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green · neutral

#6bc903

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

Token name suggestion: Slate Moss

RGB
107, 201, 3
HSL
89°, 97%, 40%
CMYK
47, 0, 99, 21
Luminance
0.4491

#6bc903 is a dark electric green, 89° on the wheel and 49/100 on the cool side. Put black text on it (9.98:1). As text it scores 2.10:1 on white — use #468302 instead. Nearest name is Yellow Green, nearest Tailwind family is lime.

hsl(89 97% 40%)rgb(107 201 3)Base step 700AAA inkNeutral

At a glance

Every number on this page in one read: what #6bc903 is made of, how bright it looks, and which way it leans.

Hex
#6bc903
Hue
89°
green
Saturation
97%
electric
Lightness
40%
dark
Brightness
79%
HSV value
Perceived
65%
weighted brightness
Luminance
0.4491
WCAG relative
Temperature
Neutral
49/100 cool
Color family
Green
Tone
Electric
Best ink
Black
9.98:1
Closest name
Yellow Green
ΔE2000 5.9
Chroma
90.0
LCH, 0–130ish
OKLCH L
0.748
perceptual lightness
Tailwind
lime
500 · ΔE 3
Web-safe
#66CC00
nearest of 216
Where it sits
Hue89° of 360°
Saturation97%
Lightness40%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #6bc903.

Temperature
Warm ← → Cool49% 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
Red7%
Green93%
Blue0%

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

Every format

HEX#6bc903
HEX (8-digit)#6bc903ff
RGBrgb(107, 201, 3)
RGBArgba(107, 201, 3, 1)
HSLhsl(89, 97%, 40%)
HSV / HSBhsv(88, 99%, 79%)
HWBhwb(89 1% 21%)
CMYKcmyk(47%, 0%, 99%, 21%)
LABlab(72.8 -54.3 71.8)
LCHlch(72.8 90.0 127.1)
OKLCHoklch(0.748 0.217 134.8)
XYZ (D65)xyz(26.97, 44.90, 7.33)
Decimal7063811
Display P3color(display-p3 0.420 0.788 0.012)
Web-safe#66CC00

Copy-ready code

every platformclick to select
/* CSS */
color: #6bc903;
background-color: #6bc903;
/* CSS custom property */
--brand: #6bc903;
/* Tailwind (arbitrary) */
class="text-[#6bc903] bg-[#6bc903]"
/* SCSS */
$brand: #6bc903;
/* SwiftUI */
Color(red: 0.420, green: 0.788, blue: 0.012)
/* UIKit */
UIColor(red: 0.420, green: 0.788, blue: 0.012, alpha: 1)
/* Android XML */
<color name="brand">#6BC903</color>
/* Android Compose */
Color(0xFF6BC903)
/* Flutter */
Color(0xFF6BC903)
/* Python / OpenCV (BGR) */
(3, 201, 107)
/* Python / PIL (RGB) */
(107, 201, 3)
/* Java AWT */
new Color(107, 201, 3)
/* .NET */
Color.FromArgb(255, 107, 201, 3)
/* OpenGL / Unity (0–1) */
(0.4196f, 0.7882f, 0.0118f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{107,201,3}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #6bc903 85%, white);
border-color: color-mix(in oklab, #6bc903 40%, transparent);
/* theme-aware in one line */
color: light-dark(#437E02, #E1EED3);
/* relative colour syntax */
--hover: hsl(from #6bc903 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: #F8FDF1;
  --brand-100: #F0FCE4;
  --brand-200: #DFFBC1;
  --brand-300: #CAFD90;
  --brand-400: #AFFD59;
  --brand-500: #94FC22;
  --brand-600: #80F104;
  --brand-700: #6bc903;
  --brand-800: #56A102;
  --brand-900: #407407;
  --brand-950: #284804;
  --brand: #6bc903;
  --brand-ink: #000000;
  --brand-surface: #F8FAF4;
  --brand-border: #D7EDC0;
  --brand-hover: #58A602;
  --brand-pressed: #468302;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #1C2414;
    --brand-ink: #E1EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F8FDF1',
        100: '#F0FCE4',
        200: '#DFFBC1',
        300: '#CAFD90',
        400: '#AFFD59',
        500: '#94FC22',
        600: '#80F104',
        700: '#6bc903',
        800: '#56A102',
        900: '#407407',
        950: '#284804',
        DEFAULT: '#6bc903',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F8FDF1,
  '100': #F0FCE4,
  '200': #DFFBC1,
  '300': #CAFD90,
  '400': #AFFD59,
  '500': #94FC22,
  '600': #80F104,
  '700': #6bc903,
  '800': #56A102,
  '900': #407407,
  '950': #284804,
);
$brand-base: #6bc903;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F8FDF1", "$type": "color" },
      "100": { "$value": "#F0FCE4", "$type": "color" },
      "200": { "$value": "#DFFBC1", "$type": "color" },
      "300": { "$value": "#CAFD90", "$type": "color" },
      "400": { "$value": "#AFFD59", "$type": "color" },
      "500": { "$value": "#94FC22", "$type": "color" },
      "600": { "$value": "#80F104", "$type": "color" },
      "700": { "$value": "#6bc903", "$type": "color" },
      "800": { "$value": "#56A102", "$type": "color" },
      "900": { "$value": "#407407", "$type": "color" },
      "950": { "$value": "#284804", "$type": "color" }
    },
    "brandInk": { "$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 #6bc903 · 9.98:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.10:1
AA fail · AA large fail · AAA fail
Aa
Black text · 9.98:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #6bc903 as text scores 2.10:1 on white and 9.98:1 on black.
Best tinted ink on it, if plain black or white feels flat: #437E02 at 2.36:1.

