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cyan · cool

#4adbbb

a balanced, vivid cyan · cool · closest name: Medium Aqua Marine

Token name suggestion: Atlas Teal

RGB
74, 219, 187
HSL
167°, 67%, 58%
CMYK
66, 0, 15, 14
Luminance
0.5571

#4adbbb is a balanced vivid cyan, 167° on the wheel and 82/100 on the cool side. Put black text on it (12.14:1). As text it scores 1.73:1 on white — use #1A826B instead. Nearest name is Medium Aqua Marine, nearest Tailwind family is teal.

hsl(167 67% 58%)rgb(74 219 187)Base step 500AAA inkCool

At a glance

Every number on this page in one read: what #4adbbb is made of, how bright it looks, and which way it leans.

Hex
#4adbbb
Hue
167°
cyan
Saturation
67%
vivid
Lightness
58%
balanced
Brightness
86%
HSV value
Perceived
72%
weighted brightness
Luminance
0.5571
WCAG relative
Temperature
Cool
82/100 cool
Color family
Cyan
Tone
Vivid
Best ink
Black
12.14:1
Closest name
Medium Aqua Marine
ΔE2000 4.6
Chroma
46.1
LCH, 0–130ish
OKLCH L
0.806
perceptual lightness
Tailwind
teal
500 · ΔE 9.8
Web-safe
#33CCCC
nearest of 216
Where it sits
Hue167° of 360°
Saturation67%
Lightness58%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #4adbbb.

Temperature
Warm ← → Cool82% 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%
Green91%
Blue6%

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

Every format

HEX#4adbbb
HEX (8-digit)#4adbbbff
RGBrgb(74, 219, 187)
RGBArgba(74, 219, 187, 1)
HSLhsl(167, 67%, 58%)
HSV / HSBhsv(167, 66%, 86%)
HWBhwb(167 29% 14%)
CMYKcmyk(66%, 0%, 15%, 14%)
LABlab(79.4 -45.9 4.5)
LCHlch(79.4 46.1 174.4)
OKLCHoklch(0.806 0.131 175.1)
XYZ (D65)xyz(37.12, 55.70, 55.80)
Decimal4905915
Display P3color(display-p3 0.290 0.859 0.733)
Web-safe#33CCCC

Copy-ready code

every platformclick to select
/* CSS */
color: #4adbbb;
background-color: #4adbbb;
/* CSS custom property */
--brand: #4adbbb;
/* Tailwind (arbitrary) */
class="text-[#4adbbb] bg-[#4adbbb]"
/* SCSS */
$brand: #4adbbb;
/* SwiftUI */
Color(red: 0.290, green: 0.859, blue: 0.733)
/* UIKit */
UIColor(red: 0.290, green: 0.859, blue: 0.733, alpha: 1)
/* Android XML */
<color name="brand">#4ADBBB</color>
/* Android Compose */
Color(0xFF4ADBBB)
/* Flutter */
Color(0xFF4ADBBB)
/* Python / OpenCV (BGR) */
(187, 219, 74)
/* Python / PIL (RGB) */
(74, 219, 187)
/* Java AWT */
new Color(74, 219, 187)
/* .NET */
Color.FromArgb(255, 74, 219, 187)
/* OpenGL / Unity (0–1) */
(0.2902f, 0.8588f, 0.7333f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{74,219,187}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #4adbbb 85%, white);
border-color: color-mix(in oklab, #4adbbb 40%, transparent);
/* theme-aware in one line */
color: light-dark(#156A58, #D3EEE8);
/* relative colour syntax */
--hover: hsl(from #4adbbb 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: #F3FBFA;
  --brand-100: #E8F8F4;
  --brand-200: #CAF1E9;
  --brand-300: #A1ECDC;
  --brand-400: #73E3CA;
  --brand-500: #4adbbb;
  --brand-600: #29CCA8;
  --brand-700: #22AA8C;
  --brand-800: #1B8870;
  --brand-900: #186352;
  --brand-950: #0F3E33;
  --brand: #4adbbb;
  --brand-ink: #000000;
  --brand-surface: #F4FAF9;
  --brand-border: #C0EDE3;
  --brand-hover: #2CD5B0;
  --brand-pressed: #25B998;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142421;
    --brand-ink: #D3EEE8;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F3FBFA',
        100: '#E8F8F4',
        200: '#CAF1E9',
        300: '#A1ECDC',
        400: '#73E3CA',
        500: '#4adbbb',
        600: '#29CCA8',
        700: '#22AA8C',
        800: '#1B8870',
        900: '#186352',
        950: '#0F3E33',
        DEFAULT: '#4adbbb',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F3FBFA,
  '100': #E8F8F4,
  '200': #CAF1E9,
  '300': #A1ECDC,
  '400': #73E3CA,
  '500': #4adbbb,
  '600': #29CCA8,
  '700': #22AA8C,
  '800': #1B8870,
  '900': #186352,
  '950': #0F3E33,
);
$brand-base: #4adbbb;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F3FBFA", "$type": "color" },
      "100": { "$value": "#E8F8F4", "$type": "color" },
      "200": { "$value": "#CAF1E9", "$type": "color" },
      "300": { "$value": "#A1ECDC", "$type": "color" },
      "400": { "$value": "#73E3CA", "$type": "color" },
      "500": { "$value": "#4adbbb", "$type": "color" },
      "600": { "$value": "#29CCA8", "$type": "color" },
      "700": { "$value": "#22AA8C", "$type": "color" },
      "800": { "$value": "#1B8870", "$type": "color" },
      "900": { "$value": "#186352", "$type": "color" },
      "950": { "$value": "#0F3E33", "$type": "color" }
    },
    "brandInk": { "$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 #4adbbb · 12.14:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.73:1
AA fail · AA large fail · AAA fail
Aa
Black text · 12.14:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #4adbbb as text scores 1.73:1 on white and 12.14:1 on black.
Best tinted ink on it, if plain black or white feels flat: #156A58 at 3.75:1.

