Skip to content
green · cool

#57eb3b

a balanced, electric green · cool · closest name: Lime

Token name suggestion: Atlas Basil

RGB
87, 235, 59
HSL
111°, 82%, 58%
CMYK
63, 0, 75, 8
Luminance
0.6176

#57eb3b is a balanced electric green, 111° on the wheel and 59/100 on the cool side. Put black text on it (13.35:1). As text it scores 1.57:1 on white — use #21890E instead. Nearest name is Lime, nearest Tailwind family is lime.

hsl(111 82% 58%)rgb(87 235 59)Base step 500AAA inkCool

At a glance

Every number on this page in one read: what #57eb3b is made of, how bright it looks, and which way it leans.

Hex
#57eb3b
Hue
111°
green
Saturation
82%
electric
Lightness
58%
balanced
Brightness
92%
HSV value
Perceived
73%
weighted brightness
Luminance
0.6176
WCAG relative
Temperature
Cool
59/100 cool
Color family
Green
Tone
Electric
Best ink
Black
13.35:1
Closest name
Lime
ΔE2000 5
Chroma
97.7
LCH, 0–130ish
OKLCH L
0.829
perceptual lightness
Tailwind
lime
500 · ΔE 9.3
Web-safe
#66FF33
nearest of 216
Where it sits
Hue111° of 360°
Saturation82%
Lightness58%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #57eb3b.

Temperature
Warm ← → Cool59% 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%
Green96%
Blue1%

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

Every format

HEX#57eb3b
HEX (8-digit)#57eb3bff
RGBrgb(87, 235, 59)
RGBArgba(87, 235, 59, 1)
HSLhsl(111, 82%, 58%)
HSV / HSBhsv(110, 75%, 92%)
HWBhwb(111 23% 8%)
CMYKcmyk(63%, 0%, 75%, 8%)
LABlab(82.8 -69.4 68.8)
LCHlch(82.8 97.7 135.2)
OKLCHoklch(0.829 0.245 140.9)
XYZ (D65)xyz(34.43, 61.76, 14.24)
Decimal5761851
Display P3color(display-p3 0.341 0.922 0.231)
Web-safe#66FF33

Copy-ready code

every platformclick to select
/* CSS */
color: #57eb3b;
background-color: #57eb3b;
/* CSS custom property */
--brand: #57eb3b;
/* Tailwind (arbitrary) */
class="text-[#57eb3b] bg-[#57eb3b]"
/* SCSS */
$brand: #57eb3b;
/* SwiftUI */
Color(red: 0.341, green: 0.922, blue: 0.231)
/* UIKit */
UIColor(red: 0.341, green: 0.922, blue: 0.231, alpha: 1)
/* Android XML */
<color name="brand">#57EB3B</color>
/* Android Compose */
Color(0xFF57EB3B)
/* Flutter */
Color(0xFF57EB3B)
/* Python / OpenCV (BGR) */
(59, 235, 87)
/* Python / PIL (RGB) */
(87, 235, 59)
/* Java AWT */
new Color(87, 235, 59)
/* .NET */
Color.FromArgb(255, 87, 235, 59)
/* OpenGL / Unity (0–1) */
(0.3412f, 0.9216f, 0.2314f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{87,235,59}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #57eb3b 85%, white);
border-color: color-mix(in oklab, #57eb3b 40%, transparent);
/* theme-aware in one line */
color: light-dark(#1C740C, #D7EED3);
/* relative colour syntax */
--hover: hsl(from #57eb3b 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: #F4FCF2;
  --brand-100: #E9F9E6;
  --brand-200: #CEF6C6;
  --brand-300: #A8F599;
  --brand-400: #7CEF66;
  --brand-500: #57eb3b;
  --brand-600: #36DE17;
  --brand-700: #2DB913;
  --brand-800: #24940F;
  --brand-900: #1E6B0F;
  --brand-950: #13430A;
  --brand: #57eb3b;
  --brand-ink: #000000;
  --brand-surface: #F5FAF4;
  --brand-border: #C7EDC0;
  --brand-hover: #3BE81A;
  --brand-pressed: #31CA15;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #162414;
    --brand-ink: #D7EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4FCF2',
        100: '#E9F9E6',
        200: '#CEF6C6',
        300: '#A8F599',
        400: '#7CEF66',
        500: '#57eb3b',
        600: '#36DE17',
        700: '#2DB913',
        800: '#24940F',
        900: '#1E6B0F',
        950: '#13430A',
        DEFAULT: '#57eb3b',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4FCF2,
  '100': #E9F9E6,
  '200': #CEF6C6,
  '300': #A8F599,
  '400': #7CEF66,
  '500': #57eb3b,
  '600': #36DE17,
  '700': #2DB913,
  '800': #24940F,
  '900': #1E6B0F,
  '950': #13430A,
);
$brand-base: #57eb3b;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4FCF2", "$type": "color" },
      "100": { "$value": "#E9F9E6", "$type": "color" },
      "200": { "$value": "#CEF6C6", "$type": "color" },
      "300": { "$value": "#A8F599", "$type": "color" },
      "400": { "$value": "#7CEF66", "$type": "color" },
      "500": { "$value": "#57eb3b", "$type": "color" },
      "600": { "$value": "#36DE17", "$type": "color" },
      "700": { "$value": "#2DB913", "$type": "color" },
      "800": { "$value": "#24940F", "$type": "color" },
      "900": { "$value": "#1E6B0F", "$type": "color" },
      "950": { "$value": "#13430A", "$type": "color" }
    },
    "brandInk": { "$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 #57eb3b · 13.35:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.57:1
AA fail · AA large fail · AAA fail
Aa
Black text · 13.35:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #57eb3b as text scores 1.57:1 on white and 13.35:1 on black.
Best tinted ink on it, if plain black or white feels flat: #1C740C at 3.76:1.