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
#468302 · 4.66:1
AA on white−14% L
#468302
The quick fox
#335F01 · 7.56:1
AAA on white−21% L
#335F01
The quick fox
#6bc903 · 9.98:1
AA on blackalready passes
#6bc903
The quick fox
#6bc903 · 9.98:1
AAA on blackalready passes
#6bc903

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #58A602 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
#6bc903 on white: 2.10:1
AA ✗ fail · AA-large · AAA
Aa
#6bc903 on black: 9.98:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #6bc903 as text on that neutral, and that neutral as text on #6bc903.

NeutralRatioBoth directions
White2.10:1AaAa
Slate 502.01:1AaAa
Slate 1001.92:1AaAa
Slate 2001.71:1AaAa
Slate 3001.42:1AaAa
Slate 4001.22:1AaAa
Slate 5002.26:1AaAa
Slate 6003.60:1AaAa
Slate 7004.92:1AaAa
Slate 8006.95:1AaAa
Slate 9008.49:1AaAa
Black9.98:1AaAa
Colour vision deficiency
true color
protanopia · #D1B700
deuteranopia · #C5B02B
tritanopia · #68C1AB

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. #6bc903 is pinned to step 700; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F8FDF1
#F0FCE4
#DFFBC1
#CAFD90
#AFFD59
#94FC22
#80F104
#6bc903
#56A102
#407407
#284804
Base = 700Lightest = 50 · #F8FDF1Darkest = 950 · #284804Text 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 0.054 134.8);
  --brand-100: oklch(0.94 0.087 134.8);
  --brand-200: oklch(0.88 0.130 134.8);
  --brand-300: oklch(0.80 0.169 134.8);
  --brand-400: oklch(0.72 0.200 134.8);
  --brand-500: oklch(0.64 0.217 134.8);
  --brand-600: oklch(0.56 0.217 134.8);
  --brand-700: oklch(0.48 0.204 134.8);
  --brand-800: oklch(0.40 0.182 134.8);
  --brand-900: oklch(0.32 0.152 134.8);
  --brand-950: oklch(0.24 0.119 134.8);
}

Colors that work with #6bc903

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#D7EDC0
Hairlines and dividers
Muted text#759B4B
Captions on the surface
Accent#2E00CC
Second voice, not a rival
Dark variant#437E02
Hover, pressed, headers
Light variant#F3FFE6
Selected rows, tints
Dark surface#1C2414
Dark-mode background
Hover#58A602
One step down in lightness
Pressed#468302
Two steps down
Disabled#9FB389
Chroma pulled out
Focus ring#76E000
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 #6bc903

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
  • Headers, footers and dark-mode surfaces
  • 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
  • Black 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 #437E02
Safe as a 1px border on white
No — use #58A602

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 low lightness adds weight and formality.

Worth knowing

Red/green pairs are the most common colour-blindness failure — never let the two carry meaning alone.

