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cyan · cool

#10f4cf

a balanced, electric cyan · cool · closest name: Aqua Marine

Token name suggestion: Atlas Lagoon

RGB
16, 244, 207
HSL
170°, 91%, 51%
CMYK
93, 0, 15, 4
Luminance
0.6932

#10f4cf is a balanced electric cyan, 170° on the wheel and 83/100 on the cool side. Put black text on it (14.86:1). As text it scores 1.41:1 on white — use #06846F instead. Nearest name is Aqua Marine, nearest Tailwind family is teal.

hsl(170 91% 51%)rgb(16 244 207)Base step 600AAA inkCool

At a glance

Every number on this page in one read: what #10f4cf is made of, how bright it looks, and which way it leans.

Hex
#10f4cf
Hue
170°
cyan
Saturation
91%
electric
Lightness
51%
balanced
Brightness
96%
HSV value
Perceived
78%
weighted brightness
Luminance
0.6932
WCAG relative
Temperature
Cool
83/100 cool
Color family
Cyan
Tone
Electric
Best ink
Black
14.86:1
Closest name
Aqua Marine
ΔE2000 5.9
Chroma
56.4
LCH, 0–130ish
OKLCH L
0.865
perceptual lightness
Tailwind
teal
500 · ΔE 14.8
Web-safe
#00FFCC
nearest of 216
Where it sits
Hue170° of 360°
Saturation91%
Lightness51%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #10f4cf.

Temperature
Warm ← → Cool83% 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%
Green93%
Blue6%

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

Every format

HEX#10f4cf
HEX (8-digit)#10f4cfff
RGBrgb(16, 244, 207)
RGBArgba(16, 244, 207, 1)
HSLhsl(170, 91%, 51%)
HSV / HSBhsv(170, 93%, 96%)
HWBhwb(170 6% 4%)
CMYKcmyk(93%, 0%, 15%, 4%)
LABlab(86.7 -56.2 4.3)
LCHlch(86.7 56.4 175.6)
OKLCHoklch(0.865 0.160 176.2)
XYZ (D65)xyz(43.82, 69.31, 70.09)
Decimal1111247
Display P3color(display-p3 0.063 0.957 0.812)
Web-safe#00FFCC

Copy-ready code

every platformclick to select
/* CSS */
color: #10f4cf;
background-color: #10f4cf;
/* CSS custom property */
--brand: #10f4cf;
/* Tailwind (arbitrary) */
class="text-[#10f4cf] bg-[#10f4cf]"
/* SCSS */
$brand: #10f4cf;
/* SwiftUI */
Color(red: 0.063, green: 0.957, blue: 0.812)
/* UIKit */
UIColor(red: 0.063, green: 0.957, blue: 0.812, alpha: 1)
/* Android XML */
<color name="brand">#10F4CF</color>
/* Android Compose */
Color(0xFF10F4CF)
/* Flutter */
Color(0xFF10F4CF)
/* Python / OpenCV (BGR) */
(207, 244, 16)
/* Python / PIL (RGB) */
(16, 244, 207)
/* Java AWT */
new Color(16, 244, 207)
/* .NET */
Color.FromArgb(255, 16, 244, 207)
/* OpenGL / Unity (0–1) */
(0.0627f, 0.9569f, 0.8118f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{16,244,207}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #10f4cf 85%, white);
border-color: color-mix(in oklab, #10f4cf 40%, transparent);
/* theme-aware in one line */
color: light-dark(#067A67, #D3EEEA);
/* relative colour syntax */
--hover: hsl(from #10f4cf 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: #F2FDFB;
  --brand-100: #E5FBF7;
  --brand-200: #C3F9F0;
  --brand-300: #94FAEA;
  --brand-400: #5EF8DF;
  --brand-500: #28F5D4;
  --brand-600: #10f4cf;
  --brand-700: #09C3A5;
  --brand-800: #079C84;
  --brand-900: #0A7160;
  --brand-950: #06463C;
  --brand: #10f4cf;
  --brand-ink: #000000;
  --brand-surface: #F4FAF9;
  --brand-border: #C0EDE5;
  --brand-hover: #0AD7B5;
  --brand-pressed: #08B499;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142422;
    --brand-ink: #D3EEEA;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F2FDFB',
        100: '#E5FBF7',
        200: '#C3F9F0',
        300: '#94FAEA',
        400: '#5EF8DF',
        500: '#28F5D4',
        600: '#10f4cf',
        700: '#09C3A5',
        800: '#079C84',
        900: '#0A7160',
        950: '#06463C',
        DEFAULT: '#10f4cf',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2FDFB,
  '100': #E5FBF7,
  '200': #C3F9F0,
  '300': #94FAEA,
  '400': #5EF8DF,
  '500': #28F5D4,
  '600': #10f4cf,
  '700': #09C3A5,
  '800': #079C84,
  '900': #0A7160,
  '950': #06463C,
);
$brand-base: #10f4cf;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F2FDFB", "$type": "color" },
      "100": { "$value": "#E5FBF7", "$type": "color" },
      "200": { "$value": "#C3F9F0", "$type": "color" },
      "300": { "$value": "#94FAEA", "$type": "color" },
      "400": { "$value": "#5EF8DF", "$type": "color" },
      "500": { "$value": "#28F5D4", "$type": "color" },
      "600": { "$value": "#10f4cf", "$type": "color" },
      "700": { "$value": "#09C3A5", "$type": "color" },
      "800": { "$value": "#079C84", "$type": "color" },
      "900": { "$value": "#0A7160", "$type": "color" },
      "950": { "$value": "#06463C", "$type": "color" }
    },
    "brandInk": { "$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 #10f4cf · 14.86:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.41:1
AA fail · AA large fail · AAA fail
Aa
Black text · 14.86:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #10f4cf as text scores 1.41:1 on white and 14.86:1 on black.
Best tinted ink on it, if plain black or white feels flat: #067A67 at 3.73:1.

