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green · cool

#5ac080

a balanced, soft green · cool · closest name: Medium Sea Green

Token name suggestion: True Fern

RGB
90, 192, 128
HSL
142°, 45%, 55%
CMYK
53, 0, 33, 25
Luminance
0.4143

#5ac080 is a balanced soft green, 142° on the wheel and 72/100 on the cool side. Put black text on it (9.29:1). As text it scores 2.26:1 on white — use #328250 instead. Nearest name is Medium Sea Green, nearest Tailwind family is emerald.

hsl(142 45% 55%)rgb(90 192 128)Base step 500AAA inkCool

At a glance

Every number on this page in one read: what #5ac080 is made of, how bright it looks, and which way it leans.

Hex
#5ac080
Hue
142°
green
Saturation
45%
soft
Lightness
55%
balanced
Brightness
75%
HSV value
Perceived
63%
weighted brightness
Luminance
0.4143
WCAG relative
Temperature
Cool
72/100 cool
Color family
Green
Tone
Soft
Best ink
Black
9.29:1
Closest name
Medium Sea Green
ΔE2000 4.3
Chroma
50.0
LCH, 0–130ish
OKLCH L
0.730
perceptual lightness
Tailwind
emerald
500 · ΔE 5.3
Web-safe
#66CC99
nearest of 216
Where it sits
Hue142° of 360°
Saturation45%
Lightness55%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #5ac080.

Temperature
Warm ← → Cool72% 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
Red5%
Green91%
Blue4%

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

Every format

HEX#5ac080
HEX (8-digit)#5ac080ff
RGBrgb(90, 192, 128)
RGBArgba(90, 192, 128, 1)
HSLhsl(142, 45%, 55%)
HSV / HSBhsv(142, 53%, 75%)
HWBhwb(142 35% 25%)
CMYKcmyk(53%, 0%, 33%, 25%)
LABlab(70.5 -44.2 23.4)
LCHlch(70.5 50.0 152.1)
OKLCHoklch(0.730 0.134 153.8)
XYZ (D65)xyz(26.96, 41.43, 26.99)
Decimal5947520
Display P3color(display-p3 0.353 0.753 0.502)
Web-safe#66CC99

Copy-ready code

every platformclick to select
/* CSS */
color: #5ac080;
background-color: #5ac080;
/* CSS custom property */
--brand: #5ac080;
/* Tailwind (arbitrary) */
class="text-[#5ac080] bg-[#5ac080]"
/* SCSS */
$brand: #5ac080;
/* SwiftUI */
Color(red: 0.353, green: 0.753, blue: 0.502)
/* UIKit */
UIColor(red: 0.353, green: 0.753, blue: 0.502, alpha: 1)
/* Android XML */
<color name="brand">#5AC080</color>
/* Android Compose */
Color(0xFF5AC080)
/* Flutter */
Color(0xFF5AC080)
/* Python / OpenCV (BGR) */
(128, 192, 90)
/* Python / PIL (RGB) */
(90, 192, 128)
/* Java AWT */
new Color(90, 192, 128)
/* .NET */
Color.FromArgb(255, 90, 192, 128)
/* OpenGL / Unity (0–1) */
(0.3529f, 0.7529f, 0.5020f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{90,192,128}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #5ac080 85%, white);
border-color: color-mix(in oklab, #5ac080 40%, transparent);
/* theme-aware in one line */
color: light-dark(#235C39, #D3EEDD);
/* relative colour syntax */
--hover: hsl(from #5ac080 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: #EAF5EE;
  --brand-200: #D1EBDB;
  --brand-300: #AEE0C1;
  --brand-400: #85D0A1;
  --brand-500: #5ac080;
  --brand-600: #44B16D;
  --brand-700: #38945A;
  --brand-800: #2D7648;
  --brand-900: #245637;
  --brand-950: #173622;
  --brand: #5ac080;
  --brand-ink: #000000;
  --brand-surface: #F4FAF7;
  --brand-border: #C4E8D2;
  --brand-hover: #44B26D;
  --brand-pressed: #3A985D;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #14241A;
    --brand-ink: #D3EEDD;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5FAF7',
        100: '#EAF5EE',
        200: '#D1EBDB',
        300: '#AEE0C1',
        400: '#85D0A1',
        500: '#5ac080',
        600: '#44B16D',
        700: '#38945A',
        800: '#2D7648',
        900: '#245637',
        950: '#173622',
        DEFAULT: '#5ac080',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5FAF7,
  '100': #EAF5EE,
  '200': #D1EBDB,
  '300': #AEE0C1,
  '400': #85D0A1,
  '500': #5ac080,
  '600': #44B16D,
  '700': #38945A,
  '800': #2D7648,
  '900': #245637,
  '950': #173622,
);
$brand-base: #5ac080;
$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": "#EAF5EE", "$type": "color" },
      "200": { "$value": "#D1EBDB", "$type": "color" },
      "300": { "$value": "#AEE0C1", "$type": "color" },
      "400": { "$value": "#85D0A1", "$type": "color" },
      "500": { "$value": "#5ac080", "$type": "color" },
      "600": { "$value": "#44B16D", "$type": "color" },
      "700": { "$value": "#38945A", "$type": "color" },
      "800": { "$value": "#2D7648", "$type": "color" },
      "900": { "$value": "#245637", "$type": "color" },
      "950": { "$value": "#173622", "$type": "color" }
    },
    "brandInk": { "$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 #5ac080 · 9.29:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.26:1
AA fail · AA large fail · AAA fail
Aa
Black text · 9.29:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #5ac080 as text scores 2.26:1 on white and 9.29:1 on black.
Best tinted ink on it, if plain black or white feels flat: #235C39 at 3.49:1.

