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green · cool

#78cd9b

a balanced, vivid green · cool · closest name: Medium Aqua Marine

Token name suggestion: Atlas Moss

RGB
120, 205, 155
HSL
145°, 46%, 64%
CMYK
42, 0, 24, 20
Luminance
0.5002

#78cd9b is a balanced vivid green, 145° on the wheel and 73/100 on the cool side. Put black text on it (11.00:1). As text it scores 1.91:1 on white — use #318554 instead. Nearest name is Medium Aqua Marine, nearest Tailwind family is emerald.

hsl(145 46% 64%)rgb(120 205 155)Base step 400AAA inkCool

At a glance

Every number on this page in one read: what #78cd9b is made of, how bright it looks, and which way it leans.

Hex
#78cd9b
Hue
145°
green
Saturation
46%
vivid
Lightness
64%
balanced
Brightness
80%
HSV value
Perceived
70%
weighted brightness
Luminance
0.5002
WCAG relative
Temperature
Cool
73/100 cool
Color family
Green
Tone
Vivid
Best ink
Black
11.00:1
Closest name
Medium Aqua Marine
ΔE2000 5
Chroma
40.6
LCH, 0–130ish
OKLCH L
0.781
perceptual lightness
Tailwind
emerald
500 · ΔE 8.8
Web-safe
#66CC99
nearest of 216
Where it sits
Hue145° of 360°
Saturation46%
Lightness64%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #78cd9b.

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
Red8%
Green87%
Blue5%

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

Every format

HEX#78cd9b
HEX (8-digit)#78cd9bff
RGBrgb(120, 205, 155)
RGBArgba(120, 205, 155, 1)
HSLhsl(145, 46%, 64%)
HSV / HSBhsv(145, 41%, 80%)
HWBhwb(145 47% 20%)
CMYKcmyk(42%, 0%, 24%, 20%)
LABlab(76.1 -36.9 17.0)
LCHlch(76.1 40.6 155.3)
OKLCHoklch(0.781 0.110 156.8)
XYZ (D65)xyz(35.49, 50.02, 38.79)
Decimal7916955
Display P3color(display-p3 0.471 0.804 0.608)
Web-safe#66CC99

Copy-ready code

every platformclick to select
/* CSS */
color: #78cd9b;
background-color: #78cd9b;
/* CSS custom property */
--brand: #78cd9b;
/* Tailwind (arbitrary) */
class="text-[#78cd9b] bg-[#78cd9b]"
/* SCSS */
$brand: #78cd9b;
/* SwiftUI */
Color(red: 0.471, green: 0.804, blue: 0.608)
/* UIKit */
UIColor(red: 0.471, green: 0.804, blue: 0.608, alpha: 1)
/* Android XML */
<color name="brand">#78CD9B</color>
/* Android Compose */
Color(0xFF78CD9B)
/* Flutter */
Color(0xFF78CD9B)
/* Python / OpenCV (BGR) */
(155, 205, 120)
/* Python / PIL (RGB) */
(120, 205, 155)
/* Java AWT */
new Color(120, 205, 155)
/* .NET */
Color.FromArgb(255, 120, 205, 155)
/* OpenGL / Unity (0–1) */
(0.4706f, 0.8039f, 0.6078f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{120,205,155}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #78cd9b 85%, white);
border-color: color-mix(in oklab, #78cd9b 40%, transparent);
/* theme-aware in one line */
color: light-dark(#225D3B, #D3EEDE);
/* relative colour syntax */
--hover: hsl(from #78cd9b 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: #F5FAF7;
  --brand-100: #EAF5EF;
  --brand-200: #D0EBDB;
  --brand-300: #ADE1C2;
  --brand-400: #78cd9b;
  --brand-500: #5BC286;
  --brand-600: #42B370;
  --brand-700: #37955E;
  --brand-800: #2C774B;
  --brand-900: #235739;
  --brand-950: #163623;
  --brand: #78cd9b;
  --brand-ink: #000000;
  --brand-surface: #F4FAF7;
  --brand-border: #C3E9D3;
  --brand-hover: #5EC388;
  --brand-pressed: #45B974;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #14241B;
    --brand-ink: #D3EEDE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5FAF7',
        100: '#EAF5EF',
        200: '#D0EBDB',
        300: '#ADE1C2',
        400: '#78cd9b',
        500: '#5BC286',
        600: '#42B370',
        700: '#37955E',
        800: '#2C774B',
        900: '#235739',
        950: '#163623',
        DEFAULT: '#78cd9b',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5FAF7,
  '100': #EAF5EF,
  '200': #D0EBDB,
  '300': #ADE1C2,
  '400': #78cd9b,
  '500': #5BC286,
  '600': #42B370,
  '700': #37955E,
  '800': #2C774B,
  '900': #235739,
  '950': #163623,
);
$brand-base: #78cd9b;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F5FAF7", "$type": "color" },
      "100": { "$value": "#EAF5EF", "$type": "color" },
      "200": { "$value": "#D0EBDB", "$type": "color" },
      "300": { "$value": "#ADE1C2", "$type": "color" },
      "400": { "$value": "#78cd9b", "$type": "color" },
      "500": { "$value": "#5BC286", "$type": "color" },
      "600": { "$value": "#42B370", "$type": "color" },
      "700": { "$value": "#37955E", "$type": "color" },
      "800": { "$value": "#2C774B", "$type": "color" },
      "900": { "$value": "#235739", "$type": "color" },
      "950": { "$value": "#163623", "$type": "color" }
    },
    "brandInk": { "$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 #78cd9b · 11.00:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.91:1
AA fail · AA large fail · AAA fail
Aa
Black text · 11.00:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #78cd9b as text scores 1.91:1 on white and 11.00:1 on black.
Best tinted ink on it, if plain black or white feels flat: #225D3B at 4.08:1.