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
#06846F · 4.63:1
AA on white−24% L
#06846F
The quick fox
#046252 · 7.31:1
AAA on white−31% L
#046252
The quick fox
#10f4cf · 14.86:1
AA on blackalready passes
#10f4cf
The quick fox
#10f4cf · 14.86:1
AAA on blackalready passes
#10f4cf

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #08A68C 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
#10f4cf on white: 1.41:1
AA ✗ fail · AA-large · AAA
Aa
#10f4cf on black: 14.86:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #10f4cf as text on that neutral, and that neutral as text on #10f4cf.

NeutralRatioBoth directions
White1.41:1AaAa
Slate 501.35:1AaAa
Slate 1001.29:1AaAa
Slate 2001.15:1AaAa
Slate 3001.05:1AaAa
Slate 4001.81:1AaAa
Slate 5003.37:1AaAa
Slate 6005.36:1AaAa
Slate 7007.33:1AaAa
Slate 80010.35:1AaAa
Slate 90012.64:1AaAa
Black14.86:1AaAa
Colour vision deficiency
true color
protanopia · #EAE4CD
deuteranopia · #D1D1D2
tritanopia · #00F7E9

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. #10f4cf 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.

#F2FDFB
#E5FBF7
#C3F9F0
#94FAEA
#5EF8DF
#28F5D4
#10f4cf
#09C3A5
#079C84
#0A7160
#06463C
Base = 600Lightest = 50 · #F2FDFBDarkest = 950 · #06463CText 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 0.040 176.2);
  --brand-100: oklch(0.94 0.064 176.2);
  --brand-200: oklch(0.88 0.096 176.2);
  --brand-300: oklch(0.80 0.125 176.2);
  --brand-400: oklch(0.72 0.147 176.2);
  --brand-500: oklch(0.64 0.160 176.2);
  --brand-600: oklch(0.56 0.160 176.2);
  --brand-700: oklch(0.48 0.150 176.2);
  --brand-800: oklch(0.40 0.134 176.2);
  --brand-900: oklch(0.32 0.112 176.2);
  --brand-950: oklch(0.24 0.088 176.2);
}

Colors that work with #10f4cf

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#F4FAF9
Tinted page background
Border#C0EDE5
Hairlines and dividers
Muted text#4B9B8E
Captions on the surface
Accent#F90B6D
Second voice, not a rival
Dark variant#067A67
Hover, pressed, headers
Light variant#E7FEFA
Selected rows, tints
Dark surface#142422
Dark-mode background
Hover#0AD7B5
One step down in lightness
Pressed#08B499
Two steps down
Disabled#ABC9C4
Chroma pulled out
Focus ring#1AFFDA
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 #10f4cf

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 #067A67
Safe as a 1px border on white
No — use #08A68C

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
  • 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#F41035
Analogous left#10F45D
Analogous right#10A7F4
Split-complement 1#F410A7
Split-complement 2#F45D10
Triadic 1#CF10F4
Triadic 2#F4CF10
Tetradic#5D10F4
On the wheel
Base+30°−30°+120°+240°+180°170°

#10f4cf sits at 170°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red6.3%
Green95.7%
Blue81.2%
R · 0–255
16
0x10
G · 0–255
244
0xf4
B · 0–255
207
0xcf

