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green · neutral

#3f6003

a deep, electric green · neutral · closest name: Dark Olive Green

Token name suggestion: Ink Fern

RGB
63, 96, 3
HSL
81°, 94%, 19%
CMYK
34, 0, 97, 62
Luminance
0.0943

#3f6003 is a deep electric green, 81° on the wheel and 43/100 on the cool side. Put white text on it (7.28:1). As text it scores 7.28:1 on white — safe at any size. Nearest name is Dark Olive Green, nearest Tailwind family is stone.

hsl(81 94% 19%)rgb(63 96 3)Base step 950AAA inkNeutral

At a glance

Every number on this page in one read: what #3f6003 is made of, how bright it looks, and which way it leans.

Hex
#3f6003
Hue
81°
green
Saturation
94%
electric
Lightness
19%
deep
Brightness
38%
HSV value
Perceived
32%
weighted brightness
Luminance
0.0943
WCAG relative
Temperature
Neutral
43/100 cool
Color family
Green
Tone
Electric
Best ink
White
7.28:1
Closest name
Dark Olive Green
ΔE2000 6.6
Chroma
49.5
LCH, 0–130ish
OKLCH L
0.447
perceptual lightness
Tailwind
stone
500 · ΔE 26.1
Web-safe
#336600
nearest of 216
Where it sits
Hue81° of 360°
Saturation94%
Lightness19%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #3f6003.

Temperature
Warm ← → Cool43% 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
Red11%
Green89%
Blue0%

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

Every format

HEX#3f6003
HEX (8-digit)#3f6003ff
RGBrgb(63, 96, 3)
RGBArgba(63, 96, 3, 1)
HSLhsl(81, 94%, 19%)
HSV / HSBhsv(81, 97%, 38%)
HWBhwb(81 1% 62%)
CMYKcmyk(34%, 0%, 97%, 62%)
LABlab(36.8 -25.8 42.3)
LCHlch(36.8 49.5 121.4)
OKLCHoklch(0.447 0.117 129.3)
XYZ (D65)xyz(6.25, 9.43, 1.58)
Decimal4153347
Display P3color(display-p3 0.247 0.376 0.012)
Web-safe#336600

Copy-ready code

every platformclick to select
/* CSS */
color: #3f6003;
background-color: #3f6003;
/* CSS custom property */
--brand: #3f6003;
/* Tailwind (arbitrary) */
class="text-[#3f6003] bg-[#3f6003]"
/* SCSS */
$brand: #3f6003;
/* SwiftUI */
Color(red: 0.247, green: 0.376, blue: 0.012)
/* UIKit */
UIColor(red: 0.247, green: 0.376, blue: 0.012, alpha: 1)
/* Android XML */
<color name="brand">#3F6003</color>
/* Android Compose */
Color(0xFF3F6003)
/* Flutter */
Color(0xFF3F6003)
/* Python / OpenCV (BGR) */
(3, 96, 63)
/* Python / PIL (RGB) */
(63, 96, 3)
/* Java AWT */
new Color(63, 96, 3)
/* .NET */
Color.FromArgb(255, 63, 96, 3)
/* OpenGL / Unity (0–1) */
(0.2471f, 0.3765f, 0.0118f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{63,96,3}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #3f6003 85%, white);
border-color: color-mix(in oklab, #3f6003 40%, transparent);
/* theme-aware in one line */
color: light-dark(#517C04, #E4EED3);
/* relative colour syntax */
--hover: hsl(from #3f6003 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: #F9FDF2;
  --brand-100: #F3FBE4;
  --brand-200: #E6FAC2;
  --brand-300: #D6FC92;
  --brand-400: #C2FA5C;
  --brand-500: #ADF825;
  --brand-600: #9CED07;
  --brand-700: #82C606;
  --brand-800: #689E05;
  --brand-900: #4D7208;
  --brand-950: #3f6003;
  --brand: #3f6003;
  --brand-ink: #ffffff;
  --brand-surface: #F8FAF4;
  --brand-border: #DDEDC0;
  --brand-hover: #283D02;
  --brand-pressed: #121B01;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #1E2414;
    --brand-ink: #E4EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F9FDF2',
        100: '#F3FBE4',
        200: '#E6FAC2',
        300: '#D6FC92',
        400: '#C2FA5C',
        500: '#ADF825',
        600: '#9CED07',
        700: '#82C606',
        800: '#689E05',
        900: '#4D7208',
        950: '#3f6003',
        DEFAULT: '#3f6003',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F9FDF2,
  '100': #F3FBE4,
  '200': #E6FAC2,
  '300': #D6FC92,
  '400': #C2FA5C,
  '500': #ADF825,
  '600': #9CED07,
  '700': #82C606,
  '800': #689E05,
  '900': #4D7208,
  '950': #3f6003,
);
$brand-base: #3f6003;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F9FDF2", "$type": "color" },
      "100": { "$value": "#F3FBE4", "$type": "color" },
      "200": { "$value": "#E6FAC2", "$type": "color" },
      "300": { "$value": "#D6FC92", "$type": "color" },
      "400": { "$value": "#C2FA5C", "$type": "color" },
      "500": { "$value": "#ADF825", "$type": "color" },
      "600": { "$value": "#9CED07", "$type": "color" },
      "700": { "$value": "#82C606", "$type": "color" },
      "800": { "$value": "#689E05", "$type": "color" },
      "900": { "$value": "#4D7208", "$type": "color" },
      "950": { "$value": "#3f6003", "$type": "color" }
    },
    "brandInk": { "$value": "#ffffff", "$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#ffffff on #3f6003 · 7.28:1
Use #ffffffAAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 7.28:1 · recommended
AA pass · AA large pass · AAA pass
Aa
Black text · 2.89:1
AA fail · AA large fail · AAA fail
Reading the other direction: #3f6003 as text scores 7.28:1 on white and 2.89:1 on black.
Best tinted ink on it, if plain black or white feels flat: #F6FEE6 at 7.01:1.

