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cyan · cool

#6eb59f

a balanced, soft cyan · cool · closest name: Medium Aqua Marine

Token name suggestion: Atlas Glacier

RGB
110, 181, 159
HSL
161°, 32%, 57%
CMYK
39, 0, 12, 29
Luminance
0.3887

#6eb59f is a balanced soft cyan, 161° on the wheel and 78/100 on the cool side. Put black text on it (8.77:1). As text it scores 2.39:1 on white — use #42816D instead. Nearest name is Medium Aqua Marine, nearest Tailwind family is teal.

hsl(161 32% 57%)rgb(110 181 159)Base step 500AAA inkCool

At a glance

Every number on this page in one read: what #6eb59f is made of, how bright it looks, and which way it leans.

Hex
#6eb59f
Hue
161°
cyan
Saturation
32%
soft
Lightness
57%
balanced
Brightness
71%
HSV value
Perceived
63%
weighted brightness
Luminance
0.3887
WCAG relative
Temperature
Cool
78/100 cool
Color family
Cyan
Tone
Soft
Best ink
Black
8.77:1
Closest name
Medium Aqua Marine
ΔE2000 7.1
Chroma
27.8
LCH, 0–130ish
OKLCH L
0.720
perceptual lightness
Tailwind
teal
500 · ΔE 7.2
Web-safe
#66CC99
nearest of 216
Where it sits
Hue161° of 360°
Saturation32%
Lightness57%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #6eb59f.

Temperature
Warm ← → Cool78% 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
Red9%
Green85%
Blue6%

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

Every format

HEX#6eb59f
HEX (8-digit)#6eb59fff
RGBrgb(110, 181, 159)
RGBArgba(110, 181, 159, 1)
HSLhsl(161, 32%, 57%)
HSV / HSBhsv(161, 39%, 71%)
HWBhwb(161 43% 29%)
CMYKcmyk(39%, 0%, 12%, 29%)
LABlab(68.7 -27.5 4.2)
LCHlch(68.7 27.8 171.3)
OKLCHoklch(0.720 0.079 172.2)
XYZ (D65)xyz(29.21, 38.86, 38.76)
Decimal7255455
Display P3color(display-p3 0.431 0.710 0.624)
Web-safe#66CC99

Copy-ready code

every platformclick to select
/* CSS */
color: #6eb59f;
background-color: #6eb59f;
/* CSS custom property */
--brand: #6eb59f;
/* Tailwind (arbitrary) */
class="text-[#6eb59f] bg-[#6eb59f]"
/* SCSS */
$brand: #6eb59f;
/* SwiftUI */
Color(red: 0.431, green: 0.710, blue: 0.624)
/* UIKit */
UIColor(red: 0.431, green: 0.710, blue: 0.624, alpha: 1)
/* Android XML */
<color name="brand">#6EB59F</color>
/* Android Compose */
Color(0xFF6EB59F)
/* Flutter */
Color(0xFF6EB59F)
/* Python / OpenCV (BGR) */
(159, 181, 110)
/* Python / PIL (RGB) */
(110, 181, 159)
/* Java AWT */
new Color(110, 181, 159)
/* .NET */
Color.FromArgb(255, 110, 181, 159)
/* OpenGL / Unity (0–1) */
(0.4314f, 0.7098f, 0.6235f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{110,181,159}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #6eb59f 85%, white);
border-color: color-mix(in oklab, #6eb59f 40%, transparent);
/* theme-aware in one line */
color: light-dark(#2B5448, #D6EAE4);
/* relative colour syntax */
--hover: hsl(from #6eb59f 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: #F5F9F8;
  --brand-100: #ECF4F1;
  --brand-200: #D4E7E1;
  --brand-300: #B5D9CE;
  --brand-400: #90C6B5;
  --brand-500: #6eb59f;
  --brand-600: #53A289;
  --brand-700: #458773;
  --brand-800: #376C5C;
  --brand-900: #2B4F44;
  --brand-950: #1B322B;
  --brand: #6eb59f;
  --brand-ink: #000000;
  --brand-surface: #F5FAF8;
  --brand-border: #C9E3DB;
  --brand-hover: #57A98F;
  --brand-pressed: #4A927B;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #14241F;
    --brand-ink: #D6EAE4;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5F9F8',
        100: '#ECF4F1',
        200: '#D4E7E1',
        300: '#B5D9CE',
        400: '#90C6B5',
        500: '#6eb59f',
        600: '#53A289',
        700: '#458773',
        800: '#376C5C',
        900: '#2B4F44',
        950: '#1B322B',
        DEFAULT: '#6eb59f',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5F9F8,
  '100': #ECF4F1,
  '200': #D4E7E1,
  '300': #B5D9CE,
  '400': #90C6B5,
  '500': #6eb59f,
  '600': #53A289,
  '700': #458773,
  '800': #376C5C,
  '900': #2B4F44,
  '950': #1B322B,
);
$brand-base: #6eb59f;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F5F9F8", "$type": "color" },
      "100": { "$value": "#ECF4F1", "$type": "color" },
      "200": { "$value": "#D4E7E1", "$type": "color" },
      "300": { "$value": "#B5D9CE", "$type": "color" },
      "400": { "$value": "#90C6B5", "$type": "color" },
      "500": { "$value": "#6eb59f", "$type": "color" },
      "600": { "$value": "#53A289", "$type": "color" },
      "700": { "$value": "#458773", "$type": "color" },
      "800": { "$value": "#376C5C", "$type": "color" },
      "900": { "$value": "#2B4F44", "$type": "color" },
      "950": { "$value": "#1B322B", "$type": "color" }
    },
    "brandInk": { "$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 #6eb59f · 8.77:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.39:1
AA fail · AA large fail · AAA fail
Aa
Black text · 8.77:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #6eb59f as text scores 2.39:1 on white and 8.77:1 on black.
Best tinted ink on it, if plain black or white feels flat: #2B5448 at 3.56:1.