CMYK percentages

Cyan93.4%
Magenta0.0%
Yellow15.2%
Key (black)4.3%

Total ink coverage is 113%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#10f4cf text on a black background

contrast 14.86:1

Card sample

#10f4cf text on a white background

contrast 1.41:1

Card sample

#10f4cf on grey

1.29:1

#10f4cf on its own surface

1.34:1

#10f4cf on its dark surface

11.39:1

CSS3 live lab

Text font color

The quick brown fox

color: #10f4cf;
Background color
Panel with #10f4cf background
background-color: #10f4cf;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #10f4cf;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(16, 244, 207, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(16, 244, 207, 0.45);
Border & gradient
Gradient panel
border: 3px solid #10f4cf;
background: linear-gradient(135deg, #10f4cf, #1081F4);
Gradient text

Gradient headline

background: linear-gradient(90deg, #10f4cf, #1048F4);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #10f4cf;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #10f4cf;
caret-color: #10f4cf;
Left rule
Pull quote or callout
border-left: 4px solid #10f4cf;
Ring + tint
Selected chip
background: #E7FEFA;
box-shadow: inset 0 0 0 2px #10f4cf;
Conic badge
68%
background: conic-gradient(#10f4cf 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #10f4cf 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(16, 244, 207, 0.5)
rgb(16 244 207 / 50%)
#10f4cf80
hsl(170 91% 51% / 50%)
color-mix(in srgb, #10f4cf 50%, transparent)
Alpha8-digit hexFlat on white
10%#10f4cf1a#E7FEFA
20%#10f4cf33#CFFDF5
40%#10f4cf66#9FFBEC
60%#10f4cf99#70F8E2
80%#10f4cfcc#40F6D9

Gradients from #10f4cf

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, #4BF7DB, #10f4cf 45%, #067A67);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #10f4cf, #0A60DB);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #10f4cf, #F41035);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #68F8E1 0%, #10f4cf 45%, #067A67 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF9, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #41F66F 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #2DA1F5 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #067A67 0%, transparent 65%), #10f4cf;

Monochromatic scale

Palettes built from #10f4cf

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.

#10f4cf 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 14.86:1.

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.

#10f4cf, answered

What color is #10f4cf?

#10f4cf is a balanced electric cyan, closest to Aqua Marine (ΔE2000 5.9). It sits at 170° on the hue wheel with 91% saturation and 51% lightness, which reads as cool.

What is the RGB value of #10f4cf?

rgb(16, 244, 207) — 16 red, 244 green and 207 blue out of 255, or 6.3% / 95.7% / 81.2% by channel.

What is #10f4cf in HSL and HSV?

hsl(170, 91%, 51%) and hsv(170, 93%, 96%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #10f4cf a light or a dark color?

It is a light color. Relative luminance is 0.6932 and perceived brightness is 78%, so black text on it reaches 14.86:1.

Should I use black or white text on #10f4cf?

Black. It scores 14.86:1 against #10f4cf, versus 1.41:1 for white — AAA at any size.

Is #10f4cf accessible on a white background?

#10f4cf on white scores 1.41:1, which fails WCAG AA at every size. Darken it to #06846F to reach 4.5:1, or #046252 for 7:1.

What is the complementary color of #10f4cf?

#F41035 sits directly opposite on the wheel. Softer options are the split-complements #F410A7 and #F45D10, which give the same contrast with far less vibration.

What colors go well with #10f4cf?

For interface work: #F4FAF9 as the surface, #C0EDE5 for borders, #4B9B8E for secondary text, #F90B6D as an accent and #067A67 for hover and pressed states. For a palette, the analogous pair #10F45D and #10A7F4 stays calm, while #F41035 is the loudest partner.

What is #10f4cf in CMYK for printing?

cmyk(93%, 0%, 15%, 4%). 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 #10f4cf warm or cool?

Cool — it scores 83 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #10F47C; nudged cooler, #0ECFF7.

Which Tailwind color is closest to #10f4cf?

The teal family — its 500 step is #14b8a6, ΔE2000 14.8 away. That is a visible difference, so define #10f4cf as a custom token rather than reaching for the built-in.

How do I use #10f4cf in Tailwind CSS?

Inline it as an arbitrary value with bg-[#10f4cf] or text-[#10f4cf], 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 #10f4cf with 50% opacity?

rgba(16, 244, 207, 0.5), or #10f4cf80 in eight-digit hex. Over white that composites to #88FAE7; over black, #087A68.

Is #10f4cf a web-safe color?

No. The nearest web-safe colour is #00FFCC, ΔE2000 3.8 away. The palette only matters for legacy displays and some email clients now.

What does the color #10f4cf 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 #10f4cf?

The safest is same-hue elevation: linear-gradient(135deg, #4BF7DB, #10f4cf 45%, #067A67). For more colour, a short hue run to #0A60DB keeps it rich without turning muddy.

Work with #10f4cf in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #10f4cf at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.