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cyan · cool

#b1eee1

a light, vivid cyan · cool · closest name: Pale Turquoise

Token name suggestion: Linen Reef

RGB
177, 238, 225
HSL
167°, 64%, 81%
CMYK
26, 0, 6, 7
Luminance
0.7593

#b1eee1 is a light vivid cyan, 167° on the wheel and 82/100 on the cool side. Put black text on it (16.19:1). As text it scores 1.30:1 on white — use #1D836E instead. Nearest name is Pale Turquoise, nearest Tailwind family is teal.

hsl(167 64% 81%)rgb(177 238 225)Base step 300AAA inkCool

At a glance

Every number on this page in one read: what #b1eee1 is made of, how bright it looks, and which way it leans.

Hex
#b1eee1
Hue
167°
cyan
Saturation
64%
vivid
Lightness
81%
light
Brightness
93%
HSV value
Perceived
86%
weighted brightness
Luminance
0.7593
WCAG relative
Temperature
Cool
82/100 cool
Color family
Cyan
Tone
Vivid
Best ink
Black
16.19:1
Closest name
Pale Turquoise
ΔE2000 5
Chroma
21.8
LCH, 0–130ish
OKLCH L
0.904
perceptual lightness
Tailwind
teal
500 · ΔE 17.9
Web-safe
#99FFCC
nearest of 216
Where it sits
Hue167° of 360°
Saturation64%
Lightness81%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #b1eee1.

Temperature
Warm ← → Cool82% 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%
Green81%
Blue7%

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

Every format

HEX#b1eee1
HEX (8-digit)#b1eee1ff
RGBrgb(177, 238, 225)
RGBArgba(177, 238, 225, 1)
HSLhsl(167, 64%, 81%)
HSV / HSBhsv(167, 26%, 93%)
HWBhwb(167 69% 7%)
CMYKcmyk(26%, 0%, 6%, 7%)
LABlab(89.8 -21.8 0.1)
LCHlch(89.8 21.8 179.8)
OKLCHoklch(0.904 0.064 180.2)
XYZ (D65)xyz(62.29, 75.93, 82.59)
Decimal11661025
Display P3color(display-p3 0.694 0.933 0.882)
Web-safe#99FFCC

Copy-ready code

every platformclick to select
/* CSS */
color: #b1eee1;
background-color: #b1eee1;
/* CSS custom property */
--brand: #b1eee1;
/* Tailwind (arbitrary) */
class="text-[#b1eee1] bg-[#b1eee1]"
/* SCSS */
$brand: #b1eee1;
/* SwiftUI */
Color(red: 0.694, green: 0.933, blue: 0.882)
/* UIKit */
UIColor(red: 0.694, green: 0.933, blue: 0.882, alpha: 1)
/* Android XML */
<color name="brand">#B1EEE1</color>
/* Android Compose */
Color(0xFFB1EEE1)
/* Flutter */
Color(0xFFB1EEE1)
/* Python / OpenCV (BGR) */
(225, 238, 177)
/* Python / PIL (RGB) */
(177, 238, 225)
/* Java AWT */
new Color(177, 238, 225)
/* .NET */
Color.FromArgb(255, 177, 238, 225)
/* OpenGL / Unity (0–1) */
(0.6941f, 0.9333f, 0.8824f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{177,238,225}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #b1eee1 85%, white);
border-color: color-mix(in oklab, #b1eee1 40%, transparent);
/* theme-aware in one line */
color: light-dark(#176957, #D3EEE8);
/* relative colour syntax */
--hover: hsl(from #b1eee1 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: #F4FBFA;
  --brand-100: #E8F7F4;
  --brand-200: #CBF1E9;
  --brand-300: #b1eee1;
  --brand-400: #75E1CA;
  --brand-500: #47D7B8;
  --brand-600: #2CC9A7;
  --brand-700: #25A78C;
  --brand-800: #1D8670;
  --brand-900: #196152;
  --brand-950: #103D33;
  --brand: #b1eee1;
  --brand-ink: #000000;
  --brand-surface: #F4FAF9;
  --brand-border: #C0EDE3;
  --brand-hover: #94E8D6;
  --brand-pressed: #77E1CA;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142421;
    --brand-ink: #D3EEE8;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4FBFA',
        100: '#E8F7F4',
        200: '#CBF1E9',
        300: '#b1eee1',
        400: '#75E1CA',
        500: '#47D7B8',
        600: '#2CC9A7',
        700: '#25A78C',
        800: '#1D8670',
        900: '#196152',
        950: '#103D33',
        DEFAULT: '#b1eee1',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4FBFA,
  '100': #E8F7F4,
  '200': #CBF1E9,
  '300': #b1eee1,
  '400': #75E1CA,
  '500': #47D7B8,
  '600': #2CC9A7,
  '700': #25A78C,
  '800': #1D8670,
  '900': #196152,
  '950': #103D33,
);
$brand-base: #b1eee1;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4FBFA", "$type": "color" },
      "100": { "$value": "#E8F7F4", "$type": "color" },
      "200": { "$value": "#CBF1E9", "$type": "color" },
      "300": { "$value": "#b1eee1", "$type": "color" },
      "400": { "$value": "#75E1CA", "$type": "color" },
      "500": { "$value": "#47D7B8", "$type": "color" },
      "600": { "$value": "#2CC9A7", "$type": "color" },
      "700": { "$value": "#25A78C", "$type": "color" },
      "800": { "$value": "#1D8670", "$type": "color" },
      "900": { "$value": "#196152", "$type": "color" },
      "950": { "$value": "#103D33", "$type": "color" }
    },
    "brandInk": { "$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 #b1eee1 · 16.19:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.30:1
AA fail · AA large fail · AAA fail
Aa
Black text · 16.19:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #b1eee1 as text scores 1.30:1 on white and 16.19:1 on black.
Best tinted ink on it, if plain black or white feels flat: #176957 at 5.07:1.

