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green · cool

#4defad

a balanced, electric green · cool · closest name: Medium Spring Green

Token name suggestion: Studio Basil

RGB
77, 239, 173
HSL
156°, 84%, 62%
CMYK
68, 0, 28, 6
Luminance
0.6633

#4defad is a balanced electric green, 156° on the wheel and 77/100 on the cool side. Put black text on it (14.27:1). As text it scores 1.47:1 on white — use #0C8855 instead. Nearest name is Medium Spring Green, nearest Tailwind family is green.

hsl(156 84% 62%)rgb(77 239 173)Base step 400AAA inkCool

At a glance

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

Hex
#4defad
Hue
156°
green
Saturation
84%
electric
Lightness
62%
balanced
Brightness
94%
HSV value
Perceived
77%
weighted brightness
Luminance
0.6633
WCAG relative
Temperature
Cool
77/100 cool
Color family
Green
Tone
Electric
Best ink
Black
14.27:1
Closest name
Medium Spring Green
ΔE2000 5.3
Chroma
60.2
LCH, 0–130ish
OKLCH L
0.852
perceptual lightness
Tailwind
green
500 · ΔE 13
Web-safe
#66FF99
nearest of 216
Where it sits
Hue156° of 360°
Saturation84%
Lightness62%
Saturation × lightness field

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

Temperature
Warm ← → Cool77% 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
Red2%
Green93%
Blue5%

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

Every format

HEX#4defad
HEX (8-digit)#4defadff
RGBrgb(77, 239, 173)
RGBArgba(77, 239, 173, 1)
HSLhsl(156, 84%, 62%)
HSV / HSBhsv(156, 68%, 94%)
HWBhwb(156 30% 6%)
CMYKcmyk(68%, 0%, 28%, 6%)
LABlab(85.2 -56.8 20.0)
LCHlch(85.2 60.2 160.6)
OKLCHoklch(0.852 0.164 161.9)
XYZ (D65)xyz(41.47, 66.32, 50.14)
Decimal5107629
Display P3color(display-p3 0.302 0.937 0.678)
Web-safe#66FF99

Copy-ready code

every platformclick to select
/* CSS */
color: #4defad;
background-color: #4defad;
/* CSS custom property */
--brand: #4defad;
/* Tailwind (arbitrary) */
class="text-[#4defad] bg-[#4defad]"
/* SCSS */
$brand: #4defad;
/* SwiftUI */
Color(red: 0.302, green: 0.937, blue: 0.678)
/* UIKit */
UIColor(red: 0.302, green: 0.937, blue: 0.678, alpha: 1)
/* Android XML */
<color name="brand">#4DEFAD</color>
/* Android Compose */
Color(0xFF4DEFAD)
/* Flutter */
Color(0xFF4DEFAD)
/* Python / OpenCV (BGR) */
(173, 239, 77)
/* Python / PIL (RGB) */
(77, 239, 173)
/* Java AWT */
new Color(77, 239, 173)
/* .NET */
Color.FromArgb(255, 77, 239, 173)
/* OpenGL / Unity (0–1) */
(0.3020f, 0.9373f, 0.6784f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{77,239,173}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #4defad 85%, white);
border-color: color-mix(in oklab, #4defad 40%, transparent);
/* theme-aware in one line */
color: light-dark(#0B754A, #D3EEE3);
/* relative colour syntax */
--hover: hsl(from #4defad 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: #F2FCF8;
  --brand-100: #E6FAF2;
  --brand-200: #C5F6E2;
  --brand-300: #98F6D0;
  --brand-400: #4defad;
  --brand-500: #31ECA0;
  --brand-600: #14E18D;
  --brand-700: #11BB76;
  --brand-800: #0D965E;
  --brand-900: #0E6C46;
  --brand-950: #09442C;
  --brand: #4defad;
  --brand-ink: #000000;
  --brand-surface: #F4FAF8;
  --brand-border: #C0EDDA;
  --brand-hover: #2CEC9E;
  --brand-pressed: #14E18D;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #14241E;
    --brand-ink: #D3EEE3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F2FCF8',
        100: '#E6FAF2',
        200: '#C5F6E2',
        300: '#98F6D0',
        400: '#4defad',
        500: '#31ECA0',
        600: '#14E18D',
        700: '#11BB76',
        800: '#0D965E',
        900: '#0E6C46',
        950: '#09442C',
        DEFAULT: '#4defad',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2FCF8,
  '100': #E6FAF2,
  '200': #C5F6E2,
  '300': #98F6D0,
  '400': #4defad,
  '500': #31ECA0,
  '600': #14E18D,
  '700': #11BB76,
  '800': #0D965E,
  '900': #0E6C46,
  '950': #09442C,
);
$brand-base: #4defad;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F2FCF8", "$type": "color" },
      "100": { "$value": "#E6FAF2", "$type": "color" },
      "200": { "$value": "#C5F6E2", "$type": "color" },
      "300": { "$value": "#98F6D0", "$type": "color" },
      "400": { "$value": "#4defad", "$type": "color" },
      "500": { "$value": "#31ECA0", "$type": "color" },
      "600": { "$value": "#14E18D", "$type": "color" },
      "700": { "$value": "#11BB76", "$type": "color" },
      "800": { "$value": "#0D965E", "$type": "color" },
      "900": { "$value": "#0E6C46", "$type": "color" },
      "950": { "$value": "#09442C", "$type": "color" }
    },
    "brandInk": { "$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 #4defad · 14.27:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.47:1
AA fail · AA large fail · AAA fail
Aa
Black text · 14.27:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #4defad as text scores 1.47:1 on white and 14.27:1 on black.
Best tinted ink on it, if plain black or white feels flat: #0B754A at 3.90:1.

