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green · cool

#1c8621

a dark, vivid green · cool · closest name: Forest Green

Token name suggestion: Shadow Jade

RGB
28, 134, 33
HSL
123°, 65%, 32%
CMYK
79, 0, 75, 48
Luminance
0.1741

#1c8621 is a dark vivid green, 123° on the wheel and 64/100 on the cool side. Put white text on it (4.69:1). As text it scores 4.69:1 on white — safe at any size. Nearest name is Forest Green, nearest Tailwind family is green.

hsl(123 65% 32%)rgb(28 134 33)Base step 800AA inkCool

At a glance

Every number on this page in one read: what #1c8621 is made of, how bright it looks, and which way it leans.

Hex
#1c8621
Hue
123°
green
Saturation
65%
vivid
Lightness
32%
dark
Brightness
53%
HSV value
Perceived
41%
weighted brightness
Luminance
0.1741
WCAG relative
Temperature
Cool
64/100 cool
Color family
Green
Tone
Vivid
Best ink
White
4.69:1
Closest name
Forest Green
ΔE2000 1.9
Chroma
65.5
LCH, 0–130ish
OKLCH L
0.542
perceptual lightness
Tailwind
green
500 · ΔE 19.6
Web-safe
#339933
nearest of 216
Where it sits
Hue123° of 360°
Saturation65%
Lightness32%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #1c8621.

Temperature
Warm ← → Cool64% 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
Red1%
Green98%
Blue1%

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

Every format

HEX#1c8621
HEX (8-digit)#1c8621ff
RGBrgb(28, 134, 33)
RGBArgba(28, 134, 33, 1)
HSLhsl(123, 65%, 32%)
HSV / HSBhsv(123, 79%, 53%)
HWBhwb(123 11% 47%)
CMYKcmyk(79%, 0%, 75%, 48%)
LABlab(48.8 -49.0 43.5)
LCHlch(48.8 65.5 138.4)
OKLCHoklch(0.542 0.165 143.4)
XYZ (D65)xyz(9.28, 17.41, 4.31)
Decimal1869345
Display P3color(display-p3 0.110 0.525 0.129)
Web-safe#339933

Copy-ready code

every platformclick to select
/* CSS */
color: #1c8621;
background-color: #1c8621;
/* CSS custom property */
--brand: #1c8621;
/* Tailwind (arbitrary) */
class="text-[#1c8621] bg-[#1c8621]"
/* SCSS */
$brand: #1c8621;
/* SwiftUI */
Color(red: 0.110, green: 0.525, blue: 0.129)
/* UIKit */
UIColor(red: 0.110, green: 0.525, blue: 0.129, alpha: 1)
/* Android XML */
<color name="brand">#1C8621</color>
/* Android Compose */
Color(0xFF1C8621)
/* Flutter */
Color(0xFF1C8621)
/* Python / OpenCV (BGR) */
(33, 134, 28)
/* Python / PIL (RGB) */
(28, 134, 33)
/* Java AWT */
new Color(28, 134, 33)
/* .NET */
Color.FromArgb(255, 28, 134, 33)
/* OpenGL / Unity (0–1) */
(0.1098f, 0.5255f, 0.1294f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{28,134,33}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #1c8621 85%, white);
border-color: color-mix(in oklab, #1c8621 40%, transparent);
/* theme-aware in one line */
color: light-dark(#16691A, #D3EED4);
/* relative colour syntax */
--hover: hsl(from #1c8621 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: #F3FBF4;
  --brand-100: #E8F8E9;
  --brand-200: #CBF1CD;
  --brand-300: #A2ECA6;
  --brand-400: #74E279;
  --brand-500: #45D84C;
  --brand-600: #2ACA32;
  --brand-700: #23A92A;
  --brand-800: #1c8621;
  --brand-900: #18621C;
  --brand-950: #0F3D11;
  --brand: #1c8621;
  --brand-ink: #ffffff;
  --brand-surface: #F4FAF5;
  --brand-border: #C0EDC2;
  --brand-hover: #16691A;
  --brand-pressed: #104B12;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142414;
    --brand-ink: #D3EED4;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F3FBF4',
        100: '#E8F8E9',
        200: '#CBF1CD',
        300: '#A2ECA6',
        400: '#74E279',
        500: '#45D84C',
        600: '#2ACA32',
        700: '#23A92A',
        800: '#1c8621',
        900: '#18621C',
        950: '#0F3D11',
        DEFAULT: '#1c8621',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F3FBF4,
  '100': #E8F8E9,
  '200': #CBF1CD,
  '300': #A2ECA6,
  '400': #74E279,
  '500': #45D84C,
  '600': #2ACA32,
  '700': #23A92A,
  '800': #1c8621,
  '900': #18621C,
  '950': #0F3D11,
);
$brand-base: #1c8621;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F3FBF4", "$type": "color" },
      "100": { "$value": "#E8F8E9", "$type": "color" },
      "200": { "$value": "#CBF1CD", "$type": "color" },
      "300": { "$value": "#A2ECA6", "$type": "color" },
      "400": { "$value": "#74E279", "$type": "color" },
      "500": { "$value": "#45D84C", "$type": "color" },
      "600": { "$value": "#2ACA32", "$type": "color" },
      "700": { "$value": "#23A92A", "$type": "color" },
      "800": { "$value": "#1c8621", "$type": "color" },
      "900": { "$value": "#18621C", "$type": "color" },
      "950": { "$value": "#0F3D11", "$type": "color" }
    },
    "brandInk": { "$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 #1c8621 · 4.69:1
Use #ffffffAA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 4.69:1 · recommended
AA pass · AA large pass · AAA fail
Aa
Black text · 4.48:1
AA fail · AA large pass · AAA fail
Reading the other direction: #1c8621 as text scores 4.69:1 on white and 4.48:1 on black.
Best tinted ink on it, if plain black or white feels flat: #EAFBEB at 4.35:1.

