Skip to content
cyan · cool

#4ebfea

a balanced, electric cyan · cool · closest name: Deep Sky Blue

Token name suggestion: Signal Teal

RGB
78, 191, 234
HSL
197°, 79%, 61%
CMYK
67, 18, 0, 8
Luminance
0.4482

#4ebfea is a balanced electric cyan, 197° on the wheel and 94/100 on the cool side. Put black text on it (9.96:1). As text it scores 2.11:1 on white — use #147DA5 instead. Nearest name is Deep Sky Blue, nearest Tailwind family is cyan.

hsl(197 79% 61%)rgb(78 191 234)Base step 500AAA inkCool

At a glance

Every number on this page in one read: what #4ebfea is made of, how bright it looks, and which way it leans.

Hex
#4ebfea
Hue
197°
cyan
Saturation
79%
electric
Lightness
61%
balanced
Brightness
92%
HSV value
Perceived
67%
weighted brightness
Luminance
0.4482
WCAG relative
Temperature
Cool
94/100 cool
Color family
Cyan
Tone
Electric
Best ink
Black
9.96:1
Closest name
Deep Sky Blue
ΔE2000 4.3
Chroma
36.1
LCH, 0–130ish
OKLCH L
0.757
perceptual lightness
Tailwind
cyan
500 · ΔE 6.4
Web-safe
#66CCFF
nearest of 216
Where it sits
Hue197° of 360°
Saturation79%
Lightness61%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #4ebfea.

Temperature
Warm ← → Cool94% 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
Red4%
Green83%
Blue13%

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

Every format

HEX#4ebfea
HEX (8-digit)#4ebfeaff
RGBrgb(78, 191, 234)
RGBArgba(78, 191, 234, 1)
HSLhsl(197, 79%, 61%)
HSV / HSBhsv(197, 67%, 92%)
HWBhwb(197 31% 8%)
CMYKcmyk(67%, 18%, 0%, 8%)
LABlab(72.8 -18.8 -30.8)
LCHlch(72.8 36.1 238.5)
OKLCHoklch(0.757 0.118 226.8)
XYZ (D65)xyz(36.62, 44.82, 84.55)
Decimal5160938
Display P3color(display-p3 0.306 0.749 0.918)
Web-safe#66CCFF

Copy-ready code

every platformclick to select
/* CSS */
color: #4ebfea;
background-color: #4ebfea;
/* CSS custom property */
--brand: #4ebfea;
/* Tailwind (arbitrary) */
class="text-[#4ebfea] bg-[#4ebfea]"
/* SCSS */
$brand: #4ebfea;
/* SwiftUI */
Color(red: 0.306, green: 0.749, blue: 0.918)
/* UIKit */
UIColor(red: 0.306, green: 0.749, blue: 0.918, alpha: 1)
/* Android XML */
<color name="brand">#4EBFEA</color>
/* Android Compose */
Color(0xFF4EBFEA)
/* Flutter */
Color(0xFF4EBFEA)
/* Python / OpenCV (BGR) */
(234, 191, 78)
/* Python / PIL (RGB) */
(78, 191, 234)
/* Java AWT */
new Color(78, 191, 234)
/* .NET */
Color.FromArgb(255, 78, 191, 234)
/* OpenGL / Unity (0–1) */
(0.3059f, 0.7490f, 0.9176f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{78,191,234}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #4ebfea 85%, white);
border-color: color-mix(in oklab, #4ebfea 40%, transparent);
/* theme-aware in one line */
color: light-dark(#0E5672, #D3E7EE);
/* relative colour syntax */
--hover: hsl(from #4ebfea 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: #F3F9FC;
  --brand-100: #E6F4F9;
  --brand-200: #C7E8F5;
  --brand-300: #9BDBF3;
  --brand-400: #69C9ED;
  --brand-500: #4ebfea;
  --brand-600: #1AA6DB;
  --brand-700: #168AB6;
  --brand-800: #116F92;
  --brand-900: #11516A;
  --brand-950: #0B3342;
  --brand: #4ebfea;
  --brand-ink: #000000;
  --brand-surface: #F4F9FA;
  --brand-border: #C0E0ED;
  --brand-hover: #2EB4E6;
  --brand-pressed: #1AA3D7;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142024;
    --brand-ink: #D3E7EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F3F9FC',
        100: '#E6F4F9',
        200: '#C7E8F5',
        300: '#9BDBF3',
        400: '#69C9ED',
        500: '#4ebfea',
        600: '#1AA6DB',
        700: '#168AB6',
        800: '#116F92',
        900: '#11516A',
        950: '#0B3342',
        DEFAULT: '#4ebfea',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F3F9FC,
  '100': #E6F4F9,
  '200': #C7E8F5,
  '300': #9BDBF3,
  '400': #69C9ED,
  '500': #4ebfea,
  '600': #1AA6DB,
  '700': #168AB6,
  '800': #116F92,
  '900': #11516A,
  '950': #0B3342,
);
$brand-base: #4ebfea;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F3F9FC", "$type": "color" },
      "100": { "$value": "#E6F4F9", "$type": "color" },
      "200": { "$value": "#C7E8F5", "$type": "color" },
      "300": { "$value": "#9BDBF3", "$type": "color" },
      "400": { "$value": "#69C9ED", "$type": "color" },
      "500": { "$value": "#4ebfea", "$type": "color" },
      "600": { "$value": "#1AA6DB", "$type": "color" },
      "700": { "$value": "#168AB6", "$type": "color" },
      "800": { "$value": "#116F92", "$type": "color" },
      "900": { "$value": "#11516A", "$type": "color" },
      "950": { "$value": "#0B3342", "$type": "color" }
    },
    "brandInk": { "$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 #4ebfea · 9.96:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.11:1
AA fail · AA large fail · AAA fail
Aa
Black text · 9.96:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #4ebfea as text scores 2.11:1 on white and 9.96:1 on black.
Best tinted ink on it, if plain black or white feels flat: #0E5672 at 3.84:1.

