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green · neutral

#acfc99

a light, electric green · neutral · closest name: Pale Green

Token name suggestion: Linen Fern

RGB
172, 252, 153
HSL
109°, 94%, 79%
CMYK
32, 0, 39, 1
Luminance
0.8069

#acfc99 is a light electric green, 109° on the wheel and 58/100 on the cool side. Put black text on it (17.14:1). As text it scores 1.23:1 on white — use #1D8804 instead. Nearest name is Pale Green, nearest Tailwind family is lime.

hsl(109 94% 79%)rgb(172 252 153)Base step 300AAA inkNeutral

At a glance

Every number on this page in one read: what #acfc99 is made of, how bright it looks, and which way it leans.

Hex
#acfc99
Hue
109°
green
Saturation
94%
electric
Lightness
79%
light
Brightness
99%
HSV value
Perceived
87%
weighted brightness
Luminance
0.8069
WCAG relative
Temperature
Neutral
58/100 cool
Color family
Green
Tone
Electric
Best ink
Black
17.14:1
Closest name
Pale Green
ΔE2000 2.5
Chroma
58.2
LCH, 0–130ish
OKLCH L
0.916
perceptual lightness
Tailwind
lime
500 · ΔE 14.9
Web-safe
#99FF99
nearest of 216
Where it sits
Hue109° of 360°
Saturation94%
Lightness79%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #acfc99.

Temperature
Warm ← → Cool58% 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
Red11%
Green86%
Blue3%

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

Every format

HEX#acfc99
HEX (8-digit)#acfc99ff
RGBrgb(172, 252, 153)
RGBArgba(172, 252, 153, 1)
HSLhsl(109, 94%, 79%)
HSV / HSBhsv(108, 39%, 99%)
HWBhwb(109 60% 1%)
CMYKcmyk(32%, 0%, 39%, 1%)
LABlab(92.0 -42.4 39.8)
LCHlch(92.0 58.2 136.8)
OKLCHoklch(0.916 0.152 139.7)
XYZ (D65)xyz(57.57, 80.69, 42.67)
Decimal11336857
Display P3color(display-p3 0.675 0.988 0.600)
Web-safe#99FF99

Copy-ready code

every platformclick to select
/* CSS */
color: #acfc99;
background-color: #acfc99;
/* CSS custom property */
--brand: #acfc99;
/* Tailwind (arbitrary) */
class="text-[#acfc99] bg-[#acfc99]"
/* SCSS */
$brand: #acfc99;
/* SwiftUI */
Color(red: 0.675, green: 0.988, blue: 0.600)
/* UIKit */
UIColor(red: 0.675, green: 0.988, blue: 0.600, alpha: 1)
/* Android XML */
<color name="brand">#ACFC99</color>
/* Android Compose */
Color(0xFFACFC99)
/* Flutter */
Color(0xFFACFC99)
/* Python / OpenCV (BGR) */
(153, 252, 172)
/* Python / PIL (RGB) */
(172, 252, 153)
/* Java AWT */
new Color(172, 252, 153)
/* .NET */
Color.FromArgb(255, 172, 252, 153)
/* OpenGL / Unity (0–1) */
(0.6745f, 0.9882f, 0.6000f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{172,252,153}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #acfc99 85%, white);
border-color: color-mix(in oklab, #acfc99 40%, transparent);
/* theme-aware in one line */
color: light-dark(#1B7C04, #D8EED3);
/* relative colour syntax */
--hover: hsl(from #acfc99 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: #F4FDF2;
  --brand-100: #E9FBE4;
  --brand-200: #CDFAC2;
  --brand-300: #acfc99;
  --brand-400: #7AFA5B;
  --brand-500: #4EF925;
  --brand-600: #33EE07;
  --brand-700: #2BC606;
  --brand-800: #229F05;
  --brand-900: #1C7208;
  --brand-950: #124705;
  --brand: #acfc99;
  --brand-ink: #000000;
  --brand-surface: #F5FAF4;
  --brand-border: #C8EDC0;
  --brand-hover: #90FB76;
  --brand-pressed: #73FA54;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #172414;
    --brand-ink: #D8EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4FDF2',
        100: '#E9FBE4',
        200: '#CDFAC2',
        300: '#acfc99',
        400: '#7AFA5B',
        500: '#4EF925',
        600: '#33EE07',
        700: '#2BC606',
        800: '#229F05',
        900: '#1C7208',
        950: '#124705',
        DEFAULT: '#acfc99',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4FDF2,
  '100': #E9FBE4,
  '200': #CDFAC2,
  '300': #acfc99,
  '400': #7AFA5B,
  '500': #4EF925,
  '600': #33EE07,
  '700': #2BC606,
  '800': #229F05,
  '900': #1C7208,
  '950': #124705,
);
$brand-base: #acfc99;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4FDF2", "$type": "color" },
      "100": { "$value": "#E9FBE4", "$type": "color" },
      "200": { "$value": "#CDFAC2", "$type": "color" },
      "300": { "$value": "#acfc99", "$type": "color" },
      "400": { "$value": "#7AFA5B", "$type": "color" },
      "500": { "$value": "#4EF925", "$type": "color" },
      "600": { "$value": "#33EE07", "$type": "color" },
      "700": { "$value": "#2BC606", "$type": "color" },
      "800": { "$value": "#229F05", "$type": "color" },
      "900": { "$value": "#1C7208", "$type": "color" },
      "950": { "$value": "#124705", "$type": "color" }
    },
    "brandInk": { "$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 #acfc99 · 17.14:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.23:1
AA fail · AA large fail · AAA fail
Aa
Black text · 17.14:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #acfc99 as text scores 1.23:1 on white and 17.14:1 on black.
Best tinted ink on it, if plain black or white feels flat: #1B7C04 at 4.36:1.

