Skip to content
green · cool

#ace4be

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

Token name suggestion: Drift Fern

RGB
172, 228, 190
HSL
139°, 51%, 78%
CMYK
25, 0, 17, 11
Luminance
0.6798

#ace4be is a light vivid green, 139° on the wheel and 71/100 on the cool side. Put black text on it (14.60:1). As text it scores 1.44:1 on white — use #2B8448 instead. Nearest name is Aqua Marine, nearest Tailwind family is emerald.

hsl(139 51% 78%)rgb(172 228 190)Base step 300AAA inkCool

At a glance

Every number on this page in one read: what #ace4be is made of, how bright it looks, and which way it leans.

Hex
#ace4be
Hue
139°
green
Saturation
51%
vivid
Lightness
78%
light
Brightness
89%
HSV value
Perceived
82%
weighted brightness
Luminance
0.6798
WCAG relative
Temperature
Cool
71/100 cool
Color family
Green
Tone
Vivid
Best ink
Black
14.60:1
Closest name
Aqua Marine
ΔE2000 9.5
Chroma
28.4
LCH, 0–130ish
OKLCH L
0.870
perceptual lightness
Tailwind
emerald
500 · ΔE 16.9
Web-safe
#99CCCC
nearest of 216
Where it sits
Hue139° of 360°
Saturation51%
Lightness78%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #ace4be.

Temperature
Warm ← → Cool71% 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
Red13%
Green82%
Blue5%

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

Every format

HEX#ace4be
HEX (8-digit)#ace4beff
RGBrgb(172, 228, 190)
RGBArgba(172, 228, 190, 1)
HSLhsl(139, 51%, 78%)
HSV / HSBhsv(139, 25%, 89%)
HWBhwb(139 67% 11%)
CMYKcmyk(25%, 0%, 17%, 11%)
LABlab(86.0 -25.4 12.8)
LCHlch(86.0 28.4 153.2)
OKLCHoklch(0.870 0.078 154.8)
XYZ (D65)xyz(54.05, 67.97, 58.98)
Decimal11330750
Display P3color(display-p3 0.675 0.894 0.745)
Web-safe#99CCCC

Copy-ready code

every platformclick to select
/* CSS */
color: #ace4be;
background-color: #ace4be;
/* CSS custom property */
--brand: #ace4be;
/* Tailwind (arbitrary) */
class="text-[#ace4be] bg-[#ace4be]"
/* SCSS */
$brand: #ace4be;
/* SwiftUI */
Color(red: 0.675, green: 0.894, blue: 0.745)
/* UIKit */
UIColor(red: 0.675, green: 0.894, blue: 0.745, alpha: 1)
/* Android XML */
<color name="brand">#ACE4BE</color>
/* Android Compose */
Color(0xFFACE4BE)
/* Flutter */
Color(0xFFACE4BE)
/* Python / OpenCV (BGR) */
(190, 228, 172)
/* Python / PIL (RGB) */
(172, 228, 190)
/* Java AWT */
new Color(172, 228, 190)
/* .NET */
Color.FromArgb(255, 172, 228, 190)
/* OpenGL / Unity (0–1) */
(0.6745f, 0.8941f, 0.7451f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{172,228,190}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #ace4be 85%, white);
border-color: color-mix(in oklab, #ace4be 40%, transparent);
/* theme-aware in one line */
color: light-dark(#1F6034, #D3EEDB);
/* relative colour syntax */
--hover: hsl(from #ace4be 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: #F4FAF6;
  --brand-100: #EAF6EE;
  --brand-200: #CFEDD9;
  --brand-300: #ace4be;
  --brand-400: #80D69C;
  --brand-500: #56C87A;
  --brand-600: #3CB964;
  --brand-700: #329A53;
  --brand-800: #287B43;
  --brand-900: #215A33;
  --brand-950: #143820;
  --brand: #ace4be;
  --brand-ink: #000000;
  --brand-surface: #F4FAF6;
  --brand-border: #C1EBCF;
  --brand-hover: #91DBA9;
  --brand-pressed: #76D294;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142419;
    --brand-ink: #D3EEDB;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4FAF6',
        100: '#EAF6EE',
        200: '#CFEDD9',
        300: '#ace4be',
        400: '#80D69C',
        500: '#56C87A',
        600: '#3CB964',
        700: '#329A53',
        800: '#287B43',
        900: '#215A33',
        950: '#143820',
        DEFAULT: '#ace4be',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4FAF6,
  '100': #EAF6EE,
  '200': #CFEDD9,
  '300': #ace4be,
  '400': #80D69C,
  '500': #56C87A,
  '600': #3CB964,
  '700': #329A53,
  '800': #287B43,
  '900': #215A33,
  '950': #143820,
);
$brand-base: #ace4be;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4FAF6", "$type": "color" },
      "100": { "$value": "#EAF6EE", "$type": "color" },
      "200": { "$value": "#CFEDD9", "$type": "color" },
      "300": { "$value": "#ace4be", "$type": "color" },
      "400": { "$value": "#80D69C", "$type": "color" },
      "500": { "$value": "#56C87A", "$type": "color" },
      "600": { "$value": "#3CB964", "$type": "color" },
      "700": { "$value": "#329A53", "$type": "color" },
      "800": { "$value": "#287B43", "$type": "color" },
      "900": { "$value": "#215A33", "$type": "color" },
      "950": { "$value": "#143820", "$type": "color" }
    },
    "brandInk": { "$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 #ace4be · 14.60:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.44:1
AA fail · AA large fail · AAA fail
Aa
Black text · 14.60:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #ace4be as text scores 1.44:1 on white and 14.60:1 on black.
Best tinted ink on it, if plain black or white feels flat: #1F6034 at 5.25:1.