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
#0C8855 · 4.50:1
AA on white−33% L
#0C8855
The quick fox
#09623E · 7.43:1
AAA on white−41% L
#09623E
The quick fox
#4defad · 14.27:1
AA on blackalready passes
#4defad
The quick fox
#4defad · 14.27:1
AAA on blackalready passes
#4defad

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #0FA86A 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
#4defad on white: 1.47:1
AA ✗ fail · AA-large · AAA
Aa
#4defad on black: 14.27:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

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

NeutralRatioBoth directions
White1.47:1AaAa
Slate 501.41:1AaAa
Slate 1001.34:1AaAa
Slate 2001.19:1AaAa
Slate 3001.01:1AaAa
Slate 4001.74:1AaAa
Slate 5003.23:1AaAa
Slate 6005.15:1AaAa
Slate 7007.03:1AaAa
Slate 8009.94:1AaAa
Slate 90012.13:1AaAa
Black14.27:1AaAa
Colour vision deficiency
true color
protanopia · #EBDEA9
deuteranopia · #D6CFB1
tritanopia · #00EFDD

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. #4defad is pinned to step 400; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F2FCF8
#E6FAF2
#C5F6E2
#98F6D0
#4defad
#31ECA0
#14E18D
#11BB76
#0D965E
#0E6C46
#09442C
Base = 400Lightest = 50 · #F2FCF8Darkest = 950 · #09442CText 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 0.041 161.9);
  --brand-100: oklch(0.94 0.065 161.9);
  --brand-200: oklch(0.88 0.098 161.9);
  --brand-300: oklch(0.80 0.128 161.9);
  --brand-400: oklch(0.72 0.151 161.9);
  --brand-500: oklch(0.64 0.164 161.9);
  --brand-600: oklch(0.56 0.164 161.9);
  --brand-700: oklch(0.48 0.154 161.9);
  --brand-800: oklch(0.40 0.137 161.9);
  --brand-900: oklch(0.32 0.115 161.9);
  --brand-950: oklch(0.24 0.090 161.9);
}

Colors that work with #4defad

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#F4FAF8
Tinted page background
Border#C0EDDA
Hairlines and dividers
Muted text#4B9B7A
Captions on the surface
Accent#F349B9
Second voice, not a rival
Dark variant#0B754A
Hover, pressed, headers
Light variant#E8FDF4
Selected rows, tints
Dark surface#14241E
Dark-mode background
Hover#2CEC9E
One step down in lightness
Pressed#14E18D
Two steps down
Disabled#CDDFD8
Chroma pulled out
Focus ring#57F9B7
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 #4defad

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
  • Status meaning — pair it with an icon or label, never colour alone
  • 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 #0B754A
Safe as a 1px border on white
No — use #0FA86A

Meaning and mood

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

safegrowingnaturalpermissive

Green means go, well, and grown. It carries finance, sustainability and health with almost no explanation needed.

At this chroma the association is amplified — it will dominate anything placed beside it, so give it space and use it sparingly. The mid lightness keeps it versatile in both themes.

Worth knowing

Red/green pairs are the most common colour-blindness failure — never let the two carry meaning alone.

