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cyan · cool

#1f2c2c

a deep, soft cyan · cool · closest name: Dark Slate Gray

Token name suggestion: Midnight Lagoon

RGB
31, 44, 44
HSL
180°, 17%, 15%
CMYK
30, 0, 0, 83
Luminance
0.0227

#1f2c2c is a deep soft cyan, 180° on the wheel and 69/100 on the cool side. Put white text on it (14.43:1). As text it scores 14.43:1 on white — safe at any size. Nearest name is Dark Slate Gray, nearest Tailwind family is neutral.

hsl(180 17% 15%)rgb(31 44 44)Base step 950AAA inkCool

At a glance

Every number on this page in one read: what #1f2c2c is made of, how bright it looks, and which way it leans.

Hex
#1f2c2c
Hue
180°
cyan
Saturation
17%
soft
Lightness
15%
deep
Brightness
17%
HSV value
Perceived
16%
weighted brightness
Luminance
0.0227
WCAG relative
Temperature
Cool
69/100 cool
Color family
Cyan
Tone
Soft
Best ink
White
14.43:1
Closest name
Dark Slate Gray
ΔE2000 12
Chroma
5.8
LCH, 0–130ish
OKLCH L
0.281
perceptual lightness
Tailwind
neutral
500 · ΔE 26.2
Web-safe
#333333
nearest of 216
Where it sits
Hue180° of 360°
Saturation17%
Lightness15%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #1f2c2c.

Temperature
Warm ← → Cool69% 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%
Green79%
Blue8%

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

Every format

HEX#1f2c2c
HEX (8-digit)#1f2c2cff
RGBrgb(31, 44, 44)
RGBArgba(31, 44, 44, 1)
HSLhsl(180, 17%, 15%)
HSV / HSBhsv(180, 30%, 17%)
HWBhwb(180 12% 83%)
CMYKcmyk(30%, 0%, 0%, 83%)
LABlab(16.9 -5.5 -1.8)
LCHlch(16.9 5.8 198.2)
OKLCHoklch(0.281 0.018 196.2)
XYZ (D65)xyz(1.92, 2.27, 2.72)
Decimal2042924
Display P3color(display-p3 0.122 0.173 0.173)
Web-safe#333333

Copy-ready code

every platformclick to select
/* CSS */
color: #1f2c2c;
background-color: #1f2c2c;
/* CSS custom property */
--brand: #1f2c2c;
/* Tailwind (arbitrary) */
class="text-[#1f2c2c] bg-[#1f2c2c]"
/* SCSS */
$brand: #1f2c2c;
/* SwiftUI */
Color(red: 0.122, green: 0.173, blue: 0.173)
/* UIKit */
UIColor(red: 0.122, green: 0.173, blue: 0.173, alpha: 1)
/* Android XML */
<color name="brand">#1F2C2C</color>
/* Android Compose */
Color(0xFF1F2C2C)
/* Flutter */
Color(0xFF1F2C2C)
/* Python / OpenCV (BGR) */
(44, 44, 31)
/* Python / PIL (RGB) */
(31, 44, 44)
/* Java AWT */
new Color(31, 44, 44)
/* .NET */
Color.FromArgb(255, 31, 44, 44)
/* OpenGL / Unity (0–1) */
(0.1216f, 0.1725f, 0.1725f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{31,44,44}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #1f2c2c 85%, white);
border-color: color-mix(in oklab, #1f2c2c 40%, transparent);
/* theme-aware in one line */
color: light-dark(#354B4B, #DBE6E6);
/* relative colour syntax */
--hover: hsl(from #1f2c2c 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: #F6F8F8;
  --brand-100: #EEF2F2;
  --brand-200: #D9E3E3;
  --brand-300: #BDD1D1;
  --brand-400: #9CB9B9;
  --brand-500: #7BA2A2;
  --brand-600: #659090;
  --brand-700: #547878;
  --brand-800: #436060;
  --brand-900: #334747;
  --brand-950: #1f2c2c;
  --brand: #1f2c2c;
  --brand-ink: #ffffff;
  --brand-surface: #F6F9F9;
  --brand-border: #CFDDDD;
  --brand-hover: #101717;
  --brand-pressed: #010202;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #172121;
    --brand-ink: #DBE6E6;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F6F8F8',
        100: '#EEF2F2',
        200: '#D9E3E3',
        300: '#BDD1D1',
        400: '#9CB9B9',
        500: '#7BA2A2',
        600: '#659090',
        700: '#547878',
        800: '#436060',
        900: '#334747',
        950: '#1f2c2c',
        DEFAULT: '#1f2c2c',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F6F8F8,
  '100': #EEF2F2,
  '200': #D9E3E3,
  '300': #BDD1D1,
  '400': #9CB9B9,
  '500': #7BA2A2,
  '600': #659090,
  '700': #547878,
  '800': #436060,
  '900': #334747,
  '950': #1f2c2c,
);
$brand-base: #1f2c2c;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F6F8F8", "$type": "color" },
      "100": { "$value": "#EEF2F2", "$type": "color" },
      "200": { "$value": "#D9E3E3", "$type": "color" },
      "300": { "$value": "#BDD1D1", "$type": "color" },
      "400": { "$value": "#9CB9B9", "$type": "color" },
      "500": { "$value": "#7BA2A2", "$type": "color" },
      "600": { "$value": "#659090", "$type": "color" },
      "700": { "$value": "#547878", "$type": "color" },
      "800": { "$value": "#436060", "$type": "color" },
      "900": { "$value": "#334747", "$type": "color" },
      "950": { "$value": "#1f2c2c", "$type": "color" }
    },
    "brandInk": { "$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 #1f2c2c · 14.43:1
Use #ffffffAAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 14.43:1 · recommended
AA pass · AA large pass · AAA pass
Aa
Black text · 1.45:1
AA fail · AA large fail · AAA fail
Reading the other direction: #1f2c2c as text scores 14.43:1 on white and 1.45:1 on black.
Best tinted ink on it, if plain black or white feels flat: #F0F4F4 at 13.03:1.

