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blue · cool

#b8b9da

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

Token name suggestion: Drift Cobalt

RGB
184, 185, 218
HSL
238°, 32%, 79%
CMYK
16, 15, 0, 15
Luminance
0.4995

#b8b9da is a light soft blue, 238° on the wheel and 81/100 on the cool side. Put black text on it (10.99:1). As text it scores 1.91:1 on white — use #6E70B4 instead. Nearest name is Light Steel Blue, nearest Tailwind family is slate.

hsl(238 32% 79%)rgb(184 185 218)Base step 300AAA inkCool

At a glance

Every number on this page in one read: what #b8b9da is made of, how bright it looks, and which way it leans.

Hex
#b8b9da
Hue
238°
blue
Saturation
32%
soft
Lightness
79%
light
Brightness
85%
HSV value
Perceived
74%
weighted brightness
Luminance
0.4995
WCAG relative
Temperature
Cool
81/100 cool
Color family
Blue
Tone
Soft
Best ink
Black
10.99:1
Closest name
Light Steel Blue
ΔE2000 8.9
Chroma
17.8
LCH, 0–130ish
OKLCH L
0.796
perceptual lightness
Tailwind
slate
500 · ΔE 24.8
Web-safe
#CCCCCC
nearest of 216
Where it sits
Hue238° of 360°
Saturation32%
Lightness79%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #b8b9da.

Temperature
Warm ← → Cool81% 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%
Green69%
Blue10%

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

Every format

HEX#b8b9da
HEX (8-digit)#b8b9daff
RGBrgb(184, 185, 218)
RGBArgba(184, 185, 218, 1)
HSLhsl(238, 32%, 79%)
HSV / HSBhsv(238, 16%, 85%)
HWBhwb(238 72% 15%)
CMYKcmyk(16%, 15%, 0%, 15%)
LABlab(76.0 6.3 -16.6)
LCHlch(76.0 17.8 290.7)
OKLCHoklch(0.796 0.046 283.9)
XYZ (D65)xyz(49.77, 49.95, 73.34)
Decimal12106202
Display P3color(display-p3 0.722 0.725 0.855)
Web-safe#CCCCCC

Copy-ready code

every platformclick to select
/* CSS */
color: #b8b9da;
background-color: #b8b9da;
/* CSS custom property */
--brand: #b8b9da;
/* Tailwind (arbitrary) */
class="text-[#b8b9da] bg-[#b8b9da]"
/* SCSS */
$brand: #b8b9da;
/* SwiftUI */
Color(red: 0.722, green: 0.725, blue: 0.855)
/* UIKit */
UIColor(red: 0.722, green: 0.725, blue: 0.855, alpha: 1)
/* Android XML */
<color name="brand">#B8B9DA</color>
/* Android Compose */
Color(0xFFB8B9DA)
/* Flutter */
Color(0xFFB8B9DA)
/* Python / OpenCV (BGR) */
(218, 185, 184)
/* Python / PIL (RGB) */
(184, 185, 218)
/* Java AWT */
new Color(184, 185, 218)
/* .NET */
Color.FromArgb(255, 184, 185, 218)
/* OpenGL / Unity (0–1) */
(0.7216f, 0.7255f, 0.8549f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{184,185,218}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #b8b9da 85%, white);
border-color: color-mix(in oklab, #b8b9da 40%, transparent);
/* theme-aware in one line */
color: light-dark(#2C2D54, #D7D7EA);
/* relative colour syntax */
--hover: hsl(from #b8b9da 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: #F5F6F9;
  --brand-100: #ECECF3;
  --brand-200: #D5D5E7;
  --brand-300: #b8b9da;
  --brand-400: #9092C5;
  --brand-500: #6B6EB2;
  --brand-600: #5456A1;
  --brand-700: #464886;
  --brand-800: #38396B;
  --brand-900: #2B2D4F;
  --brand-950: #1B1C31;
  --brand: #b8b9da;
  --brand-ink: #000000;
  --brand-surface: #F5F5FA;
  --brand-border: #C9CAE3;
  --brand-hover: #A0A2CE;
  --brand-pressed: #898BC2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141424;
    --brand-ink: #D7D7EA;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5F6F9',
        100: '#ECECF3',
        200: '#D5D5E7',
        300: '#b8b9da',
        400: '#9092C5',
        500: '#6B6EB2',
        600: '#5456A1',
        700: '#464886',
        800: '#38396B',
        900: '#2B2D4F',
        950: '#1B1C31',
        DEFAULT: '#b8b9da',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5F6F9,
  '100': #ECECF3,
  '200': #D5D5E7,
  '300': #b8b9da,
  '400': #9092C5,
  '500': #6B6EB2,
  '600': #5456A1,
  '700': #464886,
  '800': #38396B,
  '900': #2B2D4F,
  '950': #1B1C31,
);
$brand-base: #b8b9da;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F5F6F9", "$type": "color" },
      "100": { "$value": "#ECECF3", "$type": "color" },
      "200": { "$value": "#D5D5E7", "$type": "color" },
      "300": { "$value": "#b8b9da", "$type": "color" },
      "400": { "$value": "#9092C5", "$type": "color" },
      "500": { "$value": "#6B6EB2", "$type": "color" },
      "600": { "$value": "#5456A1", "$type": "color" },
      "700": { "$value": "#464886", "$type": "color" },
      "800": { "$value": "#38396B", "$type": "color" },
      "900": { "$value": "#2B2D4F", "$type": "color" },
      "950": { "$value": "#1B1C31", "$type": "color" }
    },
    "brandInk": { "$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 #b8b9da · 10.99:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.91:1
AA fail · AA large fail · AAA fail
Aa
Black text · 10.99:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #b8b9da as text scores 1.91:1 on white and 10.99:1 on black.
Best tinted ink on it, if plain black or white feels flat: #2C2D54 at 6.82:1.