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
#1c8621 · 4.69:1
AA on whitealready passes
#1c8621
The quick fox
#156419 · 7.32:1
AAA on white−8% L
#156419
The quick fox
#1D8A22 · 4.71:1
AA on black+1% L
#1D8A22
The quick fox
#24AC2A · 7.01:1
AAA on black+9% L
#24AC2A

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #1C8621 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
#1c8621 on white: 4.69:1
AA ✓ pass · AA-large · AAA
Aa
#1c8621 on black: 4.48:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #1c8621 as text on that neutral, and that neutral as text on #1c8621.

NeutralRatioBoth directions
White4.69:1AaAa
Slate 504.48:1AaAa
Slate 1004.28:1AaAa
Slate 2003.80:1AaAa
Slate 3003.16:1AaAa
Slate 4001.83:1AaAa
Slate 5001.02:1AaAa
Slate 6001.62:1AaAa
Slate 7002.21:1AaAa
Slate 8003.12:1AaAa
Slate 9003.81:1AaAa
Black4.48:1AaAa
Colour vision deficiency
true color
protanopia · #89790E
deuteranopia · #7D712C
tritanopia · #008272

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. #1c8621 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.

#F3FBF4
#E8F8E9
#CBF1CD
#A2ECA6
#74E279
#45D84C
#2ACA32
#23A92A
#1c8621
#18621C
#0F3D11
Base = 800Lightest = 50 · #F3FBF4Darkest = 950 · #0F3D11Text 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 0.041 143.4);
  --brand-100: oklch(0.94 0.066 143.4);
  --brand-200: oklch(0.88 0.099 143.4);
  --brand-300: oklch(0.80 0.129 143.4);
  --brand-400: oklch(0.72 0.152 143.4);
  --brand-500: oklch(0.64 0.165 143.4);
  --brand-600: oklch(0.56 0.165 143.4);
  --brand-700: oklch(0.48 0.155 143.4);
  --brand-800: oklch(0.40 0.139 143.4);
  --brand-900: oklch(0.32 0.116 143.4);
  --brand-950: oklch(0.24 0.091 143.4);
}

Colors that work with #1c8621

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#F4FAF5
Tinted page background
Border#C0EDC2
Hairlines and dividers
Muted text#4B9B4E
Captions on the surface
Accent#721989
Second voice, not a rival
Dark variant#16691A
Hover, pressed, headers
Light variant#EAFBEB
Selected rows, tints
Dark surface#142414
Dark-mode background
Hover#16691A
One step down in lightness
Pressed#104B12
Two steps down
Disabled#6FA372
Chroma pulled out
Focus ring#16A01D
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 #1c8621

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
  • 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.

