Skip to content
green · neutral

#aeff5f

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

Token name suggestion: Meadow Basil

RGB
174, 255, 95
HSL
90°, 100%, 69%
CMYK
32, 0, 63, 0
Luminance
0.8134

#aeff5f is a light electric green, 90° on the wheel and 50/100 on the cool side. Put black text on it (17.27:1). As text it scores 1.22:1 on white — use #408300 instead. Nearest name is Green Yellow, nearest Tailwind family is lime.

hsl(90 100% 69%)rgb(174 255 95)Base step 400AAA inkNeutral

At a glance

Every number on this page in one read: what #aeff5f is made of, how bright it looks, and which way it leans.

Hex
#aeff5f
Hue
90°
green
Saturation
100%
electric
Lightness
69%
light
Brightness
100%
HSV value
Perceived
86%
weighted brightness
Luminance
0.8134
WCAG relative
Temperature
Neutral
50/100 cool
Color family
Green
Tone
Electric
Best ink
Black
17.27:1
Closest name
Green Yellow
ΔE2000 3.7
Chroma
82.9
LCH, 0–130ish
OKLCH L
0.917
perceptual lightness
Tailwind
lime
500 · ΔE 11.8
Web-safe
#99FF66
nearest of 216
Where it sits
Hue90° of 360°
Saturation100%
Lightness69%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #aeff5f.

Temperature
Warm ← → Cool50% 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%
Green88%
Blue1%

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

Every format

HEX#aeff5f
HEX (8-digit)#aeff5fff
RGBrgb(174, 255, 95)
RGBArgba(174, 255, 95, 1)
HSLhsl(90, 100%, 69%)
HSV / HSBhsv(90, 63%, 100%)
HWBhwb(90 37% 0%)
CMYKcmyk(32%, 0%, 63%, 0%)
LABlab(92.3 -49.4 66.5)
LCHlch(92.3 82.9 126.6)
OKLCHoklch(0.917 0.206 132.1)
XYZ (D65)xyz(55.28, 81.34, 23.61)
Decimal11468639
Display P3color(display-p3 0.682 1.000 0.373)
Web-safe#99FF66

Copy-ready code

every platformclick to select
/* CSS */
color: #aeff5f;
background-color: #aeff5f;
/* CSS custom property */
--brand: #aeff5f;
/* Tailwind (arbitrary) */
class="text-[#aeff5f] bg-[#aeff5f]"
/* SCSS */
$brand: #aeff5f;
/* SwiftUI */
Color(red: 0.682, green: 1.000, blue: 0.373)
/* UIKit */
UIColor(red: 0.682, green: 1.000, blue: 0.373, alpha: 1)
/* Android XML */
<color name="brand">#AEFF5F</color>
/* Android Compose */
Color(0xFFAEFF5F)
/* Flutter */
Color(0xFFAEFF5F)
/* Python / OpenCV (BGR) */
(95, 255, 174)
/* Python / PIL (RGB) */
(174, 255, 95)
/* Java AWT */
new Color(174, 255, 95)
/* .NET */
Color.FromArgb(255, 174, 255, 95)
/* OpenGL / Unity (0–1) */
(0.6824f, 1.0000f, 0.3725f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{174,255,95}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #aeff5f 85%, white);
border-color: color-mix(in oklab, #aeff5f 40%, transparent);
/* theme-aware in one line */
color: light-dark(#3F8000, #E0EED3);
/* relative colour syntax */
--hover: hsl(from #aeff5f 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: #F7FEF1;
  --brand-100: #F0FCE3;
  --brand-200: #DDFCC0;
  --brand-300: #C6FF8F;
  --brand-400: #aeff5f;
  --brand-500: #8DFF1F;
  --brand-600: #79F500;
  --brand-700: #65CC00;
  --brand-800: #51A300;
  --brand-900: #3C7605;
  --brand-950: #264903;
  --brand: #aeff5f;
  --brand-ink: #000000;
  --brand-surface: #F7FAF4;
  --brand-border: #D6EDC0;
  --brand-hover: #9CFF3B;
  --brand-pressed: #8AFF17;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #1C2414;
    --brand-ink: #E0EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F7FEF1',
        100: '#F0FCE3',
        200: '#DDFCC0',
        300: '#C6FF8F',
        400: '#aeff5f',
        500: '#8DFF1F',
        600: '#79F500',
        700: '#65CC00',
        800: '#51A300',
        900: '#3C7605',
        950: '#264903',
        DEFAULT: '#aeff5f',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F7FEF1,
  '100': #F0FCE3,
  '200': #DDFCC0,
  '300': #C6FF8F,
  '400': #aeff5f,
  '500': #8DFF1F,
  '600': #79F500,
  '700': #65CC00,
  '800': #51A300,
  '900': #3C7605,
  '950': #264903,
);
$brand-base: #aeff5f;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F7FEF1", "$type": "color" },
      "100": { "$value": "#F0FCE3", "$type": "color" },
      "200": { "$value": "#DDFCC0", "$type": "color" },
      "300": { "$value": "#C6FF8F", "$type": "color" },
      "400": { "$value": "#aeff5f", "$type": "color" },
      "500": { "$value": "#8DFF1F", "$type": "color" },
      "600": { "$value": "#79F500", "$type": "color" },
      "700": { "$value": "#65CC00", "$type": "color" },
      "800": { "$value": "#51A300", "$type": "color" },
      "900": { "$value": "#3C7605", "$type": "color" },
      "950": { "$value": "#264903", "$type": "color" }
    },
    "brandInk": { "$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 #aeff5f · 17.27:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.22:1
AA fail · AA large fail · AAA fail
Aa
Black text · 17.27:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #aeff5f as text scores 1.22:1 on white and 17.27:1 on black.
Best tinted ink on it, if plain black or white feels flat: #3F8000 at 4.02:1.

