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green · cool

#377249

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

Token name suggestion: Shadow Jade

RGB
55, 114, 73
HSL
138°, 35%, 33%
CMYK
52, 0, 36, 55
Luminance
0.1333

#377249 is a dark soft green, 138° on the wheel and 70/100 on the cool side. Put white text on it (5.73:1). As text it scores 5.73:1 on white — safe at any size. Nearest name is Sea Green, nearest Tailwind family is neutral.

hsl(138 35% 33%)rgb(55 114 73)Base step 800AA inkCool

At a glance

Every number on this page in one read: what #377249 is made of, how bright it looks, and which way it leans.

Hex
#377249
Hue
138°
green
Saturation
35%
soft
Lightness
33%
dark
Brightness
45%
HSV value
Perceived
37%
weighted brightness
Luminance
0.1333
WCAG relative
Temperature
Cool
70/100 cool
Color family
Green
Tone
Soft
Best ink
White
5.73:1
Closest name
Sea Green
ΔE2000 9.1
Chroma
33.8
LCH, 0–130ish
OKLCH L
0.501
perceptual lightness
Tailwind
neutral
500 · ΔE 22.6
Web-safe
#336633
nearest of 216
Where it sits
Hue138° of 360°
Saturation35%
Lightness33%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #377249.

Temperature
Warm ← → Cool70% 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
Red6%
Green90%
Blue4%

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

Every format

HEX#377249
HEX (8-digit)#377249ff
RGBrgb(55, 114, 73)
RGBArgba(55, 114, 73, 1)
HSLhsl(138, 35%, 33%)
HSV / HSBhsv(138, 52%, 45%)
HWBhwb(138 22% 55%)
CMYKcmyk(52%, 0%, 36%, 55%)
LABlab(43.3 -29.3 17.0)
LCHlch(43.3 33.8 149.9)
OKLCHoklch(0.501 0.090 151.8)
XYZ (D65)xyz(8.79, 13.33, 8.41)
Decimal3633737
Display P3color(display-p3 0.216 0.447 0.286)
Web-safe#336633

Copy-ready code

every platformclick to select
/* CSS */
color: #377249;
background-color: #377249;
/* CSS custom property */
--brand: #377249;
/* Tailwind (arbitrary) */
class="text-[#377249] bg-[#377249]"
/* SCSS */
$brand: #377249;
/* SwiftUI */
Color(red: 0.216, green: 0.447, blue: 0.286)
/* UIKit */
UIColor(red: 0.216, green: 0.447, blue: 0.286, alpha: 1)
/* Android XML */
<color name="brand">#377249</color>
/* Android Compose */
Color(0xFF377249)
/* Flutter */
Color(0xFF377249)
/* Python / OpenCV (BGR) */
(73, 114, 55)
/* Python / PIL (RGB) */
(55, 114, 73)
/* Java AWT */
new Color(55, 114, 73)
/* .NET */
Color.FromArgb(255, 55, 114, 73)
/* OpenGL / Unity (0–1) */
(0.2157f, 0.4471f, 0.2863f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{55,114,73}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #377249 85%, white);
border-color: color-mix(in oklab, #377249 40%, transparent);
/* theme-aware in one line */
color: light-dark(#2A5637, #D6EBDC);
/* relative colour syntax */
--hover: hsl(from #377249 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: #F5F9F7;
  --brand-100: #ECF4EE;
  --brand-200: #D4E8DA;
  --brand-300: #B3DABF;
  --brand-400: #8DC89F;
  --brand-500: #68B680;
  --brand-600: #50A56A;
  --brand-700: #428A58;
  --brand-800: #377249;
  --brand-900: #2A5136;
  --brand-950: #1A3321;
  --brand: #377249;
  --brand-ink: #ffffff;
  --brand-surface: #F5FAF6;
  --brand-border: #C8E4D1;
  --brand-hover: #2B5A39;
  --brand-pressed: #20422A;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142419;
    --brand-ink: #D6EBDC;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5F9F7',
        100: '#ECF4EE',
        200: '#D4E8DA',
        300: '#B3DABF',
        400: '#8DC89F',
        500: '#68B680',
        600: '#50A56A',
        700: '#428A58',
        800: '#377249',
        900: '#2A5136',
        950: '#1A3321',
        DEFAULT: '#377249',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5F9F7,
  '100': #ECF4EE,
  '200': #D4E8DA,
  '300': #B3DABF,
  '400': #8DC89F,
  '500': #68B680,
  '600': #50A56A,
  '700': #428A58,
  '800': #377249,
  '900': #2A5136,
  '950': #1A3321,
);
$brand-base: #377249;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F5F9F7", "$type": "color" },
      "100": { "$value": "#ECF4EE", "$type": "color" },
      "200": { "$value": "#D4E8DA", "$type": "color" },
      "300": { "$value": "#B3DABF", "$type": "color" },
      "400": { "$value": "#8DC89F", "$type": "color" },
      "500": { "$value": "#68B680", "$type": "color" },
      "600": { "$value": "#50A56A", "$type": "color" },
      "700": { "$value": "#428A58", "$type": "color" },
      "800": { "$value": "#377249", "$type": "color" },
      "900": { "$value": "#2A5136", "$type": "color" },
      "950": { "$value": "#1A3321", "$type": "color" }
    },
    "brandInk": { "$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 #377249 · 5.73:1
Use #ffffffAA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 5.73:1 · recommended
AA pass · AA large pass · AAA fail
Aa
Black text · 3.67:1
AA fail · AA large pass · AAA fail
Reading the other direction: #377249 as text scores 5.73:1 on white and 3.67:1 on black.
Best tinted ink on it, if plain black or white feels flat: #EEF7F1 at 5.24:1.

