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green · cool

#6cddaa

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

Token name suggestion: Signal Moss

RGB
108, 221, 170
HSL
153°, 62%, 65%
CMYK
51, 0, 23, 13
Luminance
0.5780

#6cddaa is a balanced vivid green, 153° on the wheel and 76/100 on the cool side. Put black text on it (12.56:1). As text it scores 1.67:1 on white — use #1F8758 instead. Nearest name is Medium Aqua Marine, nearest Tailwind family is emerald.

hsl(153 62% 65%)rgb(108 221 170)Base step 400AAA inkCool

At a glance

Every number on this page in one read: what #6cddaa is made of, how bright it looks, and which way it leans.

Hex
#6cddaa
Hue
153°
green
Saturation
62%
vivid
Lightness
65%
balanced
Brightness
87%
HSV value
Perceived
74%
weighted brightness
Luminance
0.5780
WCAG relative
Temperature
Cool
76/100 cool
Color family
Green
Tone
Vivid
Best ink
Black
12.56:1
Closest name
Medium Aqua Marine
ΔE2000 5.2
Chroma
46.6
LCH, 0–130ish
OKLCH L
0.817
perceptual lightness
Tailwind
emerald
500 · ΔE 10.6
Web-safe
#66CC99
nearest of 216
Where it sits
Hue153° of 360°
Saturation62%
Lightness65%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #6cddaa.

Temperature
Warm ← → Cool76% 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
Red6%
Green89%
Blue5%

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

Every format

HEX#6cddaa
HEX (8-digit)#6cddaaff
RGBrgb(108, 221, 170)
RGBArgba(108, 221, 170, 1)
HSLhsl(153, 62%, 65%)
HSV / HSBhsv(153, 51%, 87%)
HWBhwb(153 42% 13%)
CMYKcmyk(51%, 0%, 23%, 13%)
LABlab(80.6 -44.0 15.3)
LCHlch(80.6 46.6 160.8)
OKLCHoklch(0.817 0.128 162.1)
XYZ (D65)xyz(39.29, 57.80, 47.11)
Decimal7134634
Display P3color(display-p3 0.424 0.867 0.667)
Web-safe#66CC99

Copy-ready code

every platformclick to select
/* CSS */
color: #6cddaa;
background-color: #6cddaa;
/* CSS custom property */
--brand: #6cddaa;
/* Tailwind (arbitrary) */
class="text-[#6cddaa] bg-[#6cddaa]"
/* SCSS */
$brand: #6cddaa;
/* SwiftUI */
Color(red: 0.424, green: 0.867, blue: 0.667)
/* UIKit */
UIColor(red: 0.424, green: 0.867, blue: 0.667, alpha: 1)
/* Android XML */
<color name="brand">#6CDDAA</color>
/* Android Compose */
Color(0xFF6CDDAA)
/* Flutter */
Color(0xFF6CDDAA)
/* Python / OpenCV (BGR) */
(170, 221, 108)
/* Python / PIL (RGB) */
(108, 221, 170)
/* Java AWT */
new Color(108, 221, 170)
/* .NET */
Color.FromArgb(255, 108, 221, 170)
/* OpenGL / Unity (0–1) */
(0.4235f, 0.8667f, 0.6667f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{108,221,170}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #6cddaa 85%, white);
border-color: color-mix(in oklab, #6cddaa 40%, transparent);
/* theme-aware in one line */
color: light-dark(#186844, #D3EEE2);
/* relative colour syntax */
--hover: hsl(from #6cddaa 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: #F4FBF8;
  --brand-100: #E8F7F0;
  --brand-200: #CCF0E0;
  --brand-300: #A4EACA;
  --brand-400: #6cddaa;
  --brand-500: #49D596;
  --brand-600: #2EC782;
  --brand-700: #26A66C;
  --brand-800: #1F8557;
  --brand-900: #1A6041;
  --brand-950: #103C28;
  --brand: #6cddaa;
  --brand-ink: #000000;
  --brand-surface: #F4FAF8;
  --brand-border: #C0EDD8;
  --brand-hover: #4FD699;
  --brand-pressed: #32D088;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #14241D;
    --brand-ink: #D3EEE2;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4FBF8',
        100: '#E8F7F0',
        200: '#CCF0E0',
        300: '#A4EACA',
        400: '#6cddaa',
        500: '#49D596',
        600: '#2EC782',
        700: '#26A66C',
        800: '#1F8557',
        900: '#1A6041',
        950: '#103C28',
        DEFAULT: '#6cddaa',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4FBF8,
  '100': #E8F7F0,
  '200': #CCF0E0,
  '300': #A4EACA,
  '400': #6cddaa,
  '500': #49D596,
  '600': #2EC782,
  '700': #26A66C,
  '800': #1F8557,
  '900': #1A6041,
  '950': #103C28,
);
$brand-base: #6cddaa;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4FBF8", "$type": "color" },
      "100": { "$value": "#E8F7F0", "$type": "color" },
      "200": { "$value": "#CCF0E0", "$type": "color" },
      "300": { "$value": "#A4EACA", "$type": "color" },
      "400": { "$value": "#6cddaa", "$type": "color" },
      "500": { "$value": "#49D596", "$type": "color" },
      "600": { "$value": "#2EC782", "$type": "color" },
      "700": { "$value": "#26A66C", "$type": "color" },
      "800": { "$value": "#1F8557", "$type": "color" },
      "900": { "$value": "#1A6041", "$type": "color" },
      "950": { "$value": "#103C28", "$type": "color" }
    },
    "brandInk": { "$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 #6cddaa · 12.56:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.67:1
AA fail · AA large fail · AAA fail
Aa
Black text · 12.56:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #6cddaa as text scores 1.67:1 on white and 12.56:1 on black.
Best tinted ink on it, if plain black or white feels flat: #186844 at 4.05:1.

