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gray · neutral

#372f2f

a deep, muted gray · neutral · closest name: Black

Token name suggestion: Ink Ash

RGB
55, 47, 47
HSL
0°, 8%, 20%
CMYK
0, 15, 15, 78
Luminance
0.0305

#372f2f is a deep muted gray, 0° on the wheel and 43/100 on the cool side. Put white text on it (13.04:1). As text it scores 13.04:1 on white — safe at any size. Nearest name is Black, nearest Tailwind family is stone.

hsl(0 8% 20%)rgb(55 47 47)Base step 900AAA inkNeutral

At a glance

Every number on this page in one read: what #372f2f is made of, how bright it looks, and which way it leans.

Hex
#372f2f
Hue
gray
Saturation
8%
muted
Lightness
20%
deep
Brightness
22%
HSV value
Perceived
19%
weighted brightness
Luminance
0.0305
WCAG relative
Temperature
Neutral
43/100 cool
Color family
Gray
Tone
Muted
Best ink
White
13.04:1
Closest name
Black
ΔE2000 13.6
Chroma
3.9
LCH, 0–130ish
OKLCH L
0.314
perceptual lightness
Tailwind
stone
500 · ΔE 23
Web-safe
#333333
nearest of 216
Where it sits
Hue0° of 360°
Saturation8%
Lightness20%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #372f2f.

Temperature
Warm ← → Cool43% cool

Near-neutral, so temperature is a whisper rather than a statement — the tinted siblings below show which way it can lean.

Luminance by channel
Red27%
Green67%
Blue7%

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

Every format

HEX#372f2f
HEX (8-digit)#372f2fff
RGBrgb(55, 47, 47)
RGBArgba(55, 47, 47, 1)
HSLhsl(0, 8%, 20%)
HSV / HSBhsv(0, 15%, 22%)
HWBhwb(0 18% 78%)
CMYKcmyk(0%, 15%, 15%, 78%)
LABlab(20.3 3.6 1.3)
LCHlch(20.3 3.9 20.2)
OKLCHoklch(0.314 0.012 17.8)
XYZ (D65)xyz(3.11, 3.05, 3.11)
Decimal3616559
Display P3color(display-p3 0.216 0.184 0.184)
Web-safe#333333

Copy-ready code

every platformclick to select
/* CSS */
color: #372f2f;
background-color: #372f2f;
/* CSS custom property */
--brand: #372f2f;
/* Tailwind (arbitrary) */
class="text-[#372f2f] bg-[#372f2f]"
/* SCSS */
$brand: #372f2f;
/* SwiftUI */
Color(red: 0.216, green: 0.184, blue: 0.184)
/* UIKit */
UIColor(red: 0.216, green: 0.184, blue: 0.184, alpha: 1)
/* Android XML */
<color name="brand">#372F2F</color>
/* Android Compose */
Color(0xFF372F2F)
/* Flutter */
Color(0xFF372F2F)
/* Python / OpenCV (BGR) */
(47, 47, 55)
/* Python / PIL (RGB) */
(55, 47, 47)
/* Java AWT */
new Color(55, 47, 47)
/* .NET */
Color.FromArgb(255, 55, 47, 47)
/* OpenGL / Unity (0–1) */
(0.2157f, 0.1843f, 0.1843f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{55,47,47}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #372f2f 85%, white);
border-color: color-mix(in oklab, #372f2f 40%, transparent);
/* theme-aware in one line */
color: light-dark(#453B3B, #E3DEDE);
/* relative colour syntax */
--hover: hsl(from #372f2f 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: #F8F7F7;
  --brand-100: #F1EFEF;
  --brand-200: #E0DCDC;
  --brand-300: #CBC3C3;
  --brand-400: #B1A4A4;
  --brand-500: #988686;
  --brand-600: #847171;
  --brand-700: #6E5E5E;
  --brand-800: #584B4B;
  --brand-900: #372f2f;
  --brand-950: #292424;
  --brand: #372f2f;
  --brand-ink: #ffffff;
  --brand-surface: #F8F7F7;
  --brand-border: #D9D3D3;
  --brand-hover: #241F1F;
  --brand-pressed: #100E0E;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #1E1A1A;
    --brand-ink: #E3DEDE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F8F7F7',
        100: '#F1EFEF',
        200: '#E0DCDC',
        300: '#CBC3C3',
        400: '#B1A4A4',
        500: '#988686',
        600: '#847171',
        700: '#6E5E5E',
        800: '#584B4B',
        900: '#372f2f',
        950: '#292424',
        DEFAULT: '#372f2f',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F8F7F7,
  '100': #F1EFEF,
  '200': #E0DCDC,
  '300': #CBC3C3,
  '400': #B1A4A4,
  '500': #988686,
  '600': #847171,
  '700': #6E5E5E,
  '800': #584B4B,
  '900': #372f2f,
  '950': #292424,
);
$brand-base: #372f2f;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F8F7F7", "$type": "color" },
      "100": { "$value": "#F1EFEF", "$type": "color" },
      "200": { "$value": "#E0DCDC", "$type": "color" },
      "300": { "$value": "#CBC3C3", "$type": "color" },
      "400": { "$value": "#B1A4A4", "$type": "color" },
      "500": { "$value": "#988686", "$type": "color" },
      "600": { "$value": "#847171", "$type": "color" },
      "700": { "$value": "#6E5E5E", "$type": "color" },
      "800": { "$value": "#584B4B", "$type": "color" },
      "900": { "$value": "#372f2f", "$type": "color" },
      "950": { "$value": "#292424", "$type": "color" }
    },
    "brandInk": { "$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 #372f2f · 13.04:1
Use #ffffffAAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 13.04:1 · recommended
AA pass · AA large pass · AAA pass
Aa
Black text · 1.61:1
AA fail · AA large fail · AAA fail
Reading the other direction: #372f2f as text scores 13.04:1 on white and 1.61:1 on black.
Best tinted ink on it, if plain black or white feels flat: #F3F1F1 at 11.59:1.

