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cyan · cool

#36cdda

a balanced, vivid cyan · cool · closest name: Dark Turquoise

Token name suggestion: Signal Glacier

RGB
54, 205, 218
HSL
185°, 69%, 53%
CMYK
75, 6, 0, 15
Luminance
0.4951

#36cdda is a balanced vivid cyan, 185° on the wheel and 89/100 on the cool side. Put black text on it (10.90:1). As text it scores 1.93:1 on white — use #1A828B instead. Nearest name is Dark Turquoise, nearest Tailwind family is cyan.

hsl(185 69% 53%)rgb(54 205 218)Base step 500AAA inkCool

At a glance

Every number on this page in one read: what #36cdda is made of, how bright it looks, and which way it leans.

Hex
#36cdda
Hue
185°
cyan
Saturation
69%
vivid
Lightness
53%
balanced
Brightness
85%
HSV value
Perceived
69%
weighted brightness
Luminance
0.4951
WCAG relative
Temperature
Cool
89/100 cool
Color family
Cyan
Tone
Vivid
Best ink
Black
10.90:1
Closest name
Dark Turquoise
ΔE2000 4.1
Chroma
38.1
LCH, 0–130ish
OKLCH L
0.778
perceptual lightness
Tailwind
cyan
500 · ΔE 8.2
Web-safe
#33CCCC
nearest of 216
Where it sits
Hue185° of 360°
Saturation69%
Lightness53%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #36cdda.

Temperature
Warm ← → Cool89% 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
Red2%
Green88%
Blue10%

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

Every format

HEX#36cdda
HEX (8-digit)#36cddaff
RGBrgb(54, 205, 218)
RGBArgba(54, 205, 218, 1)
HSLhsl(185, 69%, 53%)
HSV / HSBhsv(185, 75%, 85%)
HWBhwb(185 21% 15%)
CMYKcmyk(75%, 6%, 0%, 15%)
LABlab(75.8 -33.8 -17.6)
LCHlch(75.8 38.1 207.5)
OKLCHoklch(0.778 0.121 203.7)
XYZ (D65)xyz(36.00, 49.50, 73.97)
Decimal3591642
Display P3color(display-p3 0.212 0.804 0.855)
Web-safe#33CCCC

Copy-ready code

every platformclick to select
/* CSS */
color: #36cdda;
background-color: #36cdda;
/* CSS custom property */
--brand: #36cdda;
/* Tailwind (arbitrary) */
class="text-[#36cdda] bg-[#36cdda]"
/* SCSS */
$brand: #36cdda;
/* SwiftUI */
Color(red: 0.212, green: 0.804, blue: 0.855)
/* UIKit */
UIColor(red: 0.212, green: 0.804, blue: 0.855, alpha: 1)
/* Android XML */
<color name="brand">#36CDDA</color>
/* Android Compose */
Color(0xFF36CDDA)
/* Flutter */
Color(0xFF36CDDA)
/* Python / OpenCV (BGR) */
(218, 205, 54)
/* Python / PIL (RGB) */
(54, 205, 218)
/* Java AWT */
new Color(54, 205, 218)
/* .NET */
Color.FromArgb(255, 54, 205, 218)
/* OpenGL / Unity (0–1) */
(0.2118f, 0.8039f, 0.8549f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{54,205,218}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #36cdda 85%, white);
border-color: color-mix(in oklab, #36cdda 40%, transparent);
/* theme-aware in one line */
color: light-dark(#14656C, #D3ECEE);
/* relative colour syntax */
--hover: hsl(from #36cdda 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: #F3FBFB;
  --brand-100: #E7F7F8;
  --brand-200: #CAEFF2;
  --brand-300: #A0E7EE;
  --brand-400: #71DCE5;
  --brand-500: #36cdda;
  --brand-600: #26C1CF;
  --brand-700: #20A1AC;
  --brand-800: #19818A;
  --brand-900: #165E64;
  --brand-950: #0E3B3E;
  --brand: #36cdda;
  --brand-ink: #000000;
  --brand-surface: #F4FAFA;
  --brand-border: #C0E9ED;
  --brand-hover: #25BAC7;
  --brand-pressed: #1F9EA9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142324;
    --brand-ink: #D3ECEE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F3FBFB',
        100: '#E7F7F8',
        200: '#CAEFF2',
        300: '#A0E7EE',
        400: '#71DCE5',
        500: '#36cdda',
        600: '#26C1CF',
        700: '#20A1AC',
        800: '#19818A',
        900: '#165E64',
        950: '#0E3B3E',
        DEFAULT: '#36cdda',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F3FBFB,
  '100': #E7F7F8,
  '200': #CAEFF2,
  '300': #A0E7EE,
  '400': #71DCE5,
  '500': #36cdda,
  '600': #26C1CF,
  '700': #20A1AC,
  '800': #19818A,
  '900': #165E64,
  '950': #0E3B3E,
);
$brand-base: #36cdda;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F3FBFB", "$type": "color" },
      "100": { "$value": "#E7F7F8", "$type": "color" },
      "200": { "$value": "#CAEFF2", "$type": "color" },
      "300": { "$value": "#A0E7EE", "$type": "color" },
      "400": { "$value": "#71DCE5", "$type": "color" },
      "500": { "$value": "#36cdda", "$type": "color" },
      "600": { "$value": "#26C1CF", "$type": "color" },
      "700": { "$value": "#20A1AC", "$type": "color" },
      "800": { "$value": "#19818A", "$type": "color" },
      "900": { "$value": "#165E64", "$type": "color" },
      "950": { "$value": "#0E3B3E", "$type": "color" }
    },
    "brandInk": { "$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 #36cdda · 10.90:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.93:1
AA fail · AA large fail · AAA fail
Aa
Black text · 10.90:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #36cdda as text scores 1.93:1 on white and 10.90:1 on black.
Best tinted ink on it, if plain black or white feels flat: #14656C at 3.51:1.