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
#21890E · 4.52:1
AA on white−28% L
#21890E
The quick fox
#18640A · 7.33:1
AAA on white−36% L
#18640A
The quick fox
#57eb3b · 13.35:1
AA on blackalready passes
#57eb3b
The quick fox
#57eb3b · 13.35:1
AAA on blackalready passes
#57eb3b

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #29A911 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
#57eb3b on white: 1.57:1
AA ✗ fail · AA-large · AAA
Aa
#57eb3b on black: 13.35:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #57eb3b as text on that neutral, and that neutral as text on #57eb3b.

NeutralRatioBoth directions
White1.57:1AaAa
Slate 501.50:1AaAa
Slate 1001.44:1AaAa
Slate 2001.28:1AaAa
Slate 3001.06:1AaAa
Slate 4001.63:1AaAa
Slate 5003.03:1AaAa
Slate 6004.82:1AaAa
Slate 7006.58:1AaAa
Slate 8009.30:1AaAa
Slate 90011.35:1AaAa
Black13.35:1AaAa
Colour vision deficiency
true color
protanopia · #F1D511
deuteranopia · #DFCA4E
tritanopia · #3EE4CA

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. #57eb3b 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.

#F4FCF2
#E9F9E6
#CEF6C6
#A8F599
#7CEF66
#57eb3b
#36DE17
#2DB913
#24940F
#1E6B0F
#13430A
Base = 500Lightest = 50 · #F4FCF2Darkest = 950 · #13430AText 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 0.061 140.9);
  --brand-100: oklch(0.94 0.098 140.9);
  --brand-200: oklch(0.88 0.147 140.9);
  --brand-300: oklch(0.80 0.191 140.9);
  --brand-400: oklch(0.72 0.225 140.9);
  --brand-500: oklch(0.64 0.245 140.9);
  --brand-600: oklch(0.56 0.245 140.9);
  --brand-700: oklch(0.48 0.230 140.9);
  --brand-800: oklch(0.40 0.206 140.9);
  --brand-900: oklch(0.32 0.171 140.9);
  --brand-950: oklch(0.24 0.135 140.9);
}

Colors that work with #57eb3b

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#F5FAF4
Tinted page background
Border#C7EDC0
Hairlines and dividers
Muted text#579B4B
Captions on the surface
Accent#A436EF
Second voice, not a rival
Dark variant#1C740C
Hover, pressed, headers
Light variant#EBFDE8
Selected rows, tints
Dark surface#162414
Dark-mode background
Hover#3BE81A
One step down in lightness
Pressed#31CA15
Two steps down
Disabled#C3D6C0
Chroma pulled out
Focus ring#60F743
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 #57eb3b

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
  • Brand accents, badges and data highlights
  • Chart series and data categories
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • 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 #1C740C
Safe as a 1px border on white
No — use #29A911

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 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
  • FormalityLow
  • EnergyHigh
  • Weight42/100
  • TemperatureCool
  • ApproachabilityBalanced

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#CF3BEB
Analogous left#AFEB3B
Analogous right#3BEB77
Split-complement 1#773BEB
Split-complement 2#EB3BAF
Triadic 1#3B57EB
Triadic 2#EB3B57
Tetradic#3BAFEB
On the wheel
Base+30°−30°+120°+240°+180°111°

#57eb3b sits at 111°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red34.1%
Green92.2%
Blue23.1%
R · 0–255
87
0x57
G · 0–255
235
0xeb
B · 0–255
59
0x3b

