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blue · cool

#acbdcf

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

Token name suggestion: Meadow Cobalt

RGB
172, 189, 207
HSL
211°, 27%, 74%
CMYK
17, 9, 0, 19
Luminance
0.4967

#acbdcf is a light soft blue, 211° on the wheel and 88/100 on the cool side. Put black text on it (10.93:1). As text it scores 1.92:1 on white — use #587899 instead. Nearest name is Light Steel Blue, nearest Tailwind family is cyan.

hsl(211 27% 74%)rgb(172 189 207)Base step 300AAA inkCool

At a glance

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

Hex
#acbdcf
Hue
211°
blue
Saturation
27%
soft
Lightness
74%
light
Brightness
81%
HSV value
Perceived
73%
weighted brightness
Luminance
0.4967
WCAG relative
Temperature
Cool
88/100 cool
Color family
Blue
Tone
Soft
Best ink
Black
10.93:1
Closest name
Light Steel Blue
ΔE2000 3.4
Chroma
11.2
LCH, 0–130ish
OKLCH L
0.791
perceptual lightness
Tailwind
cyan
500 · ΔE 17.9
Web-safe
#99CCCC
nearest of 216
Where it sits
Hue211° of 360°
Saturation27%
Lightness74%
Saturation × lightness field

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

Temperature
Warm ← → Cool88% 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
Red18%
Green73%
Blue9%

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

Every format

HEX#acbdcf
HEX (8-digit)#acbdcfff
RGBrgb(172, 189, 207)
RGBArgba(172, 189, 207, 1)
HSLhsl(211, 27%, 74%)
HSV / HSBhsv(211, 17%, 81%)
HWBhwb(211 67% 19%)
CMYKcmyk(17%, 9%, 0%, 19%)
LABlab(75.9 -2.1 -11.0)
LCHlch(75.9 11.2 259.3)
OKLCHoklch(0.791 0.032 249.8)
XYZ (D65)xyz(46.47, 49.67, 66.16)
Decimal11320783
Display P3color(display-p3 0.675 0.741 0.812)
Web-safe#99CCCC

Copy-ready code

every platformclick to select
/* CSS */
color: #acbdcf;
background-color: #acbdcf;
/* CSS custom property */
--brand: #acbdcf;
/* Tailwind (arbitrary) */
class="text-[#acbdcf] bg-[#acbdcf]"
/* SCSS */
$brand: #acbdcf;
/* SwiftUI */
Color(red: 0.675, green: 0.741, blue: 0.812)
/* UIKit */
UIColor(red: 0.675, green: 0.741, blue: 0.812, alpha: 1)
/* Android XML */
<color name="brand">#ACBDCF</color>
/* Android Compose */
Color(0xFFACBDCF)
/* Flutter */
Color(0xFFACBDCF)
/* Python / OpenCV (BGR) */
(207, 189, 172)
/* Python / PIL (RGB) */
(172, 189, 207)
/* Java AWT */
new Color(172, 189, 207)
/* .NET */
Color.FromArgb(255, 172, 189, 207)
/* OpenGL / Unity (0–1) */
(0.6745f, 0.7412f, 0.8118f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{172,189,207}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #acbdcf 85%, white);
border-color: color-mix(in oklab, #acbdcf 40%, transparent);
/* theme-aware in one line */
color: light-dark(#2F3F51, #D8E0E9);
/* relative colour syntax */
--hover: hsl(from #acbdcf 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: #F6F7F9;
  --brand-100: #EDF0F3;
  --brand-200: #D6DEE6;
  --brand-300: #acbdcf;
  --brand-400: #94AAC1;
  --brand-500: #718EAD;
  --brand-600: #5A799B;
  --brand-700: #4B6581;
  --brand-800: #3C5167;
  --brand-900: #2E3D4C;
  --brand-950: #1D2630;
  --brand: #acbdcf;
  --brand-ink: #000000;
  --brand-surface: #F5F7F9;
  --brand-border: #CBD6E1;
  --brand-hover: #95ABC2;
  --brand-pressed: #7F99B5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #151C24;
    --brand-ink: #D8E0E9;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F6F7F9',
        100: '#EDF0F3',
        200: '#D6DEE6',
        300: '#acbdcf',
        400: '#94AAC1',
        500: '#718EAD',
        600: '#5A799B',
        700: '#4B6581',
        800: '#3C5167',
        900: '#2E3D4C',
        950: '#1D2630',
        DEFAULT: '#acbdcf',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F6F7F9,
  '100': #EDF0F3,
  '200': #D6DEE6,
  '300': #acbdcf,
  '400': #94AAC1,
  '500': #718EAD,
  '600': #5A799B,
  '700': #4B6581,
  '800': #3C5167,
  '900': #2E3D4C,
  '950': #1D2630,
);
$brand-base: #acbdcf;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F6F7F9", "$type": "color" },
      "100": { "$value": "#EDF0F3", "$type": "color" },
      "200": { "$value": "#D6DEE6", "$type": "color" },
      "300": { "$value": "#acbdcf", "$type": "color" },
      "400": { "$value": "#94AAC1", "$type": "color" },
      "500": { "$value": "#718EAD", "$type": "color" },
      "600": { "$value": "#5A799B", "$type": "color" },
      "700": { "$value": "#4B6581", "$type": "color" },
      "800": { "$value": "#3C5167", "$type": "color" },
      "900": { "$value": "#2E3D4C", "$type": "color" },
      "950": { "$value": "#1D2630", "$type": "color" }
    },
    "brandInk": { "$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 #acbdcf · 10.93:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.92:1
AA fail · AA large fail · AAA fail
Aa
Black text · 10.93:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #acbdcf as text scores 1.92:1 on white and 10.93:1 on black.
Best tinted ink on it, if plain black or white feels flat: #2F3F51 at 5.61:1.

