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green · cool

#398e48

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

Token name suggestion: Dusk Jade

RGB
57, 142, 72
HSL
131°, 43%, 39%
CMYK
60, 0, 49, 44
Luminance
0.2068

#398e48 is a dark soft green, 131° on the wheel and 67/100 on the cool side. Put black text on it (5.14:1). As text it scores 4.09:1 on white — large text only. Nearest name is Sea Green, nearest Tailwind family is emerald.

hsl(131 43% 39%)rgb(57 142 72)Base step 700AA inkCool

At a glance

Every number on this page in one read: what #398e48 is made of, how bright it looks, and which way it leans.

Hex
#398e48
Hue
131°
green
Saturation
43%
soft
Lightness
39%
dark
Brightness
56%
HSV value
Perceived
45%
weighted brightness
Luminance
0.2068
WCAG relative
Temperature
Cool
67/100 cool
Color family
Green
Tone
Soft
Best ink
Black
5.14:1
Closest name
Sea Green
ΔE2000 4.4
Chroma
50.8
LCH, 0–130ish
OKLCH L
0.577
perceptual lightness
Tailwind
emerald
500 · ΔE 14.7
Web-safe
#339933
nearest of 216
Where it sits
Hue131° of 360°
Saturation43%
Lightness39%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #398e48.

Temperature
Warm ← → Cool67% 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%
Green94%
Blue2%

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

Every format

HEX#398e48
HEX (8-digit)#398e48ff
RGBrgb(57, 142, 72)
RGBArgba(57, 142, 72, 1)
HSLhsl(131, 43%, 39%)
HSV / HSBhsv(131, 60%, 56%)
HWBhwb(131 22% 44%)
CMYKcmyk(60%, 0%, 49%, 44%)
LABlab(52.6 -41.2 29.7)
LCHlch(52.6 50.8 144.2)
OKLCHoklch(0.577 0.133 147.1)
XYZ (D65)xyz(12.53, 20.68, 9.46)
Decimal3771976
Display P3color(display-p3 0.224 0.557 0.282)
Web-safe#339933

Copy-ready code

every platformclick to select
/* CSS */
color: #398e48;
background-color: #398e48;
/* CSS custom property */
--brand: #398e48;
/* Tailwind (arbitrary) */
class="text-[#398e48] bg-[#398e48]"
/* SCSS */
$brand: #398e48;
/* SwiftUI */
Color(red: 0.224, green: 0.557, blue: 0.282)
/* UIKit */
UIColor(red: 0.224, green: 0.557, blue: 0.282, alpha: 1)
/* Android XML */
<color name="brand">#398E48</color>
/* Android Compose */
Color(0xFF398E48)
/* Flutter */
Color(0xFF398E48)
/* Python / OpenCV (BGR) */
(72, 142, 57)
/* Python / PIL (RGB) */
(57, 142, 72)
/* Java AWT */
new Color(57, 142, 72)
/* .NET */
Color.FromArgb(255, 57, 142, 72)
/* OpenGL / Unity (0–1) */
(0.2235f, 0.5569f, 0.2824f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{57,142,72}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #398e48 85%, white);
border-color: color-mix(in oklab, #398e48 40%, transparent);
/* theme-aware in one line */
color: light-dark(#255B2E, #D3EDD8);
/* relative colour syntax */
--hover: hsl(from #398e48 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: #F5FAF6;
  --brand-100: #EBF5EC;
  --brand-200: #D1EAD6;
  --brand-300: #AFDFB7;
  --brand-400: #87CF94;
  --brand-500: #5FBF70;
  --brand-600: #46AF59;
  --brand-700: #398e48;
  --brand-800: #2F743B;
  --brand-900: #25552E;
  --brand-950: #17351D;
  --brand: #398e48;
  --brand-ink: #000000;
  --brand-surface: #F4FAF5;
  --brand-border: #C5E8CB;
  --brand-hover: #2F743B;
  --brand-pressed: #255B2E;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142417;
    --brand-ink: #D3EDD8;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5FAF6',
        100: '#EBF5EC',
        200: '#D1EAD6',
        300: '#AFDFB7',
        400: '#87CF94',
        500: '#5FBF70',
        600: '#46AF59',
        700: '#398e48',
        800: '#2F743B',
        900: '#25552E',
        950: '#17351D',
        DEFAULT: '#398e48',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5FAF6,
  '100': #EBF5EC,
  '200': #D1EAD6,
  '300': #AFDFB7,
  '400': #87CF94,
  '500': #5FBF70,
  '600': #46AF59,
  '700': #398e48,
  '800': #2F743B,
  '900': #25552E,
  '950': #17351D,
);
$brand-base: #398e48;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F5FAF6", "$type": "color" },
      "100": { "$value": "#EBF5EC", "$type": "color" },
      "200": { "$value": "#D1EAD6", "$type": "color" },
      "300": { "$value": "#AFDFB7", "$type": "color" },
      "400": { "$value": "#87CF94", "$type": "color" },
      "500": { "$value": "#5FBF70", "$type": "color" },
      "600": { "$value": "#46AF59", "$type": "color" },
      "700": { "$value": "#398e48", "$type": "color" },
      "800": { "$value": "#2F743B", "$type": "color" },
      "900": { "$value": "#25552E", "$type": "color" },
      "950": { "$value": "#17351D", "$type": "color" }
    },
    "brandInk": { "$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 #398e48 · 5.14:1
Use #000000AA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 4.09:1
AA fail · AA large pass · AAA fail
Aa
Black text · 5.14:1 · recommended
AA pass · AA large pass · AAA fail
Reading the other direction: #398e48 as text scores 4.09:1 on white and 5.14:1 on black.
Best tinted ink on it, if plain black or white feels flat: #255B2E at 1.96:1.