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
#6E70B4 · 4.53:1
AA on white−22% L
#6E70B4
The quick fox
#4E5096 · 7.21:1
AAA on white−34% L
#4E5096
The quick fox
#b8b9da · 10.99:1
AA on blackalready passes
#b8b9da
The quick fox
#b8b9da · 10.99:1
AAA on blackalready passes
#b8b9da

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #8C8EC3 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
#b8b9da on white: 1.91:1
AA ✗ fail · AA-large · AAA
Aa
#b8b9da on black: 10.99:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #b8b9da as text on that neutral, and that neutral as text on #b8b9da.

NeutralRatioBoth directions
White1.91:1AaAa
Slate 501.83:1AaAa
Slate 1001.74:1AaAa
Slate 2001.55:1AaAa
Slate 3001.29:1AaAa
Slate 4001.34:1AaAa
Slate 5002.49:1AaAa
Slate 6003.97:1AaAa
Slate 7005.42:1AaAa
Slate 8007.66:1AaAa
Slate 9009.34:1AaAa
Black10.99:1AaAa
Colour vision deficiency
true color
protanopia · #B1BDDC
deuteranopia · #B0BAD9
tritanopia · #B1BEC4

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. #b8b9da 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.

#F5F6F9
#ECECF3
#D5D5E7
#b8b9da
#9092C5
#6B6EB2
#5456A1
#464886
#38396B
#2B2D4F
#1B1C31
Base = 300Lightest = 50 · #F5F6F9Darkest = 950 · #1B1C31Text step on white = 500
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 0.012 283.9);
  --brand-100: oklch(0.94 0.019 283.9);
  --brand-200: oklch(0.88 0.028 283.9);
  --brand-300: oklch(0.80 0.036 283.9);
  --brand-400: oklch(0.72 0.043 283.9);
  --brand-500: oklch(0.64 0.046 283.9);
  --brand-600: oklch(0.56 0.046 283.9);
  --brand-700: oklch(0.48 0.044 283.9);
  --brand-800: oklch(0.40 0.039 283.9);
  --brand-900: oklch(0.32 0.033 283.9);
  --brand-950: oklch(0.24 0.026 283.9);
}

Colors that work with #b8b9da

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#F5F5FA
Tinted page background
Border#C9CAE3
Hairlines and dividers
Muted text#4F5197
Captions on the surface
Accent#8A7542
Second voice, not a rival
Dark variant#2C2D54
Hover, pressed, headers
Light variant#EEEEF6
Selected rows, tints
Dark surface#141424
Dark-mode background
Hover#A0A2CE
One step down in lightness
Pressed#898BC2
Two steps down
Disabled#F3F3F7
Chroma pulled out
Focus ring#C1C2E5
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 #b8b9da

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

Works well for
  • Text and icons on dark surfaces
  • Charts, tags and secondary 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 #2C2D54
Safe as a 1px border on white
No — use #8C8EC3

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.

The muted chroma softens the association — it reads considered rather than loud, which suits long-form and data-heavy screens. 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
  • Weight21/100
  • 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#DAD9B8
Analogous left#B8CADA
Analogous right#C8B8DA
Split-complement 1#DAC8B8
Split-complement 2#CADAB8
Triadic 1#DAB8B9
Triadic 2#B9DAB8
Tetradic#DAB8CA
On the wheel
Base+30°−30°+120°+240°+180°238°

#b8b9da sits at 238°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red72.2%
Green72.5%
Blue85.5%
R · 0–255
184
0xb8
G · 0–255
185
0xb9
B · 0–255
218
0xda