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
#377249 · 5.73:1
AA on whitealready passes
#377249
The quick fox
#2F613E · 7.24:1
AAA on white−5% L
#2F613E
The quick fox
#3F8354 · 4.59:1
AA on black+5% L
#3F8354
The quick fox
#52A96C · 7.25:1
AAA on black+16% L
#52A96C

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #377249 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
#377249 on white: 5.73:1
AA ✓ pass · AA-large · AAA
Aa
#377249 on black: 3.67:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #377249 as text on that neutral, and that neutral as text on #377249.

NeutralRatioBoth directions
White5.73:1AaAa
Slate 505.48:1AaAa
Slate 1005.23:1AaAa
Slate 2004.65:1AaAa
Slate 3003.86:1AaAa
Slate 4002.23:1AaAa
Slate 5001.20:1AaAa
Slate 6001.32:1AaAa
Slate 7001.81:1AaAa
Slate 8002.55:1AaAa
Slate 9003.12:1AaAa
Black3.67:1AaAa
Colour vision deficiency
true color
protanopia · #726A46
deuteranopia · #6A644C
tritanopia · #2A7067

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. #377249 is pinned to step 800; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F5F9F7
#ECF4EE
#D4E8DA
#B3DABF
#8DC89F
#68B680
#50A56A
#428A58
#377249
#2A5136
#1A3321
Base = 800Lightest = 50 · #F5F9F7Darkest = 950 · #1A3321Text 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 0.023 151.8);
  --brand-100: oklch(0.94 0.036 151.8);
  --brand-200: oklch(0.88 0.054 151.8);
  --brand-300: oklch(0.80 0.070 151.8);
  --brand-400: oklch(0.72 0.083 151.8);
  --brand-500: oklch(0.64 0.090 151.8);
  --brand-600: oklch(0.56 0.090 151.8);
  --brand-700: oklch(0.48 0.085 151.8);
  --brand-800: oklch(0.40 0.076 151.8);
  --brand-900: oklch(0.32 0.063 151.8);
  --brand-950: oklch(0.24 0.050 151.8);
}

Colors that work with #377249

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#F5FAF6
Tinted page background
Border#C8E4D1
Hairlines and dividers
Muted text#4B9B63
Captions on the surface
Accent#753472
Second voice, not a rival
Dark variant#2A5637
Hover, pressed, headers
Light variant#EEF7F1
Selected rows, tints
Dark surface#142419
Dark-mode background
Hover#2B5A39
One step down in lightness
Pressed#20422A
Two steps down
Disabled#73A683
Chroma pulled out
Focus ring#34894E
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 #377249

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

Works well for
  • Body text and links on white
  • Charts, tags and secondary surfaces
  • Headers, footers and dark-mode surfaces
  • Brand accents, badges and data highlights
Use with care
  • 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.

