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green · cool

#254a21

a deep, soft green · cool · closest name: Dark Green

Token name suggestion: Abyss Jade

RGB
37, 74, 33
HSL
114°, 38%, 21%
CMYK
50, 0, 55, 71
Luminance
0.0540

#254a21 is a deep soft green, 114° on the wheel and 60/100 on the cool side. Put white text on it (10.10:1). As text it scores 10.10:1 on white — safe at any size. Nearest name is Dark Green, nearest Tailwind family is neutral.

hsl(114 38% 21%)rgb(37 74 33)Base step 900AAA inkCool

At a glance

Every number on this page in one read: what #254a21 is made of, how bright it looks, and which way it leans.

Hex
#254a21
Hue
114°
green
Saturation
38%
soft
Lightness
21%
deep
Brightness
29%
HSV value
Perceived
24%
weighted brightness
Luminance
0.0540
WCAG relative
Temperature
Cool
60/100 cool
Color family
Green
Tone
Soft
Best ink
White
10.10:1
Closest name
Dark Green
ΔE2000 11.8
Chroma
30.6
LCH, 0–130ish
OKLCH L
0.370
perceptual lightness
Tailwind
neutral
500 · ΔE 27.1
Web-safe
#333333
nearest of 216
Where it sits
Hue114° of 360°
Saturation38%
Lightness21%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #254a21.

Temperature
Warm ← → Cool60% 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
Red7%
Green91%
Blue2%

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

Every format

HEX#254a21
HEX (8-digit)#254a21ff
RGBrgb(37, 74, 33)
RGBArgba(37, 74, 33, 1)
HSLhsl(114, 38%, 21%)
HSV / HSBhsv(114, 55%, 29%)
HWBhwb(114 13% 71%)
CMYKcmyk(50%, 0%, 55%, 71%)
LABlab(27.9 -22.9 20.3)
LCHlch(27.9 30.6 138.4)
OKLCHoklch(0.370 0.079 141.8)
XYZ (D65)xyz(3.49, 5.40, 2.30)
Decimal2443809
Display P3color(display-p3 0.145 0.290 0.129)
Web-safe#333333

Copy-ready code

every platformclick to select
/* CSS */
color: #254a21;
background-color: #254a21;
/* CSS custom property */
--brand: #254a21;
/* Tailwind (arbitrary) */
class="text-[#254a21] bg-[#254a21]"
/* SCSS */
$brand: #254a21;
/* SwiftUI */
Color(red: 0.145, green: 0.290, blue: 0.129)
/* UIKit */
UIColor(red: 0.145, green: 0.290, blue: 0.129, alpha: 1)
/* Android XML */
<color name="brand">#254A21</color>
/* Android Compose */
Color(0xFF254A21)
/* Flutter */
Color(0xFF254A21)
/* Python / OpenCV (BGR) */
(33, 74, 37)
/* Python / PIL (RGB) */
(37, 74, 33)
/* Java AWT */
new Color(37, 74, 33)
/* .NET */
Color.FromArgb(255, 37, 74, 33)
/* OpenGL / Unity (0–1) */
(0.1451f, 0.2902f, 0.1294f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{37,74,33}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #254a21 85%, white);
border-color: color-mix(in oklab, #254a21 40%, transparent);
/* theme-aware in one line */
color: light-dark(#2C5827, #D7ECD5);
/* relative colour syntax */
--hover: hsl(from #254a21 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: #F6FAF5;
  --brand-100: #ECF4EB;
  --brand-200: #D5E9D3;
  --brand-300: #B6DCB1;
  --brand-400: #91CB8B;
  --brand-500: #6CBA64;
  --brand-600: #55A94C;
  --brand-700: #478D3F;
  --brand-800: #387132;
  --brand-900: #254a21;
  --brand-950: #1B3419;
  --brand: #254a21;
  --brand-ink: #ffffff;
  --brand-surface: #F5FAF4;
  --brand-border: #CAE6C7;
  --brand-hover: #193116;
  --brand-pressed: #0C190B;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #152414;
    --brand-ink: #D7ECD5;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F6FAF5',
        100: '#ECF4EB',
        200: '#D5E9D3',
        300: '#B6DCB1',
        400: '#91CB8B',
        500: '#6CBA64',
        600: '#55A94C',
        700: '#478D3F',
        800: '#387132',
        900: '#254a21',
        950: '#1B3419',
        DEFAULT: '#254a21',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F6FAF5,
  '100': #ECF4EB,
  '200': #D5E9D3,
  '300': #B6DCB1,
  '400': #91CB8B,
  '500': #6CBA64,
  '600': #55A94C,
  '700': #478D3F,
  '800': #387132,
  '900': #254a21,
  '950': #1B3419,
);
$brand-base: #254a21;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F6FAF5", "$type": "color" },
      "100": { "$value": "#ECF4EB", "$type": "color" },
      "200": { "$value": "#D5E9D3", "$type": "color" },
      "300": { "$value": "#B6DCB1", "$type": "color" },
      "400": { "$value": "#91CB8B", "$type": "color" },
      "500": { "$value": "#6CBA64", "$type": "color" },
      "600": { "$value": "#55A94C", "$type": "color" },
      "700": { "$value": "#478D3F", "$type": "color" },
      "800": { "$value": "#387132", "$type": "color" },
      "900": { "$value": "#254a21", "$type": "color" },
      "950": { "$value": "#1B3419", "$type": "color" }
    },
    "brandInk": { "$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 #254a21 · 10.10:1
Use #ffffffAAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 10.10:1 · recommended
AA pass · AA large pass · AAA pass
Aa
Black text · 2.08:1
AA fail · AA large fail · AAA fail
Reading the other direction: #254a21 as text scores 10.10:1 on white and 2.08:1 on black.
Best tinted ink on it, if plain black or white feels flat: #EEF7ED at 9.21:1.

