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cyan · cool

#24afdf

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

Token name suggestion: Atlas Teal

RGB
36, 175, 223
HSL
195°, 75%, 51%
CMYK
84, 22, 0, 13
Luminance
0.3636

#24afdf is a balanced vivid cyan, 195° on the wheel and 94/100 on the cool side. Put black text on it (8.27:1). As text it scores 2.54:1 on white — use #1880A4 instead. Nearest name is Deep Sky Blue, nearest Tailwind family is sky.

hsl(195 75% 51%)rgb(36 175 223)Base step 600AAA inkCool

At a glance

Every number on this page in one read: what #24afdf is made of, how bright it looks, and which way it leans.

Hex
#24afdf
Hue
195°
cyan
Saturation
75%
vivid
Lightness
51%
balanced
Brightness
87%
HSV value
Perceived
61%
weighted brightness
Luminance
0.3636
WCAG relative
Temperature
Cool
94/100 cool
Color family
Cyan
Tone
Vivid
Best ink
Black
8.27:1
Closest name
Deep Sky Blue
ΔE2000 5.4
Chroma
38.9
LCH, 0–130ish
OKLCH L
0.706
perceptual lightness
Tailwind
sky
500 · ΔE 5.9
Web-safe
#3399CC
nearest of 216
Where it sits
Hue195° of 360°
Saturation75%
Lightness51%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #24afdf.

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
Red1%
Green84%
Blue15%

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

Every format

HEX#24afdf
HEX (8-digit)#24afdfff
RGBrgb(36, 175, 223)
RGBArgba(36, 175, 223, 1)
HSLhsl(195, 75%, 51%)
HSV / HSBhsv(195, 84%, 87%)
HWBhwb(195 14% 13%)
CMYKcmyk(84%, 22%, 0%, 13%)
LABlab(66.8 -18.8 -34.1)
LCHlch(66.8 38.9 241.1)
OKLCHoklch(0.706 0.130 227.8)
XYZ (D65)xyz(29.37, 36.36, 75.27)
Decimal2404319
Display P3color(display-p3 0.141 0.686 0.875)
Web-safe#3399CC

Copy-ready code

every platformclick to select
/* CSS */
color: #24afdf;
background-color: #24afdf;
/* CSS custom property */
--brand: #24afdf;
/* Tailwind (arbitrary) */
class="text-[#24afdf] bg-[#24afdf]"
/* SCSS */
$brand: #24afdf;
/* SwiftUI */
Color(red: 0.141, green: 0.686, blue: 0.875)
/* UIKit */
UIColor(red: 0.141, green: 0.686, blue: 0.875, alpha: 1)
/* Android XML */
<color name="brand">#24AFDF</color>
/* Android Compose */
Color(0xFF24AFDF)
/* Flutter */
Color(0xFF24AFDF)
/* Python / OpenCV (BGR) */
(223, 175, 36)
/* Python / PIL (RGB) */
(36, 175, 223)
/* Java AWT */
new Color(36, 175, 223)
/* .NET */
Color.FromArgb(255, 36, 175, 223)
/* OpenGL / Unity (0–1) */
(0.1412f, 0.6863f, 0.8745f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{36,175,223}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #24afdf 85%, white);
border-color: color-mix(in oklab, #24afdf 40%, transparent);
/* theme-aware in one line */
color: light-dark(#10576F, #D3E7EE);
/* relative colour syntax */
--hover: hsl(from #24afdf 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: #E7F4F9;
  --brand-200: #C8E8F4;
  --brand-300: #9DDBF1;
  --brand-400: #6CC9EA;
  --brand-500: #3BB7E2;
  --brand-600: #24afdf;
  --brand-700: #1A8BB2;
  --brand-800: #156F8E;
  --brand-900: #135267;
  --brand-950: #0C3340;
  --brand: #24afdf;
  --brand-ink: #000000;
  --brand-surface: #F4F9FA;
  --brand-border: #C0E1ED;
  --brand-hover: #1C98C3;
  --brand-pressed: #1880A4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142024;
    --brand-ink: #D3E7EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F3FAFC',
        100: '#E7F4F9',
        200: '#C8E8F4',
        300: '#9DDBF1',
        400: '#6CC9EA',
        500: '#3BB7E2',
        600: '#24afdf',
        700: '#1A8BB2',
        800: '#156F8E',
        900: '#135267',
        950: '#0C3340',
        DEFAULT: '#24afdf',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F3FAFC,
  '100': #E7F4F9,
  '200': #C8E8F4,
  '300': #9DDBF1,
  '400': #6CC9EA,
  '500': #3BB7E2,
  '600': #24afdf,
  '700': #1A8BB2,
  '800': #156F8E,
  '900': #135267,
  '950': #0C3340,
);
$brand-base: #24afdf;
$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": "#E7F4F9", "$type": "color" },
      "200": { "$value": "#C8E8F4", "$type": "color" },
      "300": { "$value": "#9DDBF1", "$type": "color" },
      "400": { "$value": "#6CC9EA", "$type": "color" },
      "500": { "$value": "#3BB7E2", "$type": "color" },
      "600": { "$value": "#24afdf", "$type": "color" },
      "700": { "$value": "#1A8BB2", "$type": "color" },
      "800": { "$value": "#156F8E", "$type": "color" },
      "900": { "$value": "#135267", "$type": "color" },
      "950": { "$value": "#0C3340", "$type": "color" }
    },
    "brandInk": { "$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 #24afdf · 8.27:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.54:1
AA fail · AA large fail · AAA fail
Aa
Black text · 8.27:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #24afdf as text scores 2.54:1 on white and 8.27:1 on black.
Best tinted ink on it, if plain black or white feels flat: #10576F at 3.16:1.

