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cyan · cool

#6cf5cd

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

Token name suggestion: Linen Glacier

RGB
108, 245, 205
HSL
163°, 87%, 69%
CMYK
56, 0, 16, 4
Luminance
0.7290

#6cf5cd is a light electric cyan, 163° on the wheel and 80/100 on the cool side. Put black text on it (15.58:1). As text it scores 1.35:1 on white — use #098762 instead. Nearest name is Aqua Marine, nearest Tailwind family is teal.

hsl(163 87% 69%)rgb(108 245 205)Base step 400AAA inkCool

At a glance

Every number on this page in one read: what #6cf5cd is made of, how bright it looks, and which way it leans.

Hex
#6cf5cd
Hue
163°
cyan
Saturation
87%
electric
Lightness
69%
light
Brightness
96%
HSV value
Perceived
82%
weighted brightness
Luminance
0.7290
WCAG relative
Temperature
Cool
80/100 cool
Color family
Cyan
Tone
Electric
Best ink
Black
15.58:1
Closest name
Aqua Marine
ΔE2000 2.5
Chroma
47.5
LCH, 0–130ish
OKLCH L
0.883
perceptual lightness
Tailwind
teal
500 · ΔE 16
Web-safe
#66FFCC
nearest of 216
Where it sits
Hue163° of 360°
Saturation87%
Lightness69%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #6cf5cd.

Temperature
Warm ← → Cool80% 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%
Green90%
Blue6%

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

Every format

HEX#6cf5cd
HEX (8-digit)#6cf5cdff
RGBrgb(108, 245, 205)
RGBArgba(108, 245, 205, 1)
HSLhsl(163, 87%, 69%)
HSV / HSBhsv(162, 56%, 96%)
HWBhwb(163 42% 4%)
CMYKcmyk(56%, 0%, 16%, 4%)
LABlab(88.4 -46.8 8.1)
LCHlch(88.4 47.5 170.2)
OKLCHoklch(0.883 0.134 171.2)
XYZ (D65)xyz(49.85, 72.90, 69.19)
Decimal7140813
Display P3color(display-p3 0.424 0.961 0.804)
Web-safe#66FFCC

Copy-ready code

every platformclick to select
/* CSS */
color: #6cf5cd;
background-color: #6cf5cd;
/* CSS custom property */
--brand: #6cf5cd;
/* Tailwind (arbitrary) */
class="text-[#6cf5cd] bg-[#6cf5cd]"
/* SCSS */
$brand: #6cf5cd;
/* SwiftUI */
Color(red: 0.424, green: 0.961, blue: 0.804)
/* UIKit */
UIColor(red: 0.424, green: 0.961, blue: 0.804, alpha: 1)
/* Android XML */
<color name="brand">#6CF5CD</color>
/* Android Compose */
Color(0xFF6CF5CD)
/* Flutter */
Color(0xFF6CF5CD)
/* Python / OpenCV (BGR) */
(205, 245, 108)
/* Python / PIL (RGB) */
(108, 245, 205)
/* Java AWT */
new Color(108, 245, 205)
/* .NET */
Color.FromArgb(255, 108, 245, 205)
/* OpenGL / Unity (0–1) */
(0.4235f, 0.9608f, 0.8039f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{108,245,205}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #6cf5cd 85%, white);
border-color: color-mix(in oklab, #6cf5cd 40%, transparent);
/* theme-aware in one line */
color: light-dark(#087757, #D3EEE6);
/* relative colour syntax */
--hover: hsl(from #6cf5cd 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: #F2FDFA;
  --brand-100: #E5FAF4;
  --brand-200: #C4F7E9;
  --brand-300: #96F8DB;
  --brand-400: #6cf5cd;
  --brand-500: #2DF1B8;
  --brand-600: #10E5A7;
  --brand-700: #0DBF8B;
  --brand-800: #0A996F;
  --brand-900: #0C6E52;
  --brand-950: #084533;
  --brand: #6cf5cd;
  --brand-ink: #000000;
  --brand-surface: #F4FAF9;
  --brand-border: #C0EDE0;
  --brand-hover: #4AF3C2;
  --brand-pressed: #29F0B6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142420;
    --brand-ink: #D3EEE6;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F2FDFA',
        100: '#E5FAF4',
        200: '#C4F7E9',
        300: '#96F8DB',
        400: '#6cf5cd',
        500: '#2DF1B8',
        600: '#10E5A7',
        700: '#0DBF8B',
        800: '#0A996F',
        900: '#0C6E52',
        950: '#084533',
        DEFAULT: '#6cf5cd',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2FDFA,
  '100': #E5FAF4,
  '200': #C4F7E9,
  '300': #96F8DB,
  '400': #6cf5cd,
  '500': #2DF1B8,
  '600': #10E5A7,
  '700': #0DBF8B,
  '800': #0A996F,
  '900': #0C6E52,
  '950': #084533,
);
$brand-base: #6cf5cd;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F2FDFA", "$type": "color" },
      "100": { "$value": "#E5FAF4", "$type": "color" },
      "200": { "$value": "#C4F7E9", "$type": "color" },
      "300": { "$value": "#96F8DB", "$type": "color" },
      "400": { "$value": "#6cf5cd", "$type": "color" },
      "500": { "$value": "#2DF1B8", "$type": "color" },
      "600": { "$value": "#10E5A7", "$type": "color" },
      "700": { "$value": "#0DBF8B", "$type": "color" },
      "800": { "$value": "#0A996F", "$type": "color" },
      "900": { "$value": "#0C6E52", "$type": "color" },
      "950": { "$value": "#084533", "$type": "color" }
    },
    "brandInk": { "$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 #6cf5cd · 15.58:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.35:1
AA fail · AA large fail · AAA fail
Aa
Black text · 15.58:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #6cf5cd as text scores 1.35:1 on white and 15.58:1 on black.
Best tinted ink on it, if plain black or white feels flat: #087757 at 4.11:1.

