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blue · cool

#b5bbc8

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

Token name suggestion: Morning Sapphire

RGB
181, 187, 200
HSL
221°, 15%, 75%
CMYK
10, 7, 0, 22
Luminance
0.4953

#b5bbc8 is a light muted blue, 221° on the wheel and 68/100 on the cool side. Put black text on it (10.91:1). As text it scores 1.93:1 on white — use #6A758E instead. Nearest name is Light Steel Blue, nearest Tailwind family is cyan.

hsl(221 15% 75%)rgb(181 187 200)Base step 300AAA inkCool

At a glance

Every number on this page in one read: what #b5bbc8 is made of, how bright it looks, and which way it leans.

Hex
#b5bbc8
Hue
221°
blue
Saturation
15%
muted
Lightness
75%
light
Brightness
78%
HSV value
Perceived
73%
weighted brightness
Luminance
0.4953
WCAG relative
Temperature
Cool
68/100 cool
Color family
Blue
Tone
Muted
Best ink
Black
10.91:1
Closest name
Light Steel Blue
ΔE2000 6.1
Chroma
7.3
LCH, 0–130ish
OKLCH L
0.791
perceptual lightness
Tailwind
cyan
500 · ΔE 22.2
Web-safe
#CCCCCC
nearest of 216
Where it sits
Hue221° of 360°
Saturation15%
Lightness75%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #b5bbc8.

Temperature
Warm ← → Cool68% 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
Red20%
Green72%
Blue8%

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

Every format

HEX#b5bbc8
HEX (8-digit)#b5bbc8ff
RGBrgb(181, 187, 200)
RGBArgba(181, 187, 200, 1)
HSLhsl(221, 15%, 75%)
HSV / HSBhsv(221, 9%, 78%)
HWBhwb(221 71% 22%)
CMYKcmyk(10%, 7%, 0%, 22%)
LABlab(75.8 0.5 -7.3)
LCHlch(75.8 7.3 273.7)
OKLCHoklch(0.791 0.019 266.0)
XYZ (D65)xyz(47.25, 49.53, 61.70)
Decimal11910088
Display P3color(display-p3 0.710 0.733 0.784)
Web-safe#CCCCCC

Copy-ready code

every platformclick to select
/* CSS */
color: #b5bbc8;
background-color: #b5bbc8;
/* CSS custom property */
--brand: #b5bbc8;
/* Tailwind (arbitrary) */
class="text-[#b5bbc8] bg-[#b5bbc8]"
/* SCSS */
$brand: #b5bbc8;
/* SwiftUI */
Color(red: 0.710, green: 0.733, blue: 0.784)
/* UIKit */
UIColor(red: 0.710, green: 0.733, blue: 0.784, alpha: 1)
/* Android XML */
<color name="brand">#B5BBC8</color>
/* Android Compose */
Color(0xFFB5BBC8)
/* Flutter */
Color(0xFFB5BBC8)
/* Python / OpenCV (BGR) */
(200, 187, 181)
/* Python / PIL (RGB) */
(181, 187, 200)
/* Java AWT */
new Color(181, 187, 200)
/* .NET */
Color.FromArgb(255, 181, 187, 200)
/* OpenGL / Unity (0–1) */
(0.7098f, 0.7333f, 0.7843f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{181,187,200}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #b5bbc8 85%, white);
border-color: color-mix(in oklab, #b5bbc8 40%, transparent);
/* theme-aware in one line */
color: light-dark(#363C49, #DCDFE5);
/* relative colour syntax */
--hover: hsl(from #b5bbc8 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: #F6F7F8;
  --brand-100: #EEEFF1;
  --brand-200: #DADCE2;
  --brand-300: #b5bbc8;
  --brand-400: #9EA6B7;
  --brand-500: #7E899F;
  --brand-600: #68748C;
  --brand-700: #576075;
  --brand-800: #464D5E;
  --brand-900: #353A45;
  --brand-950: #21242B;
  --brand: #b5bbc8;
  --brand-ink: #000000;
  --brand-surface: #F6F7F8;
  --brand-border: #D0D4DC;
  --brand-hover: #A1A8B9;
  --brand-pressed: #8C95AA;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #181B20;
    --brand-ink: #DCDFE5;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F6F7F8',
        100: '#EEEFF1',
        200: '#DADCE2',
        300: '#b5bbc8',
        400: '#9EA6B7',
        500: '#7E899F',
        600: '#68748C',
        700: '#576075',
        800: '#464D5E',
        900: '#353A45',
        950: '#21242B',
        DEFAULT: '#b5bbc8',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F6F7F8,
  '100': #EEEFF1,
  '200': #DADCE2,
  '300': #b5bbc8,
  '400': #9EA6B7,
  '500': #7E899F,
  '600': #68748C,
  '700': #576075,
  '800': #464D5E,
  '900': #353A45,
  '950': #21242B,
);
$brand-base: #b5bbc8;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F6F7F8", "$type": "color" },
      "100": { "$value": "#EEEFF1", "$type": "color" },
      "200": { "$value": "#DADCE2", "$type": "color" },
      "300": { "$value": "#b5bbc8", "$type": "color" },
      "400": { "$value": "#9EA6B7", "$type": "color" },
      "500": { "$value": "#7E899F", "$type": "color" },
      "600": { "$value": "#68748C", "$type": "color" },
      "700": { "$value": "#576075", "$type": "color" },
      "800": { "$value": "#464D5E", "$type": "color" },
      "900": { "$value": "#353A45", "$type": "color" },
      "950": { "$value": "#21242B", "$type": "color" }
    },
    "brandInk": { "$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 #b5bbc8 · 10.91:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.93:1
AA fail · AA large fail · AAA fail
Aa
Black text · 10.91:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #b5bbc8 as text scores 1.93:1 on white and 10.91:1 on black.
Best tinted ink on it, if plain black or white feels flat: #363C49 at 5.74:1.

