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green · cool

#3f9876

a dark, soft green · cool · closest name: Sea Green

Token name suggestion: Forest Fern

RGB
63, 152, 118
HSL
157°, 41%, 42%
CMYK
59, 0, 22, 40
Luminance
0.2482

#3f9876 is a dark soft green, 157° on the wheel and 78/100 on the cool side. Put black text on it (5.96:1). As text it scores 3.52:1 on white — large text only. Nearest name is Sea Green, nearest Tailwind family is emerald.

hsl(157 41% 42%)rgb(63 152 118)Base step 700AA inkCool

At a glance

Every number on this page in one read: what #3f9876 is made of, how bright it looks, and which way it leans.

Hex
#3f9876
Hue
157°
green
Saturation
41%
soft
Lightness
42%
dark
Brightness
60%
HSV value
Perceived
50%
weighted brightness
Luminance
0.2482
WCAG relative
Temperature
Cool
78/100 cool
Color family
Green
Tone
Soft
Best ink
Black
5.96:1
Closest name
Sea Green
ΔE2000 7.3
Chroma
36.5
LCH, 0–130ish
OKLCH L
0.616
perceptual lightness
Tailwind
emerald
500 · ΔE 10.5
Web-safe
#339966
nearest of 216
Where it sits
Hue157° of 360°
Saturation41%
Lightness42%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #3f9876.

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
Red4%
Green90%
Blue5%

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

Every format

HEX#3f9876
HEX (8-digit)#3f9876ff
RGBrgb(63, 152, 118)
RGBArgba(63, 152, 118, 1)
HSLhsl(157, 41%, 42%)
HSV / HSBhsv(157, 59%, 60%)
HWBhwb(157 25% 40%)
CMYKcmyk(59%, 0%, 22%, 40%)
LABlab(56.9 -35.0 10.0)
LCHlch(56.9 36.5 164.0)
OKLCHoklch(0.616 0.101 165.2)
XYZ (D65)xyz(16.55, 24.82, 21.05)
Decimal4167798
Display P3color(display-p3 0.247 0.596 0.463)
Web-safe#339966

Copy-ready code

every platformclick to select
/* CSS */
color: #3f9876;
background-color: #3f9876;
/* CSS custom property */
--brand: #3f9876;
/* Tailwind (arbitrary) */
class="text-[#3f9876] bg-[#3f9876]"
/* SCSS */
$brand: #3f9876;
/* SwiftUI */
Color(red: 0.247, green: 0.596, blue: 0.463)
/* UIKit */
UIColor(red: 0.247, green: 0.596, blue: 0.463, alpha: 1)
/* Android XML */
<color name="brand">#3F9876</color>
/* Android Compose */
Color(0xFF3F9876)
/* Flutter */
Color(0xFF3F9876)
/* Python / OpenCV (BGR) */
(118, 152, 63)
/* Python / PIL (RGB) */
(63, 152, 118)
/* Java AWT */
new Color(63, 152, 118)
/* .NET */
Color.FromArgb(255, 63, 152, 118)
/* OpenGL / Unity (0–1) */
(0.2471f, 0.5961f, 0.4627f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{63,152,118}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #3f9876 85%, white);
border-color: color-mix(in oklab, #3f9876 40%, transparent);
/* theme-aware in one line */
color: light-dark(#255A46, #D4EDE3);
/* relative colour syntax */
--hover: hsl(from #3f9876 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: #F5FAF8;
  --brand-100: #EBF5F1;
  --brand-200: #D2EAE1;
  --brand-300: #B0DECC;
  --brand-400: #88CEB3;
  --brand-500: #60BD9A;
  --brand-600: #48AD86;
  --brand-700: #3f9876;
  --brand-800: #30735A;
  --brand-900: #265543;
  --brand-950: #18352A;
  --brand: #3f9876;
  --brand-ink: #000000;
  --brand-surface: #F4FAF8;
  --brand-border: #C5E7DA;
  --brand-hover: #357F63;
  --brand-pressed: #2A664F;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #14241E;
    --brand-ink: #D4EDE3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5FAF8',
        100: '#EBF5F1',
        200: '#D2EAE1',
        300: '#B0DECC',
        400: '#88CEB3',
        500: '#60BD9A',
        600: '#48AD86',
        700: '#3f9876',
        800: '#30735A',
        900: '#265543',
        950: '#18352A',
        DEFAULT: '#3f9876',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5FAF8,
  '100': #EBF5F1,
  '200': #D2EAE1,
  '300': #B0DECC,
  '400': #88CEB3,
  '500': #60BD9A,
  '600': #48AD86,
  '700': #3f9876,
  '800': #30735A,
  '900': #265543,
  '950': #18352A,
);
$brand-base: #3f9876;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F5FAF8", "$type": "color" },
      "100": { "$value": "#EBF5F1", "$type": "color" },
      "200": { "$value": "#D2EAE1", "$type": "color" },
      "300": { "$value": "#B0DECC", "$type": "color" },
      "400": { "$value": "#88CEB3", "$type": "color" },
      "500": { "$value": "#60BD9A", "$type": "color" },
      "600": { "$value": "#48AD86", "$type": "color" },
      "700": { "$value": "#3f9876", "$type": "color" },
      "800": { "$value": "#30735A", "$type": "color" },
      "900": { "$value": "#265543", "$type": "color" },
      "950": { "$value": "#18352A", "$type": "color" }
    },
    "brandInk": { "$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 #3f9876 · 5.96:1
Use #000000AA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 3.52:1
AA fail · AA large pass · AAA fail
Aa
Black text · 5.96:1 · recommended
AA pass · AA large pass · AAA fail
Reading the other direction: #3f9876 as text scores 3.52:1 on white and 5.96:1 on black.
Best tinted ink on it, if plain black or white feels flat: #255A46 at 2.27:1.