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
#1A828B · 4.56:1
AA on white−21% L
#1A828B
The quick fox
#136269 · 7.05:1
AAA on white−29% L
#136269
The quick fox
#36cdda · 10.90:1
AA on blackalready passes
#36cdda
The quick fox
#36cdda · 10.90:1
AAA on blackalready passes
#36cdda

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #20A2AE 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
#36cdda on white: 1.93:1
AA ✗ fail · AA-large · AAA
Aa
#36cdda on black: 10.90:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #36cdda as text on that neutral, and that neutral as text on #36cdda.

NeutralRatioBoth directions
White1.93:1AaAa
Slate 501.84:1AaAa
Slate 1001.76:1AaAa
Slate 2001.56:1AaAa
Slate 3001.30:1AaAa
Slate 4001.33:1AaAa
Slate 5002.47:1AaAa
Slate 6003.93:1AaAa
Slate 7005.38:1AaAa
Slate 8007.59:1AaAa
Slate 9009.27:1AaAa
Black10.90:1AaAa
Colour vision deficiency
true color
protanopia · #BCC4DB
deuteranopia · #A6B4DB
tritanopia · #00D5D1

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. #36cdda is pinned to step 500; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F3FBFB
#E7F7F8
#CAEFF2
#A0E7EE
#71DCE5
#36cdda
#26C1CF
#20A1AC
#19818A
#165E64
#0E3B3E
Base = 500Lightest = 50 · #F3FBFBDarkest = 950 · #0E3B3EText 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 0.030 203.7);
  --brand-100: oklch(0.94 0.049 203.7);
  --brand-200: oklch(0.88 0.073 203.7);
  --brand-300: oklch(0.80 0.095 203.7);
  --brand-400: oklch(0.72 0.112 203.7);
  --brand-500: oklch(0.64 0.121 203.7);
  --brand-600: oklch(0.56 0.121 203.7);
  --brand-700: oklch(0.48 0.114 203.7);
  --brand-800: oklch(0.40 0.102 203.7);
  --brand-900: oklch(0.32 0.085 203.7);
  --brand-950: oklch(0.24 0.067 203.7);
}

Colors that work with #36cdda

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#C0E9ED
Hairlines and dividers
Muted text#4B949B
Captions on the surface
Accent#DF314F
Second voice, not a rival
Dark variant#14656C
Hover, pressed, headers
Light variant#E9FAFB
Selected rows, tints
Dark surface#142324
Dark-mode background
Hover#25BAC7
One step down in lightness
Pressed#1F9EA9
Two steps down
Disabled#B2CCCE
Chroma pulled out
Focus ring#3CDAE8
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 #36cdda

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

Works well for
  • Text and icons on dark surfaces
  • Primary buttons and calls to action
  • Focus rings, active and selected states
  • Brand accents, badges and data highlights
  • Chart series and data categories
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • Thin strokes and 1px borders — they disappear on light UI
  • Pairing with a same-lightness hue — edges vibrate
Minimum size as text on white
Not as text
Safe as a fill behind white type
No — use #14656C
Safe as a 1px border on white
No — use #20A2AE

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 mid lightness keeps it versatile in both themes.

