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green · neutral

#ace155

a balanced, vivid green · neutral · closest name: Yellow Green

Token name suggestion: Studio Moss

RGB
172, 225, 85
HSL
83°, 70%, 61%
CMYK
24, 0, 62, 12
Luminance
0.6328

#ace155 is a balanced vivid green, 83° on the wheel and 44/100 on the cool side. Put black text on it (13.66:1). As text it scores 1.54:1 on white — use #598117 instead. Nearest name is Yellow Green, nearest Tailwind family is lime.

hsl(83 70% 61%)rgb(172 225 85)Base step 500AAA inkNeutral

At a glance

Every number on this page in one read: what #ace155 is made of, how bright it looks, and which way it leans.

Hex
#ace155
Hue
83°
green
Saturation
70%
vivid
Lightness
61%
balanced
Brightness
88%
HSV value
Perceived
78%
weighted brightness
Luminance
0.6328
WCAG relative
Temperature
Neutral
44/100 cool
Color family
Green
Tone
Vivid
Best ink
Black
13.66:1
Closest name
Yellow Green
ΔE2000 5.1
Chroma
71.9
LCH, 0–130ish
OKLCH L
0.846
perceptual lightness
Tailwind
lime
500 · ΔE 6.8
Web-safe
#99CC66
nearest of 216
Where it sits
Hue83° of 360°
Saturation70%
Lightness61%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #ace155.

Temperature
Warm ← → Cool44% cool

Reads neutral. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.

Luminance by channel
Red14%
Green85%
Blue1%

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

Every format

HEX#ace155
HEX (8-digit)#ace155ff
RGBrgb(172, 225, 85)
RGBArgba(172, 225, 85, 1)
HSLhsl(83, 70%, 61%)
HSV / HSBhsv(83, 62%, 88%)
HWBhwb(83 33% 12%)
CMYKcmyk(24%, 0%, 62%, 12%)
LABlab(83.6 -37.9 61.1)
LCHlch(83.6 71.9 121.8)
OKLCHoklch(0.846 0.177 127.4)
XYZ (D65)xyz(45.58, 63.28, 18.40)
Decimal11329877
Display P3color(display-p3 0.675 0.882 0.333)
Web-safe#99CC66

Copy-ready code

every platformclick to select
/* CSS */
color: #ace155;
background-color: #ace155;
/* CSS custom property */
--brand: #ace155;
/* Tailwind (arbitrary) */
class="text-[#ace155] bg-[#ace155]"
/* SCSS */
$brand: #ace155;
/* SwiftUI */
Color(red: 0.675, green: 0.882, blue: 0.333)
/* UIKit */
UIColor(red: 0.675, green: 0.882, blue: 0.333, alpha: 1)
/* Android XML */
<color name="brand">#ACE155</color>
/* Android Compose */
Color(0xFFACE155)
/* Flutter */
Color(0xFFACE155)
/* Python / OpenCV (BGR) */
(85, 225, 172)
/* Python / PIL (RGB) */
(172, 225, 85)
/* Java AWT */
new Color(172, 225, 85)
/* .NET */
Color.FromArgb(255, 172, 225, 85)
/* OpenGL / Unity (0–1) */
(0.6745f, 0.8824f, 0.3333f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{172,225,85}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #ace155 85%, white);
border-color: color-mix(in oklab, #ace155 40%, transparent);
/* theme-aware in one line */
color: light-dark(#4B6C13, #E4EED3);
/* relative colour syntax */
--hover: hsl(from #ace155 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: #F8FCF3;
  --brand-100: #F2F8E7;
  --brand-200: #E3F2C9;
  --brand-300: #D0EEA0;
  --brand-400: #B9E670;
  --brand-500: #ace155;
  --brand-600: #8FD025;
  --brand-700: #77AD1F;
  --brand-800: #5F8B18;
  --brand-900: #476516;
  --brand-950: #2C3F0E;
  --brand: #ace155;
  --brand-ink: #000000;
  --brand-surface: #F8FAF4;
  --brand-border: #DCEDC0;
  --brand-hover: #9DDC37;
  --brand-pressed: #8CCB24;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #1E2414;
    --brand-ink: #E4EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F8FCF3',
        100: '#F2F8E7',
        200: '#E3F2C9',
        300: '#D0EEA0',
        400: '#B9E670',
        500: '#ace155',
        600: '#8FD025',
        700: '#77AD1F',
        800: '#5F8B18',
        900: '#476516',
        950: '#2C3F0E',
        DEFAULT: '#ace155',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F8FCF3,
  '100': #F2F8E7,
  '200': #E3F2C9,
  '300': #D0EEA0,
  '400': #B9E670,
  '500': #ace155,
  '600': #8FD025,
  '700': #77AD1F,
  '800': #5F8B18,
  '900': #476516,
  '950': #2C3F0E,
);
$brand-base: #ace155;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F8FCF3", "$type": "color" },
      "100": { "$value": "#F2F8E7", "$type": "color" },
      "200": { "$value": "#E3F2C9", "$type": "color" },
      "300": { "$value": "#D0EEA0", "$type": "color" },
      "400": { "$value": "#B9E670", "$type": "color" },
      "500": { "$value": "#ace155", "$type": "color" },
      "600": { "$value": "#8FD025", "$type": "color" },
      "700": { "$value": "#77AD1F", "$type": "color" },
      "800": { "$value": "#5F8B18", "$type": "color" },
      "900": { "$value": "#476516", "$type": "color" },
      "950": { "$value": "#2C3F0E", "$type": "color" }
    },
    "brandInk": { "$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 #ace155 · 13.66:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.54:1
AA fail · AA large fail · AAA fail
Aa
Black text · 13.66:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #ace155 as text scores 1.54:1 on white and 13.66:1 on black.
Best tinted ink on it, if plain black or white feels flat: #4B6C13 at 3.95:1.