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
#1F8758 · 4.50:1
AA on white−32% L
#1F8758
The quick fox
#176542 · 7.06:1
AAA on white−40% L
#176542
The quick fox
#6cddaa · 12.56:1
AA on blackalready passes
#6cddaa
The quick fox
#6cddaa · 12.56:1
AAA on blackalready passes
#6cddaa

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #27A86E 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
#6cddaa on white: 1.67:1
AA ✗ fail · AA-large · AAA
Aa
#6cddaa on black: 12.56:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #6cddaa as text on that neutral, and that neutral as text on #6cddaa.

NeutralRatioBoth directions
White1.67:1AaAa
Slate 501.60:1AaAa
Slate 1001.53:1AaAa
Slate 2001.36:1AaAa
Slate 3001.13:1AaAa
Slate 4001.53:1AaAa
Slate 5002.85:1AaAa
Slate 6004.53:1AaAa
Slate 7006.19:1AaAa
Slate 8008.75:1AaAa
Slate 90010.68:1AaAa
Black12.56:1AaAa
Colour vision deficiency
true color
protanopia · #DACFA7
deuteranopia · #C9C3AD
tritanopia · #46DDCF

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. #6cddaa 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.

#F4FBF8
#E8F7F0
#CCF0E0
#A4EACA
#6cddaa
#49D596
#2EC782
#26A66C
#1F8557
#1A6041
#103C28
Base = 400Lightest = 50 · #F4FBF8Darkest = 950 · #103C28Text 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 0.032 162.1);
  --brand-100: oklch(0.94 0.051 162.1);
  --brand-200: oklch(0.88 0.077 162.1);
  --brand-300: oklch(0.80 0.100 162.1);
  --brand-400: oklch(0.72 0.118 162.1);
  --brand-500: oklch(0.64 0.128 162.1);
  --brand-600: oklch(0.56 0.128 162.1);
  --brand-700: oklch(0.48 0.120 162.1);
  --brand-800: oklch(0.40 0.107 162.1);
  --brand-900: oklch(0.32 0.089 162.1);
  --brand-950: oklch(0.24 0.070 162.1);
}

Colors that work with #6cddaa

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#C0EDD8
Hairlines and dividers
Muted text#4B9B77
Captions on the surface
Accent#AA2282
Second voice, not a rival
Dark variant#186844
Hover, pressed, headers
Light variant#EAFAF3
Selected rows, tints
Dark surface#14241D
Dark-mode background
Hover#4FD699
One step down in lightness
Pressed#32D088
Two steps down
Disabled#D5E4DD
Chroma pulled out
Focus ring#75E9B4
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 #6cddaa

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 #186844
Safe as a 1px border on white
No — use #27A86E

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#DD6C9F
Analogous left#6CDD71
Analogous right#6CD8DD
Split-complement 1#DD6CD8
Split-complement 2#DD716C
Triadic 1#AA6CDD
Triadic 2#DDAA6C
Tetradic#716CDD
On the wheel
Base+30°−30°+120°+240°+180°153°

#6cddaa sits at 153°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red42.4%
Green86.7%
Blue66.7%
R · 0–255
108
0x6c
G · 0–255
221
0xdd
B · 0–255
170
0xaa