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
#1D836E · 4.64:1
AA on white−50% L
#1D836E
The quick fox
#156252 · 7.24:1
AAA on white−58% L
#156252
The quick fox
#b1eee1 · 16.19:1
AA on blackalready passes
#b1eee1
The quick fox
#b1eee1 · 16.19:1
AAA on blackalready passes
#b1eee1

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #24A589 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
#b1eee1 on white: 1.30:1
AA ✗ fail · AA-large · AAA
Aa
#b1eee1 on black: 16.19:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #b1eee1 as text on that neutral, and that neutral as text on #b1eee1.

NeutralRatioBoth directions
White1.30:1AaAa
Slate 501.24:1AaAa
Slate 1001.18:1AaAa
Slate 2001.05:1AaAa
Slate 3001.14:1AaAa
Slate 4001.98:1AaAa
Slate 5003.67:1AaAa
Slate 6005.84:1AaAa
Slate 7007.98:1AaAa
Slate 80011.28:1AaAa
Slate 90013.76:1AaAa
Black16.19:1AaAa
Colour vision deficiency
true color
protanopia · #E9E7E1
deuteranopia · #DDDEE2
tritanopia · #A0F0EA

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. #b1eee1 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.

#F4FBFA
#E8F7F4
#CBF1E9
#b1eee1
#75E1CA
#47D7B8
#2CC9A7
#25A78C
#1D8670
#196152
#103D33
Base = 300Lightest = 50 · #F4FBFADarkest = 950 · #103D33Text 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 0.016 180.2);
  --brand-100: oklch(0.94 0.026 180.2);
  --brand-200: oklch(0.88 0.039 180.2);
  --brand-300: oklch(0.80 0.050 180.2);
  --brand-400: oklch(0.72 0.059 180.2);
  --brand-500: oklch(0.64 0.064 180.2);
  --brand-600: oklch(0.56 0.064 180.2);
  --brand-700: oklch(0.48 0.060 180.2);
  --brand-800: oklch(0.40 0.054 180.2);
  --brand-900: oklch(0.32 0.045 180.2);
  --brand-950: oklch(0.24 0.035 180.2);
}

Colors that work with #b1eee1

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#C0EDE3
Hairlines and dividers
Muted text#4B9B8A
Captions on the surface
Accent#AC2061
Second voice, not a rival
Dark variant#176957
Hover, pressed, headers
Light variant#EAFAF7
Selected rows, tints
Dark surface#142421
Dark-mode background
Hover#94E8D6
One step down in lightness
Pressed#77E1CA
Two steps down
Disabled#F3F7F6
Chroma pulled out
Focus ring#BEF5EA
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 #b1eee1

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 #176957
Safe as a 1px border on white
No — use #24A589

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 lightness keeps it airy and approachable.

Worth knowing

At high lightness it disappears into white surfaces and thin strokes vanish entirely.

Reads as
  • FormalityMedium
  • EnergyMedium-high
  • Weight19/100
  • 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#EEB1BE
Analogous left#B1EEC3
Analogous right#B1DDEE
Split-complement 1#EEB1DD
Split-complement 2#EEC3B1
Triadic 1#E1B1EE
Triadic 2#EEE1B1
Tetradic#C3B1EE
On the wheel
Base+30°−30°+120°+240°+180°167°

#b1eee1 sits at 167°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red69.4%
Green93.3%
Blue88.2%
R · 0–255
177
0xb1
G · 0–255
238
0xee
B · 0–255
225
0xe1

