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blue · cool

#b5cfe7

a light, vivid blue · cool · closest name: Light Steel Blue

Token name suggestion: Meadow Sapphire

RGB
181, 207, 231
HSL
209°, 51%, 81%
CMYK
22, 10, 0, 9
Luminance
0.6022

#b5cfe7 is a light vivid blue, 209° on the wheel and 99/100 on the cool side. Put black text on it (13.04:1). As text it scores 1.61:1 on white — use #3A7AB4 instead. Nearest name is Light Steel Blue, nearest Tailwind family is cyan.

hsl(209 51% 81%)rgb(181 207 231)Base step 300AAA inkCool

At a glance

Every number on this page in one read: what #b5cfe7 is made of, how bright it looks, and which way it leans.

Hex
#b5cfe7
Hue
209°
blue
Saturation
51%
vivid
Lightness
81%
light
Brightness
91%
HSV value
Perceived
79%
weighted brightness
Luminance
0.6022
WCAG relative
Temperature
Cool
99/100 cool
Color family
Blue
Tone
Vivid
Best ink
Black
13.04:1
Closest name
Light Steel Blue
ΔE2000 3.6
Chroma
15.2
LCH, 0–130ish
OKLCH L
0.843
perceptual lightness
Tailwind
cyan
500 · ΔE 17.9
Web-safe
#CCCCFF
nearest of 216
Where it sits
Hue209° of 360°
Saturation51%
Lightness81%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #b5cfe7.

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.

Luminance by channel
Red16%
Green74%
Blue10%

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

Every format

HEX#b5cfe7
HEX (8-digit)#b5cfe7ff
RGBrgb(181, 207, 231)
RGBArgba(181, 207, 231, 1)
HSLhsl(209, 51%, 81%)
HSV / HSBhsv(209, 22%, 91%)
HWBhwb(209 71% 9%)
CMYKcmyk(22%, 10%, 0%, 9%)
LABlab(82.0 -3.6 -14.7)
LCHlch(82.0 15.2 256.3)
OKLCHoklch(0.843 0.044 246.2)
XYZ (D65)xyz(55.79, 60.22, 84.27)
Decimal11915239
Display P3color(display-p3 0.710 0.812 0.906)
Web-safe#CCCCFF

Copy-ready code

every platformclick to select
/* CSS */
color: #b5cfe7;
background-color: #b5cfe7;
/* CSS custom property */
--brand: #b5cfe7;
/* Tailwind (arbitrary) */
class="text-[#b5cfe7] bg-[#b5cfe7]"
/* SCSS */
$brand: #b5cfe7;
/* SwiftUI */
Color(red: 0.710, green: 0.812, blue: 0.906)
/* UIKit */
UIColor(red: 0.710, green: 0.812, blue: 0.906, alpha: 1)
/* Android XML */
<color name="brand">#B5CFE7</color>
/* Android Compose */
Color(0xFFB5CFE7)
/* Flutter */
Color(0xFFB5CFE7)
/* Python / OpenCV (BGR) */
(231, 207, 181)
/* Python / PIL (RGB) */
(181, 207, 231)
/* Java AWT */
new Color(181, 207, 231)
/* .NET */
Color.FromArgb(255, 181, 207, 231)
/* OpenGL / Unity (0–1) */
(0.7098f, 0.8118f, 0.9059f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{181,207,231}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #b5cfe7 85%, white);
border-color: color-mix(in oklab, #b5cfe7 40%, transparent);
/* theme-aware in one line */
color: light-dark(#1F4160, #D3E1EE);
/* relative colour syntax */
--hover: hsl(from #b5cfe7 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: #F4F7FA;
  --brand-100: #EAF0F6;
  --brand-200: #CFDEED;
  --brand-300: #b5cfe7;
  --brand-400: #80ADD6;
  --brand-500: #5691C8;
  --brand-600: #3C7DB9;
  --brand-700: #32689A;
  --brand-800: #28537B;
  --brand-900: #203E5A;
  --brand-950: #142738;
  --brand: #b5cfe7;
  --brand-ink: #000000;
  --brand-surface: #F4F7FA;
  --brand-border: #C1D7EB;
  --brand-hover: #9ABEDE;
  --brand-pressed: #7FACD6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141C24;
    --brand-ink: #D3E1EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4F7FA',
        100: '#EAF0F6',
        200: '#CFDEED',
        300: '#b5cfe7',
        400: '#80ADD6',
        500: '#5691C8',
        600: '#3C7DB9',
        700: '#32689A',
        800: '#28537B',
        900: '#203E5A',
        950: '#142738',
        DEFAULT: '#b5cfe7',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4F7FA,
  '100': #EAF0F6,
  '200': #CFDEED,
  '300': #b5cfe7,
  '400': #80ADD6,
  '500': #5691C8,
  '600': #3C7DB9,
  '700': #32689A,
  '800': #28537B,
  '900': #203E5A,
  '950': #142738,
);
$brand-base: #b5cfe7;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4F7FA", "$type": "color" },
      "100": { "$value": "#EAF0F6", "$type": "color" },
      "200": { "$value": "#CFDEED", "$type": "color" },
      "300": { "$value": "#b5cfe7", "$type": "color" },
      "400": { "$value": "#80ADD6", "$type": "color" },
      "500": { "$value": "#5691C8", "$type": "color" },
      "600": { "$value": "#3C7DB9", "$type": "color" },
      "700": { "$value": "#32689A", "$type": "color" },
      "800": { "$value": "#28537B", "$type": "color" },
      "900": { "$value": "#203E5A", "$type": "color" },
      "950": { "$value": "#142738", "$type": "color" }
    },
    "brandInk": { "$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 #b5cfe7 · 13.04:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.61:1
AA fail · AA large fail · AAA fail
Aa
Black text · 13.04:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #b5cfe7 as text scores 1.61:1 on white and 13.04:1 on black.
Best tinted ink on it, if plain black or white feels flat: #1F4160 at 6.58:1.

