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cyan · cool

#2ba997

a dark, vivid cyan · cool · closest name: Light Sea Green

Token name suggestion: Slate Glacier

RGB
43, 169, 151
HSL
171°, 59%, 42%
CMYK
75, 0, 11, 34
Luminance
0.3112

#2ba997 is a dark vivid cyan, 171° on the wheel and 84/100 on the cool side. Put black text on it (7.22:1). As text it scores 2.91:1 on white — use #218073 instead. Nearest name is Light Sea Green, nearest Tailwind family is teal.

hsl(171 59% 42%)rgb(43 169 151)Base step 700AAA inkCool

At a glance

Every number on this page in one read: what #2ba997 is made of, how bright it looks, and which way it leans.

Hex
#2ba997
Hue
171°
cyan
Saturation
59%
vivid
Lightness
42%
dark
Brightness
66%
HSV value
Perceived
55%
weighted brightness
Luminance
0.3112
WCAG relative
Temperature
Cool
84/100 cool
Color family
Cyan
Tone
Vivid
Best ink
Black
7.22:1
Closest name
Light Sea Green
ΔE2000 4.7
Chroma
37.7
LCH, 0–130ish
OKLCH L
0.664
perceptual lightness
Tailwind
teal
500 · ΔE 4.3
Web-safe
#339999
nearest of 216
Where it sits
Hue171° of 360°
Saturation59%
Lightness42%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #2ba997.

Temperature
Warm ← → Cool84% 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%
Green91%
Blue7%

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

Every format

HEX#2ba997
HEX (8-digit)#2ba997ff
RGBrgb(43, 169, 151)
RGBArgba(43, 169, 151, 1)
HSLhsl(171, 59%, 42%)
HSV / HSBhsv(171, 75%, 66%)
HWBhwb(171 17% 34%)
CMYKcmyk(75%, 0%, 11%, 34%)
LABlab(62.6 -37.7 -0.4)
LCHlch(62.6 37.7 180.6)
OKLCHoklch(0.664 0.109 180.9)
XYZ (D65)xyz(20.77, 31.12, 34.18)
Decimal2861463
Display P3color(display-p3 0.169 0.663 0.592)
Web-safe#339999

Copy-ready code

every platformclick to select
/* CSS */
color: #2ba997;
background-color: #2ba997;
/* CSS custom property */
--brand: #2ba997;
/* Tailwind (arbitrary) */
class="text-[#2ba997] bg-[#2ba997]"
/* SCSS */
$brand: #2ba997;
/* SwiftUI */
Color(red: 0.169, green: 0.663, blue: 0.592)
/* UIKit */
UIColor(red: 0.169, green: 0.663, blue: 0.592, alpha: 1)
/* Android XML */
<color name="brand">#2BA997</color>
/* Android Compose */
Color(0xFF2BA997)
/* Flutter */
Color(0xFF2BA997)
/* Python / OpenCV (BGR) */
(151, 169, 43)
/* Python / PIL (RGB) */
(43, 169, 151)
/* Java AWT */
new Color(43, 169, 151)
/* .NET */
Color.FromArgb(255, 43, 169, 151)
/* OpenGL / Unity (0–1) */
(0.1686f, 0.6627f, 0.5922f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{43,169,151}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #2ba997 85%, white);
border-color: color-mix(in oklab, #2ba997 40%, transparent);
/* theme-aware in one line */
color: light-dark(#1A665B, #D3EEEA);
/* relative colour syntax */
--hover: hsl(from #2ba997 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: #F4FBFA;
  --brand-100: #E9F7F5;
  --brand-200: #CDEFEA;
  --brand-300: #A6E8DF;
  --brand-400: #79DDCF;
  --brand-500: #4CD1BE;
  --brand-600: #32C3AE;
  --brand-700: #2ba997;
  --brand-800: #218274;
  --brand-900: #1C5F55;
  --brand-950: #113B35;
  --brand: #2ba997;
  --brand-ink: #000000;
  --brand-surface: #F4FAFA;
  --brand-border: #C0EDE6;
  --brand-hover: #248D7E;
  --brand-pressed: #1D7064;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142422;
    --brand-ink: #D3EEEA;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4FBFA',
        100: '#E9F7F5',
        200: '#CDEFEA',
        300: '#A6E8DF',
        400: '#79DDCF',
        500: '#4CD1BE',
        600: '#32C3AE',
        700: '#2ba997',
        800: '#218274',
        900: '#1C5F55',
        950: '#113B35',
        DEFAULT: '#2ba997',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4FBFA,
  '100': #E9F7F5,
  '200': #CDEFEA,
  '300': #A6E8DF,
  '400': #79DDCF,
  '500': #4CD1BE,
  '600': #32C3AE,
  '700': #2ba997,
  '800': #218274,
  '900': #1C5F55,
  '950': #113B35,
);
$brand-base: #2ba997;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4FBFA", "$type": "color" },
      "100": { "$value": "#E9F7F5", "$type": "color" },
      "200": { "$value": "#CDEFEA", "$type": "color" },
      "300": { "$value": "#A6E8DF", "$type": "color" },
      "400": { "$value": "#79DDCF", "$type": "color" },
      "500": { "$value": "#4CD1BE", "$type": "color" },
      "600": { "$value": "#32C3AE", "$type": "color" },
      "700": { "$value": "#2ba997", "$type": "color" },
      "800": { "$value": "#218274", "$type": "color" },
      "900": { "$value": "#1C5F55", "$type": "color" },
      "950": { "$value": "#113B35", "$type": "color" }
    },
    "brandInk": { "$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 #2ba997 · 7.22:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.91:1
AA fail · AA large fail · AAA fail
Aa
Black text · 7.22:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #2ba997 as text scores 2.91:1 on white and 7.22:1 on black.
Best tinted ink on it, if plain black or white feels flat: #1A665B at 2.33:1.

