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green · cool

#a6dbb5

a light, soft green · cool · closest name: Dark Sea Green

Token name suggestion: Linen Basil

RGB
166, 219, 181
HSL
137°, 42%, 76%
CMYK
24, 0, 17, 14
Luminance
0.6211

#a6dbb5 is a light soft green, 137° on the wheel and 70/100 on the cool side. Put black text on it (13.42:1). As text it scores 1.56:1 on white — use #36854C instead. Nearest name is Dark Sea Green, nearest Tailwind family is emerald.

hsl(137 42% 76%)rgb(166 219 181)Base step 300AAA inkCool

At a glance

Every number on this page in one read: what #a6dbb5 is made of, how bright it looks, and which way it leans.

Hex
#a6dbb5
Hue
137°
green
Saturation
42%
soft
Lightness
76%
light
Brightness
86%
HSV value
Perceived
79%
weighted brightness
Luminance
0.6211
WCAG relative
Temperature
Cool
70/100 cool
Color family
Green
Tone
Soft
Best ink
Black
13.42:1
Closest name
Dark Sea Green
ΔE2000 8.3
Chroma
27.9
LCH, 0–130ish
OKLCH L
0.844
perceptual lightness
Tailwind
emerald
500 · ΔE 15.6
Web-safe
#99CCCC
nearest of 216
Where it sits
Hue137° of 360°
Saturation42%
Lightness76%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #a6dbb5.

Temperature
Warm ← → Cool70% 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
Red13%
Green82%
Blue5%

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

Every format

HEX#a6dbb5
HEX (8-digit)#a6dbb5ff
RGBrgb(166, 219, 181)
RGBArgba(166, 219, 181, 1)
HSLhsl(137, 42%, 76%)
HSV / HSBhsv(137, 24%, 86%)
HWBhwb(137 65% 14%)
CMYKcmyk(24%, 0%, 17%, 14%)
LABlab(83.0 -24.6 13.2)
LCHlch(83.0 27.9 151.7)
OKLCHoklch(0.844 0.076 153.4)
XYZ (D65)xyz(49.40, 62.10, 53.09)
Decimal10935221
Display P3color(display-p3 0.651 0.859 0.710)
Web-safe#99CCCC

Copy-ready code

every platformclick to select
/* CSS */
color: #a6dbb5;
background-color: #a6dbb5;
/* CSS custom property */
--brand: #a6dbb5;
/* Tailwind (arbitrary) */
class="text-[#a6dbb5] bg-[#a6dbb5]"
/* SCSS */
$brand: #a6dbb5;
/* SwiftUI */
Color(red: 0.651, green: 0.859, blue: 0.710)
/* UIKit */
UIColor(red: 0.651, green: 0.859, blue: 0.710, alpha: 1)
/* Android XML */
<color name="brand">#A6DBB5</color>
/* Android Compose */
Color(0xFFA6DBB5)
/* Flutter */
Color(0xFFA6DBB5)
/* Python / OpenCV (BGR) */
(181, 219, 166)
/* Python / PIL (RGB) */
(166, 219, 181)
/* Java AWT */
new Color(166, 219, 181)
/* .NET */
Color.FromArgb(255, 166, 219, 181)
/* OpenGL / Unity (0–1) */
(0.6510f, 0.8588f, 0.7098f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{166,219,181}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #a6dbb5 85%, white);
border-color: color-mix(in oklab, #a6dbb5 40%, transparent);
/* theme-aware in one line */
color: light-dark(#255B34, #D3EDDB);
/* relative colour syntax */
--hover: hsl(from #a6dbb5 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: #F5FAF6;
  --brand-100: #EBF5EE;
  --brand-200: #D1EAD8;
  --brand-300: #a6dbb5;
  --brand-400: #87CF9B;
  --brand-500: #5FBE7A;
  --brand-600: #47AE64;
  --brand-700: #3B9153;
  --brand-800: #2F7443;
  --brand-900: #255533;
  --brand-950: #173520;
  --brand: #a6dbb5;
  --brand-ink: #000000;
  --brand-surface: #F4FAF6;
  --brand-border: #C5E7CF;
  --brand-hover: #8DD1A0;
  --brand-pressed: #73C68B;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142418;
    --brand-ink: #D3EDDB;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5FAF6',
        100: '#EBF5EE',
        200: '#D1EAD8',
        300: '#a6dbb5',
        400: '#87CF9B',
        500: '#5FBE7A',
        600: '#47AE64',
        700: '#3B9153',
        800: '#2F7443',
        900: '#255533',
        950: '#173520',
        DEFAULT: '#a6dbb5',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5FAF6,
  '100': #EBF5EE,
  '200': #D1EAD8,
  '300': #a6dbb5,
  '400': #87CF9B,
  '500': #5FBE7A,
  '600': #47AE64,
  '700': #3B9153,
  '800': #2F7443,
  '900': #255533,
  '950': #173520,
);
$brand-base: #a6dbb5;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F5FAF6", "$type": "color" },
      "100": { "$value": "#EBF5EE", "$type": "color" },
      "200": { "$value": "#D1EAD8", "$type": "color" },
      "300": { "$value": "#a6dbb5", "$type": "color" },
      "400": { "$value": "#87CF9B", "$type": "color" },
      "500": { "$value": "#5FBE7A", "$type": "color" },
      "600": { "$value": "#47AE64", "$type": "color" },
      "700": { "$value": "#3B9153", "$type": "color" },
      "800": { "$value": "#2F7443", "$type": "color" },
      "900": { "$value": "#255533", "$type": "color" },
      "950": { "$value": "#173520", "$type": "color" }
    },
    "brandInk": { "$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 #a6dbb5 · 13.42:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.56:1
AA fail · AA large fail · AAA fail
Aa
Black text · 13.42:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #a6dbb5 as text scores 1.56:1 on white and 13.42:1 on black.
Best tinted ink on it, if plain black or white feels flat: #255B34 at 5.11:1.

