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blue · cool

#a6dffc

a light, electric blue · cool · closest name: Light Blue

Token name suggestion: Morning Sapphire

RGB
166, 223, 252
HSL
200°, 94%, 82%
CMYK
34, 12, 0, 1
Luminance
0.6791

#a6dffc is a light electric blue, 200° on the wheel and 96/100 on the cool side. Put black text on it (14.58:1). As text it scores 1.44:1 on white — use #067BB7 instead. Nearest name is Light Blue, nearest Tailwind family is cyan.

hsl(200 94% 82%)rgb(166 223 252)Base step 300AAA inkCool

At a glance

Every number on this page in one read: what #a6dffc is made of, how bright it looks, and which way it leans.

Hex
#a6dffc
Hue
200°
blue
Saturation
94%
electric
Lightness
82%
light
Brightness
99%
HSV value
Perceived
83%
weighted brightness
Luminance
0.6791
WCAG relative
Temperature
Cool
96/100 cool
Color family
Blue
Tone
Electric
Best ink
Black
14.58:1
Closest name
Light Blue
ΔE2000 5.1
Chroma
22.9
LCH, 0–130ish
OKLCH L
0.874
perceptual lightness
Tailwind
cyan
500 · ΔE 15.3
Web-safe
#99CCFF
nearest of 216
Where it sits
Hue200° of 360°
Saturation94%
Lightness82%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #a6dffc.

Temperature
Warm ← → Cool96% 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
Red12%
Green78%
Blue10%

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

Every format

HEX#a6dffc
HEX (8-digit)#a6dffcff
RGBrgb(166, 223, 252)
RGBArgba(166, 223, 252, 1)
HSLhsl(200, 94%, 82%)
HSV / HSBhsv(200, 34%, 99%)
HWBhwb(200 65% 1%)
CMYKcmyk(34%, 12%, 0%, 1%)
LABlab(86.0 -11.3 -19.9)
LCHlch(86.0 22.9 240.4)
OKLCHoklch(0.874 0.071 230.6)
XYZ (D65)xyz(59.68, 67.91, 102.04)
Decimal10936316
Display P3color(display-p3 0.651 0.875 0.988)
Web-safe#99CCFF

Copy-ready code

every platformclick to select
/* CSS */
color: #a6dffc;
background-color: #a6dffc;
/* CSS custom property */
--brand: #a6dffc;
/* Tailwind (arbitrary) */
class="text-[#a6dffc] bg-[#a6dffc]"
/* SCSS */
$brand: #a6dffc;
/* SwiftUI */
Color(red: 0.651, green: 0.875, blue: 0.988)
/* UIKit */
UIColor(red: 0.651, green: 0.875, blue: 0.988, alpha: 1)
/* Android XML */
<color name="brand">#A6DFFC</color>
/* Android Compose */
Color(0xFFA6DFFC)
/* Flutter */
Color(0xFFA6DFFC)
/* Python / OpenCV (BGR) */
(252, 223, 166)
/* Python / PIL (RGB) */
(166, 223, 252)
/* Java AWT */
new Color(166, 223, 252)
/* .NET */
Color.FromArgb(255, 166, 223, 252)
/* OpenGL / Unity (0–1) */
(0.6510f, 0.8745f, 0.9882f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{166,223,252}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #a6dffc 85%, white);
border-color: color-mix(in oklab, #a6dffc 40%, transparent);
/* theme-aware in one line */
color: light-dark(#04537B, #D3E5EE);
/* relative colour syntax */
--hover: hsl(from #a6dffc 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: #F2F9FD;
  --brand-100: #E4F3FB;
  --brand-200: #C2E7FA;
  --brand-300: #a6dffc;
  --brand-400: #5CC5FA;
  --brand-500: #26B1F8;
  --brand-600: #08A0ED;
  --brand-700: #0785C5;
  --brand-800: #056B9E;
  --brand-900: #094E72;
  --brand-950: #053147;
  --brand: #a6dffc;
  --brand-ink: #000000;
  --brand-surface: #F4F8FA;
  --brand-border: #C0DEED;
  --brand-hover: #84D3FB;
  --brand-pressed: #61C6FA;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141F24;
    --brand-ink: #D3E5EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F2F9FD',
        100: '#E4F3FB',
        200: '#C2E7FA',
        300: '#a6dffc',
        400: '#5CC5FA',
        500: '#26B1F8',
        600: '#08A0ED',
        700: '#0785C5',
        800: '#056B9E',
        900: '#094E72',
        950: '#053147',
        DEFAULT: '#a6dffc',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2F9FD,
  '100': #E4F3FB,
  '200': #C2E7FA,
  '300': #a6dffc,
  '400': #5CC5FA,
  '500': #26B1F8,
  '600': #08A0ED,
  '700': #0785C5,
  '800': #056B9E,
  '900': #094E72,
  '950': #053147,
);
$brand-base: #a6dffc;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F2F9FD", "$type": "color" },
      "100": { "$value": "#E4F3FB", "$type": "color" },
      "200": { "$value": "#C2E7FA", "$type": "color" },
      "300": { "$value": "#a6dffc", "$type": "color" },
      "400": { "$value": "#5CC5FA", "$type": "color" },
      "500": { "$value": "#26B1F8", "$type": "color" },
      "600": { "$value": "#08A0ED", "$type": "color" },
      "700": { "$value": "#0785C5", "$type": "color" },
      "800": { "$value": "#056B9E", "$type": "color" },
      "900": { "$value": "#094E72", "$type": "color" },
      "950": { "$value": "#053147", "$type": "color" }
    },
    "brandInk": { "$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 #a6dffc · 14.58:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.44:1
AA fail · AA large fail · AAA fail
Aa
Black text · 14.58:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #a6dffc as text scores 1.44:1 on white and 14.58:1 on black.
Best tinted ink on it, if plain black or white feels flat: #04537B at 5.77:1.