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
#358342 · 4.69:1
AA on white−3% L
#358342
The quick fox
#276232 · 7.29:1
AAA on white−12% L
#276232
The quick fox
#398e48 · 5.14:1
AA on blackalready passes
#398e48
The quick fox
#45AB57 · 7.22:1
AAA on black+8% L
#45AB57

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #398E48 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
#398e48 on white: 4.09:1
AA ✗ fail · AA-large · AAA
Aa
#398e48 on black: 5.14:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #398e48 as text on that neutral, and that neutral as text on #398e48.

NeutralRatioBoth directions
White4.09:1AaAa
Slate 503.91:1AaAa
Slate 1003.73:1AaAa
Slate 2003.32:1AaAa
Slate 3002.75:1AaAa
Slate 4001.59:1AaAa
Slate 5001.16:1AaAa
Slate 6001.85:1AaAa
Slate 7002.53:1AaAa
Slate 8003.58:1AaAa
Slate 9004.37:1AaAa
Black5.14:1AaAa
Colour vision deficiency
true color
protanopia · #908242
deuteranopia · #857B4D
tritanopia · #268B7E

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. #398e48 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.

#F5FAF6
#EBF5EC
#D1EAD6
#AFDFB7
#87CF94
#5FBF70
#46AF59
#398e48
#2F743B
#25552E
#17351D
Base = 700Lightest = 50 · #F5FAF6Darkest = 950 · #17351DText 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 0.033 147.1);
  --brand-100: oklch(0.94 0.053 147.1);
  --brand-200: oklch(0.88 0.080 147.1);
  --brand-300: oklch(0.80 0.104 147.1);
  --brand-400: oklch(0.72 0.122 147.1);
  --brand-500: oklch(0.64 0.133 147.1);
  --brand-600: oklch(0.56 0.133 147.1);
  --brand-700: oklch(0.48 0.125 147.1);
  --brand-800: oklch(0.40 0.112 147.1);
  --brand-900: oklch(0.32 0.093 147.1);
  --brand-950: oklch(0.24 0.073 147.1);
}

Colors that work with #398e48

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#F4FAF5
Tinted page background
Border#C5E8CB
Hairlines and dividers
Muted text#4B9B59
Captions on the surface
Accent#8B3592
Second voice, not a rival
Dark variant#255B2E
Hover, pressed, headers
Light variant#EDF8EF
Selected rows, tints
Dark surface#142417
Dark-mode background
Hover#2F743B
One step down in lightness
Pressed#255B2E
Two steps down
Disabled#86B18D
Chroma pulled out
Focus ring#34A748
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 #398e48

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 #255B2E
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
  • Weight61/100
  • 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#8E397F
Analogous left#548E39
Analogous right#398E72
Split-complement 1#72398E
Split-complement 2#8E3954
Triadic 1#48398E
Triadic 2#8E4839
Tetradic#39548E
On the wheel
Base+30°−30°+120°+240°+180°131°

#398e48 sits at 131°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red22.4%
Green55.7%
Blue28.2%
R · 0–255
57
0x39
G · 0–255
142
0x8e
B · 0–255
72
0x48