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
#36854C · 4.55:1
AA on white−39% L
#36854C
The quick fox
#286439 · 7.07:1
AAA on white−48% L
#286439
The quick fox
#a6dbb5 · 13.42:1
AA on blackalready passes
#a6dbb5
The quick fox
#a6dbb5 · 13.42:1
AAA on blackalready passes
#a6dbb5

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #43A55F 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
#a6dbb5 on white: 1.56:1
AA ✗ fail · AA-large · AAA
Aa
#a6dbb5 on black: 13.42:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #a6dbb5 as text on that neutral, and that neutral as text on #a6dbb5.

NeutralRatioBoth directions
White1.56:1AaAa
Slate 501.50:1AaAa
Slate 1001.43:1AaAa
Slate 2001.27:1AaAa
Slate 3001.05:1AaAa
Slate 4001.64:1AaAa
Slate 5003.04:1AaAa
Slate 6004.84:1AaAa
Slate 7006.62:1AaAa
Slate 8009.35:1AaAa
Slate 90011.41:1AaAa
Black13.42:1AaAa
Colour vision deficiency
true color
protanopia · #DBD2B3
deuteranopia · #D2CCB7
tritanopia · #9EDAD0

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. #a6dbb5 is pinned to step 300; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F5FAF6
#EBF5EE
#D1EAD8
#a6dbb5
#87CF9B
#5FBE7A
#47AE64
#3B9153
#2F7443
#255533
#173520
Base = 300Lightest = 50 · #F5FAF6Darkest = 950 · #173520Text 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 0.019 153.4);
  --brand-100: oklch(0.94 0.030 153.4);
  --brand-200: oklch(0.88 0.046 153.4);
  --brand-300: oklch(0.80 0.059 153.4);
  --brand-400: oklch(0.72 0.070 153.4);
  --brand-500: oklch(0.64 0.076 153.4);
  --brand-600: oklch(0.56 0.076 153.4);
  --brand-700: oklch(0.48 0.072 153.4);
  --brand-800: oklch(0.40 0.064 153.4);
  --brand-900: oklch(0.32 0.053 153.4);
  --brand-950: oklch(0.24 0.042 153.4);
}

Colors that work with #a6dbb5

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#F4FAF6
Tinted page background
Border#C5E7CF
Hairlines and dividers
Muted text#4B9B61
Captions on the surface
Accent#963692
Second voice, not a rival
Dark variant#255B34
Hover, pressed, headers
Light variant#EDF8F0
Selected rows, tints
Dark surface#142418
Dark-mode background
Hover#8DD1A0
One step down in lightness
Pressed#73C68B
Two steps down
Disabled#F3F7F4
Chroma pulled out
Focus ring#AFE6BF
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 #a6dbb5

Derived from its contrast, chroma and lightness — not from taste.

Works well for
  • Text and icons on dark surfaces
  • Charts, tags and secondary surfaces
  • Card and section backgrounds
  • Brand accents, badges and data highlights
Use with care
  • Text of any size on white — fails WCAG AA
  • 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 #255B34
Safe as a 1px border on white
No — use #43A55F

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.

The muted chroma softens the association — it reads considered rather than loud, which suits long-form and data-heavy screens. 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
  • FormalityMedium
  • EnergyMedium
  • Weight25/100
  • 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#DBA6CC
Analogous left#B2DBA6
Analogous right#A6DBD0
Split-complement 1#D0A6DB
Split-complement 2#DBA6B2
Triadic 1#B5A6DB
Triadic 2#DBB5A6
Tetradic#A6B2DB
On the wheel
Base+30°−30°+120°+240°+180°137°

#a6dbb5 sits at 137°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red65.1%
Green85.9%
Blue71.0%
R · 0–255
166
0xa6
G · 0–255
219
0xdb
B · 0–255
181
0xb5