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
#2B8448 · 4.67:1
AA on white−44% L
#2B8448
The quick fox
#206235 · 7.34:1
AAA on white−53% L
#206235
The quick fox
#ace4be · 14.60:1
AA on blackalready passes
#ace4be
The quick fox
#ace4be · 14.60:1
AAA on blackalready passes
#ace4be

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #36A75B 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
#ace4be on white: 1.44:1
AA ✗ fail · AA-large · AAA
Aa
#ace4be on black: 14.60:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #ace4be as text on that neutral, and that neutral as text on #ace4be.

NeutralRatioBoth directions
White1.44:1AaAa
Slate 501.38:1AaAa
Slate 1001.31:1AaAa
Slate 2001.17:1AaAa
Slate 3001.03:1AaAa
Slate 4001.78:1AaAa
Slate 5003.31:1AaAa
Slate 6005.27:1AaAa
Slate 7007.20:1AaAa
Slate 80010.17:1AaAa
Slate 90012.41:1AaAa
Black14.60:1AaAa
Colour vision deficiency
true color
protanopia · #E4DBBC
deuteranopia · #DAD4C0
tritanopia · #A3E3D9

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. #ace4be 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.

#F4FAF6
#EAF6EE
#CFEDD9
#ace4be
#80D69C
#56C87A
#3CB964
#329A53
#287B43
#215A33
#143820
Base = 300Lightest = 50 · #F4FAF6Darkest = 950 · #143820Text 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 0.019 154.8);
  --brand-100: oklch(0.94 0.031 154.8);
  --brand-200: oklch(0.88 0.047 154.8);
  --brand-300: oklch(0.80 0.061 154.8);
  --brand-400: oklch(0.72 0.072 154.8);
  --brand-500: oklch(0.64 0.078 154.8);
  --brand-600: oklch(0.56 0.078 154.8);
  --brand-700: oklch(0.48 0.073 154.8);
  --brand-800: oklch(0.40 0.065 154.8);
  --brand-900: oklch(0.32 0.054 154.8);
  --brand-950: oklch(0.24 0.043 154.8);
}

Colors that work with #ace4be

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#F4FAF6
Tinted page background
Border#C1EBCF
Hairlines and dividers
Muted text#4B9B64
Captions on the surface
Accent#9E2E96
Second voice, not a rival
Dark variant#1F6034
Hover, pressed, headers
Light variant#ECF9F0
Selected rows, tints
Dark surface#142419
Dark-mode background
Hover#91DBA9
One step down in lightness
Pressed#76D294
Two steps down
Disabled#F3F7F4
Chroma pulled out
Focus ring#B7EDC8
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 #ace4be

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 #1F6034
Safe as a 1px border on white
No — use #36A75B

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.

This is a confident chroma: strong enough to lead a brand, restrained enough to live in an interface all day. 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
  • FormalityMedium
  • EnergyMedium-high
  • Weight22/100
  • 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#E4ACD2
Analogous left#B6E4AC
Analogous right#ACE4DA
Split-complement 1#DAACE4
Split-complement 2#E4ACB6
Triadic 1#BEACE4
Triadic 2#E4BEAC
Tetradic#ACB6E4
On the wheel
Base+30°−30°+120°+240°+180°139°

#ace4be sits at 139°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red67.5%
Green89.4%
Blue74.5%
R · 0–255
172
0xac
G · 0–255
228
0xe4
B · 0–255
190
0xbe