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
#328250 · 4.72:1
AA on white−20% L
#328250
The quick fox
#25613B · 7.36:1
AAA on white−29% L
#25613B
The quick fox
#5ac080 · 9.29:1
AA on blackalready passes
#5ac080
The quick fox
#5ac080 · 9.29:1
AAA on blackalready passes
#5ac080

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #40A766 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
#5ac080 on white: 2.26:1
AA ✗ fail · AA-large · AAA
Aa
#5ac080 on black: 9.29:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #5ac080 as text on that neutral, and that neutral as text on #5ac080.

NeutralRatioBoth directions
White2.26:1AaAa
Slate 502.16:1AaAa
Slate 1002.06:1AaAa
Slate 2001.83:1AaAa
Slate 3001.52:1AaAa
Slate 4001.13:1AaAa
Slate 5002.10:1AaAa
Slate 6003.35:1AaAa
Slate 7004.58:1AaAa
Slate 8006.47:1AaAa
Slate 9007.89:1AaAa
Black9.29:1AaAa
Colour vision deficiency
true color
protanopia · #C0B27C
deuteranopia · #B1A884
tritanopia · #3FBEAF

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. #5ac080 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.

#F5FAF7
#EAF5EE
#D1EBDB
#AEE0C1
#85D0A1
#5ac080
#44B16D
#38945A
#2D7648
#245637
#173622
Base = 500Lightest = 50 · #F5FAF7Darkest = 950 · #173622Text 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 0.034 153.8);
  --brand-100: oklch(0.94 0.054 153.8);
  --brand-200: oklch(0.88 0.080 153.8);
  --brand-300: oklch(0.80 0.105 153.8);
  --brand-400: oklch(0.72 0.123 153.8);
  --brand-500: oklch(0.64 0.134 153.8);
  --brand-600: oklch(0.56 0.134 153.8);
  --brand-700: oklch(0.48 0.126 153.8);
  --brand-800: oklch(0.40 0.113 153.8);
  --brand-900: oklch(0.32 0.094 153.8);
  --brand-950: oklch(0.24 0.074 153.8);
}

Colors that work with #5ac080

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#C4E8D2
Hairlines and dividers
Muted text#4B9B69
Captions on the surface
Accent#C556B7
Second voice, not a rival
Dark variant#235C39
Hover, pressed, headers
Light variant#EDF8F1
Selected rows, tints
Dark surface#14241A
Dark-mode background
Hover#44B26D
One step down in lightness
Pressed#3A985D
Two steps down
Disabled#B8D2C2
Chroma pulled out
Focus ring#5ED089
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 #5ac080

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
  • 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 #235C39
Safe as a 1px border on white
No — use #40A766

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 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
  • Weight45/100
  • 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#C05A9A
Analogous left#67C05A
Analogous right#5AC0B3
Split-complement 1#B35AC0
Split-complement 2#C05A67
Triadic 1#805AC0
Triadic 2#C0805A
Tetradic#5A67C0
On the wheel
Base+30°−30°+120°+240°+180°142°

#5ac080 sits at 142°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red35.3%
Green75.3%
Blue50.2%
R · 0–255
90
0x5a
G · 0–255
192
0xc0
B · 0–255
128
0x80