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
#598117 · 4.59:1
AA on white−31% L
#598117
The quick fox
#415F11 · 7.32:1
AAA on white−39% L
#415F11
The quick fox
#ace155 · 13.66:1
AA on blackalready passes
#ace155
The quick fox
#ace155 · 13.66:1
AAA on blackalready passes
#ace155

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #6EA01C 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
#ace155 on white: 1.54:1
AA ✗ fail · AA-large · AAA
Aa
#ace155 on black: 13.66:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #ace155 as text on that neutral, and that neutral as text on #ace155.

NeutralRatioBoth directions
White1.54:1AaAa
Slate 501.47:1AaAa
Slate 1001.40:1AaAa
Slate 2001.25:1AaAa
Slate 3001.04:1AaAa
Slate 4001.67:1AaAa
Slate 5003.09:1AaAa
Slate 6004.93:1AaAa
Slate 7006.73:1AaAa
Slate 8009.51:1AaAa
Slate 90011.61:1AaAa
Black13.66:1AaAa
Colour vision deficiency
true color
protanopia · #ECD344
deuteranopia · #E4CF5F
tritanopia · #B2D7C4

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. #ace155 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.

#F8FCF3
#F2F8E7
#E3F2C9
#D0EEA0
#B9E670
#ace155
#8FD025
#77AD1F
#5F8B18
#476516
#2C3F0E
Base = 500Lightest = 50 · #F8FCF3Darkest = 950 · #2C3F0EText 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 0.044 127.4);
  --brand-100: oklch(0.94 0.071 127.4);
  --brand-200: oklch(0.88 0.106 127.4);
  --brand-300: oklch(0.80 0.138 127.4);
  --brand-400: oklch(0.72 0.163 127.4);
  --brand-500: oklch(0.64 0.177 127.4);
  --brand-600: oklch(0.56 0.177 127.4);
  --brand-700: oklch(0.48 0.166 127.4);
  --brand-800: oklch(0.40 0.149 127.4);
  --brand-900: oklch(0.32 0.124 127.4);
  --brand-950: oklch(0.24 0.097 127.4);
}

Colors that work with #ace155

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#F8FAF4
Tinted page background
Border#DCEDC0
Hairlines and dividers
Muted text#7D9B4B
Captions on the surface
Accent#6451E5
Second voice, not a rival
Dark variant#4B6C13
Hover, pressed, headers
Light variant#F4FBE9
Selected rows, tints
Dark surface#1E2414
Dark-mode background
Hover#9DDC37
One step down in lightness
Pressed#8CCB24
Two steps down
Disabled#D5DDC9
Chroma pulled out
Focus ring#B7ED5D
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 #ace155

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 #4B6C13
Safe as a 1px border on white
No — use #6EA01C

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 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
  • FormalityMedium
  • EnergyMedium-high
  • Weight39/100
  • TemperatureNeutral
  • ApproachabilityHigh

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#8A55E1
Analogous left#E1D055
Analogous right#66E155
Split-complement 1#5566E1
Split-complement 2#D055E1
Triadic 1#55ACE1
Triadic 2#E155AC
Tetradic#55E1D0
On the wheel
Base+30°−30°+120°+240°+180°83°

#ace155 sits at 83°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red67.5%
Green88.2%
Blue33.3%
R · 0–255
172
0xac
G · 0–255
225
0xe1
B · 0–255
85
0x55