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
#1A826B · 4.72:1
AA on white−27% L
#1A826B
The quick fox
#146452 · 7.06:1
AAA on white−34% L
#146452
The quick fox
#4adbbb · 12.14:1
AA on blackalready passes
#4adbbb
The quick fox
#4adbbb · 12.14:1
AAA on blackalready passes
#4adbbb

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #21A487 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
#4adbbb on white: 1.73:1
AA ✗ fail · AA-large · AAA
Aa
#4adbbb on black: 12.14:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #4adbbb as text on that neutral, and that neutral as text on #4adbbb.

NeutralRatioBoth directions
White1.73:1AaAa
Slate 501.65:1AaAa
Slate 1001.58:1AaAa
Slate 2001.40:1AaAa
Slate 3001.16:1AaAa
Slate 4001.48:1AaAa
Slate 5002.75:1AaAa
Slate 6004.38:1AaAa
Slate 7005.99:1AaAa
Slate 8008.46:1AaAa
Slate 90010.32:1AaAa
Black12.14:1AaAa
Colour vision deficiency
true color
protanopia · #D3CEBA
deuteranopia · #BFBFBD
tritanopia · #00DED2

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. #4adbbb 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.

#F3FBFA
#E8F8F4
#CAF1E9
#A1ECDC
#73E3CA
#4adbbb
#29CCA8
#22AA8C
#1B8870
#186352
#0F3E33
Base = 500Lightest = 50 · #F3FBFADarkest = 950 · #0F3E33Text 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 0.033 175.1);
  --brand-100: oklch(0.94 0.052 175.1);
  --brand-200: oklch(0.88 0.079 175.1);
  --brand-300: oklch(0.80 0.102 175.1);
  --brand-400: oklch(0.72 0.121 175.1);
  --brand-500: oklch(0.64 0.131 175.1);
  --brand-600: oklch(0.56 0.131 175.1);
  --brand-700: oklch(0.48 0.123 175.1);
  --brand-800: oklch(0.40 0.110 175.1);
  --brand-900: oklch(0.32 0.092 175.1);
  --brand-950: oklch(0.24 0.072 175.1);
}

Colors that work with #4adbbb

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#F4FAF9
Tinted page background
Border#C0EDE3
Hairlines and dividers
Muted text#4B9B89
Captions on the surface
Accent#DF468E
Second voice, not a rival
Dark variant#156A58
Hover, pressed, headers
Light variant#EAFBF7
Selected rows, tints
Dark surface#142421
Dark-mode background
Hover#2CD5B0
One step down in lightness
Pressed#25B998
Two steps down
Disabled#BFD6D1
Chroma pulled out
Focus ring#51E8C7
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 #4adbbb

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 #156A58
Safe as a 1px border on white
No — use #21A487

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#DB4A6A
Analogous left#4ADB73
Analogous right#4AB2DB
Split-complement 1#DB4AB2
Split-complement 2#DB734A
Triadic 1#BB4ADB
Triadic 2#DBBB4A
Tetradic#734ADB
On the wheel
Base+30°−30°+120°+240°+180°167°

#4adbbb sits at 167°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red29.0%
Green85.9%
Blue73.3%
R · 0–255
74
0x4a
G · 0–255
219
0xdb
B · 0–255
187
0xbb

