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green · cool

#5afb8d

a light, electric green · cool · closest name: Spring Green

Token name suggestion: Linen Basil

RGB
90, 251, 141
HSL
139°, 95%, 67%
CMYK
64, 0, 44, 2
Luminance
0.7309

#5afb8d is a light electric green, 139° on the wheel and 70/100 on the cool side. Put black text on it (15.62:1). As text it scores 1.34:1 on white — use #03862D instead. Nearest name is Spring Green, nearest Tailwind family is green.

hsl(139 95% 67%)rgb(90 251 141)Base step 400AAA inkCool

At a glance

Every number on this page in one read: what #5afb8d is made of, how bright it looks, and which way it leans.

Hex
#5afb8d
Hue
139°
green
Saturation
95%
electric
Lightness
67%
light
Brightness
98%
HSV value
Perceived
80%
weighted brightness
Luminance
0.7309
WCAG relative
Temperature
Cool
70/100 cool
Color family
Green
Tone
Electric
Best ink
Black
15.62:1
Closest name
Spring Green
ΔE2000 2.9
Chroma
76.6
LCH, 0–130ish
OKLCH L
0.879
perceptual lightness
Tailwind
green
500 · ΔE 12.8
Web-safe
#66FF99
nearest of 216
Where it sits
Hue139° of 360°
Saturation95%
Lightness67%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #5afb8d.

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
Red3%
Green94%
Blue3%

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

Every format

HEX#5afb8d
HEX (8-digit)#5afb8dff
RGBrgb(90, 251, 141)
RGBArgba(90, 251, 141, 1)
HSLhsl(139, 95%, 67%)
HSV / HSBhsv(139, 64%, 98%)
HWBhwb(139 35% 2%)
CMYKcmyk(64%, 0%, 44%, 2%)
LABlab(88.5 -65.0 40.6)
LCHlch(88.5 76.6 148.0)
OKLCHoklch(0.879 0.202 150.4)
XYZ (D65)xyz(43.52, 73.09, 37.01)
Decimal5962637
Display P3color(display-p3 0.353 0.984 0.553)
Web-safe#66FF99

Copy-ready code

every platformclick to select
/* CSS */
color: #5afb8d;
background-color: #5afb8d;
/* CSS custom property */
--brand: #5afb8d;
/* Tailwind (arbitrary) */
class="text-[#5afb8d] bg-[#5afb8d]"
/* SCSS */
$brand: #5afb8d;
/* SwiftUI */
Color(red: 0.353, green: 0.984, blue: 0.553)
/* UIKit */
UIColor(red: 0.353, green: 0.984, blue: 0.553, alpha: 1)
/* Android XML */
<color name="brand">#5AFB8D</color>
/* Android Compose */
Color(0xFF5AFB8D)
/* Flutter */
Color(0xFF5AFB8D)
/* Python / OpenCV (BGR) */
(141, 251, 90)
/* Python / PIL (RGB) */
(90, 251, 141)
/* Java AWT */
new Color(90, 251, 141)
/* .NET */
Color.FromArgb(255, 90, 251, 141)
/* OpenGL / Unity (0–1) */
(0.3529f, 0.9843f, 0.5529f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{90,251,141}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #5afb8d 85%, white);
border-color: color-mix(in oklab, #5afb8d 40%, transparent);
/* theme-aware in one line */
color: light-dark(#037D29, #D3EEDB);
/* relative colour syntax */
--hover: hsl(from #5afb8d 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: #F1FDF5;
  --brand-100: #E4FCEB;
  --brand-200: #C2FAD3;
  --brand-300: #91FCB3;
  --brand-400: #5afb8d;
  --brand-500: #24FA68;
  --brand-600: #06EF50;
  --brand-700: #05C742;
  --brand-800: #049F35;
  --brand-900: #08732A;
  --brand-950: #05481A;
  --brand: #5afb8d;
  --brand-ink: #000000;
  --brand-surface: #F4FAF6;
  --brand-border: #C0EDCE;
  --brand-hover: #37FA75;
  --brand-pressed: #14F95D;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142419;
    --brand-ink: #D3EEDB;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F1FDF5',
        100: '#E4FCEB',
        200: '#C2FAD3',
        300: '#91FCB3',
        400: '#5afb8d',
        500: '#24FA68',
        600: '#06EF50',
        700: '#05C742',
        800: '#049F35',
        900: '#08732A',
        950: '#05481A',
        DEFAULT: '#5afb8d',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F1FDF5,
  '100': #E4FCEB,
  '200': #C2FAD3,
  '300': #91FCB3,
  '400': #5afb8d,
  '500': #24FA68,
  '600': #06EF50,
  '700': #05C742,
  '800': #049F35,
  '900': #08732A,
  '950': #05481A,
);
$brand-base: #5afb8d;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F1FDF5", "$type": "color" },
      "100": { "$value": "#E4FCEB", "$type": "color" },
      "200": { "$value": "#C2FAD3", "$type": "color" },
      "300": { "$value": "#91FCB3", "$type": "color" },
      "400": { "$value": "#5afb8d", "$type": "color" },
      "500": { "$value": "#24FA68", "$type": "color" },
      "600": { "$value": "#06EF50", "$type": "color" },
      "700": { "$value": "#05C742", "$type": "color" },
      "800": { "$value": "#049F35", "$type": "color" },
      "900": { "$value": "#08732A", "$type": "color" },
      "950": { "$value": "#05481A", "$type": "color" }
    },
    "brandInk": { "$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 #5afb8d · 15.62:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.34:1
AA fail · AA large fail · AAA fail
Aa
Black text · 15.62:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #5afb8d as text scores 1.34:1 on white and 15.62:1 on black.
Best tinted ink on it, if plain black or white feels flat: #037D29 at 3.93:1.