CMYK percentages

Cyan25.6%
Magenta0.0%
Yellow5.5%
Key (black)6.7%

Total ink coverage is 38%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#b1eee1 text on a black background

contrast 16.19:1

Card sample

#b1eee1 text on a white background

contrast 1.30:1

Card sample

#b1eee1 on grey

1.18:1

#b1eee1 on its own surface

1.23:1

#b1eee1 on its dark surface

12.41:1

CSS3 live lab

Text font color

The quick brown fox

color: #b1eee1;
Background color
Panel with #b1eee1 background
background-color: #b1eee1;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #b1eee1;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(177, 238, 225, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(177, 238, 225, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b1eee1;
background: linear-gradient(135deg, #b1eee1, #B1D2EE);
Gradient text

Gradient headline

background: linear-gradient(90deg, #b1eee1, #B1C3EE);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #b1eee1;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #b1eee1;
caret-color: #b1eee1;
Left rule
Pull quote or callout
border-left: 4px solid #b1eee1;
Ring + tint
Selected chip
background: #EAFAF7;
box-shadow: inset 0 0 0 2px #b1eee1;
Conic badge
68%
background: conic-gradient(#b1eee1 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #b1eee1 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(177, 238, 225, 0.5)
rgb(177 238 225 / 50%)
#b1eee180
hsl(167 64% 81% / 50%)
color-mix(in srgb, #b1eee1 50%, transparent)
Alpha8-digit hexFlat on white
10%#b1eee11a#F7FDFC
20%#b1eee133#EFFCF9
40%#b1eee166#E0F8F3
60%#b1eee199#D0F5ED
80%#b1eee1cc#C1F1E7

Gradients from #b1eee1

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, #E3F9F4, #b1eee1 45%, #176957);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #b1eee1, #98BDE9);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #b1eee1, #EEB1BE);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #F2FCFA 0%, #b1eee1 45%, #176957 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%, #DBF7E1 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #CAE4F3 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #176957 0%, transparent 65%), #b1eee1;

Monochromatic scale

Palettes built from #b1eee1

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.

#b1eee1 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

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 16.19:1.

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.

#b1eee1, answered

What color is #b1eee1?

#b1eee1 is a light vivid cyan, closest to Pale Turquoise (ΔE2000 5). It sits at 167° on the hue wheel with 64% saturation and 81% lightness, which reads as cool.

What is the RGB value of #b1eee1?

rgb(177, 238, 225) — 177 red, 238 green and 225 blue out of 255, or 69.4% / 93.3% / 88.2% by channel.

What is #b1eee1 in HSL and HSV?

hsl(167, 64%, 81%) and hsv(167, 26%, 93%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #b1eee1 a light or a dark color?

It is a light color. Relative luminance is 0.7593 and perceived brightness is 86%, so black text on it reaches 16.19:1.

Should I use black or white text on #b1eee1?

Black. It scores 16.19:1 against #b1eee1, versus 1.30:1 for white — AAA at any size.

Is #b1eee1 accessible on a white background?

#b1eee1 on white scores 1.30:1, which fails WCAG AA at every size. Darken it to #1D836E to reach 4.5:1, or #156252 for 7:1.

What is the complementary color of #b1eee1?

#EEB1BE sits directly opposite on the wheel. Softer options are the split-complements #EEB1DD and #EEC3B1, which give the same contrast with far less vibration.

What colors go well with #b1eee1?

For interface work: #F4FAF9 as the surface, #C0EDE3 for borders, #4B9B8A for secondary text, #AC2061 as an accent and #176957 for hover and pressed states. For a palette, the analogous pair #B1EEC3 and #B1DDEE stays calm, while #EEB1BE is the loudest partner.

What is #b1eee1 in CMYK for printing?

cmyk(26%, 0%, 6%, 7%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #b1eee1 warm or cool?

Cool — it scores 82 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #B1EECB; nudged cooler, #B0E5EF.

Which Tailwind color is closest to #b1eee1?

The teal family — its 500 step is #14b8a6, ΔE2000 17.9 away. That is a visible difference, so define #b1eee1 as a custom token rather than reaching for the built-in.

How do I use #b1eee1 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#b1eee1] or text-[#b1eee1], 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 #b1eee1 with 50% opacity?

rgba(177, 238, 225, 0.5), or #b1eee180 in eight-digit hex. Over white that composites to #D8F7F0; over black, #597771.

Is #b1eee1 a web-safe color?

No. The nearest web-safe colour is #99FFCC, ΔE2000 11.4 away. The palette only matters for legacy displays and some email clients now.

What does the color #b1eee1 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 #b1eee1?

The safest is same-hue elevation: linear-gradient(135deg, #E3F9F4, #b1eee1 45%, #176957). For more colour, a short hue run to #98BDE9 keeps it rich without turning muddy.

Work with #b1eee1 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #b1eee1 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.