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
#42816D · 4.57:1
AA on white−19% L
#42816D
The quick fox
#305F50 · 7.30:1
AAA on white−29% L
#305F50
The quick fox
#6eb59f · 8.77:1
AA on blackalready passes
#6eb59f
The quick fox
#6eb59f · 8.77:1
AAA on blackalready passes
#6eb59f

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #53A28A 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
#6eb59f on white: 2.39:1
AA ✗ fail · AA-large · AAA
Aa
#6eb59f on black: 8.77:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #6eb59f as text on that neutral, and that neutral as text on #6eb59f.

NeutralRatioBoth directions
White2.39:1AaAa
Slate 502.29:1AaAa
Slate 1002.18:1AaAa
Slate 2001.94:1AaAa
Slate 3001.61:1AaAa
Slate 4001.07:1AaAa
Slate 5001.99:1AaAa
Slate 6003.17:1AaAa
Slate 7004.33:1AaAa
Slate 8006.11:1AaAa
Slate 9007.46:1AaAa
Black8.77:1AaAa
Colour vision deficiency
true color
protanopia · #B1AD9E
deuteranopia · #A5A4A0
tritanopia · #58B6AE

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. #6eb59f 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.

#F5F9F8
#ECF4F1
#D4E7E1
#B5D9CE
#90C6B5
#6eb59f
#53A289
#458773
#376C5C
#2B4F44
#1B322B
Base = 500Lightest = 50 · #F5F9F8Darkest = 950 · #1B322BText 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 0.020 172.2);
  --brand-100: oklch(0.94 0.032 172.2);
  --brand-200: oklch(0.88 0.048 172.2);
  --brand-300: oklch(0.80 0.062 172.2);
  --brand-400: oklch(0.72 0.073 172.2);
  --brand-500: oklch(0.64 0.079 172.2);
  --brand-600: oklch(0.56 0.079 172.2);
  --brand-700: oklch(0.48 0.074 172.2);
  --brand-800: oklch(0.40 0.067 172.2);
  --brand-900: oklch(0.32 0.055 172.2);
  --brand-950: oklch(0.24 0.044 172.2);
}

Colors that work with #6eb59f

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#F5FAF8
Tinted page background
Border#C9E3DB
Hairlines and dividers
Muted text#4E9881
Captions on the surface
Accent#B96A96
Second voice, not a rival
Dark variant#2B5448
Hover, pressed, headers
Light variant#EEF6F4
Selected rows, tints
Dark surface#14241F
Dark-mode background
Hover#57A98F
One step down in lightness
Pressed#4A927B
Two steps down
Disabled#BED5CE
Chroma pulled out
Focus ring#72C6AC
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 #6eb59f

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

Works well for
  • Text and icons on dark surfaces
  • Charts, tags and secondary surfaces
  • Brand accents, badges and data highlights
  • Chart series and data categories
Use with care
  • Text of any size on white — fails WCAG AA
  • 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 #2B5448
Safe as a 1px border on white
No — use #53A28A

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.

The muted chroma softens the association — it reads considered rather than loud, which suits long-form and data-heavy screens. The mid lightness keeps it versatile in both themes.

Worth knowing

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

Reads as
  • FormalityMedium
  • EnergyMedium
  • Weight43/100
  • 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#B56E84
Analogous left#6EB57C
Analogous right#6EA8B5
Split-complement 1#B56EA8
Split-complement 2#B57C6E
Triadic 1#9F6EB5
Triadic 2#B59F6E
Tetradic#7C6EB5
On the wheel
Base+30°−30°+120°+240°+180°161°

#6eb59f sits at 161°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red43.1%
Green71.0%
Blue62.4%
R · 0–255
110
0x6e
G · 0–255
181
0xb5
B · 0–255
159
0x9f

