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green · cool

#121c13

a deep, soft green · cool · closest name: Black

Token name suggestion: Ink Fern

RGB
18, 28, 19
HSL
126°, 22%, 9%
CMYK
36, 0, 32, 89
Luminance
0.0101

#121c13 is a deep soft green, 126° on the wheel and 59/100 on the cool side. Put white text on it (17.48:1). As text it scores 17.48:1 on white — safe at any size. Nearest name is Black, nearest Tailwind family is neutral.

hsl(126 22% 9%)rgb(18 28 19)Base step 950AAA inkCool

At a glance

Every number on this page in one read: what #121c13 is made of, how bright it looks, and which way it leans.

Hex
#121c13
Hue
126°
green
Saturation
22%
soft
Lightness
9%
deep
Brightness
11%
HSV value
Perceived
10%
weighted brightness
Luminance
0.0101
WCAG relative
Temperature
Cool
59/100 cool
Color family
Green
Tone
Soft
Best ink
White
17.48:1
Closest name
Black
ΔE2000 10.5
Chroma
8.3
LCH, 0–130ish
OKLCH L
0.213
perceptual lightness
Tailwind
neutral
500 · ΔE 31.4
Web-safe
#003300
nearest of 216
Where it sits
Hue126° of 360°
Saturation22%
Lightness9%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #121c13.

Temperature
Warm ← → Cool59% 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
Red13%
Green83%
Blue5%

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

Every format

HEX#121c13
HEX (8-digit)#121c13ff
RGBrgb(18, 28, 19)
RGBArgba(18, 28, 19, 1)
HSLhsl(126, 22%, 9%)
HSV / HSBhsv(126, 36%, 11%)
HWBhwb(126 7% 89%)
CMYKcmyk(36%, 0%, 32%, 89%)
LABlab(9.0 -6.9 4.6)
LCHlch(9.0 8.3 146.5)
OKLCHoklch(0.213 0.023 147.3)
XYZ (D65)xyz(0.78, 1.01, 0.77)
Decimal1186835
Display P3color(display-p3 0.071 0.110 0.075)
Web-safe#003300

Copy-ready code

every platformclick to select
/* CSS */
color: #121c13;
background-color: #121c13;
/* CSS custom property */
--brand: #121c13;
/* Tailwind (arbitrary) */
class="text-[#121c13] bg-[#121c13]"
/* SCSS */
$brand: #121c13;
/* SwiftUI */
Color(red: 0.071, green: 0.110, blue: 0.075)
/* UIKit */
UIColor(red: 0.071, green: 0.110, blue: 0.075, alpha: 1)
/* Android XML */
<color name="brand">#121C13</color>
/* Android Compose */
Color(0xFF121C13)
/* Flutter */
Color(0xFF121C13)
/* Python / OpenCV (BGR) */
(19, 28, 18)
/* Python / PIL (RGB) */
(18, 28, 19)
/* Java AWT */
new Color(18, 28, 19)
/* .NET */
Color.FromArgb(255, 18, 28, 19)
/* OpenGL / Unity (0–1) */
(0.0706f, 0.1098f, 0.0745f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{18,28,19}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #121c13 85%, white);
border-color: color-mix(in oklab, #121c13 40%, transparent);
/* theme-aware in one line */
color: light-dark(#324E35, #DAE7DB);
/* relative colour syntax */
--hover: hsl(from #121c13 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: #F6F9F6;
  --brand-100: #EDF2EE;
  --brand-200: #D8E4D9;
  --brand-300: #BBD3BD;
  --brand-400: #99BD9C;
  --brand-500: #76A77B;
  --brand-600: #609565;
  --brand-700: #507C54;
  --brand-800: #406343;
  --brand-900: #314933;
  --brand-950: #121c13;
  --brand: #121c13;
  --brand-ink: #ffffff;
  --brand-surface: #F6F9F6;
  --brand-border: #CDDFCF;
  --brand-hover: #040604;
  --brand-pressed: #000000;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #162217;
    --brand-ink: #DAE7DB;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F6F9F6',
        100: '#EDF2EE',
        200: '#D8E4D9',
        300: '#BBD3BD',
        400: '#99BD9C',
        500: '#76A77B',
        600: '#609565',
        700: '#507C54',
        800: '#406343',
        900: '#314933',
        950: '#121c13',
        DEFAULT: '#121c13',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F6F9F6,
  '100': #EDF2EE,
  '200': #D8E4D9,
  '300': #BBD3BD,
  '400': #99BD9C,
  '500': #76A77B,
  '600': #609565,
  '700': #507C54,
  '800': #406343,
  '900': #314933,
  '950': #121c13,
);
$brand-base: #121c13;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F6F9F6", "$type": "color" },
      "100": { "$value": "#EDF2EE", "$type": "color" },
      "200": { "$value": "#D8E4D9", "$type": "color" },
      "300": { "$value": "#BBD3BD", "$type": "color" },
      "400": { "$value": "#99BD9C", "$type": "color" },
      "500": { "$value": "#76A77B", "$type": "color" },
      "600": { "$value": "#609565", "$type": "color" },
      "700": { "$value": "#507C54", "$type": "color" },
      "800": { "$value": "#406343", "$type": "color" },
      "900": { "$value": "#314933", "$type": "color" },
      "950": { "$value": "#121c13", "$type": "color" }
    },
    "brandInk": { "$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 #121c13 · 17.48:1
Use #ffffffAAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 17.48:1 · recommended
AA pass · AA large pass · AAA pass
Aa
Black text · 1.20:1
AA fail · AA large fail · AAA fail
Reading the other direction: #121c13 as text scores 17.48:1 on white and 1.20:1 on black.
Best tinted ink on it, if plain black or white feels flat: #EFF5F0 at 15.81:1.

