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green · cool

#aef4cc

a light, electric green · cool · closest name: Aqua Marine

Token name suggestion: Morning Fern

RGB
174, 244, 204
HSL
146°, 76%, 82%
CMYK
29, 0, 16, 4
Luminance
0.7806

#aef4cc is a light electric green, 146° on the wheel and 73/100 on the cool side. Put black text on it (16.61:1). As text it scores 1.26:1 on white — use #128744 instead. Nearest name is Aqua Marine, nearest Tailwind family is emerald.

hsl(146 76% 82%)rgb(174 244 204)Base step 300AAA inkCool

At a glance

Every number on this page in one read: what #aef4cc is made of, how bright it looks, and which way it leans.

Hex
#aef4cc
Hue
146°
green
Saturation
76%
electric
Lightness
82%
light
Brightness
96%
HSV value
Perceived
87%
weighted brightness
Luminance
0.7806
WCAG relative
Temperature
Cool
73/100 cool
Color family
Green
Tone
Electric
Best ink
Black
16.61:1
Closest name
Aqua Marine
ΔE2000 6.7
Chroma
32.3
LCH, 0–130ish
OKLCH L
0.910
perceptual lightness
Tailwind
emerald
500 · ΔE 18.6
Web-safe
#99FFCC
nearest of 216
Where it sits
Hue146° of 360°
Saturation76%
Lightness82%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #aef4cc.

Temperature
Warm ← → Cool73% 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
Red12%
Green83%
Blue6%

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

Every format

HEX#aef4cc
HEX (8-digit)#aef4ccff
RGBrgb(174, 244, 204)
RGBArgba(174, 244, 204, 1)
HSLhsl(146, 76%, 82%)
HSV / HSBhsv(146, 29%, 96%)
HWBhwb(146 68% 4%)
CMYKcmyk(29%, 0%, 16%, 4%)
LABlab(90.8 -29.8 12.4)
LCHlch(90.8 32.3 157.4)
OKLCHoklch(0.910 0.089 159.0)
XYZ (D65)xyz(60.70, 78.06, 68.98)
Decimal11465932
Display P3color(display-p3 0.682 0.957 0.800)
Web-safe#99FFCC

Copy-ready code

every platformclick to select
/* CSS */
color: #aef4cc;
background-color: #aef4cc;
/* CSS custom property */
--brand: #aef4cc;
/* Tailwind (arbitrary) */
class="text-[#aef4cc] bg-[#aef4cc]"
/* SCSS */
$brand: #aef4cc;
/* SwiftUI */
Color(red: 0.682, green: 0.957, blue: 0.800)
/* UIKit */
UIColor(red: 0.682, green: 0.957, blue: 0.800, alpha: 1)
/* Android XML */
<color name="brand">#AEF4CC</color>
/* Android Compose */
Color(0xFFAEF4CC)
/* Flutter */
Color(0xFFAEF4CC)
/* Python / OpenCV (BGR) */
(204, 244, 174)
/* Python / PIL (RGB) */
(174, 244, 204)
/* Java AWT */
new Color(174, 244, 204)
/* .NET */
Color.FromArgb(255, 174, 244, 204)
/* OpenGL / Unity (0–1) */
(0.6824f, 0.9569f, 0.8000f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{174,244,204}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #aef4cc 85%, white);
border-color: color-mix(in oklab, #aef4cc 40%, transparent);
/* theme-aware in one line */
color: light-dark(#0F7039, #D3EEDE);
/* relative colour syntax */
--hover: hsl(from #aef4cc 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: #F3FCF7;
  --brand-100: #E7F9EE;
  --brand-200: #C8F4DB;
  --brand-300: #aef4cc;
  --brand-400: #6BEBA2;
  --brand-500: #39E483;
  --brand-600: #1DD86D;
  --brand-700: #18B45B;
  --brand-800: #149049;
  --brand-900: #126837;
  --brand-950: #0B4122;
  --brand: #aef4cc;
  --brand-ink: #000000;
  --brand-surface: #F4FAF7;
  --brand-border: #C0EDD3;
  --brand-hover: #8FF0B8;
  --brand-pressed: #6FEBA4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #14241B;
    --brand-ink: #D3EEDE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F3FCF7',
        100: '#E7F9EE',
        200: '#C8F4DB',
        300: '#aef4cc',
        400: '#6BEBA2',
        500: '#39E483',
        600: '#1DD86D',
        700: '#18B45B',
        800: '#149049',
        900: '#126837',
        950: '#0B4122',
        DEFAULT: '#aef4cc',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F3FCF7,
  '100': #E7F9EE,
  '200': #C8F4DB,
  '300': #aef4cc,
  '400': #6BEBA2,
  '500': #39E483,
  '600': #1DD86D,
  '700': #18B45B,
  '800': #149049,
  '900': #126837,
  '950': #0B4122,
);
$brand-base: #aef4cc;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F3FCF7", "$type": "color" },
      "100": { "$value": "#E7F9EE", "$type": "color" },
      "200": { "$value": "#C8F4DB", "$type": "color" },
      "300": { "$value": "#aef4cc", "$type": "color" },
      "400": { "$value": "#6BEBA2", "$type": "color" },
      "500": { "$value": "#39E483", "$type": "color" },
      "600": { "$value": "#1DD86D", "$type": "color" },
      "700": { "$value": "#18B45B", "$type": "color" },
      "800": { "$value": "#149049", "$type": "color" },
      "900": { "$value": "#126837", "$type": "color" },
      "950": { "$value": "#0B4122", "$type": "color" }
    },
    "brandInk": { "$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 #aef4cc · 16.61:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.26:1
AA fail · AA large fail · AAA fail
Aa
Black text · 16.61:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #aef4cc as text scores 1.26:1 on white and 16.61:1 on black.
Best tinted ink on it, if plain black or white feels flat: #0F7039 at 4.89:1.