CMYK percentages

Cyan39.2%
Magenta0.0%
Yellow12.2%
Key (black)29.0%

Total ink coverage is 80%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#6eb59f text on a black background

contrast 8.77:1

Card sample

#6eb59f text on a white background

contrast 2.39:1

Card sample

#6eb59f on grey

2.18:1

#6eb59f on its own surface

2.27:1

#6eb59f on its dark surface

6.74:1

CSS3 live lab

Text font color

The quick brown fox

color: #6eb59f;
Background color
Panel with #6eb59f background
background-color: #6eb59f;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #6eb59f;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(110, 181, 159, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(110, 181, 159, 0.45);
Border & gradient
Gradient panel
border: 3px solid #6eb59f;
background: linear-gradient(135deg, #6eb59f, #6E9CB5);
Gradient text

Gradient headline

background: linear-gradient(90deg, #6eb59f, #6E8AB5);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #6eb59f;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #6eb59f;
caret-color: #6eb59f;
Left rule
Pull quote or callout
border-left: 4px solid #6eb59f;
Ring + tint
Selected chip
background: #EEF6F4;
box-shadow: inset 0 0 0 2px #6eb59f;
Conic badge
68%
background: conic-gradient(#6eb59f 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #6eb59f 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(110, 181, 159, 0.5)
rgb(110 181 159 / 50%)
#6eb59f80
hsl(161 32% 57% / 50%)
color-mix(in srgb, #6eb59f 50%, transparent)
Alpha8-digit hexFlat on white
10%#6eb59f1a#F1F8F5
20%#6eb59f33#E2F0EC
40%#6eb59f66#C5E1D9
60%#6eb59f99#A8D3C5
80%#6eb59fcc#8BC4B2

Gradients from #6eb59f

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, #97CABA, #6eb59f 45%, #2B5448);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #6eb59f, #5A87AB);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #6eb59f, #B56E84);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #ABD4C7 0%, #6eb59f 45%, #2B5448 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F5FAF8, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #90C696 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #82AFBF 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #2B5448 0%, transparent 65%), #6eb59f;

Monochromatic scale

Palettes built from #6eb59f

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.

#6eb59f 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 8.77:1.

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.

#6eb59f, answered

What color is #6eb59f?

#6eb59f is a balanced soft cyan, closest to Medium Aqua Marine (ΔE2000 7.1). It sits at 161° on the hue wheel with 32% saturation and 57% lightness, which reads as cool.

What is the RGB value of #6eb59f?

rgb(110, 181, 159) — 110 red, 181 green and 159 blue out of 255, or 43.1% / 71% / 62.4% by channel.

What is #6eb59f in HSL and HSV?

hsl(161, 32%, 57%) and hsv(161, 39%, 71%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #6eb59f a light or a dark color?

It is a mid-tone. Relative luminance is 0.3887 and perceived brightness is 63%, so black text on it reaches 8.77:1.

Should I use black or white text on #6eb59f?

Black. It scores 8.77:1 against #6eb59f, versus 2.39:1 for white — AAA at any size.

Is #6eb59f accessible on a white background?

#6eb59f on white scores 2.39:1, which fails WCAG AA at every size. Darken it to #42816D to reach 4.5:1, or #305F50 for 7:1.

What is the complementary color of #6eb59f?

#B56E84 sits directly opposite on the wheel. Softer options are the split-complements #B56EA8 and #B57C6E, which give the same contrast with far less vibration.

What colors go well with #6eb59f?

For interface work: #F5FAF8 as the surface, #C9E3DB for borders, #4E9881 for secondary text, #B96A96 as an accent and #2B5448 for hover and pressed states. For a palette, the analogous pair #6EB57C and #6EA8B5 stays calm, while #B56E84 is the loudest partner.

What is #6eb59f in CMYK for printing?

cmyk(39%, 0%, 12%, 29%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #6eb59f warm or cool?

Cool — it scores 78 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #6EB585; nudged cooler, #6CB3B7.

Which Tailwind color is closest to #6eb59f?

The teal family — its 500 step is #14b8a6, ΔE2000 7.2 away. That is a visible difference, so define #6eb59f as a custom token rather than reaching for the built-in.

How do I use #6eb59f in Tailwind CSS?

Inline it as an arbitrary value with bg-[#6eb59f] or text-[#6eb59f], 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 #6eb59f with 50% opacity?

rgba(110, 181, 159, 0.5), or #6eb59f80 in eight-digit hex. Over white that composites to #B7DACF; over black, #375B50.

Is #6eb59f a web-safe color?

No. The nearest web-safe colour is #66CC99, ΔE2000 9.4 away. The palette only matters for legacy displays and some email clients now.

What does the color #6eb59f mean?

As a cyan, it reads clean, technical, fresh. Cyan reads as water, air and infrastructure: cool, hygienic, engineered. At this moderate chroma the association is present but not shouted.

What gradient works with #6eb59f?

The safest is same-hue elevation: linear-gradient(135deg, #97CABA, #6eb59f 45%, #2B5448). For more colour, a short hue run to #5A87AB keeps it rich without turning muddy.

Work with #6eb59f in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #6eb59f at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.