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
#3f6003 · 7.28:1
AA on whitealready passes
#3f6003
The quick fox
#3f6003 · 7.28:1
AAA on whitealready passes
#3f6003
The quick fox
#568304 · 4.64:1
AA on black+7% L
#568304
The quick fox
#6CA505 · 7.02:1
AAA on black+14% L
#6CA505

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #3F6003 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
#3f6003 on white: 7.28:1
AA ✓ pass · AA-large · AAA
Aa
#3f6003 on black: 2.89:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #3f6003 as text on that neutral, and that neutral as text on #3f6003.

NeutralRatioBoth directions
White7.28:1AaAa
Slate 506.96:1AaAa
Slate 1006.64:1AaAa
Slate 2005.90:1AaAa
Slate 3004.90:1AaAa
Slate 4002.84:1AaAa
Slate 5001.53:1AaAa
Slate 6001.04:1AaAa
Slate 7001.42:1AaAa
Slate 8002.01:1AaAa
Slate 9002.45:1AaAa
Black2.89:1AaAa
Colour vision deficiency
true color
protanopia · #655800
deuteranopia · #615610
tritanopia · #415B51

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. #3f6003 is pinned to step 950; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F9FDF2
#F3FBE4
#E6FAC2
#D6FC92
#C2FA5C
#ADF825
#9CED07
#82C606
#689E05
#4D7208
#3f6003
Base = 950Lightest = 50 · #F9FDF2Darkest = 950 · #3f6003Text 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 0.029 129.3);
  --brand-100: oklch(0.94 0.047 129.3);
  --brand-200: oklch(0.88 0.070 129.3);
  --brand-300: oklch(0.80 0.091 129.3);
  --brand-400: oklch(0.72 0.108 129.3);
  --brand-500: oklch(0.64 0.117 129.3);
  --brand-600: oklch(0.56 0.117 129.3);
  --brand-700: oklch(0.48 0.110 129.3);
  --brand-800: oklch(0.40 0.098 129.3);
  --brand-900: oklch(0.32 0.082 129.3);
  --brand-950: oklch(0.24 0.064 129.3);
}

Colors that work with #3f6003

Not a palette — a role sheet. Each swatch answers one question you will hit while building the component.

Text on it#ffffff
White wins here
Surface#F8FAF4
Tinted page background
Border#DDEDC0
Hairlines and dividers
Muted text#7E9B4B
Captions on the surface
Accent#0B0162
Second voice, not a rival
Dark variant#517C04
Hover, pressed, headers
Light variant#F6FEE6
Selected rows, tints
Dark surface#1E2414
Dark-mode background
Hover#283D02
One step down in lightness
Pressed#121B01
Two steps down
Disabled#708152
Chroma pulled out
Focus ring#4D7700
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 #3f6003

Derived from its contrast, chroma and lightness — not from taste.