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
#147DA5 · 4.66:1
AA on white−25% L
#147DA5
The quick fox
#0F5E7C · 7.21:1
AAA on white−34% L
#0F5E7C
The quick fox
#4ebfea · 9.96:1
AA on blackalready passes
#4ebfea
The quick fox
#4ebfea · 9.96:1
AAA on blackalready passes
#4ebfea

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #19A0D3 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
#4ebfea on white: 2.11:1
AA ✗ fail · AA-large · AAA
Aa
#4ebfea on black: 9.96:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #4ebfea as text on that neutral, and that neutral as text on #4ebfea.

NeutralRatioBoth directions
White2.11:1AaAa
Slate 502.01:1AaAa
Slate 1001.92:1AaAa
Slate 2001.71:1AaAa
Slate 3001.42:1AaAa
Slate 4001.22:1AaAa
Slate 5002.26:1AaAa
Slate 6003.60:1AaAa
Slate 7004.91:1AaAa
Slate 8006.94:1AaAa
Slate 9008.47:1AaAa
Black9.96:1AaAa
Colour vision deficiency
true color
protanopia · #A8BCEC
deuteranopia · #92ACE9
tritanopia · #00CBCD

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. #4ebfea 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.

#F3F9FC
#E6F4F9
#C7E8F5
#9BDBF3
#69C9ED
#4ebfea
#1AA6DB
#168AB6
#116F92
#11516A
#0B3342
Base = 500Lightest = 50 · #F3F9FCDarkest = 950 · #0B3342Text 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 0.030 226.8);
  --brand-100: oklch(0.94 0.047 226.8);
  --brand-200: oklch(0.88 0.071 226.8);
  --brand-300: oklch(0.80 0.092 226.8);
  --brand-400: oklch(0.72 0.109 226.8);
  --brand-500: oklch(0.64 0.118 226.8);
  --brand-600: oklch(0.56 0.118 226.8);
  --brand-700: oklch(0.48 0.111 226.8);
  --brand-800: oklch(0.40 0.099 226.8);
  --brand-900: oklch(0.32 0.083 226.8);
  --brand-950: oklch(0.24 0.065 226.8);
}

Colors that work with #4ebfea

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#C0E0ED
Hairlines and dividers
Muted text#4B859B
Captions on the surface
Accent#EE4E4A
Second voice, not a rival
Dark variant#0E5672
Hover, pressed, headers
Light variant#E8F7FC
Selected rows, tints
Dark surface#142024
Dark-mode background
Hover#2EB4E6
One step down in lightness
Pressed#1AA3D7
Two steps down
Disabled#CBD8DE
Chroma pulled out
Focus ring#57CAF5
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 #4ebfea

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 #0E5672
Safe as a 1px border on white
No — use #19A0D3

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 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
  • FormalityLow
  • EnergyHigh
  • Weight39/100
  • 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#EA794E
Analogous left#4EEAC7
Analogous right#4E71EA
Split-complement 1#EA4E71
Split-complement 2#EAC74E
Triadic 1#EA4EBF
Triadic 2#BFEA4E
Tetradic#C74EEA
On the wheel
Base+30°−30°+120°+240°+180°197°

#4ebfea sits at 197°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red30.6%
Green74.9%
Blue91.8%
R · 0–255
78
0x4e
G · 0–255
191
0xbf
B · 0–255
234
0xea

