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green · cool

#3eb17f

a balanced, vivid green · cool · closest name: Medium Sea Green

Token name suggestion: Atlas Moss

RGB
62, 177, 127
HSL
154°, 48%, 47%
CMYK
65, 0, 28, 31
Luminance
0.3400

#3eb17f is a balanced vivid green, 154° on the wheel and 77/100 on the cool side. Put black text on it (7.80:1). As text it scores 2.69:1 on white — use #2E845F instead. Nearest name is Medium Sea Green, nearest Tailwind family is emerald.

hsl(154 48% 47%)rgb(62 177 127)Base step 600AAA inkCool

At a glance

Every number on this page in one read: what #3eb17f is made of, how bright it looks, and which way it leans.

Hex
#3eb17f
Hue
154°
green
Saturation
48%
vivid
Lightness
47%
balanced
Brightness
69%
HSV value
Perceived
57%
weighted brightness
Luminance
0.3400
WCAG relative
Temperature
Cool
77/100 cool
Color family
Green
Tone
Vivid
Best ink
Black
7.80:1
Closest name
Medium Sea Green
ΔE2000 3.6
Chroma
47.1
LCH, 0–130ish
OKLCH L
0.682
perceptual lightness
Tailwind
emerald
500 · ΔE 3
Web-safe
#339966
nearest of 216
Where it sits
Hue154° of 360°
Saturation48%
Lightness47%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #3eb17f.

Temperature
Warm ← → Cool77% 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
Red3%
Green92%
Blue5%

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

Every format

HEX#3eb17f
HEX (8-digit)#3eb17fff
RGBrgb(62, 177, 127)
RGBArgba(62, 177, 127, 1)
HSLhsl(154, 48%, 47%)
HSV / HSBhsv(154, 65%, 69%)
HWBhwb(154 24% 31%)
CMYKcmyk(65%, 0%, 28%, 31%)
LABlab(65.0 -44.1 16.3)
LCHlch(65.0 47.1 159.7)
OKLCHoklch(0.682 0.128 161.0)
XYZ (D65)xyz(21.54, 34.00, 25.50)
Decimal4108671
Display P3color(display-p3 0.243 0.694 0.498)
Web-safe#339966

Copy-ready code

every platformclick to select
/* CSS */
color: #3eb17f;
background-color: #3eb17f;
/* CSS custom property */
--brand: #3eb17f;
/* Tailwind (arbitrary) */
class="text-[#3eb17f] bg-[#3eb17f]"
/* SCSS */
$brand: #3eb17f;
/* SwiftUI */
Color(red: 0.243, green: 0.694, blue: 0.498)
/* UIKit */
UIColor(red: 0.243, green: 0.694, blue: 0.498, alpha: 1)
/* Android XML */
<color name="brand">#3EB17F</color>
/* Android Compose */
Color(0xFF3EB17F)
/* Flutter */
Color(0xFF3EB17F)
/* Python / OpenCV (BGR) */
(127, 177, 62)
/* Python / PIL (RGB) */
(62, 177, 127)
/* Java AWT */
new Color(62, 177, 127)
/* .NET */
Color.FromArgb(255, 62, 177, 127)
/* OpenGL / Unity (0–1) */
(0.2431f, 0.6941f, 0.4980f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{62,177,127}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #3eb17f 85%, white);
border-color: color-mix(in oklab, #3eb17f 40%, transparent);
/* theme-aware in one line */
color: light-dark(#215E44, #D3EEE2);
/* relative colour syntax */
--hover: hsl(from #3eb17f 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: #F4FAF8;
  --brand-100: #EAF5F0;
  --brand-200: #D0ECE0;
  --brand-300: #ACE2CA;
  --brand-400: #82D3B0;
  --brand-500: #59C596;
  --brand-600: #3eb17f;
  --brand-700: #35976C;
  --brand-800: #2A7957;
  --brand-900: #225841;
  --brand-950: #153728;
  --brand: #3eb17f;
  --brand-ink: #000000;
  --brand-surface: #F4FAF8;
  --brand-border: #C3EAD9;
  --brand-hover: #35976C;
  --brand-pressed: #2C7C59;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #14241D;
    --brand-ink: #D3EEE2;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4FAF8',
        100: '#EAF5F0',
        200: '#D0ECE0',
        300: '#ACE2CA',
        400: '#82D3B0',
        500: '#59C596',
        600: '#3eb17f',
        700: '#35976C',
        800: '#2A7957',
        900: '#225841',
        950: '#153728',
        DEFAULT: '#3eb17f',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4FAF8,
  '100': #EAF5F0,
  '200': #D0ECE0,
  '300': #ACE2CA,
  '400': #82D3B0,
  '500': #59C596,
  '600': #3eb17f,
  '700': #35976C,
  '800': #2A7957,
  '900': #225841,
  '950': #153728,
);
$brand-base: #3eb17f;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4FAF8", "$type": "color" },
      "100": { "$value": "#EAF5F0", "$type": "color" },
      "200": { "$value": "#D0ECE0", "$type": "color" },
      "300": { "$value": "#ACE2CA", "$type": "color" },
      "400": { "$value": "#82D3B0", "$type": "color" },
      "500": { "$value": "#59C596", "$type": "color" },
      "600": { "$value": "#3eb17f", "$type": "color" },
      "700": { "$value": "#35976C", "$type": "color" },
      "800": { "$value": "#2A7957", "$type": "color" },
      "900": { "$value": "#225841", "$type": "color" },
      "950": { "$value": "#153728", "$type": "color" }
    },
    "brandInk": { "$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 #3eb17f · 7.80:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.69:1
AA fail · AA large fail · AAA fail
Aa
Black text · 7.80:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #3eb17f as text scores 2.69:1 on white and 7.80:1 on black.
Best tinted ink on it, if plain black or white feels flat: #215E44 at 2.84:1.