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
#128744 · 4.59:1
AA on white−52% L
#128744
The quick fox
#0D6332 · 7.37:1
AAA on white−60% L
#0D6332
The quick fox
#aef4cc · 16.61:1
AA on blackalready passes
#aef4cc
The quick fox
#aef4cc · 16.61:1
AAA on blackalready passes
#aef4cc

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #17AB56 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
#aef4cc on white: 1.26:1
AA ✗ fail · AA-large · AAA
Aa
#aef4cc on black: 16.61:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #aef4cc as text on that neutral, and that neutral as text on #aef4cc.

NeutralRatioBoth directions
White1.26:1AaAa
Slate 501.21:1AaAa
Slate 1001.15:1AaAa
Slate 2001.03:1AaAa
Slate 3001.17:1AaAa
Slate 4002.03:1AaAa
Slate 5003.76:1AaAa
Slate 6005.99:1AaAa
Slate 7008.19:1AaAa
Slate 80011.57:1AaAa
Slate 90014.12:1AaAa
Black16.61:1AaAa
Colour vision deficiency
true color
protanopia · #F3EACA
deuteranopia · #E7E1CE
tritanopia · #A1F3E9

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. #aef4cc is pinned to step 300; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F3FCF7
#E7F9EE
#C8F4DB
#aef4cc
#6BEBA2
#39E483
#1DD86D
#18B45B
#149049
#126837
#0B4122
Base = 300Lightest = 50 · #F3FCF7Darkest = 950 · #0B4122Text 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 0.022 159.0);
  --brand-100: oklch(0.94 0.036 159.0);
  --brand-200: oklch(0.88 0.053 159.0);
  --brand-300: oklch(0.80 0.069 159.0);
  --brand-400: oklch(0.72 0.082 159.0);
  --brand-500: oklch(0.64 0.089 159.0);
  --brand-600: oklch(0.56 0.089 159.0);
  --brand-700: oklch(0.48 0.084 159.0);
  --brand-800: oklch(0.40 0.075 159.0);
  --brand-900: oklch(0.32 0.062 159.0);
  --brand-950: oklch(0.24 0.049 159.0);
}

Colors that work with #aef4cc

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#F4FAF7
Tinted page background
Border#C0EDD3
Hairlines and dividers
Muted text#4B9B6D
Captions on the surface
Accent#B8149B
Second voice, not a rival
Dark variant#0F7039
Hover, pressed, headers
Light variant#E9FCF1
Selected rows, tints
Dark surface#14241B
Dark-mode background
Hover#8FF0B8
One step down in lightness
Pressed#6FEBA4
Two steps down
Disabled#F3F7F4
Chroma pulled out
Focus ring#BDFAD7
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 #aef4cc

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
  • Card and section backgrounds
  • Brand accents, badges and data highlights
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • White text placed on it
  • 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 #0F7039
Safe as a 1px border on white
No — use #17AB56

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 lightness keeps it airy and approachable.

Worth knowing

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

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight18/100
  • 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#F4AED6
Analogous left#B3F4AE
Analogous right#AEF4EF
Split-complement 1#EFAEF4
Split-complement 2#F4AEB3
Triadic 1#CCAEF4
Triadic 2#F4CCAE
Tetradic#AEB3F4
On the wheel
Base+30°−30°+120°+240°+180°146°

#aef4cc sits at 146°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red68.2%
Green95.7%
Blue80.0%
R · 0–255
174
0xae
G · 0–255
244
0xf4
B · 0–255
204
0xcc

