so define #5ac2cc as a custom token rather than reaching for the built-in.

How do I use #5ac2cc in Tailwind CSS?

Inline it as an arbitrary value with bg-[#5ac2cc] or text-[#5ac2cc], 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 #5ac2cc with 50% opacity?

rgba(90, 194, 204, 0.5), or #5ac2cc80 in eight-digit hex. Over white that composites to #ADE1E6; over black, #2D6166.

Is #5ac2cc a web-safe color?

No. The nearest web-safe colour is #66CCCC, ΔE2000 4.5 away. The palette only matters for legacy displays and some email clients now.

What does the color #5ac2cc 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 #5ac2cc?

The safest is same-hue elevation: linear-gradient(135deg, #89D3DA, #5ac2cc 45%, #1E5B61). For more colour, a short hue run to #4257C5 keeps it rich without turning muddy.

Work with #5ac2cc in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #5ac2cc at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.