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blue · cool

#adbfd9

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

Token name suggestion: Linen Sapphire

RGB
173, 191, 217
HSL
216°, 37%, 77%
CMYK
20, 12, 0, 15
Luminance
0.5116

#adbfd9 is a light soft blue, 216° on the wheel and 97/100 on the cool side. Put black text on it (11.23:1). As text it scores 1.87:1 on white — use #5278AF instead. Nearest name is Light Steel Blue, nearest Tailwind family is sky.

hsl(216 37% 77%)rgb(173 191 217)Base step 300AAA inkCool

At a glance

Every number on this page in one read: what #adbfd9 is made of, how bright it looks, and which way it leans.

Hex
#adbfd9
Hue
216°
blue
Saturation
37%
soft
Lightness
77%
light
Brightness
85%
HSV value
Perceived
74%
weighted brightness
Luminance
0.5116
WCAG relative
Temperature
Cool
97/100 cool
Color family
Blue
Tone
Soft
Best ink
Black
11.23:1
Closest name
Light Steel Blue
ΔE2000 1.4
Chroma
15.1
LCH, 0–130ish
OKLCH L
0.799
perceptual lightness
Tailwind
sky
500 · ΔE 18.4
Web-safe
#99CCCC
nearest of 216
Where it sits
Hue216° of 360°
Saturation37%
Lightness77%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #adbfd9.

Temperature
Warm ← → Cool97% 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
Red17%
Green73%
Blue10%

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

Every format

HEX#adbfd9
HEX (8-digit)#adbfd9ff
RGBrgb(173, 191, 217)
RGBArgba(173, 191, 217, 1)
HSLhsl(216, 37%, 77%)
HSV / HSBhsv(215, 20%, 85%)
HWBhwb(216 68% 15%)
CMYKcmyk(20%, 12%, 0%, 15%)
LABlab(76.8 -0.7 -15.1)
LCHlch(76.8 15.1 267.5)
OKLCHoklch(0.799 0.042 257.5)
XYZ (D65)xyz(48.39, 51.15, 72.96)
Decimal11386841
Display P3color(display-p3 0.678 0.749 0.851)
Web-safe#99CCCC

Copy-ready code

every platformclick to select
/* CSS */
color: #adbfd9;
background-color: #adbfd9;
/* CSS custom property */
--brand: #adbfd9;
/* Tailwind (arbitrary) */
class="text-[#adbfd9] bg-[#adbfd9]"
/* SCSS */
$brand: #adbfd9;
/* SwiftUI */
Color(red: 0.678, green: 0.749, blue: 0.851)
/* UIKit */
UIColor(red: 0.678, green: 0.749, blue: 0.851, alpha: 1)
/* Android XML */
<color name="brand">#ADBFD9</color>
/* Android Compose */
Color(0xFFADBFD9)
/* Flutter */
Color(0xFFADBFD9)
/* Python / OpenCV (BGR) */
(217, 191, 173)
/* Python / PIL (RGB) */
(173, 191, 217)
/* Java AWT */
new Color(173, 191, 217)
/* .NET */
Color.FromArgb(255, 173, 191, 217)
/* OpenGL / Unity (0–1) */
(0.6784f, 0.7490f, 0.8510f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{173,191,217}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #adbfd9 85%, white);
border-color: color-mix(in oklab, #adbfd9 40%, transparent);
/* theme-aware in one line */
color: light-dark(#283B57, #D5DEEC);
/* relative colour syntax */
--hover: hsl(from #adbfd9 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: #F5F7FA;
  --brand-100: #EBEFF4;
  --brand-200: #D3DCE9;
  --brand-300: #adbfd9;
  --brand-400: #8CA5CA;
  --brand-500: #6687B8;
  --brand-600: #4D72A7;
  --brand-700: #415F8B;
  --brand-800: #344C70;
  --brand-900: #293952;
  --brand-950: #192433;
  --brand: #adbfd9;
  --brand-ink: #000000;
  --brand-surface: #F5F7FA;
  --brand-border: #C7D3E5;
  --brand-hover: #95ACCE;
  --brand-pressed: #7C99C2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141B24;
    --brand-ink: #D5DEEC;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5F7FA',
        100: '#EBEFF4',
        200: '#D3DCE9',
        300: '#adbfd9',
        400: '#8CA5CA',
        500: '#6687B8',
        600: '#4D72A7',
        700: '#415F8B',
        800: '#344C70',
        900: '#293952',
        950: '#192433',
        DEFAULT: '#adbfd9',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5F7FA,
  '100': #EBEFF4,
  '200': #D3DCE9,
  '300': #adbfd9,
  '400': #8CA5CA,
  '500': #6687B8,
  '600': #4D72A7,
  '700': #415F8B,
  '800': #344C70,
  '900': #293952,
  '950': #192433,
);
$brand-base: #adbfd9;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F5F7FA", "$type": "color" },
      "100": { "$value": "#EBEFF4", "$type": "color" },
      "200": { "$value": "#D3DCE9", "$type": "color" },
      "300": { "$value": "#adbfd9", "$type": "color" },
      "400": { "$value": "#8CA5CA", "$type": "color" },
      "500": { "$value": "#6687B8", "$type": "color" },
      "600": { "$value": "#4D72A7", "$type": "color" },
      "700": { "$value": "#415F8B", "$type": "color" },
      "800": { "$value": "#344C70", "$type": "color" },
      "900": { "$value": "#293952", "$type": "color" },
      "950": { "$value": "#192433", "$type": "color" }
    },
    "brandInk": { "$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 #adbfd9 · 11.23:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.87:1
AA fail · AA large fail · AAA fail
Aa
Black text · 11.23:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #adbfd9 as text scores 1.87:1 on white and 11.23:1 on black.
Best tinted ink on it, if plain black or white feels flat: #283B57 at 6.06:1.

