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#b2d9fd

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

RGB
178, 217, 253
HSL
209°, 95%, 85%
CMYK
30, 14, 0, 1
Luminance
0.6618

At a glance

Every number on this page in one read: what #b2d9fd is made of, how bright it looks, and which way it leans.

Hex
#b2d9fd
Hue
209°
blue
Saturation
95%
electric
Lightness
85%
light
Brightness
99%
HSV value
Perceived
83%
weighted brightness
Luminance
0.6618
WCAG relative
Temperature
Cool
99/100 cool
Color family
Blue
Tone
Electric
Best ink
Black
14.24:1
Closest name
Light Sky Blue
ΔE2000 6.6
Where it sits
Hue209° of 360°
Saturation95%
Lightness85%
Temperature
Warm ← → Cool99% 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#b2d9fd
RGBrgb(178, 217, 253)
HSLhsl(209, 95%, 85%)
CMYKcmyk(30%, 14%, 0%, 1%)
LABlab(85.1 -4.7 -21.7)
LCHlch(85.1 22.2 257.8)
OKLCHoklch(0.869 0.065 246.5)
Decimal11721213
Display P3color(display-p3 0.698 0.851 0.992)

Copy-ready code

/* CSS */
color: #b2d9fd;
background-color: #b2d9fd;
/* Tailwind (arbitrary) */
class="text-[#b2d9fd] bg-[#b2d9fd]"
/* SCSS */
$brand: #b2d9fd;
/* SwiftUI */
Color(red: 0.698, green: 0.851, blue: 0.992)
/* Android */
Color.parseColor("#b2d9fd")
/* Flutter */
Color(0xFFB2D9FD)
/* Python / OpenCV (BGR) */
(253, 217, 178)

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 #b2d9fd · 14.24:1
Use #000000AAA at every size.
Aa
White text · 1.48:1
AA fail · AA large fail · AAA fail
Aa
Black text · 14.24:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #b2d9fd as text scores 1.48:1 on white and 14.24:1 on black.

Accessibility — WCAG contrast

Aa
#b2d9fd on white: 1.48:1
AA ✗ fail · AA-large · AAA
Aa
#b2d9fd on black: 14.24:1
AA ✓ pass · AA-large · AAA
true color
protanopia · #CBD9FF
deuteranopia · #C2D1FC
tritanopia · #9BE1E5

Color scale — 50 to 950

A Tailwind-shaped ramp built around this exact hex. #b2d9fd 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.

#F1F8FD
#E4F0FB
#b2d9fd
#92C9FC
#5BAEFB
#2493F9
#067FEF
#056AC7
#04559F
#083F73
#052848
Base = 200Lightest = 50 · #F1F8FDDarkest = 950 · #052848
:root {
  --brand-50: #F1F8FD;
  --brand-100: #E4F0FB;
  --brand-200: #b2d9fd;
  --brand-300: #92C9FC;
  --brand-400: #5BAEFB;
  --brand-500: #2493F9;
  --brand-600: #067FEF;
  --brand-700: #056AC7;
  --brand-800: #04559F;
  --brand-900: #083F73;
  --brand-950: #052848;
  --brand: #b2d9fd;
  --brand-ink: #000000;
}

Colors that work with #b2d9fd

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#F4F7FA
Tinted page background
Border#C0D7ED
Hairlines and dividers
Muted text#4B749B
Captions on the surface
Accent#CC2F00
Second voice, not a rival
Dark variant#03427C
Hover, pressed, headers
Light variant#E6F3FE
Selected rows, tints
Dark surface#141C24
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 #b2d9fd

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

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#FDD6B2
Analogous left#B2FDFB
Analogous right#B2B3FD
Split-complement 1#FDB2B3
Split-complement 2#FDFBB2
Triadic 1#FDB2D9
Triadic 2#D9FDB2
Tetradic#FBB2FD

RGB percentages

Red69.8%
Green85.1%
Blue99.2%

CMYK percentages

Cyan29.6%
Magenta14.2%
Yellow0.0%
Key (black)0.8%

Color previews

#b2d9fd text on a black background

contrast 14.24:1

Card sample

#b2d9fd text on a white background

contrast 1.48:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #b2d9fd;
Background color
Panel with #b2d9fd background
background-color: #b2d9fd;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #b2d9fd;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(178, 217, 253, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(178, 217, 253, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b2d9fd;
background: linear-gradient(135deg, #b2d9fd, #BDB2FD);

Monochromatic scale

Palettes built from #b2d9fd

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.

#b2d9fd 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.

#b2d9fd, answered

What color is #b2d9fd?

#b2d9fd is a light electric blue, closest to Light Sky Blue (ΔE2000 6.6). It sits at 209° on the hue wheel with 95% saturation and 85% lightness, which reads as cool.

What is the RGB value of #b2d9fd?

rgb(178, 217, 253) — 178 red, 217 green and 253 blue out of 255, or 69.8% / 85.1% / 99.2% by channel.

Is #b2d9fd a light or a dark color?

It is a light color. Relative luminance is 0.6618 and perceived brightness is 83%, so black text on it reaches 14.24:1.

Should I use black or white text on #b2d9fd?

Black. It scores 14.24:1 against #b2d9fd, versus 1.48:1 for white — AAA at any size.

What is the complementary color of #b2d9fd?

#FDD6B2 sits directly opposite on the wheel. Softer options are the split-complements #FDB2B3 and #FDFBB2, which give the same contrast with far less vibration.

What colors go well with #b2d9fd?

For interface work: #F4F7FA as the surface, #C0D7ED for borders, #4B749B for secondary text, #CC2F00 as an accent and #03427C for hover and pressed states. For a palette, the analogous pair #B2FDFB and #B2B3FD stays calm, while #FDD6B2 is the loudest partner.

What is #b2d9fd in CMYK for printing?

cmyk(30%, 14%, 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 #b2d9fd warm or cool?

Cool — it scores 99 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #B2BDFD; nudged cooler, #98C9FD.

Work with #b2d9fd in the Color Lab