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
#1D8804 · 4.59:1
AA on white−52% L
#1D8804
The quick fox
#166503 · 7.25:1
AAA on white−59% L
#166503
The quick fox
#acfc99 · 17.14:1
AA on blackalready passes
#acfc99
The quick fox
#acfc99 · 17.14:1
AAA on blackalready passes
#acfc99

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #25AA05 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
#acfc99 on white: 1.23:1
AA ✗ fail · AA-large · AAA
Aa
#acfc99 on black: 17.14:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #acfc99 as text on that neutral, and that neutral as text on #acfc99.

NeutralRatioBoth directions
White1.23:1AaAa
Slate 501.17:1AaAa
Slate 1001.12:1AaAa
Slate 2001.01:1AaAa
Slate 3001.21:1AaAa
Slate 4002.09:1AaAa
Slate 5003.88:1AaAa
Slate 6006.18:1AaAa
Slate 7008.45:1AaAa
Slate 80011.94:1AaAa
Slate 90014.57:1AaAa
Black17.14:1AaAa
Colour vision deficiency
true color
protanopia · #FFED92
deuteranopia · #F5E59F
tritanopia · #A7F6E3

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. #acfc99 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.

#F4FDF2
#E9FBE4
#CDFAC2
#acfc99
#7AFA5B
#4EF925
#33EE07
#2BC606
#229F05
#1C7208
#124705
Base = 300Lightest = 50 · #F4FDF2Darkest = 950 · #124705Text 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 0.038 139.7);
  --brand-100: oklch(0.94 0.061 139.7);
  --brand-200: oklch(0.88 0.091 139.7);
  --brand-300: oklch(0.80 0.119 139.7);
  --brand-400: oklch(0.72 0.140 139.7);
  --brand-500: oklch(0.64 0.152 139.7);
  --brand-600: oklch(0.56 0.152 139.7);
  --brand-700: oklch(0.48 0.143 139.7);
  --brand-800: oklch(0.40 0.128 139.7);
  --brand-900: oklch(0.32 0.106 139.7);
  --brand-950: oklch(0.24 0.084 139.7);
}

Colors that work with #acfc99

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#F5FAF4
Tinted page background
Border#C8EDC0
Hairlines and dividers
Muted text#5A9B4B
Captions on the surface
Accent#7102CA
Second voice, not a rival
Dark variant#1B7C04
Hover, pressed, headers
Light variant#EBFEE6
Selected rows, tints
Dark surface#172414
Dark-mode background
Hover#90FB76
One step down in lightness
Pressed#73FA54
Two steps down
Disabled#F3F7F3
Chroma pulled out
Focus ring#BBFFAA
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 #acfc99

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 #1B7C04
Safe as a 1px border on white
No — use #25AA05

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
  • Weight21/100
  • TemperatureNeutral
  • ApproachabilityBalanced

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#E999FC
Analogous left#DDFC99
Analogous right#99FCB7
Split-complement 1#B799FC
Split-complement 2#FC99DD
Triadic 1#99ACFC
Triadic 2#FC99AC
Tetradic#99DDFC
On the wheel
Base+30°−30°+120°+240°+180°109°

#acfc99 sits at 109°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red67.5%
Green98.8%
Blue60.0%
R · 0–255
172
0xac
G · 0–255
252
0xfc
B · 0–255
153
0x99