CMYK percentages

Cyan51.1%
Magenta0.0%
Yellow23.1%
Key (black)13.3%

Total ink coverage is 88%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#6cddaa text on a black background

contrast 12.56:1

Card sample

#6cddaa text on a white background

contrast 1.67:1

Card sample

#6cddaa on grey

1.53:1

#6cddaa on its own surface

1.58:1

#6cddaa on its dark surface

9.66:1

CSS3 live lab

Text font color

The quick brown fox

color: #6cddaa;
Background color
Panel with #6cddaa background
background-color: #6cddaa;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #6cddaa;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(108, 221, 170, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(108, 221, 170, 0.45);
Border & gradient
Gradient panel
border: 3px solid #6cddaa;
background: linear-gradient(135deg, #6cddaa, #6CC5DD);
Gradient text

Gradient headline

background: linear-gradient(90deg, #6cddaa, #6CA8DD);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #6cddaa;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #6cddaa;
caret-color: #6cddaa;
Left rule
Pull quote or callout
border-left: 4px solid #6cddaa;
Ring + tint
Selected chip
background: #EAFAF3;
box-shadow: inset 0 0 0 2px #6cddaa;
Conic badge
68%
background: conic-gradient(#6cddaa 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #6cddaa 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(108, 221, 170, 0.5)
rgb(108 221 170 / 50%)
#6cddaa80
hsl(153 62% 65% / 50%)
color-mix(in srgb, #6cddaa 50%, transparent)
Alpha8-digit hexFlat on white
10%#6cddaa1a#F0FCF7
20%#6cddaa33#E2F8EE
40%#6cddaa66#C4F1DD
60%#6cddaa99#A7EBCC
80%#6cddaacc#89E4BB

Gradients from #6cddaa

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, #9EE8C7, #6cddaa 45%, #186844);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #6cddaa, #53B0D7);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #6cddaa, #DD6C9F);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #B7EED5 0%, #6cddaa 45%, #186844 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%, #98E795 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #85D6E3 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #186844 0%, transparent 65%), #6cddaa;

Monochromatic scale

Palettes built from #6cddaa

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.

#6cddaa 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 12.56:1.

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.

#6cddaa, answered

What color is #6cddaa?

#6cddaa is a balanced vivid green, closest to Medium Aqua Marine (ΔE2000 5.2). It sits at 153° on the hue wheel with 62% saturation and 65% lightness, which reads as cool.

What is the RGB value of #6cddaa?

rgb(108, 221, 170) — 108 red, 221 green and 170 blue out of 255, or 42.4% / 86.7% / 66.7% by channel.

What is #6cddaa in HSL and HSV?

hsl(153, 62%, 65%) and hsv(153, 51%, 87%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #6cddaa a light or a dark color?

It is a light color. Relative luminance is 0.5780 and perceived brightness is 74%, so black text on it reaches 12.56:1.

Should I use black or white text on #6cddaa?

Black. It scores 12.56:1 against #6cddaa, versus 1.67:1 for white — AAA at any size.

Is #6cddaa accessible on a white background?

#6cddaa on white scores 1.67:1, which fails WCAG AA at every size. Darken it to #1F8758 to reach 4.5:1, or #176542 for 7:1.

What is the complementary color of #6cddaa?

#DD6C9F sits directly opposite on the wheel. Softer options are the split-complements #DD6CD8 and #DD716C, which give the same contrast with far less vibration.

What colors go well with #6cddaa?

For interface work: #F4FAF8 as the surface, #C0EDD8 for borders, #4B9B77 for secondary text, #AA2282 as an accent and #186844 for hover and pressed states. For a palette, the analogous pair #6CDD71 and #6CD8DD stays calm, while #DD6C9F is the loudest partner.

What is #6cddaa in CMYK for printing?

cmyk(51%, 0%, 23%, 13%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #6cddaa warm or cool?

Cool — it scores 76 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #6CDD81; nudged cooler, #6ADFD5.

Which Tailwind color is closest to #6cddaa?

The emerald family — its 500 step is #10b981, ΔE2000 10.6 away. That is a visible difference, so define #6cddaa as a custom token rather than reaching for the built-in.

How do I use #6cddaa in Tailwind CSS?

Inline it as an arbitrary value with bg-[#6cddaa] or text-[#6cddaa], 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 #6cddaa with 50% opacity?

rgba(108, 221, 170, 0.5), or #6cddaa80 in eight-digit hex. Over white that composites to #B6EED5; over black, #366F55.

Is #6cddaa a web-safe color?

No. The nearest web-safe colour is #66CC99, ΔE2000 4.2 away. The palette only matters for legacy displays and some email clients now.

What does the color #6cddaa 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 #6cddaa?

The safest is same-hue elevation: linear-gradient(135deg, #9EE8C7, #6cddaa 45%, #186844). For more colour, a short hue run to #53B0D7 keeps it rich without turning muddy.

Work with #6cddaa in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #6cddaa at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.