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
#408300 · 4.70:1
AA on white−43% L
#408300
The quick fox
#316400 · 7.11:1
AAA on white−49% L
#316400
The quick fox
#aeff5f · 17.27:1
AA on blackalready passes
#aeff5f
The quick fox
#aeff5f · 17.27:1
AAA on blackalready passes
#aeff5f

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #52A600 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
#aeff5f on white: 1.22:1
AA ✗ fail · AA-large · AAA
Aa
#aeff5f on black: 17.27:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #aeff5f as text on that neutral, and that neutral as text on #aeff5f.

NeutralRatioBoth directions
White1.22:1AaAa
Slate 501.16:1AaAa
Slate 1001.11:1AaAa
Slate 2001.01:1AaAa
Slate 3001.22:1AaAa
Slate 4002.11:1AaAa
Slate 5003.91:1AaAa
Slate 6006.23:1AaAa
Slate 7008.52:1AaAa
Slate 80012.03:1AaAa
Slate 90014.68:1AaAa
Black17.27:1AaAa
Colour vision deficiency
true color
protanopia · #FFED4B
deuteranopia · #FEE76C
tritanopia · #B0F5DE

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. #aeff5f 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.

#F7FEF1
#F0FCE3
#DDFCC0
#C6FF8F
#aeff5f
#8DFF1F
#79F500
#65CC00
#51A300
#3C7605
#264903
Base = 400Lightest = 50 · #F7FEF1Darkest = 950 · #264903Text 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 0.052 132.1);
  --brand-100: oklch(0.94 0.083 132.1);
  --brand-200: oklch(0.88 0.124 132.1);
  --brand-300: oklch(0.80 0.161 132.1);
  --brand-400: oklch(0.72 0.190 132.1);
  --brand-500: oklch(0.64 0.206 132.1);
  --brand-600: oklch(0.56 0.206 132.1);
  --brand-700: oklch(0.48 0.194 132.1);
  --brand-800: oklch(0.40 0.173 132.1);
  --brand-900: oklch(0.32 0.144 132.1);
  --brand-950: oklch(0.24 0.114 132.1);
}

Colors that work with #aeff5f

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#F7FAF4
Tinted page background
Border#D6EDC0
Hairlines and dividers
Muted text#729B4B
Captions on the surface
Accent#885FFF
Second voice, not a rival
Dark variant#3F8000
Hover, pressed, headers
Light variant#F2FFE5
Selected rows, tints
Dark surface#1C2414
Dark-mode background
Hover#9CFF3B
One step down in lightness
Pressed#8AFF17
Two steps down
Disabled#E7ECE2
Chroma pulled out
Focus ring#B8FF73
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 #aeff5f

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 #3F8000
Safe as a 1px border on white
No — use #52A600

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
  • Weight31/100
  • 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#B05FFF
Analogous left#FEFF5F
Analogous right#5FFF60
Split-complement 1#605FFF
Split-complement 2#FF5FFE
Triadic 1#5FAEFF
Triadic 2#FF5FAE
Tetradic#5FFEFF
On the wheel
Base+30°−30°+120°+240°+180°90°

#aeff5f sits at 90°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red68.2%
Green100.0%
Blue37.3%
R · 0–255
174
0xae
G · 0–255
255
0xff
B · 0–255
95
0x5f