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
#5278AF · 4.50:1
AA on white−26% L
#5278AF
The quick fox
#3D5983 · 7.11:1
AAA on white−39% L
#3D5983
The quick fox
#adbfd9 · 11.23:1
AA on blackalready passes
#adbfd9
The quick fox
#adbfd9 · 11.23:1
AAA on blackalready passes
#adbfd9

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #7996C1 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
#adbfd9 on white: 1.87:1
AA ✗ fail · AA-large · AAA
Aa
#adbfd9 on black: 11.23:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #adbfd9 as text on that neutral, and that neutral as text on #adbfd9.

NeutralRatioBoth directions
White1.87:1AaAa
Slate 501.79:1AaAa
Slate 1001.71:1AaAa
Slate 2001.52:1AaAa
Slate 3001.26:1AaAa
Slate 4001.37:1AaAa
Slate 5002.55:1AaAa
Slate 6004.05:1AaAa
Slate 7005.54:1AaAa
Slate 8007.82:1AaAa
Slate 9009.55:1AaAa
Black11.23:1AaAa
Colour vision deficiency
true color
protanopia · #B6C0DA
deuteranopia · #B2BCD8
tritanopia · #A2C4C7

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. #adbfd9 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.

#F5F7FA
#EBEFF4
#D3DCE9
#adbfd9
#8CA5CA
#6687B8
#4D72A7
#415F8B
#344C70
#293952
#192433
Base = 300Lightest = 50 · #F5F7FADarkest = 950 · #192433Text 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 0.010 257.5);
  --brand-100: oklch(0.94 0.017 257.5);
  --brand-200: oklch(0.88 0.025 257.5);
  --brand-300: oklch(0.80 0.033 257.5);
  --brand-400: oklch(0.72 0.039 257.5);
  --brand-500: oklch(0.64 0.042 257.5);
  --brand-600: oklch(0.56 0.042 257.5);
  --brand-700: oklch(0.48 0.039 257.5);
  --brand-800: oklch(0.40 0.035 257.5);
  --brand-900: oklch(0.32 0.029 257.5);
  --brand-950: oklch(0.24 0.023 257.5);
}

Colors that work with #adbfd9

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#F5F7FA
Tinted page background
Border#C7D3E5
Hairlines and dividers
Muted text#4B6B9B
Captions on the surface
Accent#8F583D
Second voice, not a rival
Dark variant#283B57
Hover, pressed, headers
Light variant#EEF1F7
Selected rows, tints
Dark surface#141B24
Dark-mode background
Hover#95ACCE
One step down in lightness
Pressed#7C99C2
Two steps down
Disabled#F3F4F7
Chroma pulled out
Focus ring#B6C9E4
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 #adbfd9

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 #283B57
Safe as a 1px border on white
No — use #7996C1

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
  • Weight24/100
  • 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#D9C7AD
Analogous left#ADD5D9
Analogous right#B1ADD9
Split-complement 1#D9B1AD
Split-complement 2#D5D9AD
Triadic 1#D9ADBF
Triadic 2#BFD9AD
Tetradic#D9ADD5
On the wheel
Base+30°−30°+120°+240°+180°216°

#adbfd9 sits at 216°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red67.8%
Green74.9%
Blue85.1%
R · 0–255
173
0xad
G · 0–255
191
0xbf
B · 0–255
217
0xd9

