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green · cool

#3dec87

a balanced, electric green · cool · closest name: Medium Spring Green

Token name suggestion: Atlas Fern

RGB
61, 236, 135
HSL
145°, 82%, 58%
CMYK
74, 0, 43, 8
Luminance
0.6273

#3dec87 is a balanced electric green, 145° on the wheel and 73/100 on the cool side. Put black text on it (13.55:1). As text it scores 1.55:1 on white — use #0D8841 instead. Nearest name is Medium Spring Green, nearest Tailwind family is green.

hsl(145 82% 58%)rgb(61 236 135)Base step 500AAA inkCool

At a glance

Every number on this page in one read: what #3dec87 is made of, how bright it looks, and which way it leans.

Hex
#3dec87
Hue
145°
green
Saturation
82%
electric
Lightness
58%
balanced
Brightness
93%
HSV value
Perceived
74%
weighted brightness
Luminance
0.6273
WCAG relative
Temperature
Cool
73/100 cool
Color family
Green
Tone
Electric
Best ink
Black
13.55:1
Closest name
Medium Spring Green
ΔE2000 3.7
Chroma
74.9
LCH, 0–130ish
OKLCH L
0.834
perceptual lightness
Tailwind
green
500 · ΔE 9.6
Web-safe
#33FF99
nearest of 216
Where it sits
Hue145° of 360°
Saturation82%
Lightness58%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #3dec87.

Temperature
Warm ← → Cool73% 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
Red2%
Green96%
Blue3%

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

Every format

HEX#3dec87
HEX (8-digit)#3dec87ff
RGBrgb(61, 236, 135)
RGBArgba(61, 236, 135, 1)
HSLhsl(145, 82%, 58%)
HSV / HSBhsv(145, 74%, 93%)
HWBhwb(145 24% 7%)
CMYKcmyk(74%, 0%, 43%, 8%)
LABlab(83.3 -65.3 36.7)
LCHlch(83.3 74.9 150.6)
OKLCHoklch(0.834 0.198 152.7)
XYZ (D65)xyz(36.29, 62.73, 33.11)
Decimal4058247
Display P3color(display-p3 0.239 0.925 0.529)
Web-safe#33FF99

Copy-ready code

every platformclick to select
/* CSS */
color: #3dec87;
background-color: #3dec87;
/* CSS custom property */
--brand: #3dec87;
/* Tailwind (arbitrary) */
class="text-[#3dec87] bg-[#3dec87]"
/* SCSS */
$brand: #3dec87;
/* SwiftUI */
Color(red: 0.239, green: 0.925, blue: 0.529)
/* UIKit */
UIColor(red: 0.239, green: 0.925, blue: 0.529, alpha: 1)
/* Android XML */
<color name="brand">#3DEC87</color>
/* Android Compose */
Color(0xFF3DEC87)
/* Flutter */
Color(0xFF3DEC87)
/* Python / OpenCV (BGR) */
(135, 236, 61)
/* Python / PIL (RGB) */
(61, 236, 135)
/* Java AWT */
new Color(61, 236, 135)
/* .NET */
Color.FromArgb(255, 61, 236, 135)
/* OpenGL / Unity (0–1) */
(0.2392f, 0.9255f, 0.5294f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{61,236,135}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #3dec87 85%, white);
border-color: color-mix(in oklab, #3dec87 40%, transparent);
/* theme-aware in one line */
color: light-dark(#0B7438, #D3EEDE);
/* relative colour syntax */
--hover: hsl(from #3dec87 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: #F2FCF7;
  --brand-100: #E6FAEE;
  --brand-200: #C6F6DA;
  --brand-300: #99F5C0;
  --brand-400: #66F0A0;
  --brand-500: #3dec87;
  --brand-600: #16DF6B;
  --brand-700: #12BA59;
  --brand-800: #0F9547;
  --brand-900: #0F6B36;
  --brand-950: #094322;
  --brand: #3dec87;
  --brand-ink: #000000;
  --brand-surface: #F4FAF7;
  --brand-border: #C0EDD3;
  --brand-hover: #1CE973;
  --brand-pressed: #14CD63;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #14241B;
    --brand-ink: #D3EEDE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F2FCF7',
        100: '#E6FAEE',
        200: '#C6F6DA',
        300: '#99F5C0',
        400: '#66F0A0',
        500: '#3dec87',
        600: '#16DF6B',
        700: '#12BA59',
        800: '#0F9547',
        900: '#0F6B36',
        950: '#094322',
        DEFAULT: '#3dec87',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2FCF7,
  '100': #E6FAEE,
  '200': #C6F6DA,
  '300': #99F5C0,
  '400': #66F0A0,
  '500': #3dec87,
  '600': #16DF6B,
  '700': #12BA59,
  '800': #0F9547,
  '900': #0F6B36,
  '950': #094322,
);
$brand-base: #3dec87;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F2FCF7", "$type": "color" },
      "100": { "$value": "#E6FAEE", "$type": "color" },
      "200": { "$value": "#C6F6DA", "$type": "color" },
      "300": { "$value": "#99F5C0", "$type": "color" },
      "400": { "$value": "#66F0A0", "$type": "color" },
      "500": { "$value": "#3dec87", "$type": "color" },
      "600": { "$value": "#16DF6B", "$type": "color" },
      "700": { "$value": "#12BA59", "$type": "color" },
      "800": { "$value": "#0F9547", "$type": "color" },
      "900": { "$value": "#0F6B36", "$type": "color" },
      "950": { "$value": "#094322", "$type": "color" }
    },
    "brandInk": { "$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 #3dec87 · 13.55:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.55:1
AA fail · AA large fail · AAA fail
Aa
Black text · 13.55:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #3dec87 as text scores 1.55:1 on white and 13.55:1 on black.
Best tinted ink on it, if plain black or white feels flat: #0B7438 at 3.80:1.