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
#3A7AB4 · 4.54:1
AA on white−34% L
#3A7AB4
The quick fox
#2B5B86 · 7.13:1
AAA on white−46% L
#2B5B86
The quick fox
#b5cfe7 · 13.04:1
AA on blackalready passes
#b5cfe7
The quick fox
#b5cfe7 · 13.04:1
AAA on blackalready passes
#b5cfe7

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #6098CC 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
#b5cfe7 on white: 1.61:1
AA ✗ fail · AA-large · AAA
Aa
#b5cfe7 on black: 13.04:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #b5cfe7 as text on that neutral, and that neutral as text on #b5cfe7.

NeutralRatioBoth directions
White1.61:1AaAa
Slate 501.54:1AaAa
Slate 1001.47:1AaAa
Slate 2001.31:1AaAa
Slate 3001.08:1AaAa
Slate 4001.59:1AaAa
Slate 5002.96:1AaAa
Slate 6004.71:1AaAa
Slate 7006.43:1AaAa
Slate 8009.09:1AaAa
Slate 90011.09:1AaAa
Black13.04:1AaAa
Colour vision deficiency
true color
protanopia · #C6CFE8
deuteranopia · #C0C9E7
tritanopia · #A8D5D7

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. #b5cfe7 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.

#F4F7FA
#EAF0F6
#CFDEED
#b5cfe7
#80ADD6
#5691C8
#3C7DB9
#32689A
#28537B
#203E5A
#142738
Base = 300Lightest = 50 · #F4F7FADarkest = 950 · #142738Text step on white = 700
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 0.011 246.2);
  --brand-100: oklch(0.94 0.018 246.2);
  --brand-200: oklch(0.88 0.026 246.2);
  --brand-300: oklch(0.80 0.034 246.2);
  --brand-400: oklch(0.72 0.040 246.2);
  --brand-500: oklch(0.64 0.044 246.2);
  --brand-600: oklch(0.56 0.044 246.2);
  --brand-700: oklch(0.48 0.041 246.2);
  --brand-800: oklch(0.40 0.037 246.2);
  --brand-900: oklch(0.32 0.031 246.2);
  --brand-950: oklch(0.24 0.024 246.2);
}

Colors that work with #b5cfe7

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#C1D7EB
Hairlines and dividers
Muted text#4B749B
Captions on the surface
Accent#9E472E
Second voice, not a rival
Dark variant#1F4160
Hover, pressed, headers
Light variant#ECF3F9
Selected rows, tints
Dark surface#141C24
Dark-mode background
Hover#9ABEDE
One step down in lightness
Pressed#7FACD6
Two steps down
Disabled#F3F5F7
Chroma pulled out
Focus ring#C1D9F0
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 #b5cfe7

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 #1F4160
Safe as a 1px border on white
No — use #6098CC

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.

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

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

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#E7CDB5
Analogous left#B5E7E6
Analogous right#B5B6E7
Split-complement 1#E7B5B6
Split-complement 2#E7E6B5
Triadic 1#E7B5CF
Triadic 2#CFE7B5
Tetradic#E6B5E7
On the wheel
Base+30°−30°+120°+240°+180°209°

#b5cfe7 sits at 209°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red71.0%
Green81.2%
Blue90.6%
R · 0–255
181
0xb5
G · 0–255
207
0xcf
B · 0–255
231
0xe7

