Skip to content
cyan · cool

#65cdec

a light, electric cyan · cool · closest name: Sky Blue

Token name suggestion: Morning Glacier

RGB
101, 205, 236
HSL
194°, 78%, 66%
CMYK
57, 13, 0, 8
Luminance
0.5249

#65cdec is a light electric cyan, 194° on the wheel and 93/100 on the cool side. Put black text on it (11.50:1). As text it scores 1.83:1 on white — use #147F9F instead. Nearest name is Sky Blue, nearest Tailwind family is cyan.

hsl(194 78% 66%)rgb(101 205 236)Base step 400AAA inkCool

At a glance

Every number on this page in one read: what #65cdec is made of, how bright it looks, and which way it leans.

Hex
#65cdec
Hue
194°
cyan
Saturation
78%
electric
Lightness
66%
light
Brightness
93%
HSV value
Perceived
72%
weighted brightness
Luminance
0.5249
WCAG relative
Temperature
Cool
93/100 cool
Color family
Cyan
Tone
Electric
Best ink
Black
11.50:1
Closest name
Sky Blue
ΔE2000 3.8
Chroma
32.5
LCH, 0–130ish
OKLCH L
0.798
perceptual lightness
Tailwind
cyan
500 · ΔE 7.6
Web-safe
#66CCFF
nearest of 216
Where it sits
Hue194° of 360°
Saturation78%
Lightness66%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #65cdec.

Temperature
Warm ← → Cool93% 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
Red5%
Green83%
Blue12%

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

Every format

HEX#65cdec
HEX (8-digit)#65cdecff
RGBrgb(101, 205, 236)
RGBArgba(101, 205, 236, 1)
HSLhsl(194, 78%, 66%)
HSV / HSBhsv(194, 57%, 93%)
HWBhwb(194 40% 7%)
CMYKcmyk(57%, 13%, 0%, 8%)
LABlab(77.6 -21.5 -24.4)
LCHlch(77.6 32.5 228.7)
OKLCHoklch(0.798 0.105 220.0)
XYZ (D65)xyz(42.33, 52.48, 87.24)
Decimal6671852
Display P3color(display-p3 0.396 0.804 0.925)
Web-safe#66CCFF

Copy-ready code

every platformclick to select
/* CSS */
color: #65cdec;
background-color: #65cdec;
/* CSS custom property */
--brand: #65cdec;
/* Tailwind (arbitrary) */
class="text-[#65cdec] bg-[#65cdec]"
/* SCSS */
$brand: #65cdec;
/* SwiftUI */
Color(red: 0.396, green: 0.804, blue: 0.925)
/* UIKit */
UIColor(red: 0.396, green: 0.804, blue: 0.925, alpha: 1)
/* Android XML */
<color name="brand">#65CDEC</color>
/* Android Compose */
Color(0xFF65CDEC)
/* Flutter */
Color(0xFF65CDEC)
/* Python / OpenCV (BGR) */
(236, 205, 101)
/* Python / PIL (RGB) */
(101, 205, 236)
/* Java AWT */
new Color(101, 205, 236)
/* .NET */
Color.FromArgb(255, 101, 205, 236)
/* OpenGL / Unity (0–1) */
(0.3961f, 0.8039f, 0.9255f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{101,205,236}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #65cdec 85%, white);
border-color: color-mix(in oklab, #65cdec 40%, transparent);
/* theme-aware in one line */
color: light-dark(#0E5B71, #D3E8EE);
/* relative colour syntax */
--hover: hsl(from #65cdec 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: #F3FAFC;
  --brand-100: #E6F5F9;
  --brand-200: #C7EAF5;
  --brand-300: #9BDFF3;
  --brand-400: #65cdec;
  --brand-500: #37BEE6;
  --brand-600: #1BAEDA;
  --brand-700: #1691B6;
  --brand-800: #127491;
  --brand-900: #115569;
  --brand-950: #0B3542;
  --brand: #65cdec;
  --brand-ink: #000000;
  --brand-surface: #F4F9FA;
  --brand-border: #C0E2ED;
  --brand-hover: #45C3E8;
  --brand-pressed: #26B8E4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142124;
    --brand-ink: #D3E8EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F3FAFC',
        100: '#E6F5F9',
        200: '#C7EAF5',
        300: '#9BDFF3',
        400: '#65cdec',
        500: '#37BEE6',
        600: '#1BAEDA',
        700: '#1691B6',
        800: '#127491',
        900: '#115569',
        950: '#0B3542',
        DEFAULT: '#65cdec',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F3FAFC,
  '100': #E6F5F9,
  '200': #C7EAF5,
  '300': #9BDFF3,
  '400': #65cdec,
  '500': #37BEE6,
  '600': #1BAEDA,
  '700': #1691B6,
  '800': #127491,
  '900': #115569,
  '950': #0B3542,
);
$brand-base: #65cdec;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F3FAFC", "$type": "color" },
      "100": { "$value": "#E6F5F9", "$type": "color" },
      "200": { "$value": "#C7EAF5", "$type": "color" },
      "300": { "$value": "#9BDFF3", "$type": "color" },
      "400": { "$value": "#65cdec", "$type": "color" },
      "500": { "$value": "#37BEE6", "$type": "color" },
      "600": { "$value": "#1BAEDA", "$type": "color" },
      "700": { "$value": "#1691B6", "$type": "color" },
      "800": { "$value": "#127491", "$type": "color" },
      "900": { "$value": "#115569", "$type": "color" },
      "950": { "$value": "#0B3542", "$type": "color" }
    },
    "brandInk": { "$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 #65cdec · 11.50:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.83:1
AA fail · AA large fail · AAA fail
Aa
Black text · 11.50:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #65cdec as text scores 1.83:1 on white and 11.50:1 on black.
Best tinted ink on it, if plain black or white feels flat: #0E5B71 at 4.18:1.