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
#03862D · 4.72:1
AA on white−40% L
#03862D
The quick fox
#026321 · 7.48:1
AAA on white−47% L
#026321
The quick fox
#5afb8d · 15.62:1
AA on blackalready passes
#5afb8d
The quick fox
#5afb8d · 15.62:1
AAA on blackalready passes
#5afb8d

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #04A938 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
#5afb8d on white: 1.34:1
AA ✗ fail · AA-large · AAA
Aa
#5afb8d on black: 15.62:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #5afb8d as text on that neutral, and that neutral as text on #5afb8d.

NeutralRatioBoth directions
White1.34:1AaAa
Slate 501.29:1AaAa
Slate 1001.23:1AaAa
Slate 2001.09:1AaAa
Slate 3001.10:1AaAa
Slate 4001.91:1AaAa
Slate 5003.54:1AaAa
Slate 6005.64:1AaAa
Slate 7007.70:1AaAa
Slate 80010.88:1AaAa
Slate 90013.28:1AaAa
Black15.62:1AaAa
Colour vision deficiency
true color
protanopia · #FCE785
deuteranopia · #E8D894
tritanopia · #13F7E0

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. #5afb8d 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.

#F1FDF5
#E4FCEB
#C2FAD3
#91FCB3
#5afb8d
#24FA68
#06EF50
#05C742
#049F35
#08732A
#05481A
Base = 400Lightest = 50 · #F1FDF5Darkest = 950 · #05481AText step on white = 900
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 0.050 150.4);
  --brand-100: oklch(0.94 0.081 150.4);
  --brand-200: oklch(0.88 0.121 150.4);
  --brand-300: oklch(0.80 0.157 150.4);
  --brand-400: oklch(0.72 0.186 150.4);
  --brand-500: oklch(0.64 0.202 150.4);
  --brand-600: oklch(0.56 0.202 150.4);
  --brand-700: oklch(0.48 0.190 150.4);
  --brand-800: oklch(0.40 0.170 150.4);
  --brand-900: oklch(0.32 0.141 150.4);
  --brand-950: oklch(0.24 0.111 150.4);
}

Colors that work with #5afb8d

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#C0EDCE
Hairlines and dividers
Muted text#4B9B64
Captions on the surface
Accent#CB01BD
Second voice, not a rival
Dark variant#037D29
Hover, pressed, headers
Light variant#E6FEEE
Selected rows, tints
Dark surface#142419
Dark-mode background
Hover#37FA75
One step down in lightness
Pressed#14F95D
Two steps down
Disabled#DCE9E0
Chroma pulled out
Focus ring#6BFF9A
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 #5afb8d

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
  • Card and section backgrounds
  • 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
  • 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 #037D29
Safe as a 1px border on white
No — use #04A938

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.

At this chroma the association is amplified — it will dominate anything placed beside it, so give it space and use it sparingly. 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
  • FormalityLow
  • EnergyHigh
  • Weight33/100
  • 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#FB5AC8
Analogous left#78FB5A
Analogous right#5AFBDE
Split-complement 1#DE5AFB
Split-complement 2#FB5A78
Triadic 1#8D5AFB
Triadic 2#FB8D5A
Tetradic#5A78FB
On the wheel
Base+30°−30°+120°+240°+180°139°

#5afb8d sits at 139°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red35.3%
Green98.4%
Blue55.3%
R · 0–255
90
0x5a
G · 0–255
251
0xfb
B · 0–255
141
0x8d

