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green · cool

#034229

a deep, electric green · cool · closest name: Dark Slate Gray

Token name suggestion: Abyss Jade

RGB
3, 66, 41
HSL
156°, 91%, 14%
CMYK
96, 0, 38, 74
Luminance
0.0408

#034229 is a deep electric green, 156° on the wheel and 78/100 on the cool side. Put white text on it (11.57:1). As text it scores 11.57:1 on white — safe at any size. Nearest name is Dark Slate Gray, nearest Tailwind family is neutral.

hsl(156 91% 14%)rgb(3 66 41)Base step 950AAA inkCool

At a glance

Every number on this page in one read: what #034229 is made of, how bright it looks, and which way it leans.

Hex
#034229
Hue
156°
green
Saturation
91%
electric
Lightness
14%
deep
Brightness
26%
HSV value
Perceived
21%
weighted brightness
Luminance
0.0408
WCAG relative
Temperature
Cool
78/100 cool
Color family
Green
Tone
Electric
Best ink
White
11.57:1
Closest name
Dark Slate Gray
ΔE2000 13.8
Chroma
27.6
LCH, 0–130ish
OKLCH L
0.335
perceptual lightness
Tailwind
neutral
500 · ΔE 29
Web-safe
#003333
nearest of 216
Where it sits
Hue156° of 360°
Saturation91%
Lightness14%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #034229.

Temperature
Warm ← → Cool78% 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
Red0%
Green96%
Blue4%

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

Every format

HEX#034229
HEX (8-digit)#034229ff
RGBrgb(3, 66, 41)
RGBArgba(3, 66, 41, 1)
HSLhsl(156, 91%, 14%)
HSV / HSBhsv(156, 95%, 26%)
HWBhwb(156 1% 74%)
CMYKcmyk(96%, 0%, 38%, 74%)
LABlab(23.9 -25.7 10.1)
LCHlch(23.9 27.6 158.5)
OKLCHoklch(0.335 0.074 159.9)
XYZ (D65)xyz(2.39, 4.08, 2.76)
Decimal213545
Display P3color(display-p3 0.012 0.259 0.161)
Web-safe#003333

Copy-ready code

every platformclick to select
/* CSS */
color: #034229;
background-color: #034229;
/* CSS custom property */
--brand: #034229;
/* Tailwind (arbitrary) */
class="text-[#034229] bg-[#034229]"
/* SCSS */
$brand: #034229;
/* SwiftUI */
Color(red: 0.012, green: 0.259, blue: 0.161)
/* UIKit */
UIColor(red: 0.012, green: 0.259, blue: 0.161, alpha: 1)
/* Android XML */
<color name="brand">#034229</color>
/* Android Compose */
Color(0xFF034229)
/* Flutter */
Color(0xFF034229)
/* Python / OpenCV (BGR) */
(41, 66, 3)
/* Python / PIL (RGB) */
(3, 66, 41)
/* Java AWT */
new Color(3, 66, 41)
/* .NET */
Color.FromArgb(255, 3, 66, 41)
/* OpenGL / Unity (0–1) */
(0.0118f, 0.2588f, 0.1608f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{3,66,41}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #034229 85%, white);
border-color: color-mix(in oklab, #034229 40%, transparent);
/* theme-aware in one line */
color: light-dark(#067A4C, #D3EEE3);
/* relative colour syntax */
--hover: hsl(from #034229 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: #F2FDF9;
  --brand-100: #E4FBF2;
  --brand-200: #C3F9E3;
  --brand-300: #94FAD1;
  --brand-400: #5EF8BB;
  --brand-500: #28F5A4;
  --brand-600: #0BEA91;
  --brand-700: #09C379;
  --brand-800: #079C61;
  --brand-900: #0A7148;
  --brand-950: #034229;
  --brand: #034229;
  --brand-ink: #ffffff;
  --brand-surface: #F4FAF8;
  --brand-border: #C0EDDB;
  --brand-hover: #012014;
  --brand-pressed: #000000;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #14241E;
    --brand-ink: #D3EEE3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F2FDF9',
        100: '#E4FBF2',
        200: '#C3F9E3',
        300: '#94FAD1',
        400: '#5EF8BB',
        500: '#28F5A4',
        600: '#0BEA91',
        700: '#09C379',
        800: '#079C61',
        900: '#0A7148',
        950: '#034229',
        DEFAULT: '#034229',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2FDF9,
  '100': #E4FBF2,
  '200': #C3F9E3,
  '300': #94FAD1,
  '400': #5EF8BB,
  '500': #28F5A4,
  '600': #0BEA91,
  '700': #09C379,
  '800': #079C61,
  '900': #0A7148,
  '950': #034229,
);
$brand-base: #034229;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F2FDF9", "$type": "color" },
      "100": { "$value": "#E4FBF2", "$type": "color" },
      "200": { "$value": "#C3F9E3", "$type": "color" },
      "300": { "$value": "#94FAD1", "$type": "color" },
      "400": { "$value": "#5EF8BB", "$type": "color" },
      "500": { "$value": "#28F5A4", "$type": "color" },
      "600": { "$value": "#0BEA91", "$type": "color" },
      "700": { "$value": "#09C379", "$type": "color" },
      "800": { "$value": "#079C61", "$type": "color" },
      "900": { "$value": "#0A7148", "$type": "color" },
      "950": { "$value": "#034229", "$type": "color" }
    },
    "brandInk": { "$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 #034229 · 11.57:1
Use #ffffffAAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 11.57:1 · recommended
AA pass · AA large pass · AAA pass
Aa
Black text · 1.82:1
AA fail · AA large fail · AAA fail
Reading the other direction: #034229 as text scores 11.57:1 on white and 1.82:1 on black.
Best tinted ink on it, if plain black or white feels flat: #E7FEF5 at 10.96:1.