CMYK percentages

Cyan20.3%
Magenta12.0%
Yellow0.0%
Key (black)14.9%

Total ink coverage is 47%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#adbfd9 text on a black background

contrast 11.23:1

Card sample

#adbfd9 text on a white background

contrast 1.87:1

Card sample

#adbfd9 on grey

1.71:1

#adbfd9 on its own surface

1.74:1

#adbfd9 on its dark surface

9.27:1

CSS3 live lab

Text font color

The quick brown fox

color: #adbfd9;
Background color
Panel with #adbfd9 background
background-color: #adbfd9;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #adbfd9;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(173, 191, 217, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(173, 191, 217, 0.45);
Border & gradient
Gradient panel
border: 3px solid #adbfd9;
background: linear-gradient(135deg, #adbfd9, #B8ADD9);
Gradient text

Gradient headline

background: linear-gradient(90deg, #adbfd9, #C3ADD9);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #adbfd9;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #adbfd9;
caret-color: #adbfd9;
Left rule
Pull quote or callout
border-left: 4px solid #adbfd9;
Ring + tint
Selected chip
background: #EEF1F7;
box-shadow: inset 0 0 0 2px #adbfd9;
Conic badge
68%
background: conic-gradient(#adbfd9 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #adbfd9 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(173, 191, 217, 0.5)
rgb(173 191 217 / 50%)
#adbfd980
hsl(216 37% 77% / 50%)
color-mix(in srgb, #adbfd9 50%, transparent)
Alpha8-digit hexFlat on white
10%#adbfd91a#F7F9FB
20%#adbfd933#EFF2F7
40%#adbfd966#DEE5F0
60%#adbfd999#CED9E8
80%#adbfd9cc#BDCCE1

Gradients from #adbfd9

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, #D7E0EC, #adbfd9 45%, #283B57);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #adbfd9, #AB98CF);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #adbfd9, #D9C7AD);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #ECF0F6 0%, #adbfd9 45%, #283B57 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F5F7FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #D0E9E9 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #C8C2E3 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #283B57 0%, transparent 65%), #adbfd9;

Monochromatic scale

Palettes built from #adbfd9

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.

#adbfd9 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 11.23:1.

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.

#adbfd9, answered

What color is #adbfd9?

#adbfd9 is a light soft blue, closest to Light Steel Blue (ΔE2000 1.4). It sits at 216° on the hue wheel with 37% saturation and 77% lightness, which reads as cool.

What is the RGB value of #adbfd9?

rgb(173, 191, 217) — 173 red, 191 green and 217 blue out of 255, or 67.8% / 74.9% / 85.1% by channel.

What is #adbfd9 in HSL and HSV?

hsl(216, 37%, 77%) and hsv(215, 20%, 85%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #adbfd9 a light or a dark color?

It is a light color. Relative luminance is 0.5116 and perceived brightness is 74%, so black text on it reaches 11.23:1.

Should I use black or white text on #adbfd9?

Black. It scores 11.23:1 against #adbfd9, versus 1.87:1 for white — AAA at any size.

Is #adbfd9 accessible on a white background?

#adbfd9 on white scores 1.87:1, which fails WCAG AA at every size. Darken it to #5278AF to reach 4.5:1, or #3D5983 for 7:1.

What is the complementary color of #adbfd9?

#D9C7AD sits directly opposite on the wheel. Softer options are the split-complements #D9B1AD and #D5D9AD, which give the same contrast with far less vibration.

What colors go well with #adbfd9?

For interface work: #F5F7FA as the surface, #C7D3E5 for borders, #4B6B9B for secondary text, #8F583D as an accent and #283B57 for hover and pressed states. For a palette, the analogous pair #ADD5D9 and #B1ADD9 stays calm, while #D9C7AD is the loudest partner.

What is #adbfd9 in CMYK for printing?

cmyk(20%, 12%, 0%, 15%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #adbfd9 warm or cool?

Cool — it scores 97 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #ADAFD9; nudged cooler, #9AB4D2.

Which Tailwind color is closest to #adbfd9?

The sky family — its 500 step is #0ea5e9, ΔE2000 18.4 away. That is a visible difference, so define #adbfd9 as a custom token rather than reaching for the built-in.

How do I use #adbfd9 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#adbfd9] or text-[#adbfd9], 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 #adbfd9 with 50% opacity?

rgba(173, 191, 217, 0.5), or #adbfd980 in eight-digit hex. Over white that composites to #D6DFEC; over black, #57606D.

Is #adbfd9 a web-safe color?

No. The nearest web-safe colour is #99CCCC, ΔE2000 16.3 away. The palette only matters for legacy displays and some email clients now.

What does the color #adbfd9 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 #adbfd9?

The safest is same-hue elevation: linear-gradient(135deg, #D7E0EC, #adbfd9 45%, #283B57). For more colour, a short hue run to #AB98CF keeps it rich without turning muddy.

Work with #adbfd9 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #adbfd9 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.