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
#098762 · 4.51:1
AA on white−41% L
#098762
The quick fox
#07654A · 7.07:1
AAA on white−48% L
#07654A
The quick fox
#6cf5cd · 15.58:1
AA on blackalready passes
#6cf5cd
The quick fox
#6cf5cd · 15.58:1
AAA on blackalready passes
#6cf5cd

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #0BA87A 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
#6cf5cd on white: 1.35:1
AA ✗ fail · AA-large · AAA
Aa
#6cf5cd on black: 15.58:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #6cf5cd as text on that neutral, and that neutral as text on #6cf5cd.

NeutralRatioBoth directions
White1.35:1AaAa
Slate 501.29:1AaAa
Slate 1001.23:1AaAa
Slate 2001.09:1AaAa
Slate 3001.10:1AaAa
Slate 4001.90:1AaAa
Slate 5003.53:1AaAa
Slate 6005.62:1AaAa
Slate 7007.68:1AaAa
Slate 80010.85:1AaAa
Slate 90013.25:1AaAa
Black15.58:1AaAa
Colour vision deficiency
true color
protanopia · #EEE7CB
deuteranopia · #DAD8D0
tritanopia · #18F7E9

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. #6cf5cd 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.

#F2FDFA
#E5FAF4
#C4F7E9
#96F8DB
#6cf5cd
#2DF1B8
#10E5A7
#0DBF8B
#0A996F
#0C6E52
#084533
Base = 400Lightest = 50 · #F2FDFADarkest = 950 · #084533Text 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 0.033 171.2);
  --brand-100: oklch(0.94 0.053 171.2);
  --brand-200: oklch(0.88 0.080 171.2);
  --brand-300: oklch(0.80 0.104 171.2);
  --brand-400: oklch(0.72 0.123 171.2);
  --brand-500: oklch(0.64 0.134 171.2);
  --brand-600: oklch(0.56 0.134 171.2);
  --brand-700: oklch(0.48 0.125 171.2);
  --brand-800: oklch(0.40 0.112 171.2);
  --brand-900: oklch(0.32 0.093 171.2);
  --brand-950: oklch(0.24 0.073 171.2);
}

Colors that work with #6cf5cd

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#C0EDE0
Hairlines and dividers
Muted text#4B9B83
Captions on the surface
Accent#C3096D
Second voice, not a rival
Dark variant#087757
Hover, pressed, headers
Light variant#E7FDF7
Selected rows, tints
Dark surface#142420
Dark-mode background
Hover#4AF3C2
One step down in lightness
Pressed#29F0B6
Two steps down
Disabled#E4EDEB
Chroma pulled out
Focus ring#78FDD6
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 #6cf5cd

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 #087757
Safe as a 1px border on white
No — use #0BA87A

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
  • Weight31/100
  • 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#F56C94
Analogous left#6CF588
Analogous right#6CD8F5
Split-complement 1#F56CD8
Split-complement 2#F5886C
Triadic 1#CD6CF5
Triadic 2#F5CD6C
Tetradic#886CF5
On the wheel
Base+30°−30°+120°+240°+180°163°

#6cf5cd sits at 163°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red42.4%
Green96.1%
Blue80.4%
R · 0–255
108
0x6c
G · 0–255
245
0xf5
B · 0–255
205
0xcd