Worth knowing

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

Reads as
  • FormalityMedium
  • EnergyMedium-high
  • Weight47/100
  • 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#DA4336
Analogous left#36DA95
Analogous right#367BDA
Split-complement 1#DA367B
Split-complement 2#DA9536
Triadic 1#DA36CD
Triadic 2#CDDA36
Tetradic#9536DA
On the wheel
Base+30°−30°+120°+240°+180°185°

#36cdda sits at 185°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red21.2%
Green80.4%
Blue85.5%
R · 0–255
54
0x36
G · 0–255
205
0xcd
B · 0–255
218
0xda

CMYK percentages

Cyan75.2%
Magenta6.0%
Yellow0.0%
Key (black)14.5%

Total ink coverage is 96%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#36cdda text on a black background

contrast 10.90:1

Card sample

#36cdda text on a white background

contrast 1.93:1

Card sample

#36cdda on grey

1.76:1

#36cdda on its own surface

1.83:1

#36cdda on its dark surface

8.41:1

CSS3 live lab

Text font color

The quick brown fox

color: #36cdda;
Background color
Panel with #36cdda background
background-color: #36cdda;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #36cdda;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(54, 205, 218, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(54, 205, 218, 0.45);
Border & gradient
Gradient panel
border: 3px solid #36cdda;
background: linear-gradient(135deg, #36cdda, #365FDA);
Gradient text

Gradient headline

background: linear-gradient(90deg, #36cdda, #3636DA);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #36cdda;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #36cdda;
caret-color: #36cdda;
Left rule
Pull quote or callout
border-left: 4px solid #36cdda;
Ring + tint
Selected chip
background: #E9FAFB;
box-shadow: inset 0 0 0 2px #36cdda;
Conic badge
68%
background: conic-gradient(#36cdda 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #36cdda 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, 205, 218, 0.5)
rgb(54 205 218 / 50%)
#36cdda80
hsl(185 69% 53% / 50%)
color-mix(in srgb, #36cdda 50%, transparent)
Alpha8-digit hexFlat on white
10%#36cdda1a#EBFAFB
20%#36cdda33#D7F5F8
40%#36cdda66#AFEBF0
60%#36cdda99#86E1E9
80%#36cddacc#5ED7E1

Gradients from #36cdda

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, #6ADAE3, #36cdda 45%, #14656C);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #36cdda, #2642CC);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #36cdda, #DA4336);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #83E0E8 0%, #36cdda 45%, #14656C 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%, #61E2A1 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #5080DF 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #14656C 0%, transparent 65%), #36cdda;

Monochromatic scale

Palettes built from #36cdda

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.

#36cdda 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 10.90:1.

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.

#36cdda, answered

What color is #36cdda?

#36cdda is a balanced vivid cyan, closest to Dark Turquoise (ΔE2000 4.1). It sits at 185° on the hue wheel with 69% saturation and 53% lightness, which reads as cool.

What is the RGB value of #36cdda?

rgb(54, 205, 218) — 54 red, 205 green and 218 blue out of 255, or 21.2% / 80.4% / 85.5% by channel.

What is #36cdda in HSL and HSV?

hsl(185, 69%, 53%) and hsv(185, 75%, 85%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #36cdda a light or a dark color?

It is a mid-tone. Relative luminance is 0.4951 and perceived brightness is 69%, so black text on it reaches 10.90:1.

Should I use black or white text on #36cdda?

Black. It scores 10.90:1 against #36cdda, versus 1.93:1 for white — AAA at any size.

Is #36cdda accessible on a white background?

#36cdda on white scores 1.93:1, which fails WCAG AA at every size. Darken it to #1A828B to reach 4.5:1, or #136269 for 7:1.

What is the complementary color of #36cdda?

#DA4336 sits directly opposite on the wheel. Softer options are the split-complements #DA367B and #DA9536, which give the same contrast with far less vibration.

What colors go well with #36cdda?

For interface work: #F4FAFA as the surface, #C0E9ED for borders, #4B949B for secondary text, #DF314F as an accent and #14656C for hover and pressed states. For a palette, the analogous pair #36DA95 and #367BDA stays calm, while #DA4336 is the loudest partner.

What is #36cdda in CMYK for printing?

cmyk(75%, 6%, 0%, 15%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #36cdda warm or cool?

Cool — it scores 89 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #36DAAB; nudged cooler, #33A6DC.

Which Tailwind color is closest to #36cdda?

The cyan family — its 500 step is #06b6d4, ΔE2000 8.2 away. That is a visible difference, so define #36cdda as a custom token rather than reaching for the built-in.

How do I use #36cdda in Tailwind CSS?

Inline it as an arbitrary value with bg-[#36cdda] or text-[#36cdda], 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 #36cdda with 50% opacity?

rgba(54, 205, 218, 0.5), or #36cdda80 in eight-digit hex. Over white that composites to #9BE6ED; over black, #1B676D.

Is #36cdda a web-safe color?

No. The nearest web-safe colour is #33CCCC, ΔE2000 4.6 away. The palette only matters for legacy displays and some email clients now.

What does the color #36cdda 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 #36cdda?

The safest is same-hue elevation: linear-gradient(135deg, #6ADAE3, #36cdda 45%, #14656C). For more colour, a short hue run to #2642CC keeps it rich without turning muddy.

Work with #36cdda in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #36cdda at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.