CMYK percentages

Cyan64.1%
Magenta0.0%
Yellow43.8%
Key (black)1.6%

Total ink coverage is 109%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#5afb8d text on a black background

contrast 15.62:1

Card sample

#5afb8d text on a white background

contrast 1.34:1

Card sample

#5afb8d on grey

1.23:1

#5afb8d on its own surface

1.27:1

#5afb8d on its dark surface

12.05:1

CSS3 live lab

Text font color

The quick brown fox

color: #5afb8d;
Background color
Panel with #5afb8d background
background-color: #5afb8d;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #5afb8d;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(90, 251, 141, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(90, 251, 141, 0.45);
Border & gradient
Gradient panel
border: 3px solid #5afb8d;
background: linear-gradient(135deg, #5afb8d, #5AFBF8);
Gradient text

Gradient headline

background: linear-gradient(90deg, #5afb8d, #5AD5FB);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #5afb8d;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #5afb8d;
caret-color: #5afb8d;
Left rule
Pull quote or callout
border-left: 4px solid #5afb8d;
Ring + tint
Selected chip
background: #E6FEEE;
box-shadow: inset 0 0 0 2px #5afb8d;
Conic badge
68%
background: conic-gradient(#5afb8d 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #5afb8d 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, 251, 141, 0.5)
rgb(90 251 141 / 50%)
#5afb8d80
hsl(139 95% 67% / 50%)
color-mix(in srgb, #5afb8d 50%, transparent)
Alpha8-digit hexFlat on white
10%#5afb8d1a#EFFFF4
20%#5afb8d33#DEFEE8
40%#5afb8d66#BDFDD1
60%#5afb8d99#9CFDBB
80%#5afb8dcc#7BFCA4

Gradients from #5afb8d

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, #96FCB6, #5afb8d 45%, #037D29);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #5afb8d, #3CEEFA);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #5afb8d, #FB5AC8);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #B4FDCB 0%, #5afb8d 45%, #037D29 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%, #AAFC8C 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #78FCEF 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #037D29 0%, transparent 65%), #5afb8d;

Monochromatic scale

Palettes built from #5afb8d

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.

#5afb8d 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

Sits outside most CMYK gamuts — expect a duller press result, or specify a spot ink.

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 15.62:1.

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.

#5afb8d, answered

What color is #5afb8d?

#5afb8d is a light electric green, closest to Spring Green (ΔE2000 2.9). It sits at 139° on the hue wheel with 95% saturation and 67% lightness, which reads as cool.

What is the RGB value of #5afb8d?

rgb(90, 251, 141) — 90 red, 251 green and 141 blue out of 255, or 35.3% / 98.4% / 55.3% by channel.

What is #5afb8d in HSL and HSV?

hsl(139, 95%, 67%) and hsv(139, 64%, 98%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #5afb8d a light or a dark color?

It is a light color. Relative luminance is 0.7309 and perceived brightness is 80%, so black text on it reaches 15.62:1.

Should I use black or white text on #5afb8d?

Black. It scores 15.62:1 against #5afb8d, versus 1.34:1 for white — AAA at any size.

Is #5afb8d accessible on a white background?

#5afb8d on white scores 1.34:1, which fails WCAG AA at every size. Darken it to #03862D to reach 4.5:1, or #026321 for 7:1.

What is the complementary color of #5afb8d?

#FB5AC8 sits directly opposite on the wheel. Softer options are the split-complements #DE5AFB and #FB5A78, which give the same contrast with far less vibration.

What colors go well with #5afb8d?

For interface work: #F4FAF6 as the surface, #C0EDCE for borders, #4B9B64 for secondary text, #CB01BD as an accent and #037D29 for hover and pressed states. For a palette, the analogous pair #78FB5A and #5AFBDE stays calm, while #FB5AC8 is the loudest partner.

What is #5afb8d in CMYK for printing?

cmyk(64%, 0%, 44%, 2%). This is a screen-to-ink approximation — a color this saturated sits outside most CMYK gamuts and will print duller than it looks here.

Is #5afb8d 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 #62FB5A; nudged cooler, #58FDC9.

Which Tailwind color is closest to #5afb8d?

The green family — its 500 step is #22c55e, ΔE2000 12.8 away. That is a visible difference, so define #5afb8d as a custom token rather than reaching for the built-in.

How do I use #5afb8d in Tailwind CSS?

Inline it as an arbitrary value with bg-[#5afb8d] or text-[#5afb8d], 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 #5afb8d with 50% opacity?

rgba(90, 251, 141, 0.5), or #5afb8d80 in eight-digit hex. Over white that composites to #ADFDC6; over black, #2D7E47.

Is #5afb8d a web-safe color?

No. The nearest web-safe colour is #66FF99, ΔE2000 1.6 away. The palette only matters for legacy displays and some email clients now.

What does the color #5afb8d 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 #5afb8d?

The safest is same-hue elevation: linear-gradient(135deg, #96FCB6, #5afb8d 45%, #037D29). For more colour, a short hue run to #3CEEFA keeps it rich without turning muddy.

Work with #5afb8d in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #5afb8d at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.