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
  • Weight67/100
  • 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#723760
Analogous left#427237
Analogous right#377266
Split-complement 1#663772
Split-complement 2#723742
Triadic 1#493772
Triadic 2#724937
Tetradic#374272
On the wheel
Base+30°−30°+120°+240°+180°138°

#377249 sits at 138°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red21.6%
Green44.7%
Blue28.6%
R · 0–255
55
0x37
G · 0–255
114
0x72
B · 0–255
73
0x49

CMYK percentages

Cyan51.8%
Magenta0.0%
Yellow36.0%
Key (black)55.3%

Total ink coverage is 143%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#377249 text on a black background

contrast 3.67:1

Card sample

#377249 text on a white background

contrast 5.73:1

Card sample

#377249 on grey

5.23:1

#377249 on its own surface

5.43:1

#377249 on its dark surface

2.83:1

CSS3 live lab

Text font color

The quick brown fox

color: #377249;
Background color
Panel with #377249 background
background-color: #377249;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #377249;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(55, 114, 73, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(55, 114, 73, 0.45);
Border & gradient
Gradient panel
border: 3px solid #377249;
background: linear-gradient(135deg, #377249, #377270);
Gradient text

Gradient headline

background: linear-gradient(90deg, #377249, #376572);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #377249;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #377249;
caret-color: #377249;
Left rule
Pull quote or callout
border-left: 4px solid #377249;
Ring + tint
Selected chip
background: #EEF7F1;
box-shadow: inset 0 0 0 2px #377249;
Conic badge
68%
background: conic-gradient(#377249 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #377249 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(55, 114, 73, 0.5)
rgb(55 114 73 / 50%)
#37724980
hsl(138 35% 33% / 50%)
color-mix(in srgb, #377249 50%, transparent)
Alpha8-digit hexFlat on white
10%#3772491a#EBF1ED
20%#37724933#D7E3DB
40%#37724966#AFC7B6
60%#37724999#87AA92
80%#377249cc#5F8E6D

Gradients from #377249

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, #4B9B63, #377249 45%, #2A5637);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #377249, #2D5B5D);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #377249, #723760);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #57AE71 0%, #377249 45%, #2A5637 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F5FAF6, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #5D9448 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #41877F 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #2A5637 0%, transparent 65%), #377249;

Monochromatic scale

Palettes built from #377249

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.

#377249 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

Too dim on dark surfaces at 3.67:1 — lift it to #3F8354 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.

#377249, answered

What color is #377249?

#377249 is a dark soft green, closest to Sea Green (ΔE2000 9.1). It sits at 138° on the hue wheel with 35% saturation and 33% lightness, which reads as cool.

What is the RGB value of #377249?

rgb(55, 114, 73) — 55 red, 114 green and 73 blue out of 255, or 21.6% / 44.7% / 28.6% by channel.

What is #377249 in HSL and HSV?

hsl(138, 35%, 33%) and hsv(138, 52%, 45%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #377249 a light or a dark color?

It is a dark color. Relative luminance is 0.1333 and perceived brightness is 37%, so white text on it reaches 5.73:1.

Should I use black or white text on #377249?

White. It scores 5.73:1 against #377249, versus 3.67:1 for black — AA at any size.

Is #377249 accessible on a white background?

#377249 on white scores 5.73:1, which clears AA at every size but not AAA.

What is the complementary color of #377249?

#723760 sits directly opposite on the wheel. Softer options are the split-complements #663772 and #723742, which give the same contrast with far less vibration.

What colors go well with #377249?

For interface work: #F5FAF6 as the surface, #C8E4D1 for borders, #4B9B63 for secondary text, #753472 as an accent and #2A5637 for hover and pressed states. For a palette, the analogous pair #427237 and #377266 stays calm, while #723760 is the loudest partner.

What is #377249 in CMYK for printing?

cmyk(52%, 0%, 36%, 55%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #377249 warm or cool?

Cool — it scores 70 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #3B7237; nudged cooler, #35745F.

Which Tailwind color is closest to #377249?

The neutral family — its 500 step is #737373, ΔE2000 22.6 away. That is a visible difference, so define #377249 as a custom token rather than reaching for the built-in.

How do I use #377249 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#377249] or text-[#377249], 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 #377249 with 50% opacity?

rgba(55, 114, 73, 0.5), or #37724980 in eight-digit hex. Over white that composites to #9BB9A4; over black, #1C3925.

Is #377249 a web-safe color?

No. The nearest web-safe colour is #336633, ΔE2000 5.4 away. The palette only matters for legacy displays and some email clients now.

What does the color #377249 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 #377249?

The safest is same-hue elevation: linear-gradient(135deg, #4B9B63, #377249 45%, #2A5637). For more colour, a short hue run to #2D5B5D keeps it rich without turning muddy.

Work with #377249 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #377249 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.