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
#587899 · 4.60:1
AA on white−27% L
#587899
The quick fox
#425972 · 7.23:1
AAA on white−39% L
#425972
The quick fox
#acbdcf · 10.93:1
AA on blackalready passes
#acbdcf
The quick fox
#acbdcf · 10.93:1
AAA on blackalready passes
#acbdcf

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #7C96B3 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
#acbdcf on white: 1.92:1
AA ✗ fail · AA-large · AAA
Aa
#acbdcf on black: 10.93:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

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

NeutralRatioBoth directions
White1.92:1AaAa
Slate 501.84:1AaAa
Slate 1001.75:1AaAa
Slate 2001.56:1AaAa
Slate 3001.29:1AaAa
Slate 4001.34:1AaAa
Slate 5002.48:1AaAa
Slate 6003.95:1AaAa
Slate 7005.39:1AaAa
Slate 8007.62:1AaAa
Slate 9009.30:1AaAa
Black10.93:1AaAa
Colour vision deficiency
true color
protanopia · #B6BDD0
deuteranopia · #B2B9CF
tritanopia · #A3C1C3

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. #acbdcf 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.

#F6F7F9
#EDF0F3
#D6DEE6
#acbdcf
#94AAC1
#718EAD
#5A799B
#4B6581
#3C5167
#2E3D4C
#1D2630
Base = 300Lightest = 50 · #F6F7F9Darkest = 950 · #1D2630Text 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 0.008 249.8);
  --brand-100: oklch(0.94 0.013 249.8);
  --brand-200: oklch(0.88 0.019 249.8);
  --brand-300: oklch(0.80 0.025 249.8);
  --brand-400: oklch(0.72 0.029 249.8);
  --brand-500: oklch(0.64 0.032 249.8);
  --brand-600: oklch(0.56 0.032 249.8);
  --brand-700: oklch(0.48 0.030 249.8);
  --brand-800: oklch(0.40 0.027 249.8);
  --brand-900: oklch(0.32 0.022 249.8);
  --brand-950: oklch(0.24 0.017 249.8);
}

Colors that work with #acbdcf

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#F5F7F9
Tinted page background
Border#CBD6E1
Hairlines and dividers
Muted text#547291
Captions on the surface
Accent#865746
Second voice, not a rival
Dark variant#2F3F51
Hover, pressed, headers
Light variant#EFF2F6
Selected rows, tints
Dark surface#151C24
Dark-mode background
Hover#95ABC2
One step down in lightness
Pressed#7F99B5
Two steps down
Disabled#F3F5F7
Chroma pulled out
Focus ring#B3C7DC
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 #acbdcf

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 #2F3F51
Safe as a 1px border on white
No — use #7C96B3

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
  • Weight26/100
  • 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#CFBEAC
Analogous left#ACCECF
Analogous right#ACACCF
Split-complement 1#CFACAC
Split-complement 2#CECFAC
Triadic 1#CFACBD
Triadic 2#BDCFAC
Tetradic#CFACCE
On the wheel
Base+30°−30°+120°+240°+180°211°

#acbdcf sits at 211°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red67.5%
Green74.1%
Blue81.2%
R · 0–255
172
0xac
G · 0–255
189
0xbd
B · 0–255
207
0xcf

