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cyan · cool

#17f0eb

a balanced, electric cyan · cool · closest name: Cyan

Token name suggestion: Atlas Lagoon

RGB
23, 240, 235
HSL
179°, 88%, 52%
CMYK
90, 0, 2, 6
Luminance
0.6850

#17f0eb is a balanced electric cyan, 179° on the wheel and 87/100 on the cool side. Put black text on it (14.70:1). As text it scores 1.43:1 on white — use #098481 instead. Nearest name is Cyan, nearest Tailwind family is teal.

hsl(179 88% 52%)rgb(23 240 235)Base step 600AAA inkCool

At a glance

Every number on this page in one read: what #17f0eb is made of, how bright it looks, and which way it leans.

Hex
#17f0eb
Hue
179°
cyan
Saturation
88%
electric
Lightness
52%
balanced
Brightness
94%
HSV value
Perceived
79%
weighted brightness
Luminance
0.6850
WCAG relative
Temperature
Cool
87/100 cool
Color family
Cyan
Tone
Electric
Best ink
Black
14.70:1
Closest name
Cyan
ΔE2000 3.5
Chroma
48.0
LCH, 0–130ish
OKLCH L
0.864
perceptual lightness
Tailwind
teal
500 · ΔE 14.6
Web-safe
#00FFFF
nearest of 216
Where it sits
Hue179° of 360°
Saturation88%
Lightness52%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #17f0eb.

Temperature
Warm ← → Cool87% 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
Red0%
Green91%
Blue9%

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

Every format

HEX#17f0eb
HEX (8-digit)#17f0ebff
RGBrgb(23, 240, 235)
RGBArgba(23, 240, 235, 1)
HSLhsl(179, 88%, 52%)
HSV / HSBhsv(179, 90%, 94%)
HWBhwb(179 9% 6%)
CMYKcmyk(90%, 0%, 2%, 6%)
LABlab(86.3 -46.8 -10.9)
LCHlch(86.3 48.0 193.2)
OKLCHoklch(0.864 0.146 192.1)
XYZ (D65)xyz(46.50, 68.49, 89.35)
Decimal1569003
Display P3color(display-p3 0.090 0.941 0.922)
Web-safe#00FFFF

Copy-ready code

every platformclick to select
/* CSS */
color: #17f0eb;
background-color: #17f0eb;
/* CSS custom property */
--brand: #17f0eb;
/* Tailwind (arbitrary) */
class="text-[#17f0eb] bg-[#17f0eb]"
/* SCSS */
$brand: #17f0eb;
/* SwiftUI */
Color(red: 0.090, green: 0.941, blue: 0.922)
/* UIKit */
UIColor(red: 0.090, green: 0.941, blue: 0.922, alpha: 1)
/* Android XML */
<color name="brand">#17F0EB</color>
/* Android Compose */
Color(0xFF17F0EB)
/* Flutter */
Color(0xFF17F0EB)
/* Python / OpenCV (BGR) */
(235, 240, 23)
/* Python / PIL (RGB) */
(23, 240, 235)
/* Java AWT */
new Color(23, 240, 235)
/* .NET */
Color.FromArgb(255, 23, 240, 235)
/* OpenGL / Unity (0–1) */
(0.0902f, 0.9412f, 0.9216f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{23,240,235}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #17f0eb 85%, white);
border-color: color-mix(in oklab, #17f0eb 40%, transparent);
/* theme-aware in one line */
color: light-dark(#087875, #D3EEEE);
/* relative colour syntax */
--hover: hsl(from #17f0eb 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: #F2FDFC;
  --brand-100: #E5FAFA;
  --brand-200: #C4F8F6;
  --brand-300: #96F8F6;
  --brand-400: #61F5F1;
  --brand-500: #2CF1ED;
  --brand-600: #17f0eb;
  --brand-700: #0CC0BB;
  --brand-800: #0A9996;
  --brand-900: #0C6F6C;
  --brand-950: #074544;
  --brand: #17f0eb;
  --brand-ink: #000000;
  --brand-surface: #F4FAFA;
  --brand-border: #C0EDEC;
  --brand-hover: #0ED6D1;
  --brand-pressed: #0CB4B0;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142424;
    --brand-ink: #D3EEEE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F2FDFC',
        100: '#E5FAFA',
        200: '#C4F8F6',
        300: '#96F8F6',
        400: '#61F5F1',
        500: '#2CF1ED',
        600: '#17f0eb',
        700: '#0CC0BB',
        800: '#0A9996',
        900: '#0C6F6C',
        950: '#074544',
        DEFAULT: '#17f0eb',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2FDFC,
  '100': #E5FAFA,
  '200': #C4F8F6,
  '300': #96F8F6,
  '400': #61F5F1,
  '500': #2CF1ED,
  '600': #17f0eb,
  '700': #0CC0BB,
  '800': #0A9996,
  '900': #0C6F6C,
  '950': #074544,
);
$brand-base: #17f0eb;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F2FDFC", "$type": "color" },
      "100": { "$value": "#E5FAFA", "$type": "color" },
      "200": { "$value": "#C4F8F6", "$type": "color" },
      "300": { "$value": "#96F8F6", "$type": "color" },
      "400": { "$value": "#61F5F1", "$type": "color" },
      "500": { "$value": "#2CF1ED", "$type": "color" },
      "600": { "$value": "#17f0eb", "$type": "color" },
      "700": { "$value": "#0CC0BB", "$type": "color" },
      "800": { "$value": "#0A9996", "$type": "color" },
      "900": { "$value": "#0C6F6C", "$type": "color" },
      "950": { "$value": "#074544", "$type": "color" }
    },
    "brandInk": { "$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 #17f0eb · 14.70:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.43:1
AA fail · AA large fail · AAA fail
Aa
Black text · 14.70:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #17f0eb as text scores 1.43:1 on white and 14.70:1 on black.
Best tinted ink on it, if plain black or white feels flat: #087875 at 3.72:1.