CMYK percentages

Cyan66.2%
Magenta0.0%
Yellow14.6%
Key (black)14.1%

Total ink coverage is 95%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#4adbbb text on a black background

contrast 12.14:1

Card sample

#4adbbb text on a white background

contrast 1.73:1

Card sample

#4adbbb on grey

1.58:1

#4adbbb on its own surface

1.64:1

#4adbbb on its dark surface

9.31:1

CSS3 live lab

Text font color

The quick brown fox

color: #4adbbb;
Background color
Panel with #4adbbb background
background-color: #4adbbb;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #4adbbb;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(74, 219, 187, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(74, 219, 187, 0.45);
Border & gradient
Gradient panel
border: 3px solid #4adbbb;
background: linear-gradient(135deg, #4adbbb, #4A9ADB);
Gradient text

Gradient headline

background: linear-gradient(90deg, #4adbbb, #4A76DB);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #4adbbb;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #4adbbb;
caret-color: #4adbbb;
Left rule
Pull quote or callout
border-left: 4px solid #4adbbb;
Ring + tint
Selected chip
background: #EAFBF7;
box-shadow: inset 0 0 0 2px #4adbbb;
Conic badge
68%
background: conic-gradient(#4adbbb 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #4adbbb 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(74, 219, 187, 0.5)
rgb(74 219 187 / 50%)
#4adbbb80
hsl(167 67% 58% / 50%)
color-mix(in srgb, #4adbbb 50%, transparent)
Alpha8-digit hexFlat on white
10%#4adbbb1a#EDFBF8
20%#4adbbb33#DBF8F1
40%#4adbbb66#B7F1E4
60%#4adbbb99#92E9D6
80%#4adbbbcc#6EE2C9

Gradients from #4adbbb

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, #7DE5CE, #4adbbb 45%, #156A58);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #4adbbb, #317ED6);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #4adbbb, #DB4A6A);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #97EAD8 0%, #4adbbb 45%, #156A58 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF9, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #75E38B 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #64B3E0 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #156A58 0%, transparent 65%), #4adbbb;

Monochromatic scale

Palettes built from #4adbbb

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.

#4adbbb 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 12.14:1.

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.

#4adbbb, answered

What color is #4adbbb?

#4adbbb is a balanced vivid cyan, closest to Medium Aqua Marine (ΔE2000 4.6). It sits at 167° on the hue wheel with 67% saturation and 58% lightness, which reads as cool.

What is the RGB value of #4adbbb?

rgb(74, 219, 187) — 74 red, 219 green and 187 blue out of 255, or 29% / 85.9% / 73.3% by channel.

What is #4adbbb in HSL and HSV?

hsl(167, 67%, 58%) and hsv(167, 66%, 86%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #4adbbb a light or a dark color?

It is a light color. Relative luminance is 0.5571 and perceived brightness is 72%, so black text on it reaches 12.14:1.

Should I use black or white text on #4adbbb?

Black. It scores 12.14:1 against #4adbbb, versus 1.73:1 for white — AAA at any size.

Is #4adbbb accessible on a white background?

#4adbbb on white scores 1.73:1, which fails WCAG AA at every size. Darken it to #1A826B to reach 4.5:1, or #146452 for 7:1.

What is the complementary color of #4adbbb?

#DB4A6A sits directly opposite on the wheel. Softer options are the split-complements #DB4AB2 and #DB734A, which give the same contrast with far less vibration.

What colors go well with #4adbbb?

For interface work: #F4FAF9 as the surface, #C0EDE3 for borders, #4B9B89 for secondary text, #DF468E as an accent and #156A58 for hover and pressed states. For a palette, the analogous pair #4ADB73 and #4AB2DB stays calm, while #DB4A6A is the loudest partner.

What is #4adbbb in CMYK for printing?

cmyk(66%, 0%, 15%, 14%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #4adbbb warm or cool?

Cool — it scores 82 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #4ADB86; nudged cooler, #48C7DD.

Which Tailwind color is closest to #4adbbb?

The teal family — its 500 step is #14b8a6, ΔE2000 9.8 away. That is a visible difference, so define #4adbbb as a custom token rather than reaching for the built-in.

How do I use #4adbbb in Tailwind CSS?

Inline it as an arbitrary value with bg-[#4adbbb] or text-[#4adbbb], 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 #4adbbb with 50% opacity?

rgba(74, 219, 187, 0.5), or #4adbbb80 in eight-digit hex. Over white that composites to #A5EDDD; over black, #256E5E.

Is #4adbbb a web-safe color?

No. The nearest web-safe colour is #33CCCC, ΔE2000 10.9 away. The palette only matters for legacy displays and some email clients now.

What does the color #4adbbb 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 #4adbbb?

The safest is same-hue elevation: linear-gradient(135deg, #7DE5CE, #4adbbb 45%, #156A58). For more colour, a short hue run to #317ED6 keeps it rich without turning muddy.

Work with #4adbbb in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #4adbbb at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.