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
#318554 · 4.55:1
AA on white−28% L
#318554
The quick fox
#25633F · 7.15:1
AAA on white−37% L
#25633F
The quick fox
#78cd9b · 11.00:1
AA on blackalready passes
#78cd9b
The quick fox
#78cd9b · 11.00:1
AAA on blackalready passes
#78cd9b

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #3EA669 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
#78cd9b on white: 1.91:1
AA ✗ fail · AA-large · AAA
Aa
#78cd9b on black: 11.00:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #78cd9b as text on that neutral, and that neutral as text on #78cd9b.

NeutralRatioBoth directions
White1.91:1AaAa
Slate 501.82:1AaAa
Slate 1001.74:1AaAa
Slate 2001.55:1AaAa
Slate 3001.29:1AaAa
Slate 4001.34:1AaAa
Slate 5002.49:1AaAa
Slate 6003.97:1AaAa
Slate 7005.43:1AaAa
Slate 8007.67:1AaAa
Slate 9009.36:1AaAa
Black11.00:1AaAa
Colour vision deficiency
true color
protanopia · #CCC198
deuteranopia · #BFB89E
tritanopia · #65CCBF

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. #78cd9b 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.

#F5FAF7
#EAF5EF
#D0EBDB
#ADE1C2
#78cd9b
#5BC286
#42B370
#37955E
#2C774B
#235739
#163623
Base = 400Lightest = 50 · #F5FAF7Darkest = 950 · #163623Text 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 0.028 156.8);
  --brand-100: oklch(0.94 0.044 156.8);
  --brand-200: oklch(0.88 0.066 156.8);
  --brand-300: oklch(0.80 0.086 156.8);
  --brand-400: oklch(0.72 0.101 156.8);
  --brand-500: oklch(0.64 0.110 156.8);
  --brand-600: oklch(0.56 0.110 156.8);
  --brand-700: oklch(0.48 0.104 156.8);
  --brand-800: oklch(0.40 0.093 156.8);
  --brand-900: oklch(0.32 0.077 156.8);
  --brand-950: oklch(0.24 0.061 156.8);
}

Colors that work with #78cd9b

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#C3E9D3
Hairlines and dividers
Muted text#4B9B6C
Captions on the surface
Accent#993389
Second voice, not a rival
Dark variant#225D3B
Hover, pressed, headers
Light variant#ECF8F1
Selected rows, tints
Dark surface#14241B
Dark-mode background
Hover#5EC388
One step down in lightness
Pressed#45B974
Two steps down
Disabled#D3E3D9
Chroma pulled out
Focus ring#7FDBA5
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 #78cd9b

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 #225D3B
Safe as a 1px border on white
No — use #3EA669

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
  • Weight36/100
  • 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#CD78AA
Analogous left#7FCD78
Analogous right#78CDC5
Split-complement 1#C578CD
Split-complement 2#CD787F
Triadic 1#9B78CD
Triadic 2#CD9B78
Tetradic#787FCD
On the wheel
Base+30°−30°+120°+240°+180°145°

#78cd9b sits at 145°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red47.1%
Green80.4%
Blue60.8%
R · 0–255
120
0x78
G · 0–255
205
0xcd
B · 0–255
155
0x9b