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
#6A758E · 4.62:1
AA on white−26% L
#6A758E
The quick fox
#50586B · 7.12:1
AAA on white−38% L
#50586B
The quick fox
#b5bbc8 · 10.91:1
AA on blackalready passes
#b5bbc8
The quick fox
#b5bbc8 · 10.91:1
AAA on blackalready passes
#b5bbc8

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #8C95AA 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
#b5bbc8 on white: 1.93:1
AA ✗ fail · AA-large · AAA
Aa
#b5bbc8 on black: 10.91:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #b5bbc8 as text on that neutral, and that neutral as text on #b5bbc8.

NeutralRatioBoth directions
White1.93:1AaAa
Slate 501.84:1AaAa
Slate 1001.76:1AaAa
Slate 2001.56:1AaAa
Slate 3001.30:1AaAa
Slate 4001.33:1AaAa
Slate 5002.47:1AaAa
Slate 6003.94:1AaAa
Slate 7005.38:1AaAa
Slate 8007.60:1AaAa
Slate 9009.27:1AaAa
Black10.91:1AaAa
Colour vision deficiency
true color
protanopia · #B7BCC9
deuteranopia · #B6BAC8
tritanopia · #B1BDBF

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. #b5bbc8 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.

#F6F7F8
#EEEFF1
#DADCE2
#b5bbc8
#9EA6B7
#7E899F
#68748C
#576075
#464D5E
#353A45
#21242B
Base = 300Lightest = 50 · #F6F7F8Darkest = 950 · #21242BText step on white = 600
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 0.005 266.0);
  --brand-100: oklch(0.94 0.008 266.0);
  --brand-200: oklch(0.88 0.012 266.0);
  --brand-300: oklch(0.80 0.015 266.0);
  --brand-400: oklch(0.72 0.018 266.0);
  --brand-500: oklch(0.64 0.019 266.0);
  --brand-600: oklch(0.56 0.019 266.0);
  --brand-700: oklch(0.48 0.018 266.0);
  --brand-800: oklch(0.40 0.016 266.0);
  --brand-900: oklch(0.32 0.014 266.0);
  --brand-950: oklch(0.24 0.011 266.0);
}

Colors that work with #b5bbc8

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#F6F7F8
Tinted page background
Border#D0D4DC
Hairlines and dividers
Muted text#626D84
Captions on the surface
Accent#7A6452
Second voice, not a rival
Dark variant#363C49
Hover, pressed, headers
Light variant#F0F2F4
Selected rows, tints
Dark surface#181B20
Dark-mode background
Hover#A1A8B9
One step down in lightness
Pressed#8C95AA
Two steps down
Disabled#F3F4F6
Chroma pulled out
Focus ring#BBC4D6
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 #b5bbc8

Derived from its contrast, chroma and lightness — not from taste.

Works well for
  • Text and icons on dark surfaces
  • Borders, dividers and quiet backgrounds
  • Long-form reading surfaces
  • Card and section backgrounds
  • Brand accents, badges and data highlights
Use with care
  • Text of any size on white — fails WCAG AA
  • 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 #363C49
Safe as a 1px border on white
No — use #8C95AA

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.

With almost no chroma left, the family association is barely present; treat it as a neutral that happens to lean this way. 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
  • EnergyLow
  • Weight25/100
  • 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#C8C2B5
Analogous left#B5C4C8
Analogous right#B9B5C8
Split-complement 1#C8B9B5
Split-complement 2#C4C8B5
Triadic 1#C8B5BB
Triadic 2#BBC8B5
Tetradic#C8B5C4
On the wheel
Base+30°−30°+120°+240°+180°221°

#b5bbc8 sits at 221°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red71.0%
Green73.3%
Blue78.4%
R · 0–255
181
0xb5
G · 0–255
187
0xbb
B · 0–255
200
0xc8