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
#2E845F · 4.58:1
AA on white−12% L
#2E845F
The quick fox
#226246 · 7.23:1
AAA on white−21% L
#226246
The quick fox
#3eb17f · 7.80:1
AA on blackalready passes
#3eb17f
The quick fox
#3eb17f · 7.80:1
AAA on blackalready passes
#3eb17f

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #3AA677 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
#3eb17f on white: 2.69:1
AA ✗ fail · AA-large · AAA
Aa
#3eb17f on black: 7.80:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #3eb17f as text on that neutral, and that neutral as text on #3eb17f.

NeutralRatioBoth directions
White2.69:1AaAa
Slate 502.57:1AaAa
Slate 1002.46:1AaAa
Slate 2002.18:1AaAa
Slate 3001.81:1AaAa
Slate 4001.05:1AaAa
Slate 5001.77:1AaAa
Slate 6002.81:1AaAa
Slate 7003.85:1AaAa
Slate 8005.43:1AaAa
Slate 9006.63:1AaAa
Black7.80:1AaAa
Colour vision deficiency
true color
protanopia · #AFA47C
deuteranopia · #9F9982
tritanopia · #00B0A3

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. #3eb17f is pinned to step 600; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F4FAF8
#EAF5F0
#D0ECE0
#ACE2CA
#82D3B0
#59C596
#3eb17f
#35976C
#2A7957
#225841
#153728
Base = 600Lightest = 50 · #F4FAF8Darkest = 950 · #153728Text 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 0.032 161.0);
  --brand-100: oklch(0.94 0.051 161.0);
  --brand-200: oklch(0.88 0.077 161.0);
  --brand-300: oklch(0.80 0.100 161.0);
  --brand-400: oklch(0.72 0.118 161.0);
  --brand-500: oklch(0.64 0.128 161.0);
  --brand-600: oklch(0.56 0.128 161.0);
  --brand-700: oklch(0.48 0.120 161.0);
  --brand-800: oklch(0.40 0.107 161.0);
  --brand-900: oklch(0.32 0.089 161.0);
  --brand-950: oklch(0.24 0.070 161.0);
}

Colors that work with #3eb17f

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#F4FAF8
Tinted page background
Border#C3EAD9
Hairlines and dividers
Muted text#4B9B78
Captions on the surface
Accent#B6398F
Second voice, not a rival
Dark variant#215E44
Hover, pressed, headers
Light variant#ECF8F3
Selected rows, tints
Dark surface#14241D
Dark-mode background
Hover#35976C
One step down in lightness
Pressed#2C7C59
Two steps down
Disabled#9EC1B2
Chroma pulled out
Focus ring#39CB8B
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 #3eb17f

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 #215E44
Safe as a 1px border on white
No — use #3AA677

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
  • Weight53/100
  • 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#B13E70
Analogous left#3EB146
Analogous right#3EAAB1
Split-complement 1#B13EAA
Split-complement 2#B1463E
Triadic 1#7F3EB1
Triadic 2#B17F3E
Tetradic#463EB1
On the wheel
Base+30°−30°+120°+240°+180°154°

#3eb17f sits at 154°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red24.3%
Green69.4%
Blue49.8%
R · 0–255
62
0x3e
G · 0–255
177
0xb1
B · 0–255
127
0x7f