CMYK percentages

Cyan31.7%
Magenta0.0%
Yellow39.3%
Key (black)1.2%

Total ink coverage is 72%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#acfc99 text on a black background

contrast 17.14:1

Card sample

#acfc99 text on a white background

contrast 1.23:1

Card sample

#acfc99 on grey

1.12:1

#acfc99 on its own surface

1.16:1

#acfc99 on its dark surface

13.19:1

CSS3 live lab

Text font color

The quick brown fox

color: #acfc99;
Background color
Panel with #acfc99 background
background-color: #acfc99;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #acfc99;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(172, 252, 153, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(172, 252, 153, 0.45);
Border & gradient
Gradient panel
border: 3px solid #acfc99;
background: linear-gradient(135deg, #acfc99, #99FCC8);
Gradient text

Gradient headline

background: linear-gradient(90deg, #acfc99, #99FCE1);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #acfc99;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #acfc99;
caret-color: #acfc99;
Left rule
Pull quote or callout
border-left: 4px solid #acfc99;
Ring + tint
Selected chip
background: #EBFEE6;
box-shadow: inset 0 0 0 2px #acfc99;
Conic badge
68%
background: conic-gradient(#acfc99 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #acfc99 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, 252, 153, 0.5)
rgb(172 252 153 / 50%)
#acfc9980
hsl(109 94% 79% / 50%)
color-mix(in srgb, #acfc99 50%, transparent)
Alpha8-digit hexFlat on white
10%#acfc991a#F7FFF5
20%#acfc9933#EEFEEB
40%#acfc9966#DEFED6
60%#acfc9999#CDFDC2
80%#acfc99cc#BDFDAD

Gradients from #acfc99

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, #DCFED4, #acfc99 45%, #1B7C04);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #acfc99, #7BFBC3);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #acfc99, #E999FC);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #F3FFF0 0%, #acfc99 45%, #1B7C04 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F5FAF4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #F2FDCA 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #B7FDD2 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #1B7C04 0%, transparent 65%), #acfc99;

Monochromatic scale

Palettes built from #acfc99

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.

#acfc99 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 17.14:1.

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.

#acfc99, answered

What color is #acfc99?

#acfc99 is a light electric green, closest to Pale Green (ΔE2000 2.5). It sits at 109° on the hue wheel with 94% saturation and 79% lightness, which reads as neutral.

What is the RGB value of #acfc99?

rgb(172, 252, 153) — 172 red, 252 green and 153 blue out of 255, or 67.5% / 98.8% / 60% by channel.

What is #acfc99 in HSL and HSV?

hsl(109, 94%, 79%) and hsv(108, 39%, 99%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #acfc99 a light or a dark color?

It is a light color. Relative luminance is 0.8069 and perceived brightness is 87%, so black text on it reaches 17.14:1.

Should I use black or white text on #acfc99?

Black. It scores 17.14:1 against #acfc99, versus 1.23:1 for white — AAA at any size.

Is #acfc99 accessible on a white background?

#acfc99 on white scores 1.23:1, which fails WCAG AA at every size. Darken it to #1D8804 to reach 4.5:1, or #166503 for 7:1.

What is the complementary color of #acfc99?

#E999FC sits directly opposite on the wheel. Softer options are the split-complements #B799FC and #FC99DD, which give the same contrast with far less vibration.

What colors go well with #acfc99?

For interface work: #F5FAF4 as the surface, #C8EDC0 for borders, #5A9B4B for secondary text, #7102CA as an accent and #1B7C04 for hover and pressed states. For a palette, the analogous pair #DDFC99 and #99FCB7 stays calm, while #E999FC is the loudest partner.

What is #acfc99 in CMYK for printing?

cmyk(32%, 0%, 39%, 1%). 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 #acfc99 warm or cool?

Neutral — it scores 58 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #D0FC99; nudged cooler, #98FDAA.

Which Tailwind color is closest to #acfc99?

The lime family — its 500 step is #84cc16, ΔE2000 14.9 away. That is a visible difference, so define #acfc99 as a custom token rather than reaching for the built-in.

How do I use #acfc99 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#acfc99] or text-[#acfc99], 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 #acfc99 with 50% opacity?

rgba(172, 252, 153, 0.5), or #acfc9980 in eight-digit hex. Over white that composites to #D6FECC; over black, #567E4D.

Is #acfc99 a web-safe color?

No. The nearest web-safe colour is #99FF99, ΔE2000 2.6 away. The palette only matters for legacy displays and some email clients now.

What does the color #acfc99 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 #acfc99?

The safest is same-hue elevation: linear-gradient(135deg, #DCFED4, #acfc99 45%, #1B7C04). For more colour, a short hue run to #7BFBC3 keeps it rich without turning muddy.

Work with #acfc99 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #acfc99 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.