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#b1fdfc

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

RGB
177, 253, 252
HSL
179°, 95%, 84%
CMYK
30, 0, 0, 1
Luminance
0.8663

At a glance

Every number on this page in one read: what #b1fdfc is made of, how bright it looks, and which way it leans.

Hex
#b1fdfc
Hue
179°
cyan
Saturation
95%
electric
Lightness
84%
light
Brightness
99%
HSV value
Perceived
91%
weighted brightness
Luminance
0.8663
WCAG relative
Temperature
Cool
87/100 cool
Color family
Cyan
Tone
Electric
Best ink
Black
18.33:1
Closest name
Pale Turquoise
ΔE2000 3.5
Where it sits
Hue179° of 360°
Saturation95%
Lightness84%
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.

Every format

HEX#b1fdfc
RGBrgb(177, 253, 252)
HSLhsl(179, 95%, 84%)
CMYKcmyk(30%, 0%, 0%, 1%)
LABlab(94.6 -23.3 -7.0)
LCHlch(94.6 24.4 196.6)
OKLCHoklch(0.945 0.074 194.9)
Decimal11664892
Display P3color(display-p3 0.694 0.992 0.988)

Copy-ready code

/* CSS */
color: #b1fdfc;
background-color: #b1fdfc;
/* Tailwind (arbitrary) */
class="text-[#b1fdfc] bg-[#b1fdfc]"
/* SCSS */
$brand: #b1fdfc;
/* SwiftUI */
Color(red: 0.694, green: 0.992, blue: 0.988)
/* Android */
Color.parseColor("#b1fdfc")
/* Flutter */
Color(0xFFB1FDFC)
/* Python / OpenCV (BGR) */
(252, 253, 177)

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 #b1fdfc · 18.33:1
Use #000000AAA at every size.
Aa
White text · 1.15:1
AA fail · AA large fail · AAA fail
Aa
Black text · 18.33:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #b1fdfc as text scores 1.15:1 on white and 18.33:1 on black.

Accessibility — WCAG contrast

Aa
#b1fdfc on white: 1.15:1
AA ✗ fail · AA-large · AAA
Aa
#b1fdfc on black: 18.33:1
AA ✓ pass · AA-large · AAA
true color
protanopia · #F4F6FC
deuteranopia · #E5EBFD
tritanopia · #95FFFC

Color scale — 50 to 950

A Tailwind-shaped ramp built around this exact hex. #b1fdfc is pinned to step 200; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F1FDFD
#E4FBFB
#b1fdfc
#92FCFB
#5BFBF9
#24F9F7
#06EFEC
#05C7C4
#049F9D
#087371
#054847
Base = 200Lightest = 50 · #F1FDFDDarkest = 950 · #054847
:root {
  --brand-50: #F1FDFD;
  --brand-100: #E4FBFB;
  --brand-200: #b1fdfc;
  --brand-300: #92FCFB;
  --brand-400: #5BFBF9;
  --brand-500: #24F9F7;
  --brand-600: #06EFEC;
  --brand-700: #05C7C4;
  --brand-800: #049F9D;
  --brand-900: #087371;
  --brand-950: #054847;
  --brand: #b1fdfc;
  --brand-ink: #000000;
}

Colors that work with #b1fdfc

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#4B9B9A
Captions on the surface
Accent#CC0035
Second voice, not a rival
Dark variant#037C7B
Hover, pressed, headers
Light variant#E6FEFE
Selected rows, tints
Dark surface#142424
Dark-mode background
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

How to use #b1fdfc

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

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#FDB1B2
Analogous left#B1FDD6
Analogous right#B1D8FD
Split-complement 1#FDB1D8
Split-complement 2#FDD6B1
Triadic 1#FCB1FD
Triadic 2#FDFCB1
Tetradic#D6B1FD

RGB percentages

Red69.4%
Green99.2%
Blue98.8%

CMYK percentages

Cyan30.0%
Magenta0.0%
Yellow0.4%
Key (black)0.8%

Color previews

#b1fdfc text on a black background

contrast 18.33:1

Card sample

#b1fdfc text on a white background

contrast 1.15:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #b1fdfc;
Background color
Panel with #b1fdfc background
background-color: #b1fdfc;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #b1fdfc;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(177, 253, 252, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(177, 253, 252, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b1fdfc;
background: linear-gradient(135deg, #b1fdfc, #B1CBFD);

Monochromatic scale

Palettes built from #b1fdfc

Shades — darker

Tints — lighter

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.

#b1fdfc 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.

#b1fdfc, answered

What color is #b1fdfc?

#b1fdfc is a light electric cyan, closest to Pale Turquoise (ΔE2000 3.5). It sits at 179° on the hue wheel with 95% saturation and 84% lightness, which reads as cool.

What is the RGB value of #b1fdfc?

rgb(177, 253, 252) — 177 red, 253 green and 252 blue out of 255, or 69.4% / 99.2% / 98.8% by channel.

Is #b1fdfc a light or a dark color?

It is a light color. Relative luminance is 0.8663 and perceived brightness is 91%, so black text on it reaches 18.33:1.

Should I use black or white text on #b1fdfc?

Black. It scores 18.33:1 against #b1fdfc, versus 1.15:1 for white — AAA at any size.

What is the complementary color of #b1fdfc?

#FDB1B2 sits directly opposite on the wheel. Softer options are the split-complements #FDB1D8 and #FDD6B1, which give the same contrast with far less vibration.

What colors go well with #b1fdfc?

For interface work: #F4FAFA as the surface, #C0EDEC for borders, #4B9B9A for secondary text, #CC0035 as an accent and #037C7B for hover and pressed states. For a palette, the analogous pair #B1FDD6 and #B1D8FD stays calm, while #FDB1B2 is the loudest partner.

What is #b1fdfc in CMYK for printing?

cmyk(30%, 0%, 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 #b1fdfc 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 #B1FDE0; nudged cooler, #B0E2FE.

Work with #b1fdfc in the Color Lab