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
#254a21 · 10.10:1
AA on whitealready passes
#254a21
The quick fox
#254a21 · 10.10:1
AAA on whitealready passes
#254a21
The quick fox
#43863C · 4.71:1
AA on black+17% L
#43863C
The quick fox
#55A94C · 7.17:1
AAA on black+27% L
#55A94C

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #254A21 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
#254a21 on white: 10.10:1
AA ✓ pass · AA-large · AAA
Aa
#254a21 on black: 2.08:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #254a21 as text on that neutral, and that neutral as text on #254a21.

NeutralRatioBoth directions
White10.10:1AaAa
Slate 509.65:1AaAa
Slate 1009.22:1AaAa
Slate 2008.19:1AaAa
Slate 3006.80:1AaAa
Slate 4003.94:1AaAa
Slate 5002.12:1AaAa
Slate 6001.33:1AaAa
Slate 7001.03:1AaAa
Slate 8001.45:1AaAa
Slate 9001.77:1AaAa
Black2.08:1AaAa
Colour vision deficiency
true color
protanopia · #4C441E
deuteranopia · #474024
tritanopia · #214840

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. #254a21 is pinned to step 900; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F6FAF5
#ECF4EB
#D5E9D3
#B6DCB1
#91CB8B
#6CBA64
#55A94C
#478D3F
#387132
#254a21
#1B3419
Base = 900Lightest = 50 · #F6FAF5Darkest = 950 · #1B3419Text 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 0.020 141.8);
  --brand-100: oklch(0.94 0.032 141.8);
  --brand-200: oklch(0.88 0.048 141.8);
  --brand-300: oklch(0.80 0.062 141.8);
  --brand-400: oklch(0.72 0.073 141.8);
  --brand-500: oklch(0.64 0.079 141.8);
  --brand-600: oklch(0.56 0.079 141.8);
  --brand-700: oklch(0.48 0.075 141.8);
  --brand-800: oklch(0.40 0.067 141.8);
  --brand-900: oklch(0.32 0.056 141.8);
  --brand-950: oklch(0.24 0.044 141.8);
}

Colors that work with #254a21

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#F5FAF4
Tinted page background
Border#CAE6C7
Hairlines and dividers
Muted text#529B4B
Captions on the surface
Accent#3C1F4C
Second voice, not a rival
Dark variant#2C5827
Hover, pressed, headers
Light variant#EEF7ED
Selected rows, tints
Dark surface#152414
Dark-mode background
Hover#193116
One step down in lightness
Pressed#0C190B
Two steps down
Disabled#5A8656
Chroma pulled out
Focus ring#275F21
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 #254a21

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
  • Text on black or near-black surfaces
  • 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
  • Weight79/100
  • TemperatureCool
  • ApproachabilityBalanced

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#46214A
Analogous left#3A4A21
Analogous right#214A32
Split-complement 1#32214A
Split-complement 2#4A213A
Triadic 1#21254A
Triadic 2#4A2125
Tetradic#213A4A
On the wheel
Base+30°−30°+120°+240°+180°114°