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
#372f2f · 13.04:1
AA on whitealready passes
#372f2f
The quick fox
#372f2f · 13.04:1
AAA on whitealready passes
#372f2f
The quick fox
#847171 · 4.58:1
AA on black+28% L
#847171
The quick fox
#A39494 · 7.22:1
AAA on black+41% L
#A39494

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #372F2F 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
#372f2f on white: 13.04:1
AA ✓ pass · AA-large · AAA
Aa
#372f2f on black: 1.61:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #372f2f as text on that neutral, and that neutral as text on #372f2f.

NeutralRatioBoth directions
White13.04:1AaAa
Slate 5012.47:1AaAa
Slate 10011.91:1AaAa
Slate 20010.58:1AaAa
Slate 3008.78:1AaAa
Slate 4005.09:1AaAa
Slate 5002.74:1AaAa
Slate 6001.72:1AaAa
Slate 7001.26:1AaAa
Slate 8001.12:1AaAa
Slate 9001.37:1AaAa
Black1.61:1AaAa
Colour vision deficiency
true color
protanopia · #30302F
deuteranopia · #32312F
tritanopia · #392E2F

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. #372f2f 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.

#F8F7F7
#F1EFEF
#E0DCDC
#CBC3C3
#B1A4A4
#988686
#847171
#6E5E5E
#584B4B
#372f2f
#292424
Base = 900Lightest = 50 · #F8F7F7Darkest = 950 · #292424Text step on white = 600
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 0.003 17.8);
  --brand-100: oklch(0.94 0.005 17.8);
  --brand-200: oklch(0.88 0.007 17.8);
  --brand-300: oklch(0.80 0.009 17.8);
  --brand-400: oklch(0.72 0.011 17.8);
  --brand-500: oklch(0.64 0.012 17.8);
  --brand-600: oklch(0.56 0.012 17.8);
  --brand-700: oklch(0.48 0.011 17.8);
  --brand-800: oklch(0.40 0.010 17.8);
  --brand-900: oklch(0.32 0.008 17.8);
  --brand-950: oklch(0.24 0.006 17.8);
}

Colors that work with #372f2f

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#F8F7F7
Tinted page background
Border#D9D3D3
Hairlines and dividers
Muted text#7C6A6A
Captions on the surface
Accent#2D3936
Second voice, not a rival
Dark variant#453B3B
Hover, pressed, headers
Light variant#F3F1F1
Selected rows, tints
Dark surface#1E1A1A
Dark-mode background
Hover#241F1F
One step down in lightness
Pressed#100E0E
Two steps down
Disabled#736363
Chroma pulled out
Focus ring#483232
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 #372f2f

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

Works well for
  • Body text and links on white
  • Borders, dividers and quiet backgrounds
  • Long-form reading surfaces
  • Headers, footers and dark-mode surfaces
  • Neutral UI chrome and typography
Use with care
  • Text on black or near-black surfaces
  • Black text placed on it
  • 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.

neutralquieteditorialengineered

Grey is the material the rest of the interface is built from: type, rules, surfaces, disabled states.

With almost no chroma left, the family association is barely present; treat it as a neutral that happens to lean this way. The low lightness adds weight and formality.

Worth knowing

Mid-greys are where accessibility quietly fails — check every step of your ladder, not just the ends.