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
#034229 · 11.57:1
AA on whitealready passes
#034229
The quick fox
#034229 · 11.57:1
AAA on whitealready passes
#034229
The quick fox
#068653 · 4.54:1
AA on black+14% L
#068653
The quick fox
#08AD6C · 7.20:1
AAA on black+22% L
#08AD6C

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #034229 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
#034229 on white: 11.57:1
AA ✓ pass · AA-large · AAA
Aa
#034229 on black: 1.82:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #034229 as text on that neutral, and that neutral as text on #034229.

NeutralRatioBoth directions
White11.57:1AaAa
Slate 5011.06:1AaAa
Slate 10010.56:1AaAa
Slate 2009.38:1AaAa
Slate 3007.79:1AaAa
Slate 4004.51:1AaAa
Slate 5002.43:1AaAa
Slate 6001.53:1AaAa
Slate 7001.12:1AaAa
Slate 8001.26:1AaAa
Slate 9001.54:1AaAa
Black1.82:1AaAa
Colour vision deficiency
true color
protanopia · #413C27
deuteranopia · #3A372B
tritanopia · #00423B

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. #034229 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.

#F2FDF9
#E4FBF2
#C3F9E3
#94FAD1
#5EF8BB
#28F5A4
#0BEA91
#09C379
#079C61
#0A7148
#034229
Base = 950Lightest = 50 · #F2FDF9Darkest = 950 · #034229Text 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 0.019 159.9);
  --brand-100: oklch(0.94 0.030 159.9);
  --brand-200: oklch(0.88 0.044 159.9);
  --brand-300: oklch(0.80 0.058 159.9);
  --brand-400: oklch(0.72 0.068 159.9);
  --brand-500: oklch(0.64 0.074 159.9);
  --brand-600: oklch(0.56 0.074 159.9);
  --brand-700: oklch(0.48 0.070 159.9);
  --brand-800: oklch(0.40 0.062 159.9);
  --brand-900: oklch(0.32 0.052 159.9);
  --brand-950: oklch(0.24 0.041 159.9);
}

Colors that work with #034229

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#F4FAF8
Tinted page background
Border#C0EDDB
Hairlines and dividers
Muted text#4B9B7B
Captions on the surface
Accent#43022C
Second voice, not a rival
Dark variant#067A4C
Hover, pressed, headers
Light variant#E7FEF5
Selected rows, tints
Dark surface#14241E
Dark-mode background
Hover#012014
One step down in lightness
Pressed#000000
Two steps down
Disabled#476E5F
Chroma pulled out
Focus ring#005936
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 #034229

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
  • Weight87/100
  • 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#42031C
Analogous left#034209
Analogous right#033B42
Split-complement 1#42033B
Split-complement 2#420903
Triadic 1#290342
Triadic 2#422903
Tetradic#090342
On the wheel
Base+30°−30°+120°+240°+180°156°

#034229 sits at 156°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red1.2%
Green25.9%
Blue16.1%
R · 0–255
3
0x03
G · 0–255
66
0x42
B · 0–255
41
0x29