CMYK percentages

Cyan53.1%
Magenta0.0%
Yellow33.3%
Key (black)24.7%

Total ink coverage is 111%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#5ac080 text on a black background

contrast 9.29:1

Card sample

#5ac080 text on a white background

contrast 2.26:1

Card sample

#5ac080 on grey

2.06:1

#5ac080 on its own surface

2.14:1

#5ac080 on its dark surface

7.16:1

CSS3 live lab

Text font color

The quick brown fox

color: #5ac080;
Background color
Panel with #5ac080 background
background-color: #5ac080;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #5ac080;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(90, 192, 128, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(90, 192, 128, 0.45);
Border & gradient
Gradient panel
border: 3px solid #5ac080;
background: linear-gradient(135deg, #5ac080, #5ABCC0);
Gradient text

Gradient headline

background: linear-gradient(90deg, #5ac080, #5AA2C0);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #5ac080;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #5ac080;
caret-color: #5ac080;
Left rule
Pull quote or callout
border-left: 4px solid #5ac080;
Ring + tint
Selected chip
background: #EDF8F1;
box-shadow: inset 0 0 0 2px #5ac080;
Conic badge
68%
background: conic-gradient(#5ac080 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #5ac080 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(90, 192, 128, 0.5)
rgb(90 192 128 / 50%)
#5ac08080
hsl(142 45% 55% / 50%)
color-mix(in srgb, #5ac080 50%, transparent)
Alpha8-digit hexFlat on white
10%#5ac0801a#EFF9F2
20%#5ac08033#DEF2E6
40%#5ac08066#BDE6CC
60%#5ac08099#9CD9B3
80%#5ac080cc#7BCD99

Gradients from #5ac080

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, #86D1A2, #5ac080 45%, #235C39);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #5ac080, #46A8B6);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #5ac080, #C05A9A);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #9CD9B3 0%, #5ac080 45%, #235C39 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%, #90CE7F 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #70C8C5 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #235C39 0%, transparent 65%), #5ac080;

Monochromatic scale

Palettes built from #5ac080

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.

#5ac080 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 9.29:1.

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.

#5ac080, answered

What color is #5ac080?

#5ac080 is a balanced soft green, closest to Medium Sea Green (ΔE2000 4.3). It sits at 142° on the hue wheel with 45% saturation and 55% lightness, which reads as cool.

What is the RGB value of #5ac080?

rgb(90, 192, 128) — 90 red, 192 green and 128 blue out of 255, or 35.3% / 75.3% / 50.2% by channel.

What is #5ac080 in HSL and HSV?

hsl(142, 45%, 55%) and hsv(142, 53%, 75%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #5ac080 a light or a dark color?

It is a mid-tone. Relative luminance is 0.4143 and perceived brightness is 63%, so black text on it reaches 9.29:1.

Should I use black or white text on #5ac080?

Black. It scores 9.29:1 against #5ac080, versus 2.26:1 for white — AAA at any size.

Is #5ac080 accessible on a white background?

#5ac080 on white scores 2.26:1, which fails WCAG AA at every size. Darken it to #328250 to reach 4.5:1, or #25613B for 7:1.

What is the complementary color of #5ac080?

#C05A9A sits directly opposite on the wheel. Softer options are the split-complements #B35AC0 and #C05A67, which give the same contrast with far less vibration.

What colors go well with #5ac080?

For interface work: #F4FAF7 as the surface, #C4E8D2 for borders, #4B9B69 for secondary text, #C556B7 as an accent and #235C39 for hover and pressed states. For a palette, the analogous pair #67C05A and #5AC0B3 stays calm, while #C05A9A is the loudest partner.

What is #5ac080 in CMYK for printing?

cmyk(53%, 0%, 33%, 25%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #5ac080 warm or cool?

Cool — it scores 72 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #5AC05B; nudged cooler, #58C2A7.

Which Tailwind color is closest to #5ac080?

The emerald family — its 500 step is #10b981, ΔE2000 5.3 away. That is a visible difference, so define #5ac080 as a custom token rather than reaching for the built-in.

How do I use #5ac080 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#5ac080] or text-[#5ac080], 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 #5ac080 with 50% opacity?

rgba(90, 192, 128, 0.5), or #5ac08080 in eight-digit hex. Over white that composites to #ADE0C0; over black, #2D6040.

Is #5ac080 a web-safe color?

No. The nearest web-safe colour is #66CC99, ΔE2000 4.7 away. The palette only matters for legacy displays and some email clients now.

What does the color #5ac080 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 #5ac080?

The safest is same-hue elevation: linear-gradient(135deg, #86D1A2, #5ac080 45%, #235C39). For more colour, a short hue run to #46A8B6 keeps it rich without turning muddy.

Work with #5ac080 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #5ac080 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.