Reads as
  • FormalityHigh
  • EnergyLow
  • Weight80/100
  • 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#2F3737
Analogous left#372F33
Analogous right#37332F
Split-complement 1#2F3733
Split-complement 2#2F3337
Triadic 1#2F372F
Triadic 2#2F2F37
Tetradic#33372F
On the wheel
Base+30°−30°+120°+240°+180°0°

#372f2f sits at 0°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red21.6%
Green18.4%
Blue18.4%
R · 0–255
55
0x37
G · 0–255
47
0x2f
B · 0–255
47
0x2f

CMYK percentages

Cyan0.0%
Magenta14.5%
Yellow14.5%
Key (black)78.4%

Total ink coverage is 107%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#372f2f text on a black background

contrast 1.61:1

Card sample

#372f2f text on a white background

contrast 13.04:1

Card sample

#372f2f on grey

11.91:1

#372f2f on its own surface

12.20:1

#372f2f on its dark surface

1.32:1

CSS3 live lab

Text font color

The quick brown fox

color: #372f2f;
Background color
Panel with #372f2f background
background-color: #372f2f;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #372f2f;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(55, 47, 47, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(55, 47, 47, 0.45);
Border & gradient
Gradient panel
border: 3px solid #372f2f;
background: linear-gradient(135deg, #372f2f, #37342F);
Gradient text

Gradient headline

background: linear-gradient(90deg, #372f2f, #37362F);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #372f2f;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #372f2f;
caret-color: #372f2f;
Left rule
Pull quote or callout
border-left: 4px solid #372f2f;
Ring + tint
Selected chip
background: #F3F1F1;
box-shadow: inset 0 0 0 2px #372f2f;
Conic badge
68%
background: conic-gradient(#372f2f 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #372f2f 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, 47, 47, 0.5)
rgb(55 47 47 / 50%)
#372f2f80
hsl(0 8% 20% / 50%)
color-mix(in srgb, #372f2f 50%, transparent)
Alpha8-digit hexFlat on white
10%#372f2f1a#EBEAEA
20%#372f2f33#D7D5D5
40%#372f2f66#AFACAC
60%#372f2f99#878282
80%#372f2fcc#5F5959

Gradients from #372f2f

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, #584B4B, #372f2f 45%, #453B3B);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #372f2f, #262521);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #372f2f, #2F3737);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #685959 0%, #372f2f 45%, #453B3B 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F8F7F7, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #52474D 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #47433D 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #453B3B 0%, transparent 65%), #372f2f;

Monochromatic scale

Palettes built from #372f2f

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.

#372f2f in the real world

Where a color in this family tends to land, and the interface roles it is usually asked to play.

Industries
EditorialArchitectureEnterpriseLuxury goods
Common UI roles
BackgroundsBordersBody textDividers
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 1.61:1 — lift it to #847171 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.

#372f2f, answered

What color is #372f2f?

#372f2f is a deep muted gray, closest to Black (ΔE2000 13.6). It sits at 0° on the hue wheel with 8% saturation and 20% lightness, which reads as neutral.

What is the RGB value of #372f2f?

rgb(55, 47, 47) — 55 red, 47 green and 47 blue out of 255, or 21.6% / 18.4% / 18.4% by channel.

What is #372f2f in HSL and HSV?

hsl(0, 8%, 20%) and hsv(0, 15%, 22%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #372f2f a light or a dark color?

It is a dark color. Relative luminance is 0.0305 and perceived brightness is 19%, so white text on it reaches 13.04:1.

Should I use black or white text on #372f2f?

White. It scores 13.04:1 against #372f2f, versus 1.61:1 for black — AAA at any size.

Is #372f2f accessible on a white background?

#372f2f on white scores 13.04:1, which clears AAA at every size.

What is the complementary color of #372f2f?

#2F3737 sits directly opposite on the wheel. Softer options are the split-complements #2F3733 and #2F3337, which give the same contrast with far less vibration.

What colors go well with #372f2f?

For interface work: #F8F7F7 as the surface, #D9D3D3 for borders, #7C6A6A for secondary text, #2D3936 as an accent and #453B3B for hover and pressed states. For a palette, the analogous pair #372F33 and #37332F stays calm, while #2F3737 is the loudest partner.

What is #372f2f in CMYK for printing?

cmyk(0%, 15%, 15%, 78%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #372f2f warm or cool?

Neutral — it scores 43 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #403730; nudged cooler, #272E34.

Which Tailwind color is closest to #372f2f?

The stone family — its 500 step is #78716c, ΔE2000 23 away. That is a visible difference, so define #372f2f as a custom token rather than reaching for the built-in.

How do I use #372f2f in Tailwind CSS?

Inline it as an arbitrary value with bg-[#372f2f] or text-[#372f2f], 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 #372f2f with 50% opacity?

rgba(55, 47, 47, 0.5), or #372f2f80 in eight-digit hex. Over white that composites to #9B9797; over black, #1C1818.

Is #372f2f a web-safe color?

No. The nearest web-safe colour is #333333, ΔE2000 5 away. The palette only matters for legacy displays and some email clients now.

What does the color #372f2f mean?

As a gray, it reads neutral, quiet, editorial. Grey is the material the rest of the interface is built from: type, rules, surfaces, disabled states. At this low chroma the association is faint; it behaves more like a neutral.

What gradient works with #372f2f?

The safest is same-hue elevation: linear-gradient(135deg, #584B4B, #372f2f 45%, #453B3B). For more colour, a short hue run to #262521 keeps it rich without turning muddy.

Work with #372f2f in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #372f2f at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.