CMYK percentages

Cyan95.5%
Magenta0.0%
Yellow37.9%
Key (black)74.1%

Total ink coverage is 208%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#034229 text on a black background

contrast 1.82:1

Card sample

#034229 text on a white background

contrast 11.57:1

Card sample

#034229 on grey

10.56:1

#034229 on its own surface

10.95:1

#034229 on its dark surface

1.40:1

CSS3 live lab

Text font color

The quick brown fox

color: #034229;
Background color
Panel with #034229 background
background-color: #034229;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #034229;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(3, 66, 41, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(3, 66, 41, 0.45);
Border & gradient
Gradient panel
border: 3px solid #034229;
background: linear-gradient(135deg, #034229, #033142);
Gradient text

Gradient headline

background: linear-gradient(90deg, #034229, #032142);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #034229;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #034229;
caret-color: #034229;
Left rule
Pull quote or callout
border-left: 4px solid #034229;
Ring + tint
Selected chip
background: #E7FEF5;
box-shadow: inset 0 0 0 2px #034229;
Conic badge
68%
background: conic-gradient(#034229 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #034229 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(3, 66, 41, 0.5)
rgb(3 66 41 / 50%)
#03422980
hsl(156 91% 14% / 50%)
color-mix(in srgb, #034229 50%, transparent)
Alpha8-digit hexFlat on white
10%#0342291a#E6ECEA
20%#03422933#CDD9D4
40%#03422966#9AB3A9
60%#03422999#688E7F
80%#034229cc#356854

Gradients from #034229

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, #067C4D, #034229 45%, #067A4C);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #034229, #021825);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #034229, #42031C);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #079A5F 0%, #034229 45%, #067A4C 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF8, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #057307 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #044E5F 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #067A4C 0%, transparent 65%), #034229;

Monochromatic scale

Palettes built from #034229

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.

#034229 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

Very dark values collapse into each other on cheap panels — leave more lightness between your darkest steps than the numbers suggest.

In dark mode

Too dim on dark surfaces at 1.82:1 — lift it to #068653 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.

#034229, answered

What color is #034229?

#034229 is a deep electric green, closest to Dark Slate Gray (ΔE2000 13.8). It sits at 156° on the hue wheel with 91% saturation and 14% lightness, which reads as cool.

What is the RGB value of #034229?

rgb(3, 66, 41) — 3 red, 66 green and 41 blue out of 255, or 1.2% / 25.9% / 16.1% by channel.

What is #034229 in HSL and HSV?

hsl(156, 91%, 14%) and hsv(156, 95%, 26%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #034229 a light or a dark color?

It is a dark color. Relative luminance is 0.0408 and perceived brightness is 21%, so white text on it reaches 11.57:1.

Should I use black or white text on #034229?

White. It scores 11.57:1 against #034229, versus 1.82:1 for black — AAA at any size.

Is #034229 accessible on a white background?

#034229 on white scores 11.57:1, which clears AAA at every size.

What is the complementary color of #034229?

#42031C sits directly opposite on the wheel. Softer options are the split-complements #42033B and #420903, which give the same contrast with far less vibration.

What colors go well with #034229?

For interface work: #F4FAF8 as the surface, #C0EDDB for borders, #4B9B7B for secondary text, #43022C as an accent and #067A4C for hover and pressed states. For a palette, the analogous pair #034209 and #033B42 stays calm, while #42031C is the loudest partner.

What is #034229 in CMYK for printing?

cmyk(96%, 0%, 38%, 74%). 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 #034229 warm or cool?

Cool — it scores 78 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #034212; nudged cooler, #024341.

Which Tailwind color is closest to #034229?

The neutral family — its 500 step is #737373, ΔE2000 29 away. That is a visible difference, so define #034229 as a custom token rather than reaching for the built-in.

How do I use #034229 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#034229] or text-[#034229], 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 #034229 with 50% opacity?

rgba(3, 66, 41, 0.5), or #03422980 in eight-digit hex. Over white that composites to #81A194; over black, #022115.

Is #034229 a web-safe color?

No. The nearest web-safe colour is #003333, ΔE2000 12.2 away. The palette only matters for legacy displays and some email clients now.

What does the color #034229 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 #034229?

The safest is same-hue elevation: linear-gradient(135deg, #067C4D, #034229 45%, #067A4C). For more colour, a short hue run to #021825 keeps it rich without turning muddy.

Work with #034229 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #034229 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.