CMYK percentages

Cyan9.5%
Magenta6.5%
Yellow0.0%
Key (black)21.6%

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

Color previews

#b5bbc8 text on a black background

contrast 10.91:1

Card sample

#b5bbc8 text on a white background

contrast 1.93:1

Card sample

#b5bbc8 on grey

1.76:1

#b5bbc8 on its own surface

1.80:1

#b5bbc8 on its dark surface

8.97:1

CSS3 live lab

Text font color

The quick brown fox

color: #b5bbc8;
Background color
Panel with #b5bbc8 background
background-color: #b5bbc8;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #b5bbc8;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(181, 187, 200, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(181, 187, 200, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b5bbc8;
background: linear-gradient(135deg, #b5bbc8, #BCB5C8);
Gradient text

Gradient headline

background: linear-gradient(90deg, #b5bbc8, #C0B5C8);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #b5bbc8;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #b5bbc8;
caret-color: #b5bbc8;
Left rule
Pull quote or callout
border-left: 4px solid #b5bbc8;
Ring + tint
Selected chip
background: #F0F2F4;
box-shadow: inset 0 0 0 2px #b5bbc8;
Conic badge
68%
background: conic-gradient(#b5bbc8 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #b5bbc8 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, 187, 200, 0.5)
rgb(181 187 200 / 50%)
#b5bbc880
hsl(221 15% 75% / 50%)
color-mix(in srgb, #b5bbc8 50%, transparent)
Alpha8-digit hexFlat on white
10%#b5bbc81a#F8F8FA
20%#b5bbc833#F0F1F4
40%#b5bbc866#E1E4E9
60%#b5bbc899#D3D6DE
80%#b5bbc8cc#C4C9D3

Gradients from #b5bbc8

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, #D8DBE2, #b5bbc8 45%, #363C49);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #b5bbc8, #AEA3BB);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #b5bbc8, #C8C2B5);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #EAEBEF 0%, #b5bbc8 45%, #363C49 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F6F7F8, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #D2DDDE 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #CAC7D5 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #363C49 0%, transparent 65%), #b5bbc8;

Monochromatic scale

Palettes built from #b5bbc8

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.

#b5bbc8 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
BackgroundsBordersBody textDividers
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 10.91:1.

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.

#b5bbc8, answered

What color is #b5bbc8?

#b5bbc8 is a light muted blue, closest to Light Steel Blue (ΔE2000 6.1). It sits at 221° on the hue wheel with 15% saturation and 75% lightness, which reads as cool.

What is the RGB value of #b5bbc8?

rgb(181, 187, 200) — 181 red, 187 green and 200 blue out of 255, or 71% / 73.3% / 78.4% by channel.

What is #b5bbc8 in HSL and HSV?

hsl(221, 15%, 75%) and hsv(221, 9%, 78%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #b5bbc8 a light or a dark color?

It is a mid-tone. Relative luminance is 0.4953 and perceived brightness is 73%, so black text on it reaches 10.91:1.

Should I use black or white text on #b5bbc8?

Black. It scores 10.91:1 against #b5bbc8, versus 1.93:1 for white — AAA at any size.

Is #b5bbc8 accessible on a white background?

#b5bbc8 on white scores 1.93:1, which fails WCAG AA at every size. Darken it to #6A758E to reach 4.5:1, or #50586B for 7:1.

What is the complementary color of #b5bbc8?

#C8C2B5 sits directly opposite on the wheel. Softer options are the split-complements #C8B9B5 and #C4C8B5, which give the same contrast with far less vibration.

What colors go well with #b5bbc8?

For interface work: #F6F7F8 as the surface, #D0D4DC for borders, #626D84 for secondary text, #7A6452 as an accent and #363C49 for hover and pressed states. For a palette, the analogous pair #B5C4C8 and #B9B5C8 stays calm, while #C8C2B5 is the loudest partner.

What is #b5bbc8 in CMYK for printing?

cmyk(10%, 7%, 0%, 22%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #b5bbc8 warm or cool?

Cool — it scores 68 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #B6B5C8; nudged cooler, #B4BEC9.

Which Tailwind color is closest to #b5bbc8?

The cyan family — its 500 step is #06b6d4, ΔE2000 22.2 away. That is a visible difference, so define #b5bbc8 as a custom token rather than reaching for the built-in.

How do I use #b5bbc8 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#b5bbc8] or text-[#b5bbc8], 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 #b5bbc8 with 50% opacity?

rgba(181, 187, 200, 0.5), or #b5bbc880 in eight-digit hex. Over white that composites to #DADDE4; over black, #5B5E64.

Is #b5bbc8 a web-safe color?

No. The nearest web-safe colour is #CCCCCC, ΔE2000 7.6 away. The palette only matters for legacy displays and some email clients now.

What does the color #b5bbc8 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 low chroma the association is faint; it behaves more like a neutral.

What gradient works with #b5bbc8?

The safest is same-hue elevation: linear-gradient(135deg, #D8DBE2, #b5bbc8 45%, #363C49). For more colour, a short hue run to #AEA3BB keeps it rich without turning muddy.

Work with #b5bbc8 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #b5bbc8 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.