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blue · cool

#aabfd4

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

Token name suggestion: Morning Sapphire

RGB
170, 191, 212
HSL
210°, 33%, 75%
CMYK
20, 10, 0, 17
Luminance
0.5056

#aabfd4 is a light soft blue, 210° on the wheel and 97/100 on the cool side. Put black text on it (11.11:1). As text it scores 1.89:1 on white — use #527AA2 instead. Nearest name is Light Steel Blue, nearest Tailwind family is sky.

hsl(210 33% 75%)rgb(170 191 212)Base step 300AAA inkCool

At a glance

Every number on this page in one read: what #aabfd4 is made of, how bright it looks, and which way it leans.

Hex
#aabfd4
Hue
210°
blue
Saturation
33%
soft
Lightness
75%
light
Brightness
83%
HSV value
Perceived
74%
weighted brightness
Luminance
0.5056
WCAG relative
Temperature
Cool
97/100 cool
Color family
Blue
Tone
Soft
Best ink
Black
11.11:1
Closest name
Light Steel Blue
ΔE2000 2.6
Chroma
13.2
LCH, 0–130ish
OKLCH L
0.795
perceptual lightness
Tailwind
sky
500 · ΔE 17.1
Web-safe
#99CCCC
nearest of 216
Where it sits
Hue210° of 360°
Saturation33%
Lightness75%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #aabfd4.

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%
Green74%
Blue9%

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

Every format

HEX#aabfd4
HEX (8-digit)#aabfd4ff
RGBrgb(170, 191, 212)
RGBArgba(170, 191, 212, 1)
HSLhsl(210, 33%, 75%)
HSV / HSBhsv(210, 20%, 83%)
HWBhwb(210 67% 17%)
CMYKcmyk(20%, 10%, 0%, 17%)
LABlab(76.4 -2.7 -12.9)
LCHlch(76.4 13.2 258.2)
OKLCHoklch(0.795 0.038 248.3)
XYZ (D65)xyz(47.09, 50.56, 69.55)
Decimal11190228
Display P3color(display-p3 0.667 0.749 0.831)
Web-safe#99CCCC

Copy-ready code

every platformclick to select
/* CSS */
color: #aabfd4;
background-color: #aabfd4;
/* CSS custom property */
--brand: #aabfd4;
/* Tailwind (arbitrary) */
class="text-[#aabfd4] bg-[#aabfd4]"
/* SCSS */
$brand: #aabfd4;
/* SwiftUI */
Color(red: 0.667, green: 0.749, blue: 0.831)
/* UIKit */
UIColor(red: 0.667, green: 0.749, blue: 0.831, alpha: 1)
/* Android XML */
<color name="brand">#AABFD4</color>
/* Android Compose */
Color(0xFFAABFD4)
/* Flutter */
Color(0xFFAABFD4)
/* Python / OpenCV (BGR) */
(212, 191, 170)
/* Python / PIL (RGB) */
(170, 191, 212)
/* Java AWT */
new Color(170, 191, 212)
/* .NET */
Color.FromArgb(255, 170, 191, 212)
/* OpenGL / Unity (0–1) */
(0.6667f, 0.7490f, 0.8314f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{170,191,212}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #aabfd4 85%, white);
border-color: color-mix(in oklab, #aabfd4 40%, transparent);
/* theme-aware in one line */
color: light-dark(#2B4055, #D6E0EA);
/* relative colour syntax */
--hover: hsl(from #aabfd4 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: #F5F7F9;
  --brand-100: #ECF0F4;
  --brand-200: #D4DEE7;
  --brand-300: #aabfd4;
  --brand-400: #8FABC6;
  --brand-500: #6A8FB4;
  --brand-600: #527AA3;
  --brand-700: #456687;
  --brand-800: #37526C;
  --brand-900: #2B3D50;
  --brand-950: #1B2632;
  --brand: #aabfd4;
  --brand-ink: #000000;
  --brand-surface: #F5F7FA;
  --brand-border: #C9D6E4;
  --brand-hover: #92ADC8;
  --brand-pressed: #7B9BBC;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141C24;
    --brand-ink: #D6E0EA;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5F7F9',
        100: '#ECF0F4',
        200: '#D4DEE7',
        300: '#aabfd4',
        400: '#8FABC6',
        500: '#6A8FB4',
        600: '#527AA3',
        700: '#456687',
        800: '#37526C',
        900: '#2B3D50',
        950: '#1B2632',
        DEFAULT: '#aabfd4',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5F7F9,
  '100': #ECF0F4,
  '200': #D4DEE7,
  '300': #aabfd4,
  '400': #8FABC6,
  '500': #6A8FB4,
  '600': #527AA3,
  '700': #456687,
  '800': #37526C,
  '900': #2B3D50,
  '950': #1B2632,
);
$brand-base: #aabfd4;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F5F7F9", "$type": "color" },
      "100": { "$value": "#ECF0F4", "$type": "color" },
      "200": { "$value": "#D4DEE7", "$type": "color" },
      "300": { "$value": "#aabfd4", "$type": "color" },
      "400": { "$value": "#8FABC6", "$type": "color" },
      "500": { "$value": "#6A8FB4", "$type": "color" },
      "600": { "$value": "#527AA3", "$type": "color" },
      "700": { "$value": "#456687", "$type": "color" },
      "800": { "$value": "#37526C", "$type": "color" },
      "900": { "$value": "#2B3D50", "$type": "color" },
      "950": { "$value": "#1B2632", "$type": "color" }
    },
    "brandInk": { "$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 #aabfd4 · 11.11:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.89:1
AA fail · AA large fail · AAA fail
Aa
Black text · 11.11:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #aabfd4 as text scores 1.89:1 on white and 11.11:1 on black.
Best tinted ink on it, if plain black or white feels flat: #2B4055 at 5.65:1.

