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green · neutral

#bfef63

a light, electric green · neutral · closest name: Green Yellow

Token name suggestion: Meadow Basil

RGB
191, 239, 99
HSL
81°, 81%, 66%
CMYK
20, 0, 59, 6
Luminance
0.7371

#bfef63 is a light electric green, 81° on the wheel and 42/100 on the cool side. Put black text on it (15.74:1). As text it scores 1.33:1 on white — use #577E0D instead. Nearest name is Green Yellow, nearest Tailwind family is lime.

hsl(81 81% 66%)rgb(191 239 99)Base step 400AAA inkNeutral

At a glance

Every number on this page in one read: what #bfef63 is made of, how bright it looks, and which way it leans.

Hex
#bfef63
Hue
81°
green
Saturation
81%
electric
Lightness
66%
light
Brightness
94%
HSV value
Perceived
84%
weighted brightness
Luminance
0.7371
WCAG relative
Temperature
Neutral
42/100 cool
Color family
Green
Tone
Electric
Best ink
Black
15.74:1
Closest name
Green Yellow
ΔE2000 6
Chroma
71.1
LCH, 0–130ish
OKLCH L
0.891
perceptual lightness
Tailwind
lime
500 · ΔE 10.1
Web-safe
#CCFF66
nearest of 216
Where it sits
Hue81° of 360°
Saturation81%
Lightness66%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #bfef63.

Temperature
Warm ← → Cool42% cool

Reads neutral. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.

Luminance by channel
Red15%
Green84%
Blue1%

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

Every format

HEX#bfef63
HEX (8-digit)#bfef63ff
RGBrgb(191, 239, 99)
RGBArgba(191, 239, 99, 1)
HSLhsl(81, 81%, 66%)
HSV / HSBhsv(81, 59%, 94%)
HWBhwb(81 39% 6%)
CMYKcmyk(20%, 0%, 59%, 6%)
LABlab(88.8 -36.0 61.3)
LCHlch(88.8 71.1 120.4)
OKLCHoklch(0.891 0.175 125.7)
XYZ (D65)xyz(54.60, 73.71, 23.15)
Decimal12578659
Display P3color(display-p3 0.749 0.937 0.388)
Web-safe#CCFF66

Copy-ready code

every platformclick to select
/* CSS */
color: #bfef63;
background-color: #bfef63;
/* CSS custom property */
--brand: #bfef63;
/* Tailwind (arbitrary) */
class="text-[#bfef63] bg-[#bfef63]"
/* SCSS */
$brand: #bfef63;
/* SwiftUI */
Color(red: 0.749, green: 0.937, blue: 0.388)
/* UIKit */
UIColor(red: 0.749, green: 0.937, blue: 0.388, alpha: 1)
/* Android XML */
<color name="brand">#BFEF63</color>
/* Android Compose */
Color(0xFFBFEF63)
/* Flutter */
Color(0xFFBFEF63)
/* Python / OpenCV (BGR) */
(99, 239, 191)
/* Python / PIL (RGB) */
(191, 239, 99)
/* Java AWT */
new Color(191, 239, 99)
/* .NET */
Color.FromArgb(255, 191, 239, 99)
/* OpenGL / Unity (0–1) */
(0.7490f, 0.9373f, 0.3882f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{191,239,99}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #bfef63 85%, white);
border-color: color-mix(in oklab, #bfef63 40%, transparent);
/* theme-aware in one line */
color: light-dark(#50740C, #E5EED3);
/* relative colour syntax */
--hover: hsl(from #bfef63 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: #F9FCF2;
  --brand-100: #F3F9E6;
  --brand-200: #E5F6C6;
  --brand-300: #D5F599;
  --brand-400: #bfef63;
  --brand-500: #ABEA33;
  --brand-600: #9ADE17;
  --brand-700: #80B913;
  --brand-800: #66940F;
  --brand-900: #4C6B0F;
  --brand-950: #2F430A;
  --brand: #bfef63;
  --brand-ink: #000000;
  --brand-surface: #F8FAF4;
  --brand-border: #DDEDC0;
  --brand-hover: #B2EC43;
  --brand-pressed: #A4E822;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #1F2414;
    --brand-ink: #E5EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F9FCF2',
        100: '#F3F9E6',
        200: '#E5F6C6',
        300: '#D5F599',
        400: '#bfef63',
        500: '#ABEA33',
        600: '#9ADE17',
        700: '#80B913',
        800: '#66940F',
        900: '#4C6B0F',
        950: '#2F430A',
        DEFAULT: '#bfef63',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F9FCF2,
  '100': #F3F9E6,
  '200': #E5F6C6,
  '300': #D5F599,
  '400': #bfef63,
  '500': #ABEA33,
  '600': #9ADE17,
  '700': #80B913,
  '800': #66940F,
  '900': #4C6B0F,
  '950': #2F430A,
);
$brand-base: #bfef63;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F9FCF2", "$type": "color" },
      "100": { "$value": "#F3F9E6", "$type": "color" },
      "200": { "$value": "#E5F6C6", "$type": "color" },
      "300": { "$value": "#D5F599", "$type": "color" },
      "400": { "$value": "#bfef63", "$type": "color" },
      "500": { "$value": "#ABEA33", "$type": "color" },
      "600": { "$value": "#9ADE17", "$type": "color" },
      "700": { "$value": "#80B913", "$type": "color" },
      "800": { "$value": "#66940F", "$type": "color" },
      "900": { "$value": "#4C6B0F", "$type": "color" },
      "950": { "$value": "#2F430A", "$type": "color" }
    },
    "brandInk": { "$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 #bfef63 · 15.74:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.33:1
AA fail · AA large fail · AAA fail
Aa
Black text · 15.74:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #bfef63 as text scores 1.33:1 on white and 15.74:1 on black.
Best tinted ink on it, if plain black or white feels flat: #50740C at 4.09:1.