#254a21 sits at 114°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red14.5%
Green29.0%
Blue12.9%
R · 0–255
37
0x25
G · 0–255
74
0x4a
B · 0–255
33
0x21

CMYK percentages

Cyan50.0%
Magenta0.0%
Yellow55.4%
Key (black)71.0%

Total ink coverage is 176%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#254a21 text on a black background

contrast 2.08:1

Card sample

#254a21 text on a white background

contrast 10.10:1

Card sample

#254a21 on grey

9.22:1

#254a21 on its own surface

9.55:1

#254a21 on its dark surface

1.61:1

CSS3 live lab

Text font color

The quick brown fox

color: #254a21;
Background color
Panel with #254a21 background
background-color: #254a21;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #254a21;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(37, 74, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(37, 74, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #254a21;
background: linear-gradient(135deg, #254a21, #214A38);
Gradient text

Gradient headline

background: linear-gradient(90deg, #254a21, #214A43);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #254a21;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #254a21;
caret-color: #254a21;
Left rule
Pull quote or callout
border-left: 4px solid #254a21;
Ring + tint
Selected chip
background: #EEF7ED;
box-shadow: inset 0 0 0 2px #254a21;
Conic badge
68%
background: conic-gradient(#254a21 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #254a21 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(37, 74, 33, 0.5)
rgb(37 74 33 / 50%)
#254a2180
hsl(114 38% 21% / 50%)
color-mix(in srgb, #254a21 50%, transparent)
Alpha8-digit hexFlat on white
10%#254a211a#E9EDE9
20%#254a2133#D3DBD3
40%#254a2166#A8B7A6
60%#254a2199#7C927A
80%#254a21cc#516E4D

Gradients from #254a21

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, #3A7434, #254a21 45%, #2C5827);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #254a21, #18352B);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #254a21, #46214A);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #458A3D 0%, #254a21 45%, #2C5827 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F5FAF4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #5A6D31 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #2A5F44 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #2C5827 0%, transparent 65%), #254a21;

Monochromatic scale

Palettes built from #254a21

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.

#254a21 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 2.08:1 — lift it to #43863C 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.

#254a21, answered

What color is #254a21?

#254a21 is a deep soft green, closest to Dark Green (ΔE2000 11.8). It sits at 114° on the hue wheel with 38% saturation and 21% lightness, which reads as cool.

What is the RGB value of #254a21?

rgb(37, 74, 33) — 37 red, 74 green and 33 blue out of 255, or 14.5% / 29% / 12.9% by channel.

What is #254a21 in HSL and HSV?

hsl(114, 38%, 21%) and hsv(114, 55%, 29%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #254a21 a light or a dark color?

It is a dark color. Relative luminance is 0.0540 and perceived brightness is 24%, so white text on it reaches 10.10:1.

Should I use black or white text on #254a21?

White. It scores 10.10:1 against #254a21, versus 2.08:1 for black — AAA at any size.

Is #254a21 accessible on a white background?

#254a21 on white scores 10.10:1, which clears AAA at every size.

What is the complementary color of #254a21?

#46214A sits directly opposite on the wheel. Softer options are the split-complements #32214A and #4A213A, which give the same contrast with far less vibration.

What colors go well with #254a21?

For interface work: #F5FAF4 as the surface, #CAE6C7 for borders, #529B4B for secondary text, #3C1F4C as an accent and #2C5827 for hover and pressed states. For a palette, the analogous pair #3A4A21 and #214A32 stays calm, while #46214A is the loudest partner.

What is #254a21 in CMYK for printing?

cmyk(50%, 0%, 55%, 71%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #254a21 warm or cool?

Cool — it scores 60 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #344A21; nudged cooler, #204B2C.

Which Tailwind color is closest to #254a21?

The neutral family — its 500 step is #737373, ΔE2000 27.1 away. That is a visible difference, so define #254a21 as a custom token rather than reaching for the built-in.

How do I use #254a21 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#254a21] or text-[#254a21], 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 #254a21 with 50% opacity?

rgba(37, 74, 33, 0.5), or #254a2180 in eight-digit hex. Over white that composites to #92A590; over black, #132511.

Is #254a21 a web-safe color?

No. The nearest web-safe colour is #333333, ΔE2000 21.1 away. The palette only matters for legacy displays and some email clients now.

What does the color #254a21 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 #254a21?

The safest is same-hue elevation: linear-gradient(135deg, #3A7434, #254a21 45%, #2C5827). For more colour, a short hue run to #18352B keeps it rich without turning muddy.

Work with #254a21 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #254a21 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.