CMYK percentages

Cyan15.6%
Magenta15.1%
Yellow0.0%
Key (black)14.5%

Total ink coverage is 45%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#b8b9da text on a black background

contrast 10.99:1

Card sample

#b8b9da text on a white background

contrast 1.91:1

Card sample

#b8b9da on grey

1.74:1

#b8b9da on its own surface

1.76:1

#b8b9da on its dark surface

9.51:1

CSS3 live lab

Text font color

The quick brown fox

color: #b8b9da;
Background color
Panel with #b8b9da background
background-color: #b8b9da;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #b8b9da;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(184, 185, 218, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(184, 185, 218, 0.45);
Border & gradient
Gradient panel
border: 3px solid #b8b9da;
background: linear-gradient(135deg, #b8b9da, #CEB8DA);
Gradient text

Gradient headline

background: linear-gradient(90deg, #b8b9da, #D6B8DA);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #b8b9da;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #b8b9da;
caret-color: #b8b9da;
Left rule
Pull quote or callout
border-left: 4px solid #b8b9da;
Ring + tint
Selected chip
background: #EEEEF6;
box-shadow: inset 0 0 0 2px #b8b9da;
Conic badge
68%
background: conic-gradient(#b8b9da 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #b8b9da 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(184, 185, 218, 0.5)
rgb(184 185 218 / 50%)
#b8b9da80
hsl(238 32% 79% / 50%)
color-mix(in srgb, #b8b9da 50%, transparent)
Alpha8-digit hexFlat on white
10%#b8b9da1a#F8F8FB
20%#b8b9da33#F1F1F8
40%#b8b9da66#E3E3F0
60%#b8b9da99#D4D5E9
80%#b8b9dacc#C6C7E1

Gradients from #b8b9da

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, #E0E1EF, #b8b9da 45%, #2C2D54);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #b8b9da, #C3A4CF);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #b8b9da, #DAD9B8);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #F4F4F9 0%, #b8b9da 45%, #2C2D54 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F5F5FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #D9E4EB 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #DACCE4 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #2C2D54 0%, transparent 65%), #b8b9da;

Monochromatic scale

Palettes built from #b8b9da

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.

#b8b9da 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 10.99:1.

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.

#b8b9da, answered

What color is #b8b9da?

#b8b9da is a light soft blue, closest to Light Steel Blue (ΔE2000 8.9). It sits at 238° on the hue wheel with 32% saturation and 79% lightness, which reads as cool.

What is the RGB value of #b8b9da?

rgb(184, 185, 218) — 184 red, 185 green and 218 blue out of 255, or 72.2% / 72.5% / 85.5% by channel.

What is #b8b9da in HSL and HSV?

hsl(238, 32%, 79%) and hsv(238, 16%, 85%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #b8b9da a light or a dark color?

It is a mid-tone. Relative luminance is 0.4995 and perceived brightness is 74%, so black text on it reaches 10.99:1.

Should I use black or white text on #b8b9da?

Black. It scores 10.99:1 against #b8b9da, versus 1.91:1 for white — AAA at any size.

Is #b8b9da accessible on a white background?

#b8b9da on white scores 1.91:1, which fails WCAG AA at every size. Darken it to #6E70B4 to reach 4.5:1, or #4E5096 for 7:1.

What is the complementary color of #b8b9da?

#DAD9B8 sits directly opposite on the wheel. Softer options are the split-complements #DAC8B8 and #CADAB8, which give the same contrast with far less vibration.

What colors go well with #b8b9da?

For interface work: #F5F5FA as the surface, #C9CAE3 for borders, #4F5197 for secondary text, #8A7542 as an accent and #2C2D54 for hover and pressed states. For a palette, the analogous pair #B8CADA and #C8B8DA stays calm, while #DAD9B8 is the loudest partner.

What is #b8b9da in CMYK for printing?

cmyk(16%, 15%, 0%, 15%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #b8b9da warm or cool?

Cool — it scores 81 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #C3B8DA; nudged cooler, #B7C5DB.

Which Tailwind color is closest to #b8b9da?

The slate family — its 500 step is #64748b, ΔE2000 24.8 away. That is a visible difference, so define #b8b9da as a custom token rather than reaching for the built-in.

How do I use #b8b9da in Tailwind CSS?

Inline it as an arbitrary value with bg-[#b8b9da] or text-[#b8b9da], 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 #b8b9da with 50% opacity?

rgba(184, 185, 218, 0.5), or #b8b9da80 in eight-digit hex. Over white that composites to #DCDCED; over black, #5C5D6D.

Is #b8b9da a web-safe color?

No. The nearest web-safe colour is #CCCCCC, ΔE2000 14 away. The palette only matters for legacy displays and some email clients now.

What does the color #b8b9da 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 moderate chroma the association is present but not shouted.

What gradient works with #b8b9da?

The safest is same-hue elevation: linear-gradient(135deg, #E0E1EF, #b8b9da 45%, #2C2D54). For more colour, a short hue run to #C3A4CF keeps it rich without turning muddy.

Work with #b8b9da in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #b8b9da at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.