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
#218073 · 4.77:1
AA on white−10% L
#218073
The quick fox
#186056 · 7.38:1
AAA on white−18% L
#186056
The quick fox
#2ba997 · 7.22:1
AA on blackalready passes
#2ba997
The quick fox
#2ba997 · 7.22:1
AAA on blackalready passes
#2ba997

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #2AA593 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
#2ba997 on white: 2.91:1
AA ✗ fail · AA-large · AAA
Aa
#2ba997 on black: 7.22:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #2ba997 as text on that neutral, and that neutral as text on #2ba997.

NeutralRatioBoth directions
White2.91:1AaAa
Slate 502.78:1AaAa
Slate 1002.65:1AaAa
Slate 2002.36:1AaAa
Slate 3001.96:1AaAa
Slate 4001.13:1AaAa
Slate 5001.64:1AaAa
Slate 6002.61:1AaAa
Slate 7003.56:1AaAa
Slate 8005.03:1AaAa
Slate 9006.14:1AaAa
Black7.22:1AaAa
Colour vision deficiency
true color
protanopia · #A19F96
deuteranopia · #909299
tritanopia · #00ACA3

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. #2ba997 is pinned to step 700; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F4FBFA
#E9F7F5
#CDEFEA
#A6E8DF
#79DDCF
#4CD1BE
#32C3AE
#2ba997
#218274
#1C5F55
#113B35
Base = 700Lightest = 50 · #F4FBFADarkest = 950 · #113B35Text 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 0.027 180.9);
  --brand-100: oklch(0.94 0.044 180.9);
  --brand-200: oklch(0.88 0.066 180.9);
  --brand-300: oklch(0.80 0.085 180.9);
  --brand-400: oklch(0.72 0.101 180.9);
  --brand-500: oklch(0.64 0.109 180.9);
  --brand-600: oklch(0.56 0.109 180.9);
  --brand-700: oklch(0.48 0.103 180.9);
  --brand-800: oklch(0.40 0.092 180.9);
  --brand-900: oklch(0.32 0.077 180.9);
  --brand-950: oklch(0.24 0.060 180.9);
}

Colors that work with #2ba997

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#F4FAFA
Tinted page background
Border#C0EDE6
Hairlines and dividers
Muted text#4B9B8F
Captions on the surface
Accent#AD275C
Second voice, not a rival
Dark variant#1A665B
Hover, pressed, headers
Light variant#EBFAF8
Selected rows, tints
Dark surface#142422
Dark-mode background
Hover#248D7E
One step down in lightness
Pressed#1D7064
Two steps down
Disabled#8EB7B1
Chroma pulled out
Focus ring#24C5AE
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 #2ba997

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
  • Headers, footers and dark-mode surfaces
  • Brand accents, badges and data highlights
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • Black text placed on it
  • Thin strokes and 1px borders — they disappear on light UI
  • 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 #1A665B
Safe as a 1px border on white
No — use #2AA593

Meaning and mood

What a colour in this family tends to signal, and how this particular chroma and lightness change the reading.

cleantechnicalfreshclinical

Cyan reads as water, air and infrastructure: cool, hygienic, engineered.

This is a confident chroma: strong enough to lead a brand, restrained enough to live in an interface all day. The low lightness adds weight and formality.

Worth knowing

At high lightness it disappears into white surfaces and thin strokes vanish entirely.