Works well for
  • Body text and links on white
  • 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 on black or near-black surfaces
  • 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
Any size
Safe as a fill behind white type
Yes
Safe as a 1px border on white
Yes

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
  • Weight81/100
  • 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#240360
Analogous left#605203
Analogous right#106003
Split-complement 1#031060
Split-complement 2#520360
Triadic 1#033F60
Triadic 2#60033F
Tetradic#036052
On the wheel
Base+30°−30°+120°+240°+180°81°

#3f6003 sits at 81°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red24.7%
Green37.6%
Blue1.2%
R · 0–255
63
0x3f
G · 0–255
96
0x60
B · 0–255
3
0x03

CMYK percentages

Cyan34.4%
Magenta0.0%
Yellow96.9%
Key (black)62.4%

Total ink coverage is 194%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#3f6003 text on a black background

contrast 2.89:1

Card sample

#3f6003 text on a white background

contrast 7.28:1

Card sample

#3f6003 on grey

6.64:1

#3f6003 on its own surface

6.92:1

#3f6003 on its dark surface

2.19:1

CSS3 live lab

Text font color

The quick brown fox

color: #3f6003;
Background color
Panel with #3f6003 background
background-color: #3f6003;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #3f6003;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(63, 96, 3, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 96, 3, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f6003;
background: linear-gradient(135deg, #3f6003, #036005);
Gradient text

Gradient headline

background: linear-gradient(90deg, #3f6003, #03601C);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #3f6003;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #3f6003;
caret-color: #3f6003;
Left rule
Pull quote or callout
border-left: 4px solid #3f6003;
Ring + tint
Selected chip
background: #F6FEE6;
box-shadow: inset 0 0 0 2px #3f6003;
Conic badge
68%
background: conic-gradient(#3f6003 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #3f6003 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(63, 96, 3, 0.5)
rgb(63 96 3 / 50%)
#3f600380
hsl(81 94% 19% / 50%)
color-mix(in srgb, #3f6003 50%, transparent)
Alpha8-digit hexFlat on white
10%#3f60031a#ECEFE6
20%#3f600333#D9DFCD
40%#3f600366#B2BF9A
60%#3f600399#8CA068
80%#3f6003cc#658035

Gradients from #3f6003

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, #669B05, #3f6003 45%, #517C04);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #3f6003, #024209);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #3f6003, #240360);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #79B906 0%, #3f6003 45%, #517C04 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%, #917105 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #0B7E04 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #517C04 0%, transparent 65%), #3f6003;

Monochromatic scale

Palettes built from #3f6003

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.

#3f6003 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

Too dim on dark surfaces at 2.89:1 — lift it to #568304 for body text, or reserve it for fills.

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.

#3f6003, answered

What color is #3f6003?

#3f6003 is a deep electric green, closest to Dark Olive Green (ΔE2000 6.6). It sits at 81° on the hue wheel with 94% saturation and 19% lightness, which reads as neutral.

What is the RGB value of #3f6003?

rgb(63, 96, 3) — 63 red, 96 green and 3 blue out of 255, or 24.7% / 37.6% / 1.2% by channel.

What is #3f6003 in HSL and HSV?

hsl(81, 94%, 19%) and hsv(81, 97%, 38%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #3f6003 a light or a dark color?

It is a dark color. Relative luminance is 0.0943 and perceived brightness is 32%, so white text on it reaches 7.28:1.

Should I use black or white text on #3f6003?

White. It scores 7.28:1 against #3f6003, versus 2.89:1 for black — AAA at any size.

Is #3f6003 accessible on a white background?

#3f6003 on white scores 7.28:1, which clears AAA at every size.

What is the complementary color of #3f6003?

#240360 sits directly opposite on the wheel. Softer options are the split-complements #031060 and #520360, which give the same contrast with far less vibration.

What colors go well with #3f6003?

For interface work: #F8FAF4 as the surface, #DDEDC0 for borders, #7E9B4B for secondary text, #0B0162 as an accent and #517C04 for hover and pressed states. For a palette, the analogous pair #605203 and #106003 stays calm, while #240360 is the loudest partner.

What is #3f6003 in CMYK for printing?

cmyk(34%, 0%, 97%, 62%). 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 #3f6003 warm or cool?

Neutral — it scores 43 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #605F03; nudged cooler, #1C6102.

Which Tailwind color is closest to #3f6003?

The stone family — its 500 step is #78716c, ΔE2000 26.1 away. That is a visible difference, so define #3f6003 as a custom token rather than reaching for the built-in.

How do I use #3f6003 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#3f6003] or text-[#3f6003], 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 #3f6003 with 50% opacity?

rgba(63, 96, 3, 0.5), or #3f600380 in eight-digit hex. Over white that composites to #9FB081; over black, #203002.

Is #3f6003 a web-safe color?

No. The nearest web-safe colour is #336600, ΔE2000 3.4 away. The palette only matters for legacy displays and some email clients now.

What does the color #3f6003 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 #3f6003?

The safest is same-hue elevation: linear-gradient(135deg, #669B05, #3f6003 45%, #517C04). For more colour, a short hue run to #024209 keeps it rich without turning muddy.

Work with #3f6003 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #3f6003 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.