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
#098481 · 4.54:1
AA on white−24% L
#098481
The quick fox
#066361 · 7.08:1
AAA on white−31% L
#066361
The quick fox
#17f0eb · 14.70:1
AA on blackalready passes
#17f0eb
The quick fox
#17f0eb · 14.70:1
AAA on blackalready passes
#17f0eb

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #0BA6A2 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
#17f0eb on white: 1.43:1
AA ✗ fail · AA-large · AAA
Aa
#17f0eb on black: 14.70:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #17f0eb as text on that neutral, and that neutral as text on #17f0eb.

NeutralRatioBoth directions
White1.43:1AaAa
Slate 501.37:1AaAa
Slate 1001.30:1AaAa
Slate 2001.16:1AaAa
Slate 3001.04:1AaAa
Slate 4001.79:1AaAa
Slate 5003.33:1AaAa
Slate 6005.30:1AaAa
Slate 7007.25:1AaAa
Slate 80010.24:1AaAa
Slate 90012.50:1AaAa
Black14.70:1AaAa
Colour vision deficiency
true color
protanopia · #E0E3EB
deuteranopia · #C6D0EC
tritanopia · #00F7EE

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. #17f0eb 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.

#F2FDFC
#E5FAFA
#C4F8F6
#96F8F6
#61F5F1
#2CF1ED
#17f0eb
#0CC0BB
#0A9996
#0C6F6C
#074544
Base = 600Lightest = 50 · #F2FDFCDarkest = 950 · #074544Text step on white = 900
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 0.037 192.1);
  --brand-100: oklch(0.94 0.058 192.1);
  --brand-200: oklch(0.88 0.088 192.1);
  --brand-300: oklch(0.80 0.114 192.1);
  --brand-400: oklch(0.72 0.135 192.1);
  --brand-500: oklch(0.64 0.146 192.1);
  --brand-600: oklch(0.56 0.146 192.1);
  --brand-700: oklch(0.48 0.137 192.1);
  --brand-800: oklch(0.40 0.123 192.1);
  --brand-900: oklch(0.32 0.102 192.1);
  --brand-950: oklch(0.24 0.080 192.1);
}

Colors that work with #17f0eb

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#C0EDEC
Hairlines and dividers
Muted text#4B9B99
Captions on the surface
Accent#F51250
Second voice, not a rival
Dark variant#087875
Hover, pressed, headers
Light variant#E7FDFD
Selected rows, tints
Dark surface#142424
Dark-mode background
Hover#0ED6D1
One step down in lightness
Pressed#0CB4B0
Two steps down
Disabled#ADCACA
Chroma pulled out
Focus ring#1FFDF7
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 #17f0eb

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 #087875
Safe as a 1px border on white
No — use #0BA6A2

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
  • Weight48/100
  • 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#F0171C
Analogous left#17F07F
Analogous right#1789F0
Split-complement 1#F01789
Split-complement 2#F07F17
Triadic 1#EB17F0
Triadic 2#F0EB17
Tetradic#7F17F0
On the wheel
Base+30°−30°+120°+240°+180°179°

#17f0eb sits at 179°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red9.0%
Green94.1%
Blue92.2%
R · 0–255
23
0x17
G · 0–255
240
0xf0
B · 0–255
235
0xeb