CMYK percentages

Cyan31.8%
Magenta0.0%
Yellow62.7%
Key (black)0.0%

Total ink coverage is 95%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#aeff5f text on a black background

contrast 17.27:1

Card sample

#aeff5f text on a white background

contrast 1.22:1

Card sample

#aeff5f on grey

1.11:1

#aeff5f on its own surface

1.15:1

#aeff5f on its dark surface

13.16:1

CSS3 live lab

Text font color

The quick brown fox

color: #aeff5f;
Background color
Panel with #aeff5f background
background-color: #aeff5f;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #aeff5f;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(174, 255, 95, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(174, 255, 95, 0.45);
Border & gradient
Gradient panel
border: 3px solid #aeff5f;
background: linear-gradient(135deg, #aeff5f, #5FFF7B);
Gradient text

Gradient headline

background: linear-gradient(90deg, #aeff5f, #5FFFA3);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #aeff5f;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #aeff5f;
caret-color: #aeff5f;
Left rule
Pull quote or callout
border-left: 4px solid #aeff5f;
Ring + tint
Selected chip
background: #F2FFE5;
box-shadow: inset 0 0 0 2px #aeff5f;
Conic badge
68%
background: conic-gradient(#aeff5f 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #aeff5f 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, 255, 95, 0.5)
rgb(174 255 95 / 50%)
#aeff5f80
hsl(90 100% 69% / 50%)
color-mix(in srgb, #aeff5f 50%, transparent)
Alpha8-digit hexFlat on white
10%#aeff5f1a#F7FFEF
20%#aeff5f33#EFFFDF
40%#aeff5f66#DFFFBF
60%#aeff5f99#CEFF9F
80%#aeff5fcc#BEFF7F

Gradients from #aeff5f

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, #CDFF9C, #aeff5f 45%, #3F8000);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #aeff5f, #40FF71);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #aeff5f, #B05FFF);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #DCFFBB 0%, #aeff5f 45%, #3F8000 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F7FAF4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #FFF792 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #7DFF89 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #3F8000 0%, transparent 65%), #aeff5f;

Monochromatic scale

Palettes built from #aeff5f

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.

#aeff5f 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 17.27:1.

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.

#aeff5f, answered

What color is #aeff5f?

#aeff5f is a light electric green, closest to Green Yellow (ΔE2000 3.7). It sits at 90° on the hue wheel with 100% saturation and 69% lightness, which reads as neutral.

What is the RGB value of #aeff5f?

rgb(174, 255, 95) — 174 red, 255 green and 95 blue out of 255, or 68.2% / 100% / 37.3% by channel.

What is #aeff5f in HSL and HSV?

hsl(90, 100%, 69%) and hsv(90, 63%, 100%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #aeff5f a light or a dark color?

It is a light color. Relative luminance is 0.8134 and perceived brightness is 86%, so black text on it reaches 17.27:1.

Should I use black or white text on #aeff5f?

Black. It scores 17.27:1 against #aeff5f, versus 1.22:1 for white — AAA at any size.

Is #aeff5f accessible on a white background?

#aeff5f on white scores 1.22:1, which fails WCAG AA at every size. Darken it to #408300 to reach 4.5:1, or #316400 for 7:1.

What is the complementary color of #aeff5f?

#B05FFF sits directly opposite on the wheel. Softer options are the split-complements #605FFF and #FF5FFE, which give the same contrast with far less vibration.

What colors go well with #aeff5f?

For interface work: #F7FAF4 as the surface, #D6EDC0 for borders, #729B4B for secondary text, #885FFF as an accent and #3F8000 for hover and pressed states. For a palette, the analogous pair #FEFF5F and #5FFF60 stays calm, while #B05FFF is the loudest partner.

What is #aeff5f in CMYK for printing?

cmyk(32%, 0%, 63%, 0%). 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 #aeff5f warm or cool?

Neutral — it scores 50 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #E9FF5F; nudged cooler, #73FF5F.

Which Tailwind color is closest to #aeff5f?

The lime family — its 500 step is #84cc16, ΔE2000 11.8 away. That is a visible difference, so define #aeff5f as a custom token rather than reaching for the built-in.

How do I use #aeff5f in Tailwind CSS?

Inline it as an arbitrary value with bg-[#aeff5f] or text-[#aeff5f], 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 #aeff5f with 50% opacity?

rgba(174, 255, 95, 0.5), or #aeff5f80 in eight-digit hex. Over white that composites to #D7FFAF; over black, #578030.

Is #aeff5f a web-safe color?

No. The nearest web-safe colour is #99FF66, ΔE2000 3 away. The palette only matters for legacy displays and some email clients now.

What does the color #aeff5f 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 #aeff5f?

The safest is same-hue elevation: linear-gradient(135deg, #CDFF9C, #aeff5f 45%, #3F8000). For more colour, a short hue run to #40FF71 keeps it rich without turning muddy.

Work with #aeff5f in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #aeff5f at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.