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
#0D8841 · 4.55:1
AA on white−29% L
#0D8841
The quick fox
#0A6731 · 7.01:1
AAA on white−36% L
#0A6731
The quick fox
#3dec87 · 13.55:1
AA on blackalready passes
#3dec87
The quick fox
#3dec87 · 13.55:1
AAA on blackalready passes
#3dec87

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #10A851 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
#3dec87 on white: 1.55:1
AA ✗ fail · AA-large · AAA
Aa
#3dec87 on black: 13.55:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #3dec87 as text on that neutral, and that neutral as text on #3dec87.

NeutralRatioBoth directions
White1.55:1AaAa
Slate 501.48:1AaAa
Slate 1001.42:1AaAa
Slate 2001.26:1AaAa
Slate 3001.04:1AaAa
Slate 4001.65:1AaAa
Slate 5003.07:1AaAa
Slate 6004.89:1AaAa
Slate 7006.68:1AaAa
Slate 8009.44:1AaAa
Slate 90011.52:1AaAa
Black13.55:1AaAa
Colour vision deficiency
true color
protanopia · #ECD880
deuteranopia · #D8CA8E
tritanopia · #00E9D3

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. #3dec87 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.

#F2FCF7
#E6FAEE
#C6F6DA
#99F5C0
#66F0A0
#3dec87
#16DF6B
#12BA59
#0F9547
#0F6B36
#094322
Base = 500Lightest = 50 · #F2FCF7Darkest = 950 · #094322Text 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 0.049 152.7);
  --brand-100: oklch(0.94 0.079 152.7);
  --brand-200: oklch(0.88 0.119 152.7);
  --brand-300: oklch(0.80 0.154 152.7);
  --brand-400: oklch(0.72 0.182 152.7);
  --brand-500: oklch(0.64 0.198 152.7);
  --brand-600: oklch(0.56 0.198 152.7);
  --brand-700: oklch(0.48 0.186 152.7);
  --brand-800: oklch(0.40 0.166 152.7);
  --brand-900: oklch(0.32 0.138 152.7);
  --brand-950: oklch(0.24 0.109 152.7);
}

Colors that work with #3dec87

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#F4FAF7
Tinted page background
Border#C0EDD3
Hairlines and dividers
Muted text#4B9B6D
Captions on the surface
Accent#F039D0
Second voice, not a rival
Dark variant#0B7438
Hover, pressed, headers
Light variant#E8FDF1
Selected rows, tints
Dark surface#14241B
Dark-mode background
Hover#1CE973
One step down in lightness
Pressed#14CD63
Two steps down
Disabled#C1D8CB
Chroma pulled out
Focus ring#46F791
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 #3dec87

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 #0B7438
Safe as a 1px border on white
No — use #10A851

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 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
  • FormalityLow
  • EnergyHigh
  • Weight42/100
  • 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#EC3DA2
Analogous left#4AEC3D
Analogous right#3DECDF
Split-complement 1#DF3DEC
Split-complement 2#EC3D4A
Triadic 1#873DEC
Triadic 2#EC873D
Tetradic#3D4AEC
On the wheel
Base+30°−30°+120°+240°+180°145°

#3dec87 sits at 145°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red23.9%
Green92.5%
Blue52.9%
R · 0–255
61
0x3d
G · 0–255
236
0xec
B · 0–255
135
0x87