CMYK percentages

Cyan63.0%
Magenta0.0%
Yellow74.9%
Key (black)7.8%

Total ink coverage is 146%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#57eb3b text on a black background

contrast 13.35:1

Card sample

#57eb3b text on a white background

contrast 1.57:1

Card sample

#57eb3b on grey

1.44:1

#57eb3b on its own surface

1.49:1

#57eb3b on its dark surface

10.30:1

CSS3 live lab

Text font color

The quick brown fox

color: #57eb3b;
Background color
Panel with #57eb3b background
background-color: #57eb3b;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #57eb3b;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(87, 235, 59, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(87, 235, 59, 0.45);
Border & gradient
Gradient panel
border: 3px solid #57eb3b;
background: linear-gradient(135deg, #57eb3b, #3BEB94);
Gradient text

Gradient headline

background: linear-gradient(90deg, #57eb3b, #3BEBC0);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #57eb3b;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #57eb3b;
caret-color: #57eb3b;
Left rule
Pull quote or callout
border-left: 4px solid #57eb3b;
Ring + tint
Selected chip
background: #EBFDE8;
box-shadow: inset 0 0 0 2px #57eb3b;
Conic badge
68%
background: conic-gradient(#57eb3b 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #57eb3b 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(87, 235, 59, 0.5)
rgb(87 235 59 / 50%)
#57eb3b80
hsl(111 82% 58% / 50%)
color-mix(in srgb, #57eb3b 50%, transparent)
Alpha8-digit hexFlat on white
10%#57eb3b1a#EEFDEB
20%#57eb3b33#DDFBD8
40%#57eb3b66#BCF7B1
60%#57eb3b99#9AF389
80%#57eb3bcc#79EF62

Gradients from #57eb3b

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, #86F172, #57eb3b 45%, #1C740C);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #57eb3b, #1FE896);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #57eb3b, #CF3BEB);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #9EF38E 0%, #57eb3b 45%, #1C740C 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F5FAF4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #CDF069 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #57EE97 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #1C740C 0%, transparent 65%), #57eb3b;

Monochromatic scale

Palettes built from #57eb3b

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.

#57eb3b 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

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 13.35:1.

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.

#57eb3b, answered

What color is #57eb3b?

#57eb3b is a balanced electric green, closest to Lime (ΔE2000 5). It sits at 111° on the hue wheel with 82% saturation and 58% lightness, which reads as cool.

What is the RGB value of #57eb3b?

rgb(87, 235, 59) — 87 red, 235 green and 59 blue out of 255, or 34.1% / 92.2% / 23.1% by channel.

What is #57eb3b in HSL and HSV?

hsl(111, 82%, 58%) and hsv(110, 75%, 92%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #57eb3b a light or a dark color?

It is a light color. Relative luminance is 0.6176 and perceived brightness is 73%, so black text on it reaches 13.35:1.

Should I use black or white text on #57eb3b?

Black. It scores 13.35:1 against #57eb3b, versus 1.57:1 for white — AAA at any size.

Is #57eb3b accessible on a white background?

#57eb3b on white scores 1.57:1, which fails WCAG AA at every size. Darken it to #21890E to reach 4.5:1, or #18640A for 7:1.

What is the complementary color of #57eb3b?

#CF3BEB sits directly opposite on the wheel. Softer options are the split-complements #773BEB and #EB3BAF, which give the same contrast with far less vibration.

What colors go well with #57eb3b?

For interface work: #F5FAF4 as the surface, #C7EDC0 for borders, #579B4B for secondary text, #A436EF as an accent and #1C740C for hover and pressed states. For a palette, the analogous pair #AFEB3B and #3BEB77 stays calm, while #CF3BEB is the loudest partner.

What is #57eb3b in CMYK for printing?

cmyk(63%, 0%, 75%, 8%). 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 #57eb3b warm or cool?

Cool — it scores 59 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #97EB3B; nudged cooler, #39ED5E.

Which Tailwind color is closest to #57eb3b?

The lime family — its 500 step is #84cc16, ΔE2000 9.3 away. That is a visible difference, so define #57eb3b as a custom token rather than reaching for the built-in.

How do I use #57eb3b in Tailwind CSS?

Inline it as an arbitrary value with bg-[#57eb3b] or text-[#57eb3b], 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 #57eb3b with 50% opacity?

rgba(87, 235, 59, 0.5), or #57eb3b80 in eight-digit hex. Over white that composites to #ABF59D; over black, #2C761E.

Is #57eb3b a web-safe color?

No. The nearest web-safe colour is #66FF33, ΔE2000 4.6 away. The palette only matters for legacy displays and some email clients now.

What does the color #57eb3b 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 #57eb3b?

The safest is same-hue elevation: linear-gradient(135deg, #86F172, #57eb3b 45%, #1C740C). For more colour, a short hue run to #1FE896 keeps it rich without turning muddy.

Work with #57eb3b in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #57eb3b at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.