CMYK percentages

Cyan65.0%
Magenta0.0%
Yellow28.2%
Key (black)30.6%

Total ink coverage is 124%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#3eb17f text on a black background

contrast 7.80:1

Card sample

#3eb17f text on a white background

contrast 2.69:1

Card sample

#3eb17f on grey

2.46:1

#3eb17f on its own surface

2.55:1

#3eb17f on its dark surface

6.00:1

CSS3 live lab

Text font color

The quick brown fox

color: #3eb17f;
Background color
Panel with #3eb17f background
background-color: #3eb17f;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #3eb17f;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(62, 177, 127, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(62, 177, 127, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3eb17f;
background: linear-gradient(135deg, #3eb17f, #3E96B1);
Gradient text

Gradient headline

background: linear-gradient(90deg, #3eb17f, #3E7AB1);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #3eb17f;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #3eb17f;
caret-color: #3eb17f;
Left rule
Pull quote or callout
border-left: 4px solid #3eb17f;
Ring + tint
Selected chip
background: #ECF8F3;
box-shadow: inset 0 0 0 2px #3eb17f;
Conic badge
68%
background: conic-gradient(#3eb17f 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #3eb17f 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(62, 177, 127, 0.5)
rgb(62 177 127 / 50%)
#3eb17f80
hsl(154 48% 47% / 50%)
color-mix(in srgb, #3eb17f 50%, transparent)
Alpha8-digit hexFlat on white
10%#3eb17f1a#ECF7F2
20%#3eb17f33#D8EFE5
40%#3eb17f66#B2E0CC
60%#3eb17f99#8BD0B2
80%#3eb17fcc#65C199

Gradients from #3eb17f

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, #64C99D, #3eb17f 45%, #215E44);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #3eb17f, #367B9A);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #3eb17f, #B13E70);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #7AD1AB 0%, #3eb17f 45%, #215E44 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF8, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #5EC65C 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #4DB0C1 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #215E44 0%, transparent 65%), #3eb17f;

Monochromatic scale

Palettes built from #3eb17f

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.

#3eb17f 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 7.80:1.

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.

#3eb17f, answered

What color is #3eb17f?

#3eb17f is a balanced vivid green, closest to Medium Sea Green (ΔE2000 3.6). It sits at 154° on the hue wheel with 48% saturation and 47% lightness, which reads as cool.

What is the RGB value of #3eb17f?

rgb(62, 177, 127) — 62 red, 177 green and 127 blue out of 255, or 24.3% / 69.4% / 49.8% by channel.

What is #3eb17f in HSL and HSV?

hsl(154, 48%, 47%) and hsv(154, 65%, 69%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #3eb17f a light or a dark color?

It is a mid-tone. Relative luminance is 0.3400 and perceived brightness is 57%, so black text on it reaches 7.80:1.

Should I use black or white text on #3eb17f?

Black. It scores 7.80:1 against #3eb17f, versus 2.69:1 for white — AAA at any size.

Is #3eb17f accessible on a white background?

#3eb17f on white scores 2.69:1, which fails WCAG AA at every size. Darken it to #2E845F to reach 4.5:1, or #226246 for 7:1.

What is the complementary color of #3eb17f?

#B13E70 sits directly opposite on the wheel. Softer options are the split-complements #B13EAA and #B1463E, which give the same contrast with far less vibration.

What colors go well with #3eb17f?

For interface work: #F4FAF8 as the surface, #C3EAD9 for borders, #4B9B78 for secondary text, #B6398F as an accent and #215E44 for hover and pressed states. For a palette, the analogous pair #3EB146 and #3EAAB1 stays calm, while #B13E70 is the loudest partner.

What is #3eb17f in CMYK for printing?

cmyk(65%, 0%, 28%, 31%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #3eb17f warm or cool?

Cool — it scores 77 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #3EB155; nudged cooler, #3CB4AB.

Which Tailwind color is closest to #3eb17f?

The emerald family — its 500 step is #10b981, ΔE2000 3 away. That is close enough to swap in without anyone noticing.

How do I use #3eb17f in Tailwind CSS?

Inline it as an arbitrary value with bg-[#3eb17f] or text-[#3eb17f], 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 #3eb17f with 50% opacity?

rgba(62, 177, 127, 0.5), or #3eb17f80 in eight-digit hex. Over white that composites to #9FD8BF; over black, #1F5940.

Is #3eb17f a web-safe color?

No. The nearest web-safe colour is #339966, ΔE2000 7.5 away. The palette only matters for legacy displays and some email clients now.

What does the color #3eb17f 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 #3eb17f?

The safest is same-hue elevation: linear-gradient(135deg, #64C99D, #3eb17f 45%, #215E44). For more colour, a short hue run to #367B9A keeps it rich without turning muddy.

Work with #3eb17f in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #3eb17f at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.