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
#121c13 · 17.48:1
AA on whitealready passes
#121c13
The quick fox
#121c13 · 17.48:1
AAA on whitealready passes
#121c13
The quick fox
#527F56 · 4.53:1
AA on black+32% L
#527F56
The quick fox
#70A375 · 7.18:1
AAA on black+45% L
#70A375

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #121C13 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
#121c13 on white: 17.48:1
AA ✓ pass · AA-large · AAA
Aa
#121c13 on black: 1.20:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #121c13 as text on that neutral, and that neutral as text on #121c13.

NeutralRatioBoth directions
White17.48:1AaAa
Slate 5016.71:1AaAa
Slate 10015.96:1AaAa
Slate 20014.18:1AaAa
Slate 30011.77:1AaAa
Slate 4006.82:1AaAa
Slate 5003.67:1AaAa
Slate 6002.31:1AaAa
Slate 7001.69:1AaAa
Slate 8001.20:1AaAa
Slate 9001.02:1AaAa
Black1.20:1AaAa
Colour vision deficiency
true color
protanopia · #1C1A12
deuteranopia · #1B1913
tritanopia · #111C1A

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. #121c13 is pinned to step 950; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F6F9F6
#EDF2EE
#D8E4D9
#BBD3BD
#99BD9C
#76A77B
#609565
#507C54
#406343
#314933
#121c13
Base = 950Lightest = 50 · #F6F9F6Darkest = 950 · #121c13Text step on white = 700
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 0.006 147.3);
  --brand-100: oklch(0.94 0.009 147.3);
  --brand-200: oklch(0.88 0.014 147.3);
  --brand-300: oklch(0.80 0.018 147.3);
  --brand-400: oklch(0.72 0.021 147.3);
  --brand-500: oklch(0.64 0.023 147.3);
  --brand-600: oklch(0.56 0.023 147.3);
  --brand-700: oklch(0.48 0.021 147.3);
  --brand-800: oklch(0.40 0.019 147.3);
  --brand-900: oklch(0.32 0.016 147.3);
  --brand-950: oklch(0.24 0.013 147.3);
}

Colors that work with #121c13

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#F6F9F6
Tinted page background
Border#CDDFCF
Hairlines and dividers
Muted text#5A8C5F
Captions on the surface
Accent#1B111D
Second voice, not a rival
Dark variant#324E35
Hover, pressed, headers
Light variant#EFF5F0
Selected rows, tints
Dark surface#162217
Dark-mode background
Hover#040604
One step down in lightness
Pressed#000000
Two steps down
Disabled#3E6041
Chroma pulled out
Focus ring#172C19
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 #121c13

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
  • Weight91/100
  • 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#1C121B
Analogous left#161C12
Analogous right#121C18
Split-complement 1#18121C
Split-complement 2#1C1216
Triadic 1#13121C
Triadic 2#1C1312
Tetradic#12161C
On the wheel
Base+30°−30°+120°+240°+180°126°

#121c13 sits at 126°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red7.1%
Green11.0%
Blue7.5%
R · 0–255
18
0x12
G · 0–255
28
0x1c
B · 0–255
19
0x13