CMYK percentages

Cyan24.2%
Magenta0.0%
Yellow17.4%
Key (black)14.1%

Total ink coverage is 56%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#a6dbb5 text on a black background

contrast 13.42:1

Card sample

#a6dbb5 text on a white background

contrast 1.56:1

Card sample

#a6dbb5 on grey

1.43:1

#a6dbb5 on its own surface

1.48:1

#a6dbb5 on its dark surface

10.36:1

CSS3 live lab

Text font color

The quick brown fox

color: #a6dbb5;
Background color
Panel with #a6dbb5 background
background-color: #a6dbb5;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #a6dbb5;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(166, 219, 181, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(166, 219, 181, 0.45);
Border & gradient
Gradient panel
border: 3px solid #a6dbb5;
background: linear-gradient(135deg, #a6dbb5, #A6DBD8);
Gradient text

Gradient headline

background: linear-gradient(90deg, #a6dbb5, #A6D0DB);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #a6dbb5;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #a6dbb5;
caret-color: #a6dbb5;
Left rule
Pull quote or callout
border-left: 4px solid #a6dbb5;
Ring + tint
Selected chip
background: #EDF8F0;
box-shadow: inset 0 0 0 2px #a6dbb5;
Conic badge
68%
background: conic-gradient(#a6dbb5 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #a6dbb5 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(166, 219, 181, 0.5)
rgb(166 219 181 / 50%)
#a6dbb580
hsl(137 42% 76% / 50%)
color-mix(in srgb, #a6dbb5 50%, transparent)
Alpha8-digit hexFlat on white
10%#a6dbb51a#F6FBF8
20%#a6dbb533#EDF8F0
40%#a6dbb566#DBF1E1
60%#a6dbb599#CAE9D3
80%#a6dbb5cc#B8E2C4

Gradients from #a6dbb5

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, #D2EDD9, #a6dbb5 45%, #255B34);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #a6dbb5, #90D0D2);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #a6dbb5, #DBA6CC);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #E7F5EB 0%, #a6dbb5 45%, #255B34 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF6, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #D4EACA 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #BCE4DE 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #255B34 0%, transparent 65%), #a6dbb5;

Monochromatic scale

Palettes built from #a6dbb5

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.

#a6dbb5 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

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 13.42:1.

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.

#a6dbb5, answered

What color is #a6dbb5?

#a6dbb5 is a light soft green, closest to Dark Sea Green (ΔE2000 8.3). It sits at 137° on the hue wheel with 42% saturation and 76% lightness, which reads as cool.

What is the RGB value of #a6dbb5?

rgb(166, 219, 181) — 166 red, 219 green and 181 blue out of 255, or 65.1% / 85.9% / 71% by channel.

What is #a6dbb5 in HSL and HSV?

hsl(137, 42%, 76%) and hsv(137, 24%, 86%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #a6dbb5 a light or a dark color?

It is a light color. Relative luminance is 0.6211 and perceived brightness is 79%, so black text on it reaches 13.42:1.

Should I use black or white text on #a6dbb5?

Black. It scores 13.42:1 against #a6dbb5, versus 1.56:1 for white — AAA at any size.

Is #a6dbb5 accessible on a white background?

#a6dbb5 on white scores 1.56:1, which fails WCAG AA at every size. Darken it to #36854C to reach 4.5:1, or #286439 for 7:1.

What is the complementary color of #a6dbb5?

#DBA6CC sits directly opposite on the wheel. Softer options are the split-complements #D0A6DB and #DBA6B2, which give the same contrast with far less vibration.

What colors go well with #a6dbb5?

For interface work: #F4FAF6 as the surface, #C5E7CF for borders, #4B9B61 for secondary text, #963692 as an accent and #255B34 for hover and pressed states. For a palette, the analogous pair #B2DBA6 and #A6DBD0 stays calm, while #DBA6CC is the loudest partner.

What is #a6dbb5 in CMYK for printing?

cmyk(24%, 0%, 17%, 14%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #a6dbb5 warm or cool?

Cool — it scores 70 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #AADBA6; nudged cooler, #A5DCC9.

Which Tailwind color is closest to #a6dbb5?

The emerald family — its 500 step is #10b981, ΔE2000 15.6 away. That is a visible difference, so define #a6dbb5 as a custom token rather than reaching for the built-in.

How do I use #a6dbb5 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#a6dbb5] or text-[#a6dbb5], 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 #a6dbb5 with 50% opacity?

rgba(166, 219, 181, 0.5), or #a6dbb580 in eight-digit hex. Over white that composites to #D3EDDA; over black, #536E5B.

Is #a6dbb5 a web-safe color?

No. The nearest web-safe colour is #99CCCC, ΔE2000 13.8 away. The palette only matters for legacy displays and some email clients now.

What does the color #a6dbb5 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 moderate chroma the association is present but not shouted.

What gradient works with #a6dbb5?

The safest is same-hue elevation: linear-gradient(135deg, #D2EDD9, #a6dbb5 45%, #255B34). For more colour, a short hue run to #90D0D2 keeps it rich without turning muddy.

Work with #a6dbb5 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #a6dbb5 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.