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green · neutral

#1f331c

a deep, soft green · neutral · closest name: Dark Slate Gray

Token name suggestion: Midnight Basil

RGB
31, 51, 28
HSL
112°, 29%, 16%
CMYK
39, 0, 45, 80
Luminance
0.0274

#1f331c is a deep soft green, 112° on the wheel and 58/100 on the cool side. Put white text on it (13.56:1). As text it scores 13.56:1 on white — safe at any size. Nearest name is Dark Slate Gray, nearest Tailwind family is neutral.

hsl(112 29% 16%)rgb(31 51 28)Base step 950AAA inkNeutral

At a glance

Every number on this page in one read: what #1f331c is made of, how bright it looks, and which way it leans.

Hex
#1f331c
Hue
112°
green
Saturation
29%
soft
Lightness
16%
deep
Brightness
20%
HSV value
Perceived
17%
weighted brightness
Luminance
0.0274
WCAG relative
Temperature
Neutral
58/100 cool
Color family
Green
Tone
Soft
Best ink
White
13.56:1
Closest name
Dark Slate Gray
ΔE2000 14.7
Chroma
18.3
LCH, 0–130ish
OKLCH L
0.297
perceptual lightness
Tailwind
neutral
500 · ΔE 28.4
Web-safe
#333333
nearest of 216
Where it sits
Hue112° of 360°
Saturation29%
Lightness16%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #1f331c.

Temperature
Warm ← → Cool58% cool

Reads neutral. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.

Luminance by channel
Red11%
Green86%
Blue3%

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

Every format

HEX#1f331c
HEX (8-digit)#1f331cff
RGBrgb(31, 51, 28)
RGBArgba(31, 51, 28, 1)
HSLhsl(112, 29%, 16%)
HSV / HSBhsv(112, 45%, 20%)
HWBhwb(112 11% 80%)
CMYKcmyk(39%, 0%, 45%, 80%)
LABlab(19.0 -13.7 12.1)
LCHlch(19.0 18.3 138.5)
OKLCHoklch(0.297 0.048 141.2)
XYZ (D65)xyz(1.96, 2.74, 1.52)
Decimal2044700
Display P3color(display-p3 0.122 0.200 0.110)
Web-safe#333333

Copy-ready code

every platformclick to select
/* CSS */
color: #1f331c;
background-color: #1f331c;
/* CSS custom property */
--brand: #1f331c;
/* Tailwind (arbitrary) */
class="text-[#1f331c] bg-[#1f331c]"
/* SCSS */
$brand: #1f331c;
/* SwiftUI */
Color(red: 0.122, green: 0.200, blue: 0.110)
/* UIKit */
UIColor(red: 0.122, green: 0.200, blue: 0.110, alpha: 1)
/* Android XML */
<color name="brand">#1F331C</color>
/* Android Compose */
Color(0xFF1F331C)
/* Flutter */
Color(0xFF1F331C)
/* Python / OpenCV (BGR) */
(28, 51, 31)
/* Python / PIL (RGB) */
(31, 51, 28)
/* Java AWT */
new Color(31, 51, 28)
/* .NET */
Color.FromArgb(255, 31, 51, 28)
/* OpenGL / Unity (0–1) */
(0.1216f, 0.2000f, 0.1098f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{31,51,28}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #1f331c 85%, white);
border-color: color-mix(in oklab, #1f331c 40%, transparent);
/* theme-aware in one line */
color: light-dark(#32522D, #DAE9D7);
/* relative colour syntax */
--hover: hsl(from #1f331c 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: #EDF3EC;
  --brand-200: #D8E6D5;
  --brand-300: #BBD7B7;
  --brand-400: #99C392;
  --brand-500: #77AF6E;
  --brand-600: #609E57;
  --brand-700: #508448;
  --brand-800: #40693A;
  --brand-900: #314E2D;
  --brand-950: #1f331c;
  --brand: #1f331c;
  --brand-ink: #ffffff;
  --brand-surface: #F6FAF5;
  --brand-border: #CDE2CA;
  --brand-hover: #111C0F;
  --brand-pressed: #030503;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #162414;
    --brand-ink: #DAE9D7;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F6F9F6',
        100: '#EDF3EC',
        200: '#D8E6D5',
        300: '#BBD7B7',
        400: '#99C392',
        500: '#77AF6E',
        600: '#609E57',
        700: '#508448',
        800: '#40693A',
        900: '#314E2D',
        950: '#1f331c',
        DEFAULT: '#1f331c',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F6F9F6,
  '100': #EDF3EC,
  '200': #D8E6D5,
  '300': #BBD7B7,
  '400': #99C392,
  '500': #77AF6E,
  '600': #609E57,
  '700': #508448,
  '800': #40693A,
  '900': #314E2D,
  '950': #1f331c,
);
$brand-base: #1f331c;
$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": "#EDF3EC", "$type": "color" },
      "200": { "$value": "#D8E6D5", "$type": "color" },
      "300": { "$value": "#BBD7B7", "$type": "color" },
      "400": { "$value": "#99C392", "$type": "color" },
      "500": { "$value": "#77AF6E", "$type": "color" },
      "600": { "$value": "#609E57", "$type": "color" },
      "700": { "$value": "#508448", "$type": "color" },
      "800": { "$value": "#40693A", "$type": "color" },
      "900": { "$value": "#314E2D", "$type": "color" },
      "950": { "$value": "#1f331c", "$type": "color" }
    },
    "brandInk": { "$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 #1f331c · 13.56:1
Use #ffffffAAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 13.56:1 · recommended
AA pass · AA large pass · AAA pass
Aa
Black text · 1.55:1
AA fail · AA large fail · AAA fail
Reading the other direction: #1f331c as text scores 13.56:1 on white and 1.55:1 on black.
Best tinted ink on it, if plain black or white feels flat: #F0F6EF at 12.36:1.