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
#1880A4 · 4.50:1
AA on white−14% L
#1880A4
The quick fox
#115D77 · 7.35:1
AAA on white−24% L
#115D77
The quick fox
#24afdf · 8.27:1
AA on blackalready passes
#24afdf
The quick fox
#24afdf · 8.27:1
AAA on blackalready passes
#24afdf

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #1E9FCC 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
#24afdf on white: 2.54:1
AA ✗ fail · AA-large · AAA
Aa
#24afdf on black: 8.27:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #24afdf as text on that neutral, and that neutral as text on #24afdf.

NeutralRatioBoth directions
White2.54:1AaAa
Slate 502.43:1AaAa
Slate 1002.32:1AaAa
Slate 2002.06:1AaAa
Slate 3001.71:1AaAa
Slate 4001.01:1AaAa
Slate 5001.87:1AaAa
Slate 6002.99:1AaAa
Slate 7004.08:1AaAa
Slate 8005.76:1AaAa
Slate 9007.03:1AaAa
Black8.27:1AaAa
Colour vision deficiency
true color
protanopia · #95ACE1
deuteranopia · #7E9BDE
tritanopia · #00BDBF

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. #24afdf is pinned to step 600; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F3FAFC
#E7F4F9
#C8E8F4
#9DDBF1
#6CC9EA
#3BB7E2
#24afdf
#1A8BB2
#156F8E
#135267
#0C3340
Base = 600Lightest = 50 · #F3FAFCDarkest = 950 · #0C3340Text 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 0.032 227.8);
  --brand-100: oklch(0.94 0.052 227.8);
  --brand-200: oklch(0.88 0.078 227.8);
  --brand-300: oklch(0.80 0.101 227.8);
  --brand-400: oklch(0.72 0.119 227.8);
  --brand-500: oklch(0.64 0.130 227.8);
  --brand-600: oklch(0.56 0.130 227.8);
  --brand-700: oklch(0.48 0.122 227.8);
  --brand-800: oklch(0.40 0.109 227.8);
  --brand-900: oklch(0.32 0.091 227.8);
  --brand-950: oklch(0.24 0.071 227.8);
}

Colors that work with #24afdf

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#C0E1ED
Hairlines and dividers
Muted text#4B869B
Captions on the surface
Accent#E4201F
Second voice, not a rival
Dark variant#10576F
Hover, pressed, headers
Light variant#E9F7FC
Selected rows, tints
Dark surface#142024
Dark-mode background
Hover#1C98C3
One step down in lightness
Pressed#1880A4
Two steps down
Disabled#AAC1C9
Chroma pulled out
Focus ring#2ABBED
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 #24afdf

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 #10576F
Safe as a 1px border on white
No — use #1E9FCC

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
  • Weight49/100
  • 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#DF5424
Analogous left#24DFB2
Analogous right#2452DF
Split-complement 1#DF2452
Split-complement 2#DFB224
Triadic 1#DF24AF
Triadic 2#AFDF24
Tetradic#B224DF
On the wheel
Base+30°−30°+120°+240°+180°195°

#24afdf sits at 195°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red14.1%
Green68.6%
Blue87.5%
R · 0–255
36
0x24
G · 0–255
175
0xaf
B · 0–255
223
0xdf