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
#368365 · 4.57:1
AA on white−6% L
#368365
The quick fox
#29624C · 7.13:1
AAA on white−15% L
#29624C
The quick fox
#3f9876 · 5.96:1
AA on blackalready passes
#3f9876
The quick fox
#45A781 · 7.10:1
AAA on black+4% L
#45A781

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #3F9876 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
#3f9876 on white: 3.52:1
AA ✗ fail · AA-large · AAA
Aa
#3f9876 on black: 5.96:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #3f9876 as text on that neutral, and that neutral as text on #3f9876.

NeutralRatioBoth directions
White3.52:1AaAa
Slate 503.37:1AaAa
Slate 1003.21:1AaAa
Slate 2002.86:1AaAa
Slate 3002.37:1AaAa
Slate 4001.37:1AaAa
Slate 5001.35:1AaAa
Slate 6002.15:1AaAa
Slate 7002.94:1AaAa
Slate 8004.15:1AaAa
Slate 9005.07:1AaAa
Black5.96:1AaAa
Colour vision deficiency
true color
protanopia · #958E74
deuteranopia · #888578
tritanopia · #12988E

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. #3f9876 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.

#F5FAF8
#EBF5F1
#D2EAE1
#B0DECC
#88CEB3
#60BD9A
#48AD86
#3f9876
#30735A
#265543
#18352A
Base = 700Lightest = 50 · #F5FAF8Darkest = 950 · #18352AText step on white = 800
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 0.025 165.2);
  --brand-100: oklch(0.94 0.040 165.2);
  --brand-200: oklch(0.88 0.060 165.2);
  --brand-300: oklch(0.80 0.078 165.2);
  --brand-400: oklch(0.72 0.092 165.2);
  --brand-500: oklch(0.64 0.101 165.2);
  --brand-600: oklch(0.56 0.101 165.2);
  --brand-700: oklch(0.48 0.094 165.2);
  --brand-800: oklch(0.40 0.084 165.2);
  --brand-900: oklch(0.32 0.070 165.2);
  --brand-950: oklch(0.24 0.055 165.2);
}

Colors that work with #3f9876

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#F4FAF8
Tinted page background
Border#C5E7DA
Hairlines and dividers
Muted text#4B9B7C
Captions on the surface
Accent#9C3B78
Second voice, not a rival
Dark variant#255A46
Hover, pressed, headers
Light variant#EDF8F3
Selected rows, tints
Dark surface#14241E
Dark-mode background
Hover#357F63
One step down in lightness
Pressed#2A664F
Two steps down
Disabled#90B8A8
Chroma pulled out
Focus ring#39B284
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 #3f9876

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

Works well for
  • Headings from 24px up on white
  • Text and icons on dark surfaces
  • Charts, tags and secondary surfaces
  • Headers, footers and dark-mode surfaces
  • Brand accents, badges and data highlights
Use with care
  • Small text on white — under 4.5:1
  • 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
24px / 18.66px bold
Safe as a fill behind white type
No — use #255A46
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.