Reads as
  • FormalityHigh
  • EnergyHigh
  • Weight60/100
  • TemperatureNeutral
  • 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#6103C9
Analogous left#C9C403
Analogous right#08C903
Split-complement 1#0308C9
Split-complement 2#C403C9
Triadic 1#036BC9
Triadic 2#C9036B
Tetradic#03C9C4
On the wheel
Base+30°−30°+120°+240°+180°89°

#6bc903 sits at 89°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red42.0%
Green78.8%
Blue1.2%
R · 0–255
107
0x6b
G · 0–255
201
0xc9
B · 0–255
3
0x03

CMYK percentages

Cyan46.8%
Magenta0.0%
Yellow98.5%
Key (black)21.2%

Total ink coverage is 167%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#6bc903 text on a black background

contrast 9.98:1

Card sample

#6bc903 text on a white background

contrast 2.10:1

Card sample

#6bc903 on grey

1.92:1

#6bc903 on its own surface

2.00:1

#6bc903 on its dark surface

7.61:1

CSS3 live lab

Text font color

The quick brown fox

color: #6bc903;
Background color
Panel with #6bc903 background
background-color: #6bc903;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #6bc903;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(107, 201, 3, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(107, 201, 3, 0.45);
Border & gradient
Gradient panel
border: 3px solid #6bc903;
background: linear-gradient(135deg, #6bc903, #03C91F);
Gradient text

Gradient headline

background: linear-gradient(90deg, #6bc903, #03C951);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #6bc903;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #6bc903;
caret-color: #6bc903;
Left rule
Pull quote or callout
border-left: 4px solid #6bc903;
Ring + tint
Selected chip
background: #F3FFE6;
box-shadow: inset 0 0 0 2px #6bc903;
Conic badge
68%
background: conic-gradient(#6bc903 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #6bc903 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(107, 201, 3, 0.5)
rgb(107 201 3 / 50%)
#6bc90380
hsl(89 97% 40% / 50%)
color-mix(in srgb, #6bc903 50%, transparent)
Alpha8-digit hexFlat on white
10%#6bc9031a#F0FAE6
20%#6bc90333#E1F4CD
40%#6bc90366#C4E99A
60%#6bc90399#A6DF68
80%#6bc903cc#89D435

Gradients from #6bc903

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, #8BFB0E, #6bc903 45%, #437E02);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #6bc903, #03AB28);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #6bc903, #6103C9);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #99FC2C 0%, #6bc903 45%, #437E02 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%, #FBE004 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #03E711 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #437E02 0%, transparent 65%), #6bc903;

Monochromatic scale

Palettes built from #6bc903

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.

#6bc903 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 9.98:1.

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.

#6bc903, answered

What color is #6bc903?

#6bc903 is a dark electric green, closest to Yellow Green (ΔE2000 5.9). It sits at 89° on the hue wheel with 97% saturation and 40% lightness, which reads as neutral.

What is the RGB value of #6bc903?

rgb(107, 201, 3) — 107 red, 201 green and 3 blue out of 255, or 42% / 78.8% / 1.2% by channel.

What is #6bc903 in HSL and HSV?

hsl(89, 97%, 40%) and hsv(88, 99%, 79%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #6bc903 a light or a dark color?

It is a mid-tone. Relative luminance is 0.4491 and perceived brightness is 65%, so black text on it reaches 9.98:1.

Should I use black or white text on #6bc903?

Black. It scores 9.98:1 against #6bc903, versus 2.10:1 for white — AAA at any size.

Is #6bc903 accessible on a white background?

#6bc903 on white scores 2.10:1, which fails WCAG AA at every size. Darken it to #468302 to reach 4.5:1, or #335F01 for 7:1.

What is the complementary color of #6bc903?

#6103C9 sits directly opposite on the wheel. Softer options are the split-complements #0308C9 and #C403C9, which give the same contrast with far less vibration.

What colors go well with #6bc903?

For interface work: #F8FAF4 as the surface, #D7EDC0 for borders, #759B4B for secondary text, #2E00CC as an accent and #437E02 for hover and pressed states. For a palette, the analogous pair #C9C403 and #08C903 stays calm, while #6103C9 is the loudest partner.

What is #6bc903 in CMYK for printing?

cmyk(47%, 0%, 99%, 21%). 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 #6bc903 warm or cool?

Neutral — it scores 49 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #B4C903; nudged cooler, #21CB01.

Which Tailwind color is closest to #6bc903?

The lime family — its 500 step is #84cc16, ΔE2000 3 away. That is close enough to swap in without anyone noticing.

How do I use #6bc903 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#6bc903] or text-[#6bc903], 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 #6bc903 with 50% opacity?

rgba(107, 201, 3, 0.5), or #6bc90380 in eight-digit hex. Over white that composites to #B5E481; over black, #366502.

Is #6bc903 a web-safe color?

No. The nearest web-safe colour is #66CC00, ΔE2000 0.9 away. The palette only matters for legacy displays and some email clients now.

What does the color #6bc903 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 #6bc903?

The safest is same-hue elevation: linear-gradient(135deg, #8BFB0E, #6bc903 45%, #437E02). For more colour, a short hue run to #03AB28 keeps it rich without turning muddy.

Work with #6bc903 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #6bc903 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.