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
#1f2c2c · 14.43:1
AA on whitealready passes
#1f2c2c
The quick fox
#1f2c2c · 14.43:1
AAA on whitealready passes
#1f2c2c
The quick fox
#587D7D · 4.64:1
AA on black+27% L
#587D7D
The quick fox
#759D9D · 7.07:1
AAA on black+39% L
#759D9D

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #1F2C2C 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
#1f2c2c on white: 14.43:1
AA ✓ pass · AA-large · AAA
Aa
#1f2c2c on black: 1.45:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #1f2c2c as text on that neutral, and that neutral as text on #1f2c2c.

NeutralRatioBoth directions
White14.43:1AaAa
Slate 5013.80:1AaAa
Slate 10013.18:1AaAa
Slate 20011.71:1AaAa
Slate 3009.72:1AaAa
Slate 4005.63:1AaAa
Slate 5003.03:1AaAa
Slate 6001.90:1AaAa
Slate 7001.39:1AaAa
Slate 8001.01:1AaAa
Slate 9001.24:1AaAa
Black1.45:1AaAa
Colour vision deficiency
true color
protanopia · #2A2B2C
deuteranopia · #28292C
tritanopia · #1B2D2C

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. #1f2c2c 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.

#F6F8F8
#EEF2F2
#D9E3E3
#BDD1D1
#9CB9B9
#7BA2A2
#659090
#547878
#436060
#334747
#1f2c2c
Base = 950Lightest = 50 · #F6F8F8Darkest = 950 · #1f2c2cText 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 0.004 196.2);
  --brand-100: oklch(0.94 0.007 196.2);
  --brand-200: oklch(0.88 0.011 196.2);
  --brand-300: oklch(0.80 0.014 196.2);
  --brand-400: oklch(0.72 0.016 196.2);
  --brand-500: oklch(0.64 0.018 196.2);
  --brand-600: oklch(0.56 0.018 196.2);
  --brand-700: oklch(0.48 0.017 196.2);
  --brand-800: oklch(0.40 0.015 196.2);
  --brand-900: oklch(0.32 0.012 196.2);
  --brand-950: oklch(0.24 0.010 196.2);
}

Colors that work with #1f2c2c

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#F6F9F9
Tinted page background
Border#CFDDDD
Hairlines and dividers
Muted text#5F8787
Captions on the surface
Accent#2D1E21
Second voice, not a rival
Dark variant#354B4B
Hover, pressed, headers
Light variant#F0F4F4
Selected rows, tints
Dark surface#172121
Dark-mode background
Hover#101717
One step down in lightness
Pressed#010202
Two steps down
Disabled#4D6E6E
Chroma pulled out
Focus ring#233D3D
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 #1f2c2c

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
  • Thin strokes and 1px borders — they disappear on light UI
  • 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.

cleantechnicalfreshclinical

Cyan reads as water, air and infrastructure: cool, hygienic, engineered.

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

At high lightness it disappears into white surfaces and thin strokes vanish entirely.

Reads as
  • FormalityHigh
  • EnergyMedium
  • Weight85/100
  • TemperatureCool
  • ApproachabilityReserved

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#2C1F1F
Analogous left#1F2C25
Analogous right#1F252C
Split-complement 1#2C1F25
Split-complement 2#2C251F
Triadic 1#2C1F2C
Triadic 2#2C2C1F
Tetradic#251F2C
On the wheel
Base+30°−30°+120°+240°+180°180°

#1f2c2c sits at 180°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red12.2%
Green17.3%
Blue17.3%
R · 0–255
31
0x1f
G · 0–255
44
0x2c
B · 0–255
44
0x2c

