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cyan · cool

#36938f

a dark, vivid cyan · cool · closest name: Dark Cyan

Token name suggestion: Slate Teal

RGB
54, 147, 143
HSL
177°, 46%, 39%
CMYK
63, 0, 3, 42
Luminance
0.2363

#36938f is a dark vivid cyan, 177° on the wheel and 86/100 on the cool side. Put black text on it (5.73:1). As text it scores 3.67:1 on white — large text only. Nearest name is Dark Cyan, nearest Tailwind family is teal.

hsl(177 46% 39%)rgb(54 147 143)Base step 700AA inkCool

At a glance

Every number on this page in one read: what #36938f is made of, how bright it looks, and which way it leans.

Hex
#36938f
Hue
177°
cyan
Saturation
46%
vivid
Lightness
39%
dark
Brightness
58%
HSV value
Perceived
49%
weighted brightness
Luminance
0.2363
WCAG relative
Temperature
Cool
86/100 cool
Color family
Cyan
Tone
Vivid
Best ink
Black
5.73:1
Closest name
Dark Cyan
ΔE2000 4
Chroma
28.5
LCH, 0–130ish
OKLCH L
0.608
perceptual lightness
Tailwind
teal
500 · ΔE 12
Web-safe
#339999
nearest of 216
Where it sits
Hue177° of 360°
Saturation46%
Lightness39%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #36938f.

Temperature
Warm ← → Cool86% 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
Red3%
Green88%
Blue8%

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

Every format

HEX#36938f
HEX (8-digit)#36938fff
RGBrgb(54, 147, 143)
RGBArgba(54, 147, 143, 1)
HSLhsl(177, 46%, 39%)
HSV / HSBhsv(177, 63%, 58%)
HWBhwb(177 21% 42%)
CMYKcmyk(63%, 0%, 3%, 42%)
LABlab(55.7 -27.9 -6.0)
LCHlch(55.7 28.5 192.1)
OKLCHoklch(0.608 0.086 191.1)
XYZ (D65)xyz(16.91, 23.63, 29.65)
Decimal3576719
Display P3color(display-p3 0.212 0.576 0.561)
Web-safe#339999

Copy-ready code

every platformclick to select
/* CSS */
color: #36938f;
background-color: #36938f;
/* CSS custom property */
--brand: #36938f;
/* Tailwind (arbitrary) */
class="text-[#36938f] bg-[#36938f]"
/* SCSS */
$brand: #36938f;
/* SwiftUI */
Color(red: 0.212, green: 0.576, blue: 0.561)
/* UIKit */
UIColor(red: 0.212, green: 0.576, blue: 0.561, alpha: 1)
/* Android XML */
<color name="brand">#36938F</color>
/* Android Compose */
Color(0xFF36938F)
/* Flutter */
Color(0xFF36938F)
/* Python / OpenCV (BGR) */
(143, 147, 54)
/* Python / PIL (RGB) */
(54, 147, 143)
/* Java AWT */
new Color(54, 147, 143)
/* .NET */
Color.FromArgb(255, 54, 147, 143)
/* OpenGL / Unity (0–1) */
(0.2118f, 0.5765f, 0.5608f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{54,147,143}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #36938f 85%, white);
border-color: color-mix(in oklab, #36938f 40%, transparent);
/* theme-aware in one line */
color: light-dark(#225D5B, #D3EEED);
/* relative colour syntax */
--hover: hsl(from #36938f 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: #F5FAFA;
  --brand-100: #EAF5F5;
  --brand-200: #D0EBEA;
  --brand-300: #ADE1DF;
  --brand-400: #84D2CE;
  --brand-500: #5BC3BE;
  --brand-600: #42B3AE;
  --brand-700: #36938f;
  --brand-800: #2C7774;
  --brand-900: #235755;
  --brand-950: #163735;
  --brand: #36938f;
  --brand-ink: #000000;
  --brand-surface: #F4FAFA;
  --brand-border: #C3E9E7;
  --brand-hover: #2C7976;
  --brand-pressed: #235F5C;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142424;
    --brand-ink: #D3EEED;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5FAFA',
        100: '#EAF5F5',
        200: '#D0EBEA',
        300: '#ADE1DF',
        400: '#84D2CE',
        500: '#5BC3BE',
        600: '#42B3AE',
        700: '#36938f',
        800: '#2C7774',
        900: '#235755',
        950: '#163735',
        DEFAULT: '#36938f',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5FAFA,
  '100': #EAF5F5,
  '200': #D0EBEA,
  '300': #ADE1DF,
  '400': #84D2CE,
  '500': #5BC3BE,
  '600': #42B3AE,
  '700': #36938f,
  '800': #2C7774,
  '900': #235755,
  '950': #163735,
);
$brand-base: #36938f;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F5FAFA", "$type": "color" },
      "100": { "$value": "#EAF5F5", "$type": "color" },
      "200": { "$value": "#D0EBEA", "$type": "color" },
      "300": { "$value": "#ADE1DF", "$type": "color" },
      "400": { "$value": "#84D2CE", "$type": "color" },
      "500": { "$value": "#5BC3BE", "$type": "color" },
      "600": { "$value": "#42B3AE", "$type": "color" },
      "700": { "$value": "#36938f", "$type": "color" },
      "800": { "$value": "#2C7774", "$type": "color" },
      "900": { "$value": "#235755", "$type": "color" },
      "950": { "$value": "#163735", "$type": "color" }
    },
    "brandInk": { "$value": "#000000", "$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#000000 on #36938f · 5.73:1
Use #000000AA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 3.67:1
AA fail · AA large pass · AAA fail
Aa
Black text · 5.73:1 · recommended
AA pass · AA large pass · AAA fail
Reading the other direction: #36938f as text scores 3.67:1 on white and 5.73:1 on black.
Best tinted ink on it, if plain black or white feels flat: #225D5B at 2.06:1.