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
#147F9F · 4.60:1
AA on white−31% L
#147F9F
The quick fox
#0F5F76 · 7.19:1
AAA on white−40% L
#0F5F76
The quick fox
#65cdec · 11.50:1
AA on blackalready passes
#65cdec
The quick fox
#65cdec · 11.50:1
AAA on blackalready passes
#65cdec

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #19A0C8 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
#65cdec on white: 1.83:1
AA ✗ fail · AA-large · AAA
Aa
#65cdec on black: 11.50:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #65cdec as text on that neutral, and that neutral as text on #65cdec.

NeutralRatioBoth directions
White1.83:1AaAa
Slate 501.75:1AaAa
Slate 1001.67:1AaAa
Slate 2001.48:1AaAa
Slate 3001.23:1AaAa
Slate 4001.40:1AaAa
Slate 5002.61:1AaAa
Slate 6004.15:1AaAa
Slate 7005.67:1AaAa
Slate 8008.01:1AaAa
Slate 9009.77:1AaAa
Black11.50:1AaAa
Colour vision deficiency
true color
protanopia · #BAC8EE
deuteranopia · #A6B9EC
tritanopia · #00D7D7

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. #65cdec is pinned to step 400; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F3FAFC
#E6F5F9
#C7EAF5
#9BDFF3
#65cdec
#37BEE6
#1BAEDA
#1691B6
#127491
#115569
#0B3542
Base = 400Lightest = 50 · #F3FAFCDarkest = 950 · #0B3542Text 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 0.026 220.0);
  --brand-100: oklch(0.94 0.042 220.0);
  --brand-200: oklch(0.88 0.063 220.0);
  --brand-300: oklch(0.80 0.082 220.0);
  --brand-400: oklch(0.72 0.097 220.0);
  --brand-500: oklch(0.64 0.105 220.0);
  --brand-600: oklch(0.56 0.105 220.0);
  --brand-700: oklch(0.48 0.099 220.0);
  --brand-800: oklch(0.40 0.089 220.0);
  --brand-900: oklch(0.32 0.074 220.0);
  --brand-950: oklch(0.24 0.058 220.0);
}

Colors that work with #65cdec

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#F4F9FA
Tinted page background
Border#C0E2ED
Hairlines and dividers
Muted text#4B889B
Captions on the surface
Accent#B91316
Second voice, not a rival
Dark variant#0E5B71
Hover, pressed, headers
Light variant#E8F8FC
Selected rows, tints
Dark surface#142124
Dark-mode background
Hover#45C3E8
One step down in lightness
Pressed#26B8E4
Two steps down
Disabled#DAE4E7
Chroma pulled out
Focus ring#70D7F6
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 #65cdec

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
  • Card and section backgrounds
  • Brand accents, badges and data highlights
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • White 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
Not as text
Safe as a fill behind white type
No — use #0E5B71
Safe as a 1px border on white
No — use #19A0C8

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.

At this chroma the association is amplified — it will dominate anything placed beside it, so give it space and use it sparingly. The lightness keeps it airy and approachable.

Worth knowing

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

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight34/100
  • 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#EC8465
Analogous left#65ECC8
Analogous right#658AEC
Split-complement 1#EC658A
Split-complement 2#ECC865
Triadic 1#EC65CD
Triadic 2#CDEC65
Tetradic#C865EC
On the wheel
Base+30°−30°+120°+240°+180°194°

#65cdec sits at 194°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red39.6%
Green80.4%
Blue92.5%
R · 0–255
101
0x65
G · 0–255
205
0xcd
B · 0–255
236
0xec