CMYK percentages

Cyan35.7%
Magenta0.0%
Yellow32.1%
Key (black)89.0%

Total ink coverage is 157%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#121c13 text on a black background

contrast 1.20:1

Card sample

#121c13 text on a white background

contrast 17.48:1

Card sample

#121c13 on grey

15.96:1

#121c13 on its own surface

16.48:1

#121c13 on its dark surface

1.06:1

CSS3 live lab

Text font color

The quick brown fox

color: #121c13;
Background color
Panel with #121c13 background
background-color: #121c13;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #121c13;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(18, 28, 19, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(18, 28, 19, 0.45);
Border & gradient
Gradient panel
border: 3px solid #121c13;
background: linear-gradient(135deg, #121c13, #121C1A);
Gradient text

Gradient headline

background: linear-gradient(90deg, #121c13, #121C1C);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #121c13;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #121c13;
caret-color: #121c13;
Left rule
Pull quote or callout
border-left: 4px solid #121c13;
Ring + tint
Selected chip
background: #EFF5F0;
box-shadow: inset 0 0 0 2px #121c13;
Conic badge
68%
background: conic-gradient(#121c13 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #121c13 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(18, 28, 19, 0.5)
rgb(18 28 19 / 50%)
#121c1380
hsl(126 22% 9% / 50%)
color-mix(in srgb, #121c13 50%, transparent)
Alpha8-digit hexFlat on white
10%#121c131a#E7E8E7
20%#121c1333#D0D2D0
40%#121c1366#A0A4A1
60%#121c1399#717771
80%#121c13cc#414942

Gradients from #121c13

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, #2A412C, #121c13 45%, #324E35);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #121c13, #060909);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #121c13, #1C121B);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #365439 0%, #121c13 45%, #324E35 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F6F9F6, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #303B26 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #1E2F29 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #324E35 0%, transparent 65%), #121c13;

Monochromatic scale

Palettes built from #121c13

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.

#121c13 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

Very dark values collapse into each other on cheap panels — leave more lightness between your darkest steps than the numbers suggest.

In dark mode

Too dim on dark surfaces at 1.20:1 — lift it to #527F56 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.

#121c13, answered

What color is #121c13?

#121c13 is a deep soft green, closest to Black (ΔE2000 10.5). It sits at 126° on the hue wheel with 22% saturation and 9% lightness, which reads as cool.

What is the RGB value of #121c13?

rgb(18, 28, 19) — 18 red, 28 green and 19 blue out of 255, or 7.1% / 11% / 7.5% by channel.

What is #121c13 in HSL and HSV?

hsl(126, 22%, 9%) and hsv(126, 36%, 11%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #121c13 a light or a dark color?

It is a dark color. Relative luminance is 0.0101 and perceived brightness is 10%, so white text on it reaches 17.48:1.

Should I use black or white text on #121c13?

White. It scores 17.48:1 against #121c13, versus 1.20:1 for black — AAA at any size.

Is #121c13 accessible on a white background?

#121c13 on white scores 17.48:1, which clears AAA at every size.

What is the complementary color of #121c13?

#1C121B sits directly opposite on the wheel. Softer options are the split-complements #18121C and #1C1216, which give the same contrast with far less vibration.

What colors go well with #121c13?

For interface work: #F6F9F6 as the surface, #CDDFCF for borders, #5A8C5F for secondary text, #1B111D as an accent and #324E35 for hover and pressed states. For a palette, the analogous pair #161C12 and #121C18 stays calm, while #1C121B is the loudest partner.

What is #121c13 in CMYK for printing?

cmyk(36%, 0%, 32%, 89%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #121c13 warm or cool?

Cool — it scores 59 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #151C12; nudged cooler, #121C17.

Which Tailwind color is closest to #121c13?

The neutral family — its 500 step is #737373, ΔE2000 31.4 away. That is a visible difference, so define #121c13 as a custom token rather than reaching for the built-in.

How do I use #121c13 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#121c13] or text-[#121c13], 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 #121c13 with 50% opacity?

rgba(18, 28, 19, 0.5), or #121c1380 in eight-digit hex. Over white that composites to #898E89; over black, #090E0A.

Is #121c13 a web-safe color?

No. The nearest web-safe colour is #003300, ΔE2000 15.8 away. The palette only matters for legacy displays and some email clients now.

What does the color #121c13 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 #121c13?

The safest is same-hue elevation: linear-gradient(135deg, #2A412C, #121c13 45%, #324E35). For more colour, a short hue run to #060909 keeps it rich without turning muddy.

Work with #121c13 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #121c13 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.