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight38/100
  • 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#EF4D8F
Analogous left#4DEF5C
Analogous right#4DE0EF
Split-complement 1#EF4DE0
Split-complement 2#EF5C4D
Triadic 1#AD4DEF
Triadic 2#EFAD4D
Tetradic#5C4DEF
On the wheel
Base+30°−30°+120°+240°+180°156°

#4defad sits at 156°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red30.2%
Green93.7%
Blue67.8%
R · 0–255
77
0x4d
G · 0–255
239
0xef
B · 0–255
173
0xad

CMYK percentages

Cyan67.8%
Magenta0.0%
Yellow27.6%
Key (black)6.3%

Total ink coverage is 102%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#4defad text on a black background

contrast 14.27:1

Card sample

#4defad text on a white background

contrast 1.47:1

Card sample

#4defad on grey

1.34:1

#4defad on its own surface

1.39:1

#4defad on its dark surface

10.97:1

CSS3 live lab

Text font color

The quick brown fox

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

Glowing headline

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

Soft neon halo

text-shadow: 0 0 14px rgba(77, 239, 173, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(77, 239, 173, 0.45);
Border & gradient
Gradient panel
border: 3px solid #4defad;
background: linear-gradient(135deg, #4defad, #4DC5EF);
Gradient text

Gradient headline

background: linear-gradient(90deg, #4defad, #4D9CEF);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #4defad;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #4defad;
caret-color: #4defad;
Left rule
Pull quote or callout
border-left: 4px solid #4defad;
Ring + tint
Selected chip
background: #E8FDF4;
box-shadow: inset 0 0 0 2px #4defad;
Conic badge
68%
background: conic-gradient(#4defad 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #4defad 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(77, 239, 173, 0.5)
rgb(77 239 173 / 50%)
#4defad80
hsl(156 84% 62% / 50%)
color-mix(in srgb, #4defad 50%, transparent)
Alpha8-digit hexFlat on white
10%#4defad1a#EDFDF7
20%#4defad33#DBFCEF
40%#4defad66#B8F9DE
60%#4defad99#94F5CE
80%#4defadcc#71F2BD

Gradients from #4defad

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, #85F4C7, #4defad 45%, #0B754A);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #4defad, #31ACEC);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #4defad, #EF4D8F);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #A1F7D4 0%, #4defad 45%, #0B754A 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF8, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #7CF37D 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #69D9F2 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #0B754A 0%, transparent 65%), #4defad;

Monochromatic scale

Palettes built from #4defad

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.

#4defad in the real world

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

Industries
SustainabilityFinanceHealth and wellnessAgriculture
Common UI roles
ButtonsLinksFocus statesCharts
Print note

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

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 14.27:1.

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.

#4defad, answered

What color is #4defad?

#4defad is a balanced electric green, closest to Medium Spring Green (ΔE2000 5.3). It sits at 156° on the hue wheel with 84% saturation and 62% lightness, which reads as cool.

What is the RGB value of #4defad?

rgb(77, 239, 173) — 77 red, 239 green and 173 blue out of 255, or 30.2% / 93.7% / 67.8% by channel.

What is #4defad in HSL and HSV?

hsl(156, 84%, 62%) and hsv(156, 68%, 94%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #4defad a light or a dark color?

It is a light color. Relative luminance is 0.6633 and perceived brightness is 77%, so black text on it reaches 14.27:1.

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

Black. It scores 14.27:1 against #4defad, versus 1.47:1 for white — AAA at any size.

Is #4defad accessible on a white background?

#4defad on white scores 1.47:1, which fails WCAG AA at every size. Darken it to #0C8855 to reach 4.5:1, or #09623E for 7:1.

What is the complementary color of #4defad?

#EF4D8F sits directly opposite on the wheel. Softer options are the split-complements #EF4DE0 and #EF5C4D, which give the same contrast with far less vibration.

What colors go well with #4defad?

For interface work: #F4FAF8 as the surface, #C0EDDA for borders, #4B9B7A for secondary text, #F349B9 as an accent and #0B754A for hover and pressed states. For a palette, the analogous pair #4DEF5C and #4DE0EF stays calm, while #EF4D8F is the loudest partner.

What is #4defad in CMYK for printing?

cmyk(68%, 0%, 28%, 6%). 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 #4defad warm or cool?

Cool — it scores 77 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #4DEF72; nudged cooler, #4BF1EA.

Which Tailwind color is closest to #4defad?

The green family — its 500 step is #22c55e, ΔE2000 13 away. That is a visible difference, so define #4defad as a custom token rather than reaching for the built-in.

How do I use #4defad in Tailwind CSS?

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

rgba(77, 239, 173, 0.5), or #4defad80 in eight-digit hex. Over white that composites to #A6F7D6; over black, #277857.

Is #4defad a web-safe color?

No. The nearest web-safe colour is #66FF99, ΔE2000 7.1 away. The palette only matters for legacy displays and some email clients now.

What does the color #4defad mean?

As a green, it reads safe, growing, natural. Green means go, well, and grown. It carries finance, sustainability and health with almost no explanation needed. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #4defad?

The safest is same-hue elevation: linear-gradient(135deg, #85F4C7, #4defad 45%, #0B754A). For more colour, a short hue run to #31ACEC keeps it rich without turning muddy.

Work with #4defad in the Color Lab

Every tool opens with this colour already loaded.

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