CMYK percentages

Cyan90.4%
Magenta0.0%
Yellow2.1%
Key (black)5.9%

Total ink coverage is 98%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#17f0eb text on a black background

contrast 14.70:1

Card sample

#17f0eb text on a white background

contrast 1.43:1

Card sample

#17f0eb on grey

1.30:1

#17f0eb on its own surface

1.35:1

#17f0eb on its dark surface

11.24:1

CSS3 live lab

Text font color

The quick brown fox

color: #17f0eb;
Background color
Panel with #17f0eb background
background-color: #17f0eb;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #17f0eb;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(23, 240, 235, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(23, 240, 235, 0.45);
Border & gradient
Gradient panel
border: 3px solid #17f0eb;
background: linear-gradient(135deg, #17f0eb, #1764F0);
Gradient text

Gradient headline

background: linear-gradient(90deg, #17f0eb, #172EF0);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #17f0eb;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #17f0eb;
caret-color: #17f0eb;
Left rule
Pull quote or callout
border-left: 4px solid #17f0eb;
Ring + tint
Selected chip
background: #E7FDFD;
box-shadow: inset 0 0 0 2px #17f0eb;
Conic badge
68%
background: conic-gradient(#17f0eb 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #17f0eb 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(23, 240, 235, 0.5)
rgb(23 240 235 / 50%)
#17f0eb80
hsl(179 88% 52% / 50%)
color-mix(in srgb, #17f0eb 50%, transparent)
Alpha8-digit hexFlat on white
10%#17f0eb1a#E8FEFD
20%#17f0eb33#D1FCFB
40%#17f0eb66#A2F9F7
60%#17f0eb99#74F6F3
80%#17f0ebcc#45F3EF

Gradients from #17f0eb

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, #51F4F0, #17f0eb 45%, #087875);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #17f0eb, #0E46DA);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #17f0eb, #F0171C);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #6DF6F2 0%, #17f0eb 45%, #087875 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%, #47F38B 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #3487F2 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #087875 0%, transparent 65%), #17f0eb;

Monochromatic scale

Palettes built from #17f0eb

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.

#17f0eb 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 14.70:1.

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.

#17f0eb, answered

What color is #17f0eb?

#17f0eb is a balanced electric cyan, closest to Cyan (ΔE2000 3.5). It sits at 179° on the hue wheel with 88% saturation and 52% lightness, which reads as cool.

What is the RGB value of #17f0eb?

rgb(23, 240, 235) — 23 red, 240 green and 235 blue out of 255, or 9% / 94.1% / 92.2% by channel.

What is #17f0eb in HSL and HSV?

hsl(179, 88%, 52%) and hsv(179, 90%, 94%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #17f0eb a light or a dark color?

It is a light color. Relative luminance is 0.6850 and perceived brightness is 79%, so black text on it reaches 14.70:1.

Should I use black or white text on #17f0eb?

Black. It scores 14.70:1 against #17f0eb, versus 1.43:1 for white — AAA at any size.

Is #17f0eb accessible on a white background?

#17f0eb on white scores 1.43:1, which fails WCAG AA at every size. Darken it to #098481 to reach 4.5:1, or #066361 for 7:1.

What is the complementary color of #17f0eb?

#F0171C sits directly opposite on the wheel. Softer options are the split-complements #F01789 and #F07F17, which give the same contrast with far less vibration.

What colors go well with #17f0eb?

For interface work: #F4FAFA as the surface, #C0EDEC for borders, #4B9B99 for secondary text, #F51250 as an accent and #087875 for hover and pressed states. For a palette, the analogous pair #17F07F and #1789F0 stays calm, while #F0171C is the loudest partner.

What is #17f0eb in CMYK for printing?

cmyk(90%, 0%, 2%, 6%). 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 #17f0eb warm or cool?

Cool — it scores 87 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #17F09B; nudged cooler, #15BDF3.

Which Tailwind color is closest to #17f0eb?

The teal family — its 500 step is #14b8a6, ΔE2000 14.6 away. That is a visible difference, so define #17f0eb as a custom token rather than reaching for the built-in.

How do I use #17f0eb in Tailwind CSS?

Inline it as an arbitrary value with bg-[#17f0eb] or text-[#17f0eb], 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 #17f0eb with 50% opacity?

rgba(23, 240, 235, 0.5), or #17f0eb80 in eight-digit hex. Over white that composites to #8BF8F5; over black, #0C7876.

Is #17f0eb a web-safe color?

No. The nearest web-safe colour is #00FFFF, ΔE2000 3.5 away. The palette only matters for legacy displays and some email clients now.

What does the color #17f0eb 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 #17f0eb?

The safest is same-hue elevation: linear-gradient(135deg, #51F4F0, #17f0eb 45%, #087875). For more colour, a short hue run to #0E46DA keeps it rich without turning muddy.

Work with #17f0eb in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #17f0eb at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.