CMYK percentages

Cyan23.6%
Magenta0.0%
Yellow62.2%
Key (black)11.8%

Total ink coverage is 98%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#ace155 text on a black background

contrast 13.66:1

Card sample

#ace155 text on a white background

contrast 1.54:1

Card sample

#ace155 on grey

1.40:1

#ace155 on its own surface

1.46:1

#ace155 on its dark surface

10.36:1

CSS3 live lab

Text font color

The quick brown fox

color: #ace155;
Background color
Panel with #ace155 background
background-color: #ace155;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #ace155;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(172, 225, 85, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(172, 225, 85, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ace155;
background: linear-gradient(135deg, #ace155, #55E15B);
Gradient text

Gradient headline

background: linear-gradient(90deg, #ace155, #55E17E);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #ace155;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #ace155;
caret-color: #ace155;
Left rule
Pull quote or callout
border-left: 4px solid #ace155;
Ring + tint
Selected chip
background: #F4FBE9;
box-shadow: inset 0 0 0 2px #ace155;
Conic badge
68%
background: conic-gradient(#ace155 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #ace155 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, 225, 85, 0.5)
rgb(172 225 85 / 50%)
#ace15580
hsl(83 70% 61% / 50%)
color-mix(in srgb, #ace155 50%, transparent)
Alpha8-digit hexFlat on white
10%#ace1551a#F7FCEE
20%#ace15533#EEF9DD
40%#ace15566#DEF3BB
60%#ace15599#CDED99
80%#ace155cc#BDE777

Gradients from #ace155

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, #C5EA89, #ace155 45%, #4B6C13);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #ace155, #3BDC50);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #ace155, #8A55E1);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #D2EFA3 0%, #ace155 45%, #4B6C13 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F8FAF4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #E9D380 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #74E66F 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #4B6C13 0%, transparent 65%), #ace155;

Monochromatic scale

Palettes built from #ace155

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.

#ace155 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

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 13.66:1.

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.

#ace155, answered

What color is #ace155?

#ace155 is a balanced vivid green, closest to Yellow Green (ΔE2000 5.1). It sits at 83° on the hue wheel with 70% saturation and 61% lightness, which reads as neutral.

What is the RGB value of #ace155?

rgb(172, 225, 85) — 172 red, 225 green and 85 blue out of 255, or 67.5% / 88.2% / 33.3% by channel.

What is #ace155 in HSL and HSV?

hsl(83, 70%, 61%) and hsv(83, 62%, 88%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #ace155 a light or a dark color?

It is a light color. Relative luminance is 0.6328 and perceived brightness is 78%, so black text on it reaches 13.66:1.

Should I use black or white text on #ace155?

Black. It scores 13.66:1 against #ace155, versus 1.54:1 for white — AAA at any size.

Is #ace155 accessible on a white background?

#ace155 on white scores 1.54:1, which fails WCAG AA at every size. Darken it to #598117 to reach 4.5:1, or #415F11 for 7:1.

What is the complementary color of #ace155?

#8A55E1 sits directly opposite on the wheel. Softer options are the split-complements #5566E1 and #D055E1, which give the same contrast with far less vibration.

What colors go well with #ace155?

For interface work: #F8FAF4 as the surface, #DCEDC0 for borders, #7D9B4B for secondary text, #6451E5 as an accent and #4B6C13 for hover and pressed states. For a palette, the analogous pair #E1D055 and #66E155 stays calm, while #8A55E1 is the loudest partner.

What is #ace155 in CMYK for printing?

cmyk(24%, 0%, 62%, 12%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #ace155 warm or cool?

Neutral — it scores 44 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #DFE155; nudged cooler, #78E353.

Which Tailwind color is closest to #ace155?

The lime family — its 500 step is #84cc16, ΔE2000 6.8 away. That is a visible difference, so define #ace155 as a custom token rather than reaching for the built-in.

How do I use #ace155 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#ace155] or text-[#ace155], 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 #ace155 with 50% opacity?

rgba(172, 225, 85, 0.5), or #ace15580 in eight-digit hex. Over white that composites to #D6F0AA; over black, #56712B.

Is #ace155 a web-safe color?

No. The nearest web-safe colour is #99CC66, ΔE2000 6.8 away. The palette only matters for legacy displays and some email clients now.

What does the color #ace155 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 #ace155?

The safest is same-hue elevation: linear-gradient(135deg, #C5EA89, #ace155 45%, #4B6C13). For more colour, a short hue run to #3BDC50 keeps it rich without turning muddy.

Work with #ace155 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #ace155 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.