CMYK percentages

Cyan59.9%
Magenta0.0%
Yellow49.3%
Key (black)44.3%

Total ink coverage is 154%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#398e48 text on a black background

contrast 5.14:1

Card sample

#398e48 text on a white background

contrast 4.09:1

Card sample

#398e48 on grey

3.73:1

#398e48 on its own surface

3.86:1

#398e48 on its dark surface

3.97:1

CSS3 live lab

Text font color

The quick brown fox

color: #398e48;
Background color
Panel with #398e48 background
background-color: #398e48;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #398e48;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(57, 142, 72, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 142, 72, 0.45);
Border & gradient
Gradient panel
border: 3px solid #398e48;
background: linear-gradient(135deg, #398e48, #398E81);
Gradient text

Gradient headline

background: linear-gradient(90deg, #398e48, #39868E);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #398e48;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #398e48;
caret-color: #398e48;
Left rule
Pull quote or callout
border-left: 4px solid #398e48;
Ring + tint
Selected chip
background: #EDF8EF;
box-shadow: inset 0 0 0 2px #398e48;
Conic badge
68%
background: conic-gradient(#398e48 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #398e48 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(57, 142, 72, 0.5)
rgb(57 142 72 / 50%)
#398e4880
hsl(131 43% 39% / 50%)
color-mix(in srgb, #398e48 50%, transparent)
Alpha8-digit hexFlat on white
10%#398e481a#EBF4ED
20%#398e4833#D7E8DA
40%#398e4866#B0D2B6
60%#398e4899#88BB91
80%#398e48cc#61A56D

Gradients from #398e48

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, #4DB760, #398e48 45%, #255B2E);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #398e48, #307873);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #398e48, #8E397F);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #63C073 0%, #398e48 45%, #255B2E 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF5, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #73B248 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #42A48C 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #255B2E 0%, transparent 65%), #398e48;

Monochromatic scale

Palettes built from #398e48

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.

#398e48 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 5.14:1.

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.

#398e48, answered

What color is #398e48?

#398e48 is a dark soft green, closest to Sea Green (ΔE2000 4.4). It sits at 131° on the hue wheel with 43% saturation and 39% lightness, which reads as cool.

What is the RGB value of #398e48?

rgb(57, 142, 72) — 57 red, 142 green and 72 blue out of 255, or 22.4% / 55.7% / 28.2% by channel.

What is #398e48 in HSL and HSV?

hsl(131, 43%, 39%) and hsv(131, 60%, 56%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #398e48 a light or a dark color?

It is a mid-tone. Relative luminance is 0.2068 and perceived brightness is 45%, so black text on it reaches 5.14:1.

Should I use black or white text on #398e48?

Black. It scores 5.14:1 against #398e48, versus 4.09:1 for white — AA at any size.

Is #398e48 accessible on a white background?

#398e48 on white scores 4.09:1, which only clears AA for large text — 18.66px bold or 24px regular and up. Darken it to #358342 to reach 4.5:1, or #276232 for 7:1.

What is the complementary color of #398e48?

#8E397F sits directly opposite on the wheel. Softer options are the split-complements #72398E and #8E3954, which give the same contrast with far less vibration.

What colors go well with #398e48?

For interface work: #F4FAF5 as the surface, #C5E8CB for borders, #4B9B59 for secondary text, #8B3592 as an accent and #255B2E for hover and pressed states. For a palette, the analogous pair #548E39 and #398E72 stays calm, while #8E397F is the loudest partner.

What is #398e48 in CMYK for printing?

cmyk(60%, 0%, 49%, 44%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #398e48 warm or cool?

Cool — it scores 67 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #498E39; nudged cooler, #379067.

Which Tailwind color is closest to #398e48?

The emerald family — its 500 step is #10b981, ΔE2000 14.7 away. That is a visible difference, so define #398e48 as a custom token rather than reaching for the built-in.

How do I use #398e48 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#398e48] or text-[#398e48], 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 #398e48 with 50% opacity?

rgba(57, 142, 72, 0.5), or #398e4880 in eight-digit hex. Over white that composites to #9CC7A4; over black, #1D4724.

Is #398e48 a web-safe color?

No. The nearest web-safe colour is #339933, ΔE2000 5.8 away. The palette only matters for legacy displays and some email clients now.

What does the color #398e48 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 #398e48?

The safest is same-hue elevation: linear-gradient(135deg, #4DB760, #398e48 45%, #255B2E). For more colour, a short hue run to #307873 keeps it rich without turning muddy.

Work with #398e48 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #398e48 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.