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
#577E0D · 4.78:1
AA on white−39% L
#577E0D
The quick fox
#415E0A · 7.42:1
AAA on white−46% L
#415E0A
The quick fox
#bfef63 · 15.74:1
AA on blackalready passes
#bfef63
The quick fox
#bfef63 · 15.74:1
AAA on blackalready passes
#bfef63

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #71A311 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
#bfef63 on white: 1.33:1
AA ✗ fail · AA-large · AAA
Aa
#bfef63 on black: 15.74:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #bfef63 as text on that neutral, and that neutral as text on #bfef63.

NeutralRatioBoth directions
White1.33:1AaAa
Slate 501.28:1AaAa
Slate 1001.22:1AaAa
Slate 2001.08:1AaAa
Slate 3001.11:1AaAa
Slate 4001.92:1AaAa
Slate 5003.57:1AaAa
Slate 6005.68:1AaAa
Slate 7007.76:1AaAa
Slate 80010.97:1AaAa
Slate 90013.38:1AaAa
Black15.74:1AaAa
Colour vision deficiency
true color
protanopia · #FBE154
deuteranopia · #F4DE6D
tritanopia · #C6E5D1

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. #bfef63 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.

#F9FCF2
#F3F9E6
#E5F6C6
#D5F599
#bfef63
#ABEA33
#9ADE17
#80B913
#66940F
#4C6B0F
#2F430A
Base = 400Lightest = 50 · #F9FCF2Darkest = 950 · #2F430AText 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 0.044 125.7);
  --brand-100: oklch(0.94 0.070 125.7);
  --brand-200: oklch(0.88 0.105 125.7);
  --brand-300: oklch(0.80 0.137 125.7);
  --brand-400: oklch(0.72 0.161 125.7);
  --brand-500: oklch(0.64 0.175 125.7);
  --brand-600: oklch(0.56 0.175 125.7);
  --brand-700: oklch(0.48 0.165 125.7);
  --brand-800: oklch(0.40 0.147 125.7);
  --brand-900: oklch(0.32 0.123 125.7);
  --brand-950: oklch(0.24 0.096 125.7);
}

Colors that work with #bfef63

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#F8FAF4
Tinted page background
Border#DDEDC0
Hairlines and dividers
Muted text#7F9B4B
Captions on the surface
Accent#6D60F2
Second voice, not a rival
Dark variant#50740C
Hover, pressed, headers
Light variant#F6FDE8
Selected rows, tints
Dark surface#1F2414
Dark-mode background
Hover#B2EC43
One step down in lightness
Pressed#A4E822
Two steps down
Disabled#E3E8DB
Chroma pulled out
Focus ring#C9F86E
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 #bfef63

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 #50740C
Safe as a 1px border on white
No — use #71A311

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
  • Weight34/100
  • TemperatureNeutral
  • ApproachabilityHigh

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#9363EF
Analogous left#EFD963
Analogous right#79EF63
Split-complement 1#6379EF
Split-complement 2#D963EF
Triadic 1#63BFEF
Triadic 2#EF63BF
Tetradic#63EFD9
On the wheel
Base+30°−30°+120°+240°+180°81°

#bfef63 sits at 81°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red74.9%
Green93.7%
Blue38.8%
R · 0–255
191
0xbf
G · 0–255
239
0xef
B · 0–255
99
0x63