CMYK percentages

Cyan24.6%
Magenta0.0%
Yellow16.7%
Key (black)10.6%

Total ink coverage is 52%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#ace4be text on a black background

contrast 14.60:1

Card sample

#ace4be text on a white background

contrast 1.44:1

Card sample

#ace4be on grey

1.31:1

#ace4be on its own surface

1.36:1

#ace4be on its dark surface

11.26:1

CSS3 live lab

Text font color

The quick brown fox

color: #ace4be;
Background color
Panel with #ace4be background
background-color: #ace4be;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #ace4be;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(172, 228, 190, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(172, 228, 190, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ace4be;
background: linear-gradient(135deg, #ace4be, #ACE4E3);
Gradient text

Gradient headline

background: linear-gradient(90deg, #ace4be, #ACD7E4);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #ace4be;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #ace4be;
caret-color: #ace4be;
Left rule
Pull quote or callout
border-left: 4px solid #ace4be;
Ring + tint
Selected chip
background: #ECF9F0;
box-shadow: inset 0 0 0 2px #ace4be;
Conic badge
68%
background: conic-gradient(#ace4be 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #ace4be 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(172, 228, 190, 0.5)
rgb(172 228 190 / 50%)
#ace4be80
hsl(139 51% 78% / 50%)
color-mix(in srgb, #ace4be 50%, transparent)
Alpha8-digit hexFlat on white
10%#ace4be1a#F7FCF9
20%#ace4be33#EEFAF2
40%#ace4be66#DEF4E5
60%#ace4be99#CDEFD8
80%#ace4becc#BDE9CB

Gradients from #ace4be

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, #DAF3E2, #ace4be 45%, #1F6034);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #ace4be, #95D7DC);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #ace4be, #E4ACD2);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #F1FAF4 0%, #ace4be 45%, #1F6034 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF6, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #DAF0D2 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #C3EBE8 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #1F6034 0%, transparent 65%), #ace4be;

Monochromatic scale

Palettes built from #ace4be

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.

#ace4be 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

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 14.60:1.

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.

#ace4be, answered

What color is #ace4be?

#ace4be is a light vivid green, closest to Aqua Marine (ΔE2000 9.5). It sits at 139° on the hue wheel with 51% saturation and 78% lightness, which reads as cool.

What is the RGB value of #ace4be?

rgb(172, 228, 190) — 172 red, 228 green and 190 blue out of 255, or 67.5% / 89.4% / 74.5% by channel.

What is #ace4be in HSL and HSV?

hsl(139, 51%, 78%) and hsv(139, 25%, 89%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #ace4be a light or a dark color?

It is a light color. Relative luminance is 0.6798 and perceived brightness is 82%, so black text on it reaches 14.60:1.

Should I use black or white text on #ace4be?

Black. It scores 14.60:1 against #ace4be, versus 1.44:1 for white — AAA at any size.

Is #ace4be accessible on a white background?

#ace4be on white scores 1.44:1, which fails WCAG AA at every size. Darken it to #2B8448 to reach 4.5:1, or #206235 for 7:1.

What is the complementary color of #ace4be?

#E4ACD2 sits directly opposite on the wheel. Softer options are the split-complements #DAACE4 and #E4ACB6, which give the same contrast with far less vibration.

What colors go well with #ace4be?

For interface work: #F4FAF6 as the surface, #C1EBCF for borders, #4B9B64 for secondary text, #9E2E96 as an accent and #1F6034 for hover and pressed states. For a palette, the analogous pair #B6E4AC and #ACE4DA stays calm, while #E4ACD2 is the loudest partner.

What is #ace4be in CMYK for printing?

cmyk(25%, 0%, 17%, 11%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #ace4be warm or cool?

Cool — it scores 71 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #AEE4AC; nudged cooler, #ABE5D3.

Which Tailwind color is closest to #ace4be?

The emerald family — its 500 step is #10b981, ΔE2000 16.9 away. That is a visible difference, so define #ace4be as a custom token rather than reaching for the built-in.

How do I use #ace4be in Tailwind CSS?

Inline it as an arbitrary value with bg-[#ace4be] or text-[#ace4be], 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 #ace4be with 50% opacity?

rgba(172, 228, 190, 0.5), or #ace4be80 in eight-digit hex. Over white that composites to #D6F2DF; over black, #56725F.

Is #ace4be a web-safe color?

No. The nearest web-safe colour is #99CCCC, ΔE2000 14.2 away. The palette only matters for legacy displays and some email clients now.

What does the color #ace4be 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 #ace4be?

The safest is same-hue elevation: linear-gradient(135deg, #DAF3E2, #ace4be 45%, #1F6034). For more colour, a short hue run to #95D7DC keeps it rich without turning muddy.

Work with #ace4be in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #ace4be at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.