CMYK percentages

Cyan55.9%
Magenta0.0%
Yellow16.3%
Key (black)3.9%

Total ink coverage is 76%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#6cf5cd text on a black background

contrast 15.58:1

Card sample

#6cf5cd text on a white background

contrast 1.35:1

Card sample

#6cf5cd on grey

1.23:1

#6cf5cd on its own surface

1.28:1

#6cf5cd on its dark surface

11.96:1

CSS3 live lab

Text font color

The quick brown fox

color: #6cf5cd;
Background color
Panel with #6cf5cd background
background-color: #6cf5cd;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #6cf5cd;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(108, 245, 205, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(108, 245, 205, 0.45);
Border & gradient
Gradient panel
border: 3px solid #6cf5cd;
background: linear-gradient(135deg, #6cf5cd, #6CC2F5);
Gradient text

Gradient headline

background: linear-gradient(90deg, #6cf5cd, #6C9FF5);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #6cf5cd;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #6cf5cd;
caret-color: #6cf5cd;
Left rule
Pull quote or callout
border-left: 4px solid #6cf5cd;
Ring + tint
Selected chip
background: #E7FDF7;
box-shadow: inset 0 0 0 2px #6cf5cd;
Conic badge
68%
background: conic-gradient(#6cf5cd 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #6cf5cd 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(108, 245, 205, 0.5)
rgb(108 245 205 / 50%)
#6cf5cd80
hsl(163 87% 69% / 50%)
color-mix(in srgb, #6cf5cd 50%, transparent)
Alpha8-digit hexFlat on white
10%#6cf5cd1a#F0FEFA
20%#6cf5cd33#E2FDF5
40%#6cf5cd66#C4FBEB
60%#6cf5cd99#A7F9E1
80%#6cf5cdcc#89F7D7

Gradients from #6cf5cd

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, #A5F9E0, #6cf5cd 45%, #087757);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #6cf5cd, #4FA8F3);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #6cf5cd, #F56C94);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #C2FBEA 0%, #6cf5cd 45%, #087757 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%, #9CF8A7 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #89D7F7 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #087757 0%, transparent 65%), #6cf5cd;

Monochromatic scale

Palettes built from #6cf5cd

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.

#6cf5cd 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 15.58:1.

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.

#6cf5cd, answered

What color is #6cf5cd?

#6cf5cd is a light electric cyan, closest to Aqua Marine (ΔE2000 2.5). It sits at 163° on the hue wheel with 87% saturation and 69% lightness, which reads as cool.

What is the RGB value of #6cf5cd?

rgb(108, 245, 205) — 108 red, 245 green and 205 blue out of 255, or 42.4% / 96.1% / 80.4% by channel.

What is #6cf5cd in HSL and HSV?

hsl(163, 87%, 69%) and hsv(162, 56%, 96%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #6cf5cd a light or a dark color?

It is a light color. Relative luminance is 0.7290 and perceived brightness is 82%, so black text on it reaches 15.58:1.

Should I use black or white text on #6cf5cd?

Black. It scores 15.58:1 against #6cf5cd, versus 1.35:1 for white — AAA at any size.

Is #6cf5cd accessible on a white background?

#6cf5cd on white scores 1.35:1, which fails WCAG AA at every size. Darken it to #098762 to reach 4.5:1, or #07654A for 7:1.

What is the complementary color of #6cf5cd?

#F56C94 sits directly opposite on the wheel. Softer options are the split-complements #F56CD8 and #F5886C, which give the same contrast with far less vibration.

What colors go well with #6cf5cd?

For interface work: #F4FAF9 as the surface, #C0EDE0 for borders, #4B9B83 for secondary text, #C3096D as an accent and #087757 for hover and pressed states. For a palette, the analogous pair #6CF588 and #6CD8F5 stays calm, while #F56C94 is the loudest partner.

What is #6cf5cd in CMYK for printing?

cmyk(56%, 0%, 16%, 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 #6cf5cd warm or cool?

Cool — it scores 80 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #6CF59B; nudged cooler, #6AECF7.

Which Tailwind color is closest to #6cf5cd?

The teal family — its 500 step is #14b8a6, ΔE2000 16 away. That is a visible difference, so define #6cf5cd as a custom token rather than reaching for the built-in.

How do I use #6cf5cd in Tailwind CSS?

Inline it as an arbitrary value with bg-[#6cf5cd] or text-[#6cf5cd], 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 #6cf5cd with 50% opacity?

rgba(108, 245, 205, 0.5), or #6cf5cd80 in eight-digit hex. Over white that composites to #B6FAE6; over black, #367B67.

Is #6cf5cd a web-safe color?

No. The nearest web-safe colour is #66FFCC, ΔE2000 3.1 away. The palette only matters for legacy displays and some email clients now.

What does the color #6cf5cd 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 #6cf5cd?

The safest is same-hue elevation: linear-gradient(135deg, #A5F9E0, #6cf5cd 45%, #087757). For more colour, a short hue run to #4FA8F3 keeps it rich without turning muddy.

Work with #6cf5cd in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #6cf5cd at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.