CMYK percentages

Cyan83.9%
Magenta21.5%
Yellow0.0%
Key (black)12.5%

Total ink coverage is 118%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#24afdf text on a black background

contrast 8.27:1

Card sample

#24afdf text on a white background

contrast 2.54:1

Card sample

#24afdf on grey

2.32:1

#24afdf on its own surface

2.39:1

#24afdf on its dark surface

6.56:1

CSS3 live lab

Text font color

The quick brown fox

color: #24afdf;
Background color
Panel with #24afdf background
background-color: #24afdf;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #24afdf;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(36, 175, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(36, 175, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #24afdf;
background: linear-gradient(135deg, #24afdf, #2432DF);
Gradient text

Gradient headline

background: linear-gradient(90deg, #24afdf, #4424DF);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #24afdf;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #24afdf;
caret-color: #24afdf;
Left rule
Pull quote or callout
border-left: 4px solid #24afdf;
Ring + tint
Selected chip
background: #E9F7FC;
box-shadow: inset 0 0 0 2px #24afdf;
Conic badge
68%
background: conic-gradient(#24afdf 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #24afdf 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(36, 175, 223, 0.5)
rgb(36 175 223 / 50%)
#24afdf80
hsl(195 75% 51% / 50%)
color-mix(in srgb, #24afdf 50%, transparent)
Alpha8-digit hexFlat on white
10%#24afdf1a#E9F7FC
20%#24afdf33#D3EFF9
40%#24afdf66#A7DFF2
60%#24afdf99#7CCFEC
80%#24afdfcc#50BFE5

Gradients from #24afdf

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, #59C3E7, #24afdf 45%, #10576F);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #24afdf, #1E1DC7);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #24afdf, #DF5424);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #74CCEB 0%, #24afdf 45%, #10576F 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%, #51E6B5 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #3F59E3 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #10576F 0%, transparent 65%), #24afdf;

Monochromatic scale

Palettes built from #24afdf

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.

#24afdf 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 8.27:1.

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.

#24afdf, answered

What color is #24afdf?

#24afdf is a balanced vivid cyan, closest to Deep Sky Blue (ΔE2000 5.4). It sits at 195° on the hue wheel with 75% saturation and 51% lightness, which reads as cool.

What is the RGB value of #24afdf?

rgb(36, 175, 223) — 36 red, 175 green and 223 blue out of 255, or 14.1% / 68.6% / 87.5% by channel.

What is #24afdf in HSL and HSV?

hsl(195, 75%, 51%) and hsv(195, 84%, 87%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #24afdf a light or a dark color?

It is a mid-tone. Relative luminance is 0.3636 and perceived brightness is 61%, so black text on it reaches 8.27:1.

Should I use black or white text on #24afdf?

Black. It scores 8.27:1 against #24afdf, versus 2.54:1 for white — AAA at any size.

Is #24afdf accessible on a white background?

#24afdf on white scores 2.54:1, which fails WCAG AA at every size. Darken it to #1880A4 to reach 4.5:1, or #115D77 for 7:1.

What is the complementary color of #24afdf?

#DF5424 sits directly opposite on the wheel. Softer options are the split-complements #DF2452 and #DFB224, which give the same contrast with far less vibration.

What colors go well with #24afdf?

For interface work: #F4F9FA as the surface, #C0E1ED for borders, #4B869B for secondary text, #E4201F as an accent and #10576F for hover and pressed states. For a palette, the analogous pair #24DFB2 and #2452DF stays calm, while #DF5424 is the loudest partner.

What is #24afdf in CMYK for printing?

cmyk(84%, 22%, 0%, 13%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #24afdf 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 #24DFCA; nudged cooler, #2296E2.

Which Tailwind color is closest to #24afdf?

The sky family — its 500 step is #0ea5e9, ΔE2000 5.9 away. That is a visible difference, so define #24afdf as a custom token rather than reaching for the built-in.

How do I use #24afdf in Tailwind CSS?

Inline it as an arbitrary value with bg-[#24afdf] or text-[#24afdf], 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 #24afdf with 50% opacity?

rgba(36, 175, 223, 0.5), or #24afdf80 in eight-digit hex. Over white that composites to #92D7EF; over black, #125870.

Is #24afdf a web-safe color?

No. The nearest web-safe colour is #3399CC, ΔE2000 7.1 away. The palette only matters for legacy displays and some email clients now.

What does the color #24afdf 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 #24afdf?

The safest is same-hue elevation: linear-gradient(135deg, #59C3E7, #24afdf 45%, #10576F). For more colour, a short hue run to #1E1DC7 keeps it rich without turning muddy.

Work with #24afdf in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #24afdf at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.