CMYK percentages

Cyan57.2%
Magenta13.1%
Yellow0.0%
Key (black)7.5%

Total ink coverage is 78%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#65cdec text on a black background

contrast 11.50:1

Card sample

#65cdec text on a white background

contrast 1.83:1

Card sample

#65cdec on grey

1.67:1

#65cdec on its own surface

1.72:1

#65cdec on its dark surface

9.03:1

CSS3 live lab

Text font color

The quick brown fox

color: #65cdec;
Background color
Panel with #65cdec background
background-color: #65cdec;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #65cdec;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(101, 205, 236, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(101, 205, 236, 0.45);
Border & gradient
Gradient panel
border: 3px solid #65cdec;
background: linear-gradient(135deg, #65cdec, #6573EC);
Gradient text

Gradient headline

background: linear-gradient(90deg, #65cdec, #7965EC);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #65cdec;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #65cdec;
caret-color: #65cdec;
Left rule
Pull quote or callout
border-left: 4px solid #65cdec;
Ring + tint
Selected chip
background: #E8F8FC;
box-shadow: inset 0 0 0 2px #65cdec;
Conic badge
68%
background: conic-gradient(#65cdec 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #65cdec 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(101, 205, 236, 0.5)
rgb(101 205 236 / 50%)
#65cdec80
hsl(194 78% 66% / 50%)
color-mix(in srgb, #65cdec 50%, transparent)
Alpha8-digit hexFlat on white
10%#65cdec1a#F0FAFD
20%#65cdec33#E0F5FB
40%#65cdec66#C1EBF7
60%#65cdec99#A3E1F4
80%#65cdeccc#84D7F0

Gradients from #65cdec

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, #9CDFF3, #65cdec 45%, #0E5B71);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #65cdec, #4A4DE9);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #65cdec, #EC8465);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #B7E8F6 0%, #65cdec 45%, #0E5B71 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F9FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #93F2D0 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #8095EF 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #0E5B71 0%, transparent 65%), #65cdec;

Monochromatic scale

Palettes built from #65cdec

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.

#65cdec 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
SurfacesBadgesHighlightsEmpty states
Print note

Sits outside most CMYK gamuts — expect a duller press result, or specify a spot ink.

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 11.50:1.

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.

#65cdec, answered

What color is #65cdec?

#65cdec is a light electric cyan, closest to Sky Blue (ΔE2000 3.8). It sits at 194° on the hue wheel with 78% saturation and 66% lightness, which reads as cool.

What is the RGB value of #65cdec?

rgb(101, 205, 236) — 101 red, 205 green and 236 blue out of 255, or 39.6% / 80.4% / 92.5% by channel.

What is #65cdec in HSL and HSV?

hsl(194, 78%, 66%) and hsv(194, 57%, 93%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #65cdec a light or a dark color?

It is a light color. Relative luminance is 0.5249 and perceived brightness is 72%, so black text on it reaches 11.50:1.

Should I use black or white text on #65cdec?

Black. It scores 11.50:1 against #65cdec, versus 1.83:1 for white — AAA at any size.

Is #65cdec accessible on a white background?

#65cdec on white scores 1.83:1, which fails WCAG AA at every size. Darken it to #147F9F to reach 4.5:1, or #0F5F76 for 7:1.

What is the complementary color of #65cdec?

#EC8465 sits directly opposite on the wheel. Softer options are the split-complements #EC658A and #ECC865, which give the same contrast with far less vibration.

What colors go well with #65cdec?

For interface work: #F4F9FA as the surface, #C0E2ED for borders, #4B889B for secondary text, #B91316 as an accent and #0E5B71 for hover and pressed states. For a palette, the analogous pair #65ECC8 and #658AEC stays calm, while #EC8465 is the loudest partner.

What is #65cdec in CMYK for printing?

cmyk(57%, 13%, 0%, 8%). This is a screen-to-ink approximation — a color this saturated sits outside most CMYK gamuts and will print duller than it looks here.

Is #65cdec warm or cool?

Cool — it scores 93 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #65ECDA; nudged cooler, #63B6EE.

Which Tailwind color is closest to #65cdec?

The cyan family — its 500 step is #06b6d4, ΔE2000 7.6 away. That is a visible difference, so define #65cdec as a custom token rather than reaching for the built-in.

How do I use #65cdec in Tailwind CSS?

Inline it as an arbitrary value with bg-[#65cdec] or text-[#65cdec], 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 #65cdec with 50% opacity?

rgba(101, 205, 236, 0.5), or #65cdec80 in eight-digit hex. Over white that composites to #B2E6F6; over black, #336776.

Is #65cdec a web-safe color?

No. The nearest web-safe colour is #66CCFF, ΔE2000 5.9 away. The palette only matters for legacy displays and some email clients now.

What does the color #65cdec 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 #65cdec?

The safest is same-hue elevation: linear-gradient(135deg, #9CDFF3, #65cdec 45%, #0E5B71). For more colour, a short hue run to #4A4DE9 keeps it rich without turning muddy.

Work with #65cdec in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #65cdec at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.