CMYK percentages

Cyan20.1%
Magenta0.0%
Yellow58.6%
Key (black)6.3%

Total ink coverage is 85%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#bfef63 text on a black background

contrast 15.74:1

Card sample

#bfef63 text on a white background

contrast 1.33:1

Card sample

#bfef63 on grey

1.22:1

#bfef63 on its own surface

1.27:1

#bfef63 on its dark surface

11.92:1

CSS3 live lab

Text font color

The quick brown fox

color: #bfef63;
Background color
Panel with #bfef63 background
background-color: #bfef63;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #bfef63;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(191, 239, 99, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(191, 239, 99, 0.45);
Border & gradient
Gradient panel
border: 3px solid #bfef63;
background: linear-gradient(135deg, #bfef63, #63EF65);
Gradient text

Gradient headline

background: linear-gradient(90deg, #bfef63, #63EF87);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #bfef63;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #bfef63;
caret-color: #bfef63;
Left rule
Pull quote or callout
border-left: 4px solid #bfef63;
Ring + tint
Selected chip
background: #F6FDE8;
box-shadow: inset 0 0 0 2px #bfef63;
Conic badge
68%
background: conic-gradient(#bfef63 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #bfef63 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(191, 239, 99, 0.5)
rgb(191 239 99 / 50%)
#bfef6380
hsl(81 81% 66% / 50%)
color-mix(in srgb, #bfef63 50%, transparent)
Alpha8-digit hexFlat on white
10%#bfef631a#F9FDEF
20%#bfef6333#F2FCE0
40%#bfef6366#E5F9C1
60%#bfef6399#D9F5A1
80%#bfef63cc#CCF282

Gradients from #bfef63

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, #D6F59B, #bfef63 45%, #50740C);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #bfef63, #47EC57);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #bfef63, #9363EF);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #E1F8B6 0%, #bfef63 45%, #50740C 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F8FAF4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #F4DC91 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #87F27F 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #50740C 0%, transparent 65%), #bfef63;

Monochromatic scale

Palettes built from #bfef63

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.

#bfef63 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 15.74:1.

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.

#bfef63, answered

What color is #bfef63?

#bfef63 is a light electric green, closest to Green Yellow (ΔE2000 6). It sits at 81° on the hue wheel with 81% saturation and 66% lightness, which reads as neutral.

What is the RGB value of #bfef63?

rgb(191, 239, 99) — 191 red, 239 green and 99 blue out of 255, or 74.9% / 93.7% / 38.8% by channel.

What is #bfef63 in HSL and HSV?

hsl(81, 81%, 66%) and hsv(81, 59%, 94%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #bfef63 a light or a dark color?

It is a light color. Relative luminance is 0.7371 and perceived brightness is 84%, so black text on it reaches 15.74:1.

Should I use black or white text on #bfef63?

Black. It scores 15.74:1 against #bfef63, versus 1.33:1 for white — AAA at any size.

Is #bfef63 accessible on a white background?

#bfef63 on white scores 1.33:1, which fails WCAG AA at every size. Darken it to #577E0D to reach 4.5:1, or #415E0A for 7:1.

What is the complementary color of #bfef63?

#9363EF sits directly opposite on the wheel. Softer options are the split-complements #6379EF and #D963EF, which give the same contrast with far less vibration.

What colors go well with #bfef63?

For interface work: #F8FAF4 as the surface, #DDEDC0 for borders, #7F9B4B for secondary text, #6D60F2 as an accent and #50740C for hover and pressed states. For a palette, the analogous pair #EFD963 and #79EF63 stays calm, while #9363EF is the loudest partner.

What is #bfef63 in CMYK for printing?

cmyk(20%, 0%, 59%, 6%). 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 #bfef63 warm or cool?

Neutral — it scores 42 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #EFEC63; nudged cooler, #8BF161.

Which Tailwind color is closest to #bfef63?

The lime family — its 500 step is #84cc16, ΔE2000 10.1 away. That is a visible difference, so define #bfef63 as a custom token rather than reaching for the built-in.

How do I use #bfef63 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#bfef63] or text-[#bfef63], 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 #bfef63 with 50% opacity?

rgba(191, 239, 99, 0.5), or #bfef6380 in eight-digit hex. Over white that composites to #DFF7B1; over black, #607832.

Is #bfef63 a web-safe color?

No. The nearest web-safe colour is #CCFF66, ΔE2000 3.5 away. The palette only matters for legacy displays and some email clients now.

What does the color #bfef63 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 #bfef63?

The safest is same-hue elevation: linear-gradient(135deg, #D6F59B, #bfef63 45%, #50740C). For more colour, a short hue run to #47EC57 keeps it rich without turning muddy.

Work with #bfef63 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #bfef63 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.