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
#067BB7 · 4.64:1
AA on white−45% L
#067BB7
The quick fox
#055D8A · 7.14:1
AAA on white−54% L
#055D8A
The quick fox
#a6dffc · 14.58:1
AA on blackalready passes
#a6dffc
The quick fox
#a6dffc · 14.58:1
AAA on blackalready passes
#a6dffc

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #089CE8 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
#a6dffc on white: 1.44:1
AA ✗ fail · AA-large · AAA
Aa
#a6dffc on black: 14.58:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #a6dffc as text on that neutral, and that neutral as text on #a6dffc.

NeutralRatioBoth directions
White1.44:1AaAa
Slate 501.38:1AaAa
Slate 1001.31:1AaAa
Slate 2001.17:1AaAa
Slate 3001.03:1AaAa
Slate 4001.78:1AaAa
Slate 5003.30:1AaAa
Slate 6005.26:1AaAa
Slate 7007.19:1AaAa
Slate 80010.16:1AaAa
Slate 90012.40:1AaAa
Black14.58:1AaAa
Colour vision deficiency
true color
protanopia · #D1DDFE
deuteranopia · #C4D3FC
tritanopia · #88E7E8

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. #a6dffc is pinned to step 300; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F2F9FD
#E4F3FB
#C2E7FA
#a6dffc
#5CC5FA
#26B1F8
#08A0ED
#0785C5
#056B9E
#094E72
#053147
Base = 300Lightest = 50 · #F2F9FDDarkest = 950 · #053147Text 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 0.018 230.6);
  --brand-100: oklch(0.94 0.028 230.6);
  --brand-200: oklch(0.88 0.042 230.6);
  --brand-300: oklch(0.80 0.055 230.6);
  --brand-400: oklch(0.72 0.065 230.6);
  --brand-500: oklch(0.64 0.071 230.6);
  --brand-600: oklch(0.56 0.071 230.6);
  --brand-700: oklch(0.48 0.066 230.6);
  --brand-800: oklch(0.40 0.059 230.6);
  --brand-900: oklch(0.32 0.049 230.6);
  --brand-950: oklch(0.24 0.039 230.6);
}

Colors that work with #a6dffc

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#F4F8FA
Tinted page background
Border#C0DEED
Hairlines and dividers
Muted text#4B809B
Captions on the surface
Accent#CA1402
Second voice, not a rival
Dark variant#04537B
Hover, pressed, headers
Light variant#E6F6FE
Selected rows, tints
Dark surface#141F24
Dark-mode background
Hover#84D3FB
One step down in lightness
Pressed#61C6FA
Two steps down
Disabled#F3F6F7
Chroma pulled out
Focus ring#B8E7FF
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 #a6dffc

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
  • 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 #04537B
Safe as a 1px border on white
No — use #089CE8

Meaning and mood

What a colour in this family tends to signal, and how this particular chroma and lightness change the reading.

trustedcalmcompetentcorporate

The default of institutions for a reason: blue is read as stable and safe across nearly every culture that has been surveyed.

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

It is also the most crowded hue on the web. Distinctiveness has to come from your other choices.

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight18/100
  • 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#FCC3A6
Analogous left#A6FCEE
Analogous right#A6B4FC
Split-complement 1#FCA6B4
Split-complement 2#FCEEA6
Triadic 1#FCA6DF
Triadic 2#DFFCA6
Tetradic#EEA6FC
On the wheel
Base+30°−30°+120°+240°+180°200°

#a6dffc sits at 200°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red65.1%
Green87.5%
Blue98.8%
R · 0–255
166
0xa6
G · 0–255
223
0xdf
B · 0–255
252
0xfc