CMYK percentages

Cyan28.7%
Magenta0.0%
Yellow16.4%
Key (black)4.3%

Total ink coverage is 49%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#aef4cc text on a black background

contrast 16.61:1

Card sample

#aef4cc text on a white background

contrast 1.26:1

Card sample

#aef4cc on grey

1.15:1

#aef4cc on its own surface

1.20:1

#aef4cc on its dark surface

12.80:1

CSS3 live lab

Text font color

The quick brown fox

color: #aef4cc;
Background color
Panel with #aef4cc background
background-color: #aef4cc;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #aef4cc;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(174, 244, 204, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(174, 244, 204, 0.45);
Border & gradient
Gradient panel
border: 3px solid #aef4cc;
background: linear-gradient(135deg, #aef4cc, #AEEDF4);
Gradient text

Gradient headline

background: linear-gradient(90deg, #aef4cc, #AEDCF4);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #aef4cc;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #aef4cc;
caret-color: #aef4cc;
Left rule
Pull quote or callout
border-left: 4px solid #aef4cc;
Ring + tint
Selected chip
background: #E9FCF1;
box-shadow: inset 0 0 0 2px #aef4cc;
Conic badge
68%
background: conic-gradient(#aef4cc 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #aef4cc 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(174, 244, 204, 0.5)
rgb(174 244 204 / 50%)
#aef4cc80
hsl(146 76% 82% / 50%)
color-mix(in srgb, #aef4cc 50%, transparent)
Alpha8-digit hexFlat on white
10%#aef4cc1a#F7FEFA
20%#aef4cc33#EFFDF5
40%#aef4cc66#DFFBEB
60%#aef4cc99#CEF8E0
80%#aef4cccc#BEF6D6

Gradients from #aef4cc

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, #E4FBEE, #aef4cc 45%, #0F7039);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #aef4cc, #93E0F0);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #aef4cc, #F4AED6);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #F2FDF7 0%, #aef4cc 45%, #0F7039 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF7, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #E0FADB 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #C9F7F8 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #0F7039 0%, transparent 65%), #aef4cc;

Monochromatic scale

Palettes built from #aef4cc

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.

#aef4cc 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
SurfacesBadgesHighlightsEmpty states
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 16.61:1.

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.

#aef4cc, answered

What color is #aef4cc?

#aef4cc is a light electric green, closest to Aqua Marine (ΔE2000 6.7). It sits at 146° on the hue wheel with 76% saturation and 82% lightness, which reads as cool.

What is the RGB value of #aef4cc?

rgb(174, 244, 204) — 174 red, 244 green and 204 blue out of 255, or 68.2% / 95.7% / 80% by channel.

What is #aef4cc in HSL and HSV?

hsl(146, 76%, 82%) and hsv(146, 29%, 96%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #aef4cc a light or a dark color?

It is a light color. Relative luminance is 0.7806 and perceived brightness is 87%, so black text on it reaches 16.61:1.

Should I use black or white text on #aef4cc?

Black. It scores 16.61:1 against #aef4cc, versus 1.26:1 for white — AAA at any size.

Is #aef4cc accessible on a white background?

#aef4cc on white scores 1.26:1, which fails WCAG AA at every size. Darken it to #128744 to reach 4.5:1, or #0D6332 for 7:1.

What is the complementary color of #aef4cc?

#F4AED6 sits directly opposite on the wheel. Softer options are the split-complements #EFAEF4 and #F4AEB3, which give the same contrast with far less vibration.

What colors go well with #aef4cc?

For interface work: #F4FAF7 as the surface, #C0EDD3 for borders, #4B9B6D for secondary text, #B8149B as an accent and #0F7039 for hover and pressed states. For a palette, the analogous pair #B3F4AE and #AEF4EF stays calm, while #F4AED6 is the loudest partner.

What is #aef4cc in CMYK for printing?

cmyk(29%, 0%, 16%, 4%). 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 #aef4cc warm or cool?

Cool — it scores 73 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #AEF4B2; nudged cooler, #ADF5E6.

Which Tailwind color is closest to #aef4cc?

The emerald family — its 500 step is #10b981, ΔE2000 18.6 away. That is a visible difference, so define #aef4cc as a custom token rather than reaching for the built-in.

How do I use #aef4cc in Tailwind CSS?

Inline it as an arbitrary value with bg-[#aef4cc] or text-[#aef4cc], 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 #aef4cc with 50% opacity?

rgba(174, 244, 204, 0.5), or #aef4cc80 in eight-digit hex. Over white that composites to #D7FAE6; over black, #577A66.

Is #aef4cc a web-safe color?

No. The nearest web-safe colour is #99FFCC, ΔE2000 4.4 away. The palette only matters for legacy displays and some email clients now.

What does the color #aef4cc 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 #aef4cc?

The safest is same-hue elevation: linear-gradient(135deg, #E4FBEE, #aef4cc 45%, #0F7039). For more colour, a short hue run to #93E0F0 keeps it rich without turning muddy.

Work with #aef4cc in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #aef4cc at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.