This is a confident chroma: strong enough to lead a brand, restrained enough to live in an interface all day. 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-high
  • Weight68/100
  • 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#861C81
Analogous left#4C861C
Analogous right#1C8656
Split-complement 1#561C86
Split-complement 2#861C4C
Triadic 1#211C86
Triadic 2#86211C
Tetradic#1C4C86
On the wheel
Base+30°−30°+120°+240°+180°123°

#1c8621 sits at 123°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red11.0%
Green52.5%
Blue12.9%
R · 0–255
28
0x1c
G · 0–255
134
0x86
B · 0–255
33
0x21

CMYK percentages

Cyan79.1%
Magenta0.0%
Yellow75.4%
Key (black)47.5%

Total ink coverage is 202%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#1c8621 text on a black background

contrast 4.48:1

Card sample

#1c8621 text on a white background

contrast 4.69:1

Card sample

#1c8621 on grey

4.28:1

#1c8621 on its own surface

4.43:1

#1c8621 on its dark surface

3.47:1

CSS3 live lab

Text font color

The quick brown fox

color: #1c8621;
Background color
Panel with #1c8621 background
background-color: #1c8621;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #1c8621;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(28, 134, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(28, 134, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #1c8621;
background: linear-gradient(135deg, #1c8621, #1C8668);
Gradient text

Gradient headline

background: linear-gradient(90deg, #1c8621, #1C8682);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #1c8621;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #1c8621;
caret-color: #1c8621;
Left rule
Pull quote or callout
border-left: 4px solid #1c8621;
Ring + tint
Selected chip
background: #EAFBEB;
box-shadow: inset 0 0 0 2px #1c8621;
Conic badge
68%
background: conic-gradient(#1c8621 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #1c8621 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(28, 134, 33, 0.5)
rgb(28 134 33 / 50%)
#1c862180
hsl(123 65% 32% / 50%)
color-mix(in srgb, #1c8621 50%, transparent)
Alpha8-digit hexFlat on white
10%#1c86211a#E8F3E9
20%#1c862133#D2E7D3
40%#1c862166#A4CFA6
60%#1c862199#77B67A
80%#1c8621cc#499E4D

Gradients from #1c8621

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, #27B92D, #1c8621 45%, #16691A);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #1c8621, #176D5B);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #1c8621, #861C81);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #2CD234 0%, #1c8621 45%, #16691A 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%, #70B025 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #219F71 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #16691A 0%, transparent 65%), #1c8621;

Monochromatic scale

Palettes built from #1c8621

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.

#1c8621 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 4.48:1 — lift it to #1D8A22 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.

#1c8621, answered

What color is #1c8621?

#1c8621 is a dark vivid green, closest to Forest Green (ΔE2000 1.9). It sits at 123° on the hue wheel with 65% saturation and 32% lightness, which reads as cool.

What is the RGB value of #1c8621?

rgb(28, 134, 33) — 28 red, 134 green and 33 blue out of 255, or 11% / 52.5% / 12.9% by channel.

What is #1c8621 in HSL and HSV?

hsl(123, 65%, 32%) and hsv(123, 79%, 53%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #1c8621 a light or a dark color?

It is a dark color. Relative luminance is 0.1741 and perceived brightness is 41%, so white text on it reaches 4.69:1.

Should I use black or white text on #1c8621?

White. It scores 4.69:1 against #1c8621, versus 4.48:1 for black — AA at any size.

Is #1c8621 accessible on a white background?

#1c8621 on white scores 4.69:1, which clears AA at every size but not AAA.

What is the complementary color of #1c8621?

#861C81 sits directly opposite on the wheel. Softer options are the split-complements #561C86 and #861C4C, which give the same contrast with far less vibration.

What colors go well with #1c8621?

For interface work: #F4FAF5 as the surface, #C0EDC2 for borders, #4B9B4E for secondary text, #721989 as an accent and #16691A for hover and pressed states. For a palette, the analogous pair #4C861C and #1C8656 stays calm, while #861C81 is the loudest partner.

What is #1c8621 in CMYK for printing?

cmyk(79%, 0%, 75%, 48%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #1c8621 warm or cool?

Cool — it scores 64 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #3E861C; nudged cooler, #1A8848.

Which Tailwind color is closest to #1c8621?

The green family — its 500 step is #22c55e, ΔE2000 19.6 away. That is a visible difference, so define #1c8621 as a custom token rather than reaching for the built-in.

How do I use #1c8621 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#1c8621] or text-[#1c8621], 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 #1c8621 with 50% opacity?

rgba(28, 134, 33, 0.5), or #1c862180 in eight-digit hex. Over white that composites to #8EC390; over black, #0E4311.

Is #1c8621 a web-safe color?

No. The nearest web-safe colour is #339933, ΔE2000 6.9 away. The palette only matters for legacy displays and some email clients now.

What does the color #1c8621 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 #1c8621?

The safest is same-hue elevation: linear-gradient(135deg, #27B92D, #1c8621 45%, #16691A). For more colour, a short hue run to #176D5B keeps it rich without turning muddy.

Work with #1c8621 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #1c8621 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.