CMYK percentages

Cyan74.2%
Magenta0.0%
Yellow42.8%
Key (black)7.5%

Total ink coverage is 125%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#3dec87 text on a black background

contrast 13.55:1

Card sample

#3dec87 text on a white background

contrast 1.55:1

Card sample

#3dec87 on grey

1.42:1

#3dec87 on its own surface

1.47:1

#3dec87 on its dark surface

10.44:1

CSS3 live lab

Text font color

The quick brown fox

color: #3dec87;
Background color
Panel with #3dec87 background
background-color: #3dec87;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #3dec87;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(61, 236, 135, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(61, 236, 135, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3dec87;
background: linear-gradient(135deg, #3dec87, #3DDCEC);
Gradient text

Gradient headline

background: linear-gradient(90deg, #3dec87, #3DB0EC);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #3dec87;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #3dec87;
caret-color: #3dec87;
Left rule
Pull quote or callout
border-left: 4px solid #3dec87;
Ring + tint
Selected chip
background: #E8FDF1;
box-shadow: inset 0 0 0 2px #3dec87;
Conic badge
68%
background: conic-gradient(#3dec87 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #3dec87 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(61, 236, 135, 0.5)
rgb(61 236 135 / 50%)
#3dec8780
hsl(145 82% 58% / 50%)
color-mix(in srgb, #3dec87 50%, transparent)
Alpha8-digit hexFlat on white
10%#3dec871a#ECFDF3
20%#3dec8733#D8FBE7
40%#3dec8766#B1F7CF
60%#3dec8799#8BF4B7
80%#3dec87cc#64F09F

Gradients from #3dec87

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, #75F1A9, #3dec87 45%, #0B7438);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #3dec87, #21C7E9);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #3dec87, #EC3DA2);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #90F4BB 0%, #3dec87 45%, #0B7438 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF7, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #81F16B 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #59EEEF 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #0B7438 0%, transparent 65%), #3dec87;

Monochromatic scale

Palettes built from #3dec87

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.

#3dec87 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

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 13.55:1.

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.

#3dec87, answered

What color is #3dec87?

#3dec87 is a balanced electric green, closest to Medium Spring Green (ΔE2000 3.7). It sits at 145° on the hue wheel with 82% saturation and 58% lightness, which reads as cool.

What is the RGB value of #3dec87?

rgb(61, 236, 135) — 61 red, 236 green and 135 blue out of 255, or 23.9% / 92.5% / 52.9% by channel.

What is #3dec87 in HSL and HSV?

hsl(145, 82%, 58%) and hsv(145, 74%, 93%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #3dec87 a light or a dark color?

It is a light color. Relative luminance is 0.6273 and perceived brightness is 74%, so black text on it reaches 13.55:1.

Should I use black or white text on #3dec87?

Black. It scores 13.55:1 against #3dec87, versus 1.55:1 for white — AAA at any size.

Is #3dec87 accessible on a white background?

#3dec87 on white scores 1.55:1, which fails WCAG AA at every size. Darken it to #0D8841 to reach 4.5:1, or #0A6731 for 7:1.

What is the complementary color of #3dec87?

#EC3DA2 sits directly opposite on the wheel. Softer options are the split-complements #DF3DEC and #EC3D4A, which give the same contrast with far less vibration.

What colors go well with #3dec87?

For interface work: #F4FAF7 as the surface, #C0EDD3 for borders, #4B9B6D for secondary text, #F039D0 as an accent and #0B7438 for hover and pressed states. For a palette, the analogous pair #4AEC3D and #3DECDF stays calm, while #EC3DA2 is the loudest partner.

What is #3dec87 in CMYK for printing?

cmyk(74%, 0%, 43%, 8%). 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 #3dec87 warm or cool?

Cool — it scores 73 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #3DEC47; nudged cooler, #3BEEC8.

Which Tailwind color is closest to #3dec87?

The green family — its 500 step is #22c55e, ΔE2000 9.6 away. That is a visible difference, so define #3dec87 as a custom token rather than reaching for the built-in.

How do I use #3dec87 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#3dec87] or text-[#3dec87], 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 #3dec87 with 50% opacity?

rgba(61, 236, 135, 0.5), or #3dec8780 in eight-digit hex. Over white that composites to #9EF6C3; over black, #1F7644.

Is #3dec87 a web-safe color?

No. The nearest web-safe colour is #33FF99, ΔE2000 4.1 away. The palette only matters for legacy displays and some email clients now.

What does the color #3dec87 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 #3dec87?

The safest is same-hue elevation: linear-gradient(135deg, #75F1A9, #3dec87 45%, #0B7438). For more colour, a short hue run to #21C7E9 keeps it rich without turning muddy.

Work with #3dec87 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #3dec87 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.