Reads as
  • FormalityHigh
  • EnergyMedium-high
  • Weight58/100
  • 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#A92B3D
Analogous left#2BA958
Analogous right#2B7CA9
Split-complement 1#A92B7C
Split-complement 2#A9582B
Triadic 1#972BA9
Triadic 2#A9972B
Tetradic#582BA9
On the wheel
Base+30°−30°+120°+240°+180°171°

#2ba997 sits at 171°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red16.9%
Green66.3%
Blue59.2%
R · 0–255
43
0x2b
G · 0–255
169
0xa9
B · 0–255
151
0x97

CMYK percentages

Cyan74.6%
Magenta0.0%
Yellow10.7%
Key (black)33.7%

Total ink coverage is 119%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#2ba997 text on a black background

contrast 7.22:1

Card sample

#2ba997 text on a white background

contrast 2.91:1

Card sample

#2ba997 on grey

2.65:1

#2ba997 on its own surface

2.75:1

#2ba997 on its dark surface

5.54:1

CSS3 live lab

Text font color

The quick brown fox

color: #2ba997;
Background color
Panel with #2ba997 background
background-color: #2ba997;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #2ba997;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(43, 169, 151, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(43, 169, 151, 0.45);
Border & gradient
Gradient panel
border: 3px solid #2ba997;
background: linear-gradient(135deg, #2ba997, #2B67A9);
Gradient text

Gradient headline

background: linear-gradient(90deg, #2ba997, #2B48A9);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #2ba997;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #2ba997;
caret-color: #2ba997;
Left rule
Pull quote or callout
border-left: 4px solid #2ba997;
Ring + tint
Selected chip
background: #EBFAF8;
box-shadow: inset 0 0 0 2px #2ba997;
Conic badge
68%
background: conic-gradient(#2ba997 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #2ba997 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(43, 169, 151, 0.5)
rgb(43 169 151 / 50%)
#2ba99780
hsl(171 59% 42% / 50%)
color-mix(in srgb, #2ba997 50%, transparent)
Alpha8-digit hexFlat on white
10%#2ba9971a#EAF6F5
20%#2ba99733#D5EEEA
40%#2ba99766#AADDD5
60%#2ba99799#80CBC1
80%#2ba997cc#55BAAC

Gradients from #2ba997

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, #42CFBB, #2ba997 45%, #1A665B);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #2ba997, #254F91);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #2ba997, #A92B3D);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #5BD5C4 0%, #2ba997 45%, #1A665B 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAFA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #3ACD62 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #3182C1 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #1A665B 0%, transparent 65%), #2ba997;

Monochromatic scale

Palettes built from #2ba997

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.

#2ba997 in the real world

Where a color in this family tends to land, and the interface roles it is usually asked to play.

Industries
TechnologyTravelHealthcareMedia
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 7.22:1.

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.

#2ba997, answered

What color is #2ba997?

#2ba997 is a dark vivid cyan, closest to Light Sea Green (ΔE2000 4.7). It sits at 171° on the hue wheel with 59% saturation and 42% lightness, which reads as cool.

What is the RGB value of #2ba997?

rgb(43, 169, 151) — 43 red, 169 green and 151 blue out of 255, or 16.9% / 66.3% / 59.2% by channel.

What is #2ba997 in HSL and HSV?

hsl(171, 59%, 42%) and hsv(171, 75%, 66%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #2ba997 a light or a dark color?

It is a mid-tone. Relative luminance is 0.3112 and perceived brightness is 55%, so black text on it reaches 7.22:1.

Should I use black or white text on #2ba997?

Black. It scores 7.22:1 against #2ba997, versus 2.91:1 for white — AAA at any size.

Is #2ba997 accessible on a white background?

#2ba997 on white scores 2.91:1, which fails WCAG AA at every size. Darken it to #218073 to reach 4.5:1, or #186056 for 7:1.

What is the complementary color of #2ba997?

#A92B3D sits directly opposite on the wheel. Softer options are the split-complements #A92B7C and #A9582B, which give the same contrast with far less vibration.

What colors go well with #2ba997?

For interface work: #F4FAFA as the surface, #C0EDE6 for borders, #4B9B8F for secondary text, #AD275C as an accent and #1A665B for hover and pressed states. For a palette, the analogous pair #2BA958 and #2B7CA9 stays calm, while #A92B3D is the loudest partner.

What is #2ba997 in CMYK for printing?

cmyk(75%, 0%, 11%, 34%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #2ba997 warm or cool?

Cool — it scores 84 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #2BA969; nudged cooler, #298EAB.

Which Tailwind color is closest to #2ba997?

The teal family — its 500 step is #14b8a6, ΔE2000 4.3 away. That is a visible difference, so define #2ba997 as a custom token rather than reaching for the built-in.

How do I use #2ba997 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#2ba997] or text-[#2ba997], 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 #2ba997 with 50% opacity?

rgba(43, 169, 151, 0.5), or #2ba99780 in eight-digit hex. Over white that composites to #95D4CB; over black, #16554C.

Is #2ba997 a web-safe color?

No. The nearest web-safe colour is #339999, ΔE2000 8.2 away. The palette only matters for legacy displays and some email clients now.

What does the color #2ba997 mean?

As a cyan, it reads clean, technical, fresh. Cyan reads as water, air and infrastructure: cool, hygienic, engineered. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #2ba997?

The safest is same-hue elevation: linear-gradient(135deg, #42CFBB, #2ba997 45%, #1A665B). For more colour, a short hue run to #254F91 keeps it rich without turning muddy.

Work with #2ba997 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #2ba997 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.