CMYK percentages

Cyan21.6%
Magenta10.4%
Yellow0.0%
Key (black)9.4%

Total ink coverage is 41%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#b5cfe7 text on a black background

contrast 13.04:1

Card sample

#b5cfe7 text on a white background

contrast 1.61:1

Card sample

#b5cfe7 on grey

1.47:1

#b5cfe7 on its own surface

1.50:1

#b5cfe7 on its dark surface

10.68:1

CSS3 live lab

Text font color

The quick brown fox

color: #b5cfe7;
Background color
Panel with #b5cfe7 background
background-color: #b5cfe7;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #b5cfe7;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(181, 207, 231, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(181, 207, 231, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b5cfe7;
background: linear-gradient(135deg, #b5cfe7, #BCB5E7);
Gradient text

Gradient headline

background: linear-gradient(90deg, #b5cfe7, #C9B5E7);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #b5cfe7;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #b5cfe7;
caret-color: #b5cfe7;
Left rule
Pull quote or callout
border-left: 4px solid #b5cfe7;
Ring + tint
Selected chip
background: #ECF3F9;
box-shadow: inset 0 0 0 2px #b5cfe7;
Conic badge
68%
background: conic-gradient(#b5cfe7 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #b5cfe7 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(181, 207, 231, 0.5)
rgb(181 207 231 / 50%)
#b5cfe780
hsl(209 51% 81% / 50%)
color-mix(in srgb, #b5cfe7 50%, transparent)
Alpha8-digit hexFlat on white
10%#b5cfe71a#F8FAFD
20%#b5cfe733#F0F5FA
40%#b5cfe766#E1ECF5
60%#b5cfe799#D3E2F1
80%#b5cfe7cc#C4D9EC

Gradients from #b5cfe7

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, #E3EDF6, #b5cfe7 45%, #1F4160);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #b5cfe7, #AD9EE0);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #b5cfe7, #E7CDB5);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #F3F8FB 0%, #b5cfe7 45%, #1F4160 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F7FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #DCF4F1 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #CECCEF 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #1F4160 0%, transparent 65%), #b5cfe7;

Monochromatic scale

Palettes built from #b5cfe7

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.

#b5cfe7 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

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 13.04:1.

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.

#b5cfe7, answered

What color is #b5cfe7?

#b5cfe7 is a light vivid blue, closest to Light Steel Blue (ΔE2000 3.6). It sits at 209° on the hue wheel with 51% saturation and 81% lightness, which reads as cool.

What is the RGB value of #b5cfe7?

rgb(181, 207, 231) — 181 red, 207 green and 231 blue out of 255, or 71% / 81.2% / 90.6% by channel.

What is #b5cfe7 in HSL and HSV?

hsl(209, 51%, 81%) and hsv(209, 22%, 91%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #b5cfe7 a light or a dark color?

It is a light color. Relative luminance is 0.6022 and perceived brightness is 79%, so black text on it reaches 13.04:1.

Should I use black or white text on #b5cfe7?

Black. It scores 13.04:1 against #b5cfe7, versus 1.61:1 for white — AAA at any size.

Is #b5cfe7 accessible on a white background?

#b5cfe7 on white scores 1.61:1, which fails WCAG AA at every size. Darken it to #3A7AB4 to reach 4.5:1, or #2B5B86 for 7:1.

What is the complementary color of #b5cfe7?

#E7CDB5 sits directly opposite on the wheel. Softer options are the split-complements #E7B5B6 and #E7E6B5, which give the same contrast with far less vibration.

What colors go well with #b5cfe7?

For interface work: #F4F7FA as the surface, #C1D7EB for borders, #4B749B for secondary text, #9E472E as an accent and #1F4160 for hover and pressed states. For a palette, the analogous pair #B5E7E6 and #B5B6E7 stays calm, while #E7CDB5 is the loudest partner.

What is #b5cfe7 in CMYK for printing?

cmyk(22%, 10%, 0%, 9%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #b5cfe7 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 #B5BDE7; nudged cooler, #A1C0E2.

Which Tailwind color is closest to #b5cfe7?

The cyan family — its 500 step is #06b6d4, ΔE2000 17.9 away. That is a visible difference, so define #b5cfe7 as a custom token rather than reaching for the built-in.

How do I use #b5cfe7 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#b5cfe7] or text-[#b5cfe7], 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 #b5cfe7 with 50% opacity?

rgba(181, 207, 231, 0.5), or #b5cfe780 in eight-digit hex. Over white that composites to #DAE7F3; over black, #5B6874.

Is #b5cfe7 a web-safe color?

No. The nearest web-safe colour is #CCCCFF, ΔE2000 11.9 away. The palette only matters for legacy displays and some email clients now.

What does the color #b5cfe7 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 #b5cfe7?

The safest is same-hue elevation: linear-gradient(135deg, #E3EDF6, #b5cfe7 45%, #1F4160). For more colour, a short hue run to #AD9EE0 keeps it rich without turning muddy.

Work with #b5cfe7 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #b5cfe7 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.