CMYK percentages

Cyan41.5%
Magenta0.0%
Yellow24.4%
Key (black)19.6%

Total ink coverage is 86%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#78cd9b text on a black background

contrast 11.00:1

Card sample

#78cd9b text on a white background

contrast 1.91:1

Card sample

#78cd9b on grey

1.74:1

#78cd9b on its own surface

1.81:1

#78cd9b on its dark surface

8.48:1

CSS3 live lab

Text font color

The quick brown fox

color: #78cd9b;
Background color
Panel with #78cd9b background
background-color: #78cd9b;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #78cd9b;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(120, 205, 155, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(120, 205, 155, 0.45);
Border & gradient
Gradient panel
border: 3px solid #78cd9b;
background: linear-gradient(135deg, #78cd9b, #78C6CD);
Gradient text

Gradient headline

background: linear-gradient(90deg, #78cd9b, #78B1CD);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #78cd9b;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #78cd9b;
caret-color: #78cd9b;
Left rule
Pull quote or callout
border-left: 4px solid #78cd9b;
Ring + tint
Selected chip
background: #ECF8F1;
box-shadow: inset 0 0 0 2px #78cd9b;
Conic badge
68%
background: conic-gradient(#78cd9b 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #78cd9b 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(120, 205, 155, 0.5)
rgb(120 205 155 / 50%)
#78cd9b80
hsl(145 46% 64% / 50%)
color-mix(in srgb, #78cd9b 50%, transparent)
Alpha8-digit hexFlat on white
10%#78cd9b1a#F2FAF5
20%#78cd9b33#E4F5EB
40%#78cd9b66#C9EBD7
60%#78cd9b99#AEE1C3
80%#78cd9bcc#93D7AF

Gradients from #78cd9b

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, #A5DDBC, #78cd9b 45%, #225D3B);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #78cd9b, #62B5C5);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #78cd9b, #CD78AA);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #BBE6CD 0%, #78cd9b 45%, #225D3B 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%, #A8DB9D 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #8ED5D5 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #225D3B 0%, transparent 65%), #78cd9b;

Monochromatic scale

Palettes built from #78cd9b

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.

#78cd9b 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 11.00:1.

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.

#78cd9b, answered

What color is #78cd9b?

#78cd9b is a balanced vivid green, closest to Medium Aqua Marine (ΔE2000 5). It sits at 145° on the hue wheel with 46% saturation and 64% lightness, which reads as cool.

What is the RGB value of #78cd9b?

rgb(120, 205, 155) — 120 red, 205 green and 155 blue out of 255, or 47.1% / 80.4% / 60.8% by channel.

What is #78cd9b in HSL and HSV?

hsl(145, 46%, 64%) and hsv(145, 41%, 80%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #78cd9b a light or a dark color?

It is a light color. Relative luminance is 0.5002 and perceived brightness is 70%, so black text on it reaches 11.00:1.

Should I use black or white text on #78cd9b?

Black. It scores 11.00:1 against #78cd9b, versus 1.91:1 for white — AAA at any size.

Is #78cd9b accessible on a white background?

#78cd9b on white scores 1.91:1, which fails WCAG AA at every size. Darken it to #318554 to reach 4.5:1, or #25633F for 7:1.

What is the complementary color of #78cd9b?

#CD78AA sits directly opposite on the wheel. Softer options are the split-complements #C578CD and #CD787F, which give the same contrast with far less vibration.

What colors go well with #78cd9b?

For interface work: #F4FAF7 as the surface, #C3E9D3 for borders, #4B9B6C for secondary text, #993389 as an accent and #225D3B for hover and pressed states. For a palette, the analogous pair #7FCD78 and #78CDC5 stays calm, while #CD78AA is the loudest partner.

What is #78cd9b in CMYK for printing?

cmyk(42%, 0%, 24%, 20%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #78cd9b 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 #78CD7C; nudged cooler, #76CFBB.

Which Tailwind color is closest to #78cd9b?

The emerald family — its 500 step is #10b981, ΔE2000 8.8 away. That is a visible difference, so define #78cd9b as a custom token rather than reaching for the built-in.

How do I use #78cd9b in Tailwind CSS?

Inline it as an arbitrary value with bg-[#78cd9b] or text-[#78cd9b], 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 #78cd9b with 50% opacity?

rgba(120, 205, 155, 0.5), or #78cd9b80 in eight-digit hex. Over white that composites to #BCE6CD; over black, #3C674E.

Is #78cd9b a web-safe color?

No. The nearest web-safe colour is #66CC99, ΔE2000 2 away. The palette only matters for legacy displays and some email clients now.

What does the color #78cd9b 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 #78cd9b?

The safest is same-hue elevation: linear-gradient(135deg, #A5DDBC, #78cd9b 45%, #225D3B). For more colour, a short hue run to #62B5C5 keeps it rich without turning muddy.

Work with #78cd9b in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #78cd9b at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.