CMYK percentages

Cyan66.7%
Magenta18.4%
Yellow0.0%
Key (black)8.2%

Total ink coverage is 93%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#4ebfea text on a black background

contrast 9.96:1

Card sample

#4ebfea text on a white background

contrast 2.11:1

Card sample

#4ebfea on grey

1.92:1

#4ebfea on its own surface

1.98:1

#4ebfea on its dark surface

7.90:1

CSS3 live lab

Text font color

The quick brown fox

color: #4ebfea;
Background color
Panel with #4ebfea background
background-color: #4ebfea;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #4ebfea;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(78, 191, 234, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(78, 191, 234, 0.45);
Border & gradient
Gradient panel
border: 3px solid #4ebfea;
background: linear-gradient(135deg, #4ebfea, #4E57EA);
Gradient text

Gradient headline

background: linear-gradient(90deg, #4ebfea, #6C4EEA);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #4ebfea;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #4ebfea;
caret-color: #4ebfea;
Left rule
Pull quote or callout
border-left: 4px solid #4ebfea;
Ring + tint
Selected chip
background: #E8F7FC;
box-shadow: inset 0 0 0 2px #4ebfea;
Conic badge
68%
background: conic-gradient(#4ebfea 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #4ebfea 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(78, 191, 234, 0.5)
rgb(78 191 234 / 50%)
#4ebfea80
hsl(197 79% 61% / 50%)
color-mix(in srgb, #4ebfea 50%, transparent)
Alpha8-digit hexFlat on white
10%#4ebfea1a#EDF9FD
20%#4ebfea33#DCF2FB
40%#4ebfea66#B8E5F7
60%#4ebfea99#95D9F2
80%#4ebfeacc#71CCEE

Gradients from #4ebfea

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, #85D3F1, #4ebfea 45%, #0E5672);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #4ebfea, #3733E7);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #4ebfea, #EA794E);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #A0DDF4 0%, #4ebfea 45%, #0E5672 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%, #7CEFCC 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #697CED 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #0E5672 0%, transparent 65%), #4ebfea;

Monochromatic scale

Palettes built from #4ebfea

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.

#4ebfea 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

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 9.96:1.

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.

#4ebfea, answered

What color is #4ebfea?

#4ebfea is a balanced electric cyan, closest to Deep Sky Blue (ΔE2000 4.3). It sits at 197° on the hue wheel with 79% saturation and 61% lightness, which reads as cool.

What is the RGB value of #4ebfea?

rgb(78, 191, 234) — 78 red, 191 green and 234 blue out of 255, or 30.6% / 74.9% / 91.8% by channel.

What is #4ebfea in HSL and HSV?

hsl(197, 79%, 61%) and hsv(197, 67%, 92%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #4ebfea a light or a dark color?

It is a mid-tone. Relative luminance is 0.4482 and perceived brightness is 67%, so black text on it reaches 9.96:1.

Should I use black or white text on #4ebfea?

Black. It scores 9.96:1 against #4ebfea, versus 2.11:1 for white — AAA at any size.

Is #4ebfea accessible on a white background?

#4ebfea on white scores 2.11:1, which fails WCAG AA at every size. Darken it to #147DA5 to reach 4.5:1, or #0F5E7C for 7:1.

What is the complementary color of #4ebfea?

#EA794E sits directly opposite on the wheel. Softer options are the split-complements #EA4E71 and #EAC74E, which give the same contrast with far less vibration.

What colors go well with #4ebfea?

For interface work: #F4F9FA as the surface, #C0E0ED for borders, #4B859B for secondary text, #EE4E4A as an accent and #0E5672 for hover and pressed states. For a palette, the analogous pair #4EEAC7 and #4E71EA stays calm, while #EA794E is the loudest partner.

What is #4ebfea in CMYK for printing?

cmyk(67%, 18%, 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 #4ebfea warm or cool?

Cool — it scores 94 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #4EEADC; nudged cooler, #4CAAEC.

Which Tailwind color is closest to #4ebfea?

The cyan family — its 500 step is #06b6d4, ΔE2000 6.4 away. That is a visible difference, so define #4ebfea as a custom token rather than reaching for the built-in.

How do I use #4ebfea in Tailwind CSS?

Inline it as an arbitrary value with bg-[#4ebfea] or text-[#4ebfea], 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 #4ebfea with 50% opacity?

rgba(78, 191, 234, 0.5), or #4ebfea80 in eight-digit hex. Over white that composites to #A7DFF5; over black, #276075.

Is #4ebfea a web-safe color?

No. The nearest web-safe colour is #66CCFF, ΔE2000 4.6 away. The palette only matters for legacy displays and some email clients now.

What does the color #4ebfea 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 #4ebfea?

The safest is same-hue elevation: linear-gradient(135deg, #85D3F1, #4ebfea 45%, #0E5672). For more colour, a short hue run to #3733E7 keeps it rich without turning muddy.

Work with #4ebfea in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #4ebfea at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.