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
#2F807D · 4.66:1
AA on white−5% L
#2F807D
The quick fox
#246260 · 7.02:1
AAA on white−13% L
#246260
The quick fox
#36938f · 5.73:1
AA on blackalready passes
#36938f
The quick fox
#3DA6A1 · 7.17:1
AAA on black+5% L
#3DA6A1

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #36938F 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
#36938f on white: 3.67:1
AA ✗ fail · AA-large · AAA
Aa
#36938f on black: 5.73:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #36938f as text on that neutral, and that neutral as text on #36938f.

NeutralRatioBoth directions
White3.67:1AaAa
Slate 503.50:1AaAa
Slate 1003.35:1AaAa
Slate 2002.97:1AaAa
Slate 3002.47:1AaAa
Slate 4001.43:1AaAa
Slate 5001.30:1AaAa
Slate 6002.07:1AaAa
Slate 7002.82:1AaAa
Slate 8003.99:1AaAa
Slate 9004.87:1AaAa
Black5.73:1AaAa
Colour vision deficiency
true color
protanopia · #8B8C8F
deuteranopia · #7C8190
tritanopia · #009792

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. #36938f is pinned to step 700; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F5FAFA
#EAF5F5
#D0EBEA
#ADE1DF
#84D2CE
#5BC3BE
#42B3AE
#36938f
#2C7774
#235755
#163735
Base = 700Lightest = 50 · #F5FAFADarkest = 950 · #163735Text 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 0.022 191.1);
  --brand-100: oklch(0.94 0.035 191.1);
  --brand-200: oklch(0.88 0.052 191.1);
  --brand-300: oklch(0.80 0.067 191.1);
  --brand-400: oklch(0.72 0.080 191.1);
  --brand-500: oklch(0.64 0.086 191.1);
  --brand-600: oklch(0.56 0.086 191.1);
  --brand-700: oklch(0.48 0.081 191.1);
  --brand-800: oklch(0.40 0.073 191.1);
  --brand-900: oklch(0.32 0.061 191.1);
  --brand-950: oklch(0.24 0.048 191.1);
}

Colors that work with #36938f

Not a palette — a role sheet. Each swatch answers one question you will hit while building the component.

Text on it#000000
Black wins here
Surface#F4FAFA
Tinted page background
Border#C3E9E7
Hairlines and dividers
Muted text#4B9B97
Captions on the surface
Accent#973250
Second voice, not a rival
Dark variant#225D5B
Hover, pressed, headers
Light variant#ECF8F8
Selected rows, tints
Dark surface#142424
Dark-mode background
Hover#2C7976
One step down in lightness
Pressed#235F5C
Two steps down
Disabled#87B2B0
Chroma pulled out
Focus ring#30ADA8
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 #36938f

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

Works well for
  • Headings from 24px up on white
  • Text and icons on dark surfaces
  • 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
  • Small text on white — under 4.5:1
  • Full-page backgrounds — tiring over long sessions
  • 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
24px / 18.66px bold
Safe as a fill behind white type
No — use #225D5B
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.