The muted chroma softens the association — it reads considered rather than loud, which suits long-form and data-heavy screens. 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
  • EnergyMedium
  • Weight58/100
  • 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#983F61
Analogous left#3F984A
Analogous right#3F8E98
Split-complement 1#983F8E
Split-complement 2#984A3F
Triadic 1#763F98
Triadic 2#98763F
Tetradic#4A3F98
On the wheel
Base+30°−30°+120°+240°+180°157°

#3f9876 sits at 157°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red24.7%
Green59.6%
Blue46.3%
R · 0–255
63
0x3f
G · 0–255
152
0x98
B · 0–255
118
0x76

CMYK percentages

Cyan58.6%
Magenta0.0%
Yellow22.4%
Key (black)40.4%

Total ink coverage is 121%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#3f9876 text on a black background

contrast 5.96:1

Card sample

#3f9876 text on a white background

contrast 3.52:1

Card sample

#3f9876 on grey

3.21:1

#3f9876 on its own surface

3.33:1

#3f9876 on its dark surface

4.58:1

CSS3 live lab

Text font color

The quick brown fox

color: #3f9876;
Background color
Panel with #3f9876 background
background-color: #3f9876;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #3f9876;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(63, 152, 118, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 152, 118, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f9876;
background: linear-gradient(135deg, #3f9876, #3F7F98);
Gradient text

Gradient headline

background: linear-gradient(90deg, #3f9876, #3F6898);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #3f9876;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #3f9876;
caret-color: #3f9876;
Left rule
Pull quote or callout
border-left: 4px solid #3f9876;
Ring + tint
Selected chip
background: #EDF8F3;
box-shadow: inset 0 0 0 2px #3f9876;
Conic badge
68%
background: conic-gradient(#3f9876 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #3f9876 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, 152, 118, 0.5)
rgb(63 152 118 / 50%)
#3f987680
hsl(157 41% 42% / 50%)
color-mix(in srgb, #3f9876 50%, transparent)
Alpha8-digit hexFlat on white
10%#3f98761a#ECF5F1
20%#3f987633#D9EAE4
40%#3f987666#B2D6C8
60%#3f987699#8CC1AD
80%#3f9876cc#65AD91

Gradients from #3f9876

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, #5ABB96, #3f9876 45%, #255A46);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #3f9876, #366683);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #3f9876, #983F61);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #6FC4A3 0%, #3f9876 45%, #255A46 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%, #53B856 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #4899AE 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #255A46 0%, transparent 65%), #3f9876;

Monochromatic scale

Palettes built from #3f9876

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.

#3f9876 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

Converts to four-color process without much drama. Proof it anyway.

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 5.96:1.

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.

#3f9876, answered

What color is #3f9876?

#3f9876 is a dark soft green, closest to Sea Green (ΔE2000 7.3). It sits at 157° on the hue wheel with 41% saturation and 42% lightness, which reads as cool.

What is the RGB value of #3f9876?

rgb(63, 152, 118) — 63 red, 152 green and 118 blue out of 255, or 24.7% / 59.6% / 46.3% by channel.

What is #3f9876 in HSL and HSV?

hsl(157, 41%, 42%) and hsv(157, 59%, 60%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #3f9876 a light or a dark color?

It is a mid-tone. Relative luminance is 0.2482 and perceived brightness is 50%, so black text on it reaches 5.96:1.

Should I use black or white text on #3f9876?

Black. It scores 5.96:1 against #3f9876, versus 3.52:1 for white — AA at any size.

Is #3f9876 accessible on a white background?

#3f9876 on white scores 3.52:1, which only clears AA for large text — 18.66px bold or 24px regular and up. Darken it to #368365 to reach 4.5:1, or #29624C for 7:1.

What is the complementary color of #3f9876?

#983F61 sits directly opposite on the wheel. Softer options are the split-complements #983F8E and #984A3F, which give the same contrast with far less vibration.

What colors go well with #3f9876?

For interface work: #F4FAF8 as the surface, #C5E7DA for borders, #4B9B7C for secondary text, #9C3B78 as an accent and #255A46 for hover and pressed states. For a palette, the analogous pair #3F984A and #3F8E98 stays calm, while #983F61 is the loudest partner.

What is #3f9876 in CMYK for printing?

cmyk(59%, 0%, 22%, 40%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #3f9876 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 #3F9855; nudged cooler, #3D9A99.

Which Tailwind color is closest to #3f9876?

The emerald family — its 500 step is #10b981, ΔE2000 10.5 away. That is a visible difference, so define #3f9876 as a custom token rather than reaching for the built-in.

How do I use #3f9876 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#3f9876] or text-[#3f9876], 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 #3f9876 with 50% opacity?

rgba(63, 152, 118, 0.5), or #3f987680 in eight-digit hex. Over white that composites to #9FCCBB; over black, #204C3B.

Is #3f9876 a web-safe color?

No. The nearest web-safe colour is #339966, ΔE2000 4.5 away. The palette only matters for legacy displays and some email clients now.

What does the color #3f9876 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 moderate chroma the association is present but not shouted.

What gradient works with #3f9876?

The safest is same-hue elevation: linear-gradient(135deg, #5ABB96, #3f9876 45%, #255A46). For more colour, a short hue run to #366683 keeps it rich without turning muddy.

Work with #3f9876 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #3f9876 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.