CMYK percentages

Cyan29.5%
Magenta0.0%
Yellow0.0%
Key (black)82.7%

Total ink coverage is 112%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#1f2c2c text on a black background

contrast 1.45:1

Card sample

#1f2c2c text on a white background

contrast 14.43:1

Card sample

#1f2c2c on grey

13.18:1

#1f2c2c on its own surface

13.63:1

#1f2c2c on its dark surface

1.14:1

CSS3 live lab

Text font color

The quick brown fox

color: #1f2c2c;
Background color
Panel with #1f2c2c background
background-color: #1f2c2c;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #1f2c2c;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(31, 44, 44, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(31, 44, 44, 0.45);
Border & gradient
Gradient panel
border: 3px solid #1f2c2c;
background: linear-gradient(135deg, #1f2c2c, #1F232C);
Gradient text

Gradient headline

background: linear-gradient(90deg, #1f2c2c, #1F202C);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #1f2c2c;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #1f2c2c;
caret-color: #1f2c2c;
Left rule
Pull quote or callout
border-left: 4px solid #1f2c2c;
Ring + tint
Selected chip
background: #F0F4F4;
box-shadow: inset 0 0 0 2px #1f2c2c;
Conic badge
68%
background: conic-gradient(#1f2c2c 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #1f2c2c 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, 44, 44, 0.5)
rgb(31 44 44 / 50%)
#1f2c2c80
hsl(180 17% 15% / 50%)
color-mix(in srgb, #1f2c2c 50%, transparent)
Alpha8-digit hexFlat on white
10%#1f2c2c1a#E9EAEA
20%#1f2c2c33#D2D5D5
40%#1f2c2c66#A5ABAB
60%#1f2c2c99#798080
80%#1f2c2ccc#4C5656

Gradients from #1f2c2c

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, #385050, #1f2c2c 45%, #354B4B);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #1f2c2c, #12141A);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #1f2c2c, #2C1F1F);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #456262 0%, #1f2c2c 45%, #354B4B 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F6F9F9, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #344A3D 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #2C333E 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #354B4B 0%, transparent 65%), #1f2c2c;

Monochromatic scale

Palettes built from #1f2c2c

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.

#1f2c2c in the real world

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

Industries
TechnologyTravelHealthcareMedia
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 1.45:1 — lift it to #587D7D 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.

#1f2c2c, answered

What color is #1f2c2c?

#1f2c2c is a deep soft cyan, closest to Dark Slate Gray (ΔE2000 12). It sits at 180° on the hue wheel with 17% saturation and 15% lightness, which reads as cool.

What is the RGB value of #1f2c2c?

rgb(31, 44, 44) — 31 red, 44 green and 44 blue out of 255, or 12.2% / 17.3% / 17.3% by channel.

What is #1f2c2c in HSL and HSV?

hsl(180, 17%, 15%) and hsv(180, 30%, 17%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #1f2c2c a light or a dark color?

It is a dark color. Relative luminance is 0.0227 and perceived brightness is 16%, so white text on it reaches 14.43:1.

Should I use black or white text on #1f2c2c?

White. It scores 14.43:1 against #1f2c2c, versus 1.45:1 for black — AAA at any size.

Is #1f2c2c accessible on a white background?

#1f2c2c on white scores 14.43:1, which clears AAA at every size.

What is the complementary color of #1f2c2c?

#2C1F1F sits directly opposite on the wheel. Softer options are the split-complements #2C1F25 and #2C251F, which give the same contrast with far less vibration.

What colors go well with #1f2c2c?

For interface work: #F6F9F9 as the surface, #CFDDDD for borders, #5F8787 for secondary text, #2D1E21 as an accent and #354B4B for hover and pressed states. For a palette, the analogous pair #1F2C25 and #1F252C stays calm, while #2C1F1F is the loudest partner.

What is #1f2c2c in CMYK for printing?

cmyk(30%, 0%, 0%, 83%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #1f2c2c warm or cool?

Cool — it scores 69 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #1F2C27; nudged cooler, #1E272D.

Which Tailwind color is closest to #1f2c2c?

The neutral family — its 500 step is #737373, ΔE2000 26.2 away. That is a visible difference, so define #1f2c2c as a custom token rather than reaching for the built-in.

How do I use #1f2c2c in Tailwind CSS?

Inline it as an arbitrary value with bg-[#1f2c2c] or text-[#1f2c2c], 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 #1f2c2c with 50% opacity?

rgba(31, 44, 44, 0.5), or #1f2c2c80 in eight-digit hex. Over white that composites to #8F9696; over black, #101616.

Is #1f2c2c a web-safe color?

No. The nearest web-safe colour is #333333, ΔE2000 7.7 away. The palette only matters for legacy displays and some email clients now.

What does the color #1f2c2c mean?

As a cyan, it reads clean, technical, fresh. Cyan reads as water, air and infrastructure: cool, hygienic, engineered. At this moderate chroma the association is present but not shouted.

What gradient works with #1f2c2c?

The safest is same-hue elevation: linear-gradient(135deg, #385050, #1f2c2c 45%, #354B4B). For more colour, a short hue run to #12141A keeps it rich without turning muddy.

Work with #1f2c2c in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #1f2c2c at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.