CMYK percentages

Cyan34.1%
Magenta11.5%
Yellow0.0%
Key (black)1.2%

Total ink coverage is 47%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#a6dffc text on a black background

contrast 14.58:1

Card sample

#a6dffc text on a white background

contrast 1.44:1

Card sample

#a6dffc on grey

1.31:1

#a6dffc on its own surface

1.35:1

#a6dffc on its dark surface

11.65:1

CSS3 live lab

Text font color

The quick brown fox

color: #a6dffc;
Background color
Panel with #a6dffc background
background-color: #a6dffc;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #a6dffc;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(166, 223, 252, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(166, 223, 252, 0.45);
Border & gradient
Gradient panel
border: 3px solid #a6dffc;
background: linear-gradient(135deg, #a6dffc, #A6A6FC);
Gradient text

Gradient headline

background: linear-gradient(90deg, #a6dffc, #BCA6FC);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #a6dffc;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #a6dffc;
caret-color: #a6dffc;
Left rule
Pull quote or callout
border-left: 4px solid #a6dffc;
Ring + tint
Selected chip
background: #E6F6FE;
box-shadow: inset 0 0 0 2px #a6dffc;
Conic badge
68%
background: conic-gradient(#a6dffc 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #a6dffc 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(166, 223, 252, 0.5)
rgb(166 223 252 / 50%)
#a6dffc80
hsl(200 94% 82% / 50%)
color-mix(in srgb, #a6dffc 50%, transparent)
Alpha8-digit hexFlat on white
10%#a6dffc1a#F6FCFF
20%#a6dffc33#EDF9FE
40%#a6dffc66#DBF2FE
60%#a6dffc99#CAECFD
80%#a6dffccc#B8E5FD

Gradients from #a6dffc

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, #E1F4FE, #a6dffc 45%, #04537B);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #a6dffc, #9289FB);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #a6dffc, #FCC3A6);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #F0FAFF 0%, #a6dffc 45%, #04537B 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F8FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #D8FEF4 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #C4C8FD 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #04537B 0%, transparent 65%), #a6dffc;

Monochromatic scale

Palettes built from #a6dffc

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.

#a6dffc in the real world

Where a color in this family tends to land, and the interface roles it is usually asked to play.

Industries
TechnologyFinanceHealthcareEnterprise SaaS
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 14.58:1.

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.

#a6dffc, answered

What color is #a6dffc?

#a6dffc is a light electric blue, closest to Light Blue (ΔE2000 5.1). It sits at 200° on the hue wheel with 94% saturation and 82% lightness, which reads as cool.

What is the RGB value of #a6dffc?

rgb(166, 223, 252) — 166 red, 223 green and 252 blue out of 255, or 65.1% / 87.5% / 98.8% by channel.

What is #a6dffc in HSL and HSV?

hsl(200, 94%, 82%) and hsv(200, 34%, 99%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #a6dffc a light or a dark color?

It is a light color. Relative luminance is 0.6791 and perceived brightness is 83%, so black text on it reaches 14.58:1.

Should I use black or white text on #a6dffc?

Black. It scores 14.58:1 against #a6dffc, versus 1.44:1 for white — AAA at any size.

Is #a6dffc accessible on a white background?

#a6dffc on white scores 1.44:1, which fails WCAG AA at every size. Darken it to #067BB7 to reach 4.5:1, or #055D8A for 7:1.

What is the complementary color of #a6dffc?

#FCC3A6 sits directly opposite on the wheel. Softer options are the split-complements #FCA6B4 and #FCEEA6, which give the same contrast with far less vibration.

What colors go well with #a6dffc?

For interface work: #F4F8FA as the surface, #C0DEED for borders, #4B809B for secondary text, #CA1402 as an accent and #04537B for hover and pressed states. For a palette, the analogous pair #A6FCEE and #A6B4FC stays calm, while #FCC3A6 is the loudest partner.

What is #a6dffc in CMYK for printing?

cmyk(34%, 12%, 0%, 1%). 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 #a6dffc warm or cool?

Cool — it scores 96 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #A6FCF9; nudged cooler, #A5D4FD.

Which Tailwind color is closest to #a6dffc?

The cyan family — its 500 step is #06b6d4, ΔE2000 15.3 away. That is a visible difference, so define #a6dffc as a custom token rather than reaching for the built-in.

How do I use #a6dffc in Tailwind CSS?

Inline it as an arbitrary value with bg-[#a6dffc] or text-[#a6dffc], 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 #a6dffc with 50% opacity?

rgba(166, 223, 252, 0.5), or #a6dffc80 in eight-digit hex. Over white that composites to #D3EFFE; over black, #53707E.

Is #a6dffc a web-safe color?

No. The nearest web-safe colour is #99CCFF, ΔE2000 7.9 away. The palette only matters for legacy displays and some email clients now.

What does the color #a6dffc mean?

As a blue, it reads trusted, calm, competent. The default of institutions for a reason: blue is read as stable and safe across nearly every culture that has been surveyed. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #a6dffc?

The safest is same-hue elevation: linear-gradient(135deg, #E1F4FE, #a6dffc 45%, #04537B). For more colour, a short hue run to #9289FB keeps it rich without turning muddy.

Work with #a6dffc in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #a6dffc at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.