CMYK percentages

Cyan16.9%
Magenta8.7%
Yellow0.0%
Key (black)18.8%

Total ink coverage is 44%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#acbdcf text on a black background

contrast 10.93:1

Card sample

#acbdcf text on a white background

contrast 1.92:1

Card sample

#acbdcf on grey

1.75:1

#acbdcf on its own surface

1.79:1

#acbdcf on its dark surface

8.94:1

CSS3 live lab

Text font color

The quick brown fox

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

Glowing headline

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

Soft neon halo

text-shadow: 0 0 14px rgba(172, 189, 207, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(172, 189, 207, 0.45);
Border & gradient
Gradient panel
border: 3px solid #acbdcf;
background: linear-gradient(135deg, #acbdcf, #B2ACCF);
Gradient text

Gradient headline

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

Marked up text

text-decoration-color: #acbdcf;
caret-color: #acbdcf;
Left rule
Pull quote or callout
border-left: 4px solid #acbdcf;
Ring + tint
Selected chip
background: #EFF2F6;
box-shadow: inset 0 0 0 2px #acbdcf;
Conic badge
68%
background: conic-gradient(#acbdcf 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #acbdcf 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(172, 189, 207, 0.5)
rgb(172 189 207 / 50%)
#acbdcf80
hsl(211 27% 74% / 50%)
color-mix(in srgb, #acbdcf 50%, transparent)
Alpha8-digit hexFlat on white
10%#acbdcf1a#F7F8FA
20%#acbdcf33#EEF2F5
40%#acbdcf66#DEE5EC
60%#acbdcf99#CDD7E2
80%#acbdcfcc#BDCAD9

Gradients from #acbdcf

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, #D3DCE5, #acbdcf 45%, #2F3F51);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #acbdcf, #A499C4);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #acbdcf, #CFBEAC);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #E6EBF1 0%, #acbdcf 45%, #2F3F51 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F5F7F9, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #CCE2E0 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #C2BFDA 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #2F3F51 0%, transparent 65%), #acbdcf;

Monochromatic scale

Palettes built from #acbdcf

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.

#acbdcf 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 10.93:1.

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.

#acbdcf, answered

What color is #acbdcf?

#acbdcf is a light soft blue, closest to Light Steel Blue (ΔE2000 3.4). It sits at 211° on the hue wheel with 27% saturation and 74% lightness, which reads as cool.

What is the RGB value of #acbdcf?

rgb(172, 189, 207) — 172 red, 189 green and 207 blue out of 255, or 67.5% / 74.1% / 81.2% by channel.

What is #acbdcf in HSL and HSV?

hsl(211, 27%, 74%) and hsv(211, 17%, 81%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #acbdcf a light or a dark color?

It is a mid-tone. Relative luminance is 0.4967 and perceived brightness is 73%, so black text on it reaches 10.93:1.

Should I use black or white text on #acbdcf?

Black. It scores 10.93:1 against #acbdcf, versus 1.92:1 for white — AAA at any size.

Is #acbdcf accessible on a white background?

#acbdcf on white scores 1.92:1, which fails WCAG AA at every size. Darken it to #587899 to reach 4.5:1, or #425972 for 7:1.

What is the complementary color of #acbdcf?

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

What colors go well with #acbdcf?

For interface work: #F5F7F9 as the surface, #CBD6E1 for borders, #547291 for secondary text, #865746 as an accent and #2F3F51 for hover and pressed states. For a palette, the analogous pair #ACCECF and #ACACCF stays calm, while #CFBEAC is the loudest partner.

What is #acbdcf in CMYK for printing?

cmyk(17%, 9%, 0%, 19%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #acbdcf warm or cool?

Cool — it scores 88 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #ACB0CF; nudged cooler, #9AB0C7.

Which Tailwind color is closest to #acbdcf?

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

How do I use #acbdcf in Tailwind CSS?

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

rgba(172, 189, 207, 0.5), or #acbdcf80 in eight-digit hex. Over white that composites to #D6DEE7; over black, #565F68.

Is #acbdcf a web-safe color?

No. The nearest web-safe colour is #99CCCC, ΔE2000 14.3 away. The palette only matters for legacy displays and some email clients now.

What does the color #acbdcf 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 #acbdcf?

The safest is same-hue elevation: linear-gradient(135deg, #D3DCE5, #acbdcf 45%, #2F3F51). For more colour, a short hue run to #A499C4 keeps it rich without turning muddy.

Work with #acbdcf in the Color Lab

Every tool opens with this colour already loaded.

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