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
#1f331c · 13.56:1
AA on whitealready passes
#1f331c
The quick fox
#1f331c · 13.56:1
AAA on whitealready passes
#1f331c
The quick fox
#4F8247 · 4.62:1
AA on black+24% L
#4F8247
The quick fox
#66A65C · 7.17:1
AAA on black+35% L
#66A65C

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #1F331C 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
#1f331c on white: 13.56:1
AA ✓ pass · AA-large · AAA
Aa
#1f331c on black: 1.55:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #1f331c as text on that neutral, and that neutral as text on #1f331c.

NeutralRatioBoth directions
White13.56:1AaAa
Slate 5012.96:1AaAa
Slate 10012.38:1AaAa
Slate 20011.00:1AaAa
Slate 3009.13:1AaAa
Slate 4005.29:1AaAa
Slate 5002.85:1AaAa
Slate 6001.79:1AaAa
Slate 7001.31:1AaAa
Slate 8001.08:1AaAa
Slate 9001.32:1AaAa
Black1.55:1AaAa
Colour vision deficiency
true color
protanopia · #342F1A
deuteranopia · #312D1D
tritanopia · #1D322D

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. #1f331c 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
#EDF3EC
#D8E6D5
#BBD7B7
#99C392
#77AF6E
#609E57
#508448
#40693A
#314E2D
#1f331c
Base = 950Lightest = 50 · #F6F9F6Darkest = 950 · #1f331cText 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 0.012 141.2);
  --brand-100: oklch(0.94 0.019 141.2);
  --brand-200: oklch(0.88 0.029 141.2);
  --brand-300: oklch(0.80 0.037 141.2);
  --brand-400: oklch(0.72 0.044 141.2);
  --brand-500: oklch(0.64 0.048 141.2);
  --brand-600: oklch(0.56 0.048 141.2);
  --brand-700: oklch(0.48 0.045 141.2);
  --brand-800: oklch(0.40 0.040 141.2);
  --brand-900: oklch(0.32 0.034 141.2);
  --brand-950: oklch(0.24 0.026 141.2);
}

Colors that work with #1f331c

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#F6FAF5
Tinted page background
Border#CDE2CA
Hairlines and dividers
Muted text#5A9451
Captions on the surface
Accent#2B1A35
Second voice, not a rival
Dark variant#32522D
Hover, pressed, headers
Light variant#F0F6EF
Selected rows, tints
Dark surface#162414
Dark-mode background
Hover#111C0F
One step down in lightness
Pressed#030503
Two steps down
Disabled#50754B
Chroma pulled out
Focus ring#23451E
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 #1f331c

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
  • Weight85/100
  • TemperatureNeutral
  • 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#301C33
Analogous left#2B331C
Analogous right#1C3325
Split-complement 1#251C33
Split-complement 2#331C2B
Triadic 1#1C1F33
Triadic 2#331C1F
Tetradic#1C2B33
On the wheel
Base+30°−30°+120°+240°+180°112°

#1f331c sits at 112°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red12.2%
Green20.0%
Blue11.0%
R · 0–255
31
0x1f
G · 0–255
51
0x33
B · 0–255
28
0x1c