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

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

Reads as
  • FormalityHigh
  • EnergyMedium-high
  • Weight61/100
  • 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#93363A
Analogous left#369360
Analogous right#366993
Split-complement 1#933669
Split-complement 2#936036
Triadic 1#8F3693
Triadic 2#938F36
Tetradic#603693
On the wheel
Base+30°−30°+120°+240°+180°177°

#36938f sits at 177°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red21.2%
Green57.6%
Blue56.1%
R · 0–255
54
0x36
G · 0–255
147
0x93
B · 0–255
143
0x8f

CMYK percentages

Cyan63.3%
Magenta0.0%
Yellow2.7%
Key (black)42.4%

Total ink coverage is 108%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#36938f text on a black background

contrast 5.73:1

Card sample

#36938f text on a white background

contrast 3.67:1

Card sample

#36938f on grey

3.35:1

#36938f on its own surface

3.48:1

#36938f on its dark surface

4.38:1

CSS3 live lab

Text font color

The quick brown fox

color: #36938f;
Background color
Panel with #36938f background
background-color: #36938f;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #36938f;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(54, 147, 143, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(54, 147, 143, 0.45);
Border & gradient
Gradient panel
border: 3px solid #36938f;
background: linear-gradient(135deg, #36938f, #365993);
Gradient text

Gradient headline

background: linear-gradient(90deg, #36938f, #364293);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #36938f;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #36938f;
caret-color: #36938f;
Left rule
Pull quote or callout
border-left: 4px solid #36938f;
Ring + tint
Selected chip
background: #ECF8F8;
box-shadow: inset 0 0 0 2px #36938f;
Conic badge
68%
background: conic-gradient(#36938f 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #36938f 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(54, 147, 143, 0.5)
rgb(54 147 143 / 50%)
#36938f80
hsl(177 46% 39% / 50%)
color-mix(in srgb, #36938f 50%, transparent)
Alpha8-digit hexFlat on white
10%#36938f1a#EBF4F4
20%#36938f33#D7E9E9
40%#36938f66#AFD4D2
60%#36938f99#86BEBC
80%#36938fcc#5EA9A5

Gradients from #36938f

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, #4ABCB7, #36938f 45%, #225D5B);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #36938f, #2E457D);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #36938f, #93363A);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #60C5C0 0%, #36938f 45%, #225D5B 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAFA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #44B86F 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #3E6FA9 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #225D5B 0%, transparent 65%), #36938f;

Monochromatic scale

Palettes built from #36938f

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.

#36938f 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

Holds up across typical panel gamma. Still worth checking on an uncalibrated laptop, where mid-tones shift most.

In dark mode

Usable as-is on a dark surface at 5.73:1.

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.

#36938f, answered

What color is #36938f?

#36938f is a dark vivid cyan, closest to Dark Cyan (ΔE2000 4). It sits at 177° on the hue wheel with 46% saturation and 39% lightness, which reads as cool.

What is the RGB value of #36938f?

rgb(54, 147, 143) — 54 red, 147 green and 143 blue out of 255, or 21.2% / 57.6% / 56.1% by channel.

What is #36938f in HSL and HSV?

hsl(177, 46%, 39%) and hsv(177, 63%, 58%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #36938f a light or a dark color?

It is a mid-tone. Relative luminance is 0.2363 and perceived brightness is 49%, so black text on it reaches 5.73:1.

Should I use black or white text on #36938f?

Black. It scores 5.73:1 against #36938f, versus 3.67:1 for white — AA at any size.

Is #36938f accessible on a white background?

#36938f on white scores 3.67:1, which only clears AA for large text — 18.66px bold or 24px regular and up. Darken it to #2F807D to reach 4.5:1, or #246260 for 7:1.

What is the complementary color of #36938f?

#93363A sits directly opposite on the wheel. Softer options are the split-complements #933669 and #936036, which give the same contrast with far less vibration.

What colors go well with #36938f?

For interface work: #F4FAFA as the surface, #C3E9E7 for borders, #4B9B97 for secondary text, #973250 as an accent and #225D5B for hover and pressed states. For a palette, the analogous pair #369360 and #366993 stays calm, while #93363A is the loudest partner.

What is #36938f in CMYK for printing?

cmyk(63%, 0%, 3%, 42%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #36938f warm or cool?

Cool — it scores 86 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #36936D; nudged cooler, #347695.

Which Tailwind color is closest to #36938f?

The teal family — its 500 step is #14b8a6, ΔE2000 12 away. That is a visible difference, so define #36938f as a custom token rather than reaching for the built-in.

How do I use #36938f in Tailwind CSS?

Inline it as an arbitrary value with bg-[#36938f] or text-[#36938f], 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 #36938f with 50% opacity?

rgba(54, 147, 143, 0.5), or #36938f80 in eight-digit hex. Over white that composites to #9BC9C7; over black, #1B4A48.

Is #36938f a web-safe color?

No. The nearest web-safe colour is #339999, ΔE2000 2.6 away. The palette only matters for legacy displays and some email clients now.

What does the color #36938f mean?

As a cyan, it reads clean, technical, fresh. Cyan reads as water, air and infrastructure: cool, hygienic, engineered. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #36938f?

The safest is same-hue elevation: linear-gradient(135deg, #4ABCB7, #36938f 45%, #225D5B). For more colour, a short hue run to #2E457D keeps it rich without turning muddy.

Work with #36938f in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #36938f at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.