CMYK percentages

Cyan39.2%
Magenta0.0%
Yellow45.1%
Key (black)80.0%

Total ink coverage is 164%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#1f331c text on a black background

contrast 1.55:1

Card sample

#1f331c text on a white background

contrast 13.56:1

Card sample

#1f331c on grey

12.38:1

#1f331c on its own surface

12.86:1

#1f331c on its dark surface

1.19:1

CSS3 live lab

Text font color

The quick brown fox

color: #1f331c;
Background color
Panel with #1f331c background
background-color: #1f331c;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #1f331c;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(31, 51, 28, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(31, 51, 28, 0.45);
Border & gradient
Gradient panel
border: 3px solid #1f331c;
background: linear-gradient(135deg, #1f331c, #1C3328);
Gradient text

Gradient headline

background: linear-gradient(90deg, #1f331c, #1C332E);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #1f331c;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #1f331c;
caret-color: #1f331c;
Left rule
Pull quote or callout
border-left: 4px solid #1f331c;
Ring + tint
Selected chip
background: #F0F6EF;
box-shadow: inset 0 0 0 2px #1f331c;
Conic badge
68%
background: conic-gradient(#1f331c 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #1f331c 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(31, 51, 28, 0.5)
rgb(31 51 28 / 50%)
#1f331c80
hsl(112 29% 16% / 50%)
color-mix(in srgb, #1f331c 50%, transparent)
Alpha8-digit hexFlat on white
10%#1f331c1a#E9EBE8
20%#1f331c33#D2D6D2
40%#1f331c66#A5ADA4
60%#1f331c99#798577
80%#1f331ccc#4C5C49

Gradients from #1f331c

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, #375B32, #1f331c 45%, #32522D);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #1f331c, #111F1A);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #1f331c, #301C33);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #436E3D 0%, #1f331c 45%, #32522D 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F6FAF5, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #49542E 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #274735 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #32522D 0%, transparent 65%), #1f331c;

Monochromatic scale

Palettes built from #1f331c

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.

#1f331c 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 1.55:1 — lift it to #4F8247 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.

#1f331c, answered

What color is #1f331c?

#1f331c is a deep soft green, closest to Dark Slate Gray (ΔE2000 14.7). It sits at 112° on the hue wheel with 29% saturation and 16% lightness, which reads as neutral.

What is the RGB value of #1f331c?

rgb(31, 51, 28) — 31 red, 51 green and 28 blue out of 255, or 12.2% / 20% / 11% by channel.

What is #1f331c in HSL and HSV?

hsl(112, 29%, 16%) and hsv(112, 45%, 20%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #1f331c a light or a dark color?

It is a dark color. Relative luminance is 0.0274 and perceived brightness is 17%, so white text on it reaches 13.56:1.

Should I use black or white text on #1f331c?

White. It scores 13.56:1 against #1f331c, versus 1.55:1 for black — AAA at any size.

Is #1f331c accessible on a white background?

#1f331c on white scores 13.56:1, which clears AAA at every size.

What is the complementary color of #1f331c?

#301C33 sits directly opposite on the wheel. Softer options are the split-complements #251C33 and #331C2B, which give the same contrast with far less vibration.

What colors go well with #1f331c?

For interface work: #F6FAF5 as the surface, #CDE2CA for borders, #5A9451 for secondary text, #2B1A35 as an accent and #32522D for hover and pressed states. For a palette, the analogous pair #2B331C and #1C3325 stays calm, while #301C33 is the loudest partner.

What is #1f331c in CMYK for printing?

cmyk(39%, 0%, 45%, 80%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #1f331c warm or cool?

Neutral — it scores 58 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #27331C; nudged cooler, #1B3421.

Which Tailwind color is closest to #1f331c?

The neutral family — its 500 step is #737373, ΔE2000 28.4 away. That is a visible difference, so define #1f331c as a custom token rather than reaching for the built-in.

How do I use #1f331c in Tailwind CSS?

Inline it as an arbitrary value with bg-[#1f331c] or text-[#1f331c], 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 #1f331c with 50% opacity?

rgba(31, 51, 28, 0.5), or #1f331c80 in eight-digit hex. Over white that composites to #8F998E; over black, #101A0E.

Is #1f331c a web-safe color?

No. The nearest web-safe colour is #333333, ΔE2000 15.5 away. The palette only matters for legacy displays and some email clients now.

What does the color #1f331c 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 #1f331c?

The safest is same-hue elevation: linear-gradient(135deg, #375B32, #1f331c 45%, #32522D). For more colour, a short hue run to #111F1A keeps it rich without turning muddy.

Work with #1f331c in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #1f331c at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.