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
#527AA2 · 4.50:1
AA on white−27% L
#527AA2
The quick fox
#3C5976 · 7.28:1
AAA on white−40% L
#3C5976
The quick fox
#aabfd4 · 11.11:1
AA on blackalready passes
#aabfd4
The quick fox
#aabfd4 · 11.11:1
AAA on blackalready passes
#aabfd4

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #7496B9 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
#aabfd4 on white: 1.89:1
AA ✗ fail · AA-large · AAA
Aa
#aabfd4 on black: 11.11:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #aabfd4 as text on that neutral, and that neutral as text on #aabfd4.

NeutralRatioBoth directions
White1.89:1AaAa
Slate 501.81:1AaAa
Slate 1001.73:1AaAa
Slate 2001.53:1AaAa
Slate 3001.27:1AaAa
Slate 4001.36:1AaAa
Slate 5002.52:1AaAa
Slate 6004.01:1AaAa
Slate 7005.48:1AaAa
Slate 8007.74:1AaAa
Slate 9009.45:1AaAa
Black11.11:1AaAa
Colour vision deficiency
true color
protanopia · #B7BFD5
deuteranopia · #B2BBD4
tritanopia · #9FC4C6

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. #aabfd4 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.

#F5F7F9
#ECF0F4
#D4DEE7
#aabfd4
#8FABC6
#6A8FB4
#527AA3
#456687
#37526C
#2B3D50
#1B2632
Base = 300Lightest = 50 · #F5F7F9Darkest = 950 · #1B2632Text 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 0.009 248.3);
  --brand-100: oklch(0.94 0.015 248.3);
  --brand-200: oklch(0.88 0.023 248.3);
  --brand-300: oklch(0.80 0.029 248.3);
  --brand-400: oklch(0.72 0.035 248.3);
  --brand-500: oklch(0.64 0.038 248.3);
  --brand-600: oklch(0.56 0.038 248.3);
  --brand-700: oklch(0.48 0.035 248.3);
  --brand-800: oklch(0.40 0.032 248.3);
  --brand-900: oklch(0.32 0.026 248.3);
  --brand-950: oklch(0.24 0.021 248.3);
}

Colors that work with #aabfd4

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#C9D6E4
Hairlines and dividers
Muted text#4D7398
Captions on the surface
Accent#8C5340
Second voice, not a rival
Dark variant#2B4055
Hover, pressed, headers
Light variant#EEF2F6
Selected rows, tints
Dark surface#141C24
Dark-mode background
Hover#92ADC8
One step down in lightness
Pressed#7B9BBC
Two steps down
Disabled#F3F5F7
Chroma pulled out
Focus ring#B2C9E0
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 #aabfd4

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 #2B4055
Safe as a 1px border on white
No — use #7496B9

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
  • 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#D4BFAA
Analogous left#AAD4D4
Analogous right#AAAAD4
Split-complement 1#D4AAAA
Split-complement 2#D4D4AA
Triadic 1#D4AABF
Triadic 2#BFD4AA
Tetradic#D4AAD4
On the wheel
Base+30°−30°+120°+240°+180°210°

#aabfd4 sits at 210°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red66.7%
Green74.9%
Blue83.1%
R · 0–255
170
0xaa
G · 0–255
191
0xbf
B · 0–255
212
0xd4

CMYK percentages

Cyan19.8%
Magenta9.9%
Yellow0.0%
Key (black)16.9%

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

Color previews

#aabfd4 text on a black background

contrast 11.11:1

Card sample

#aabfd4 text on a white background

contrast 1.89:1

Card sample

#aabfd4 on grey

1.73:1

#aabfd4 on its own surface

1.76:1

#aabfd4 on its dark surface

9.10:1

CSS3 live lab

Text font color

The quick brown fox

color: #aabfd4;
Background color
Panel with #aabfd4 background
background-color: #aabfd4;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #aabfd4;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(170, 191, 212, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(170, 191, 212, 0.45);
Border & gradient
Gradient panel
border: 3px solid #aabfd4;
background: linear-gradient(135deg, #aabfd4, #B1AAD4);
Gradient text

Gradient headline

background: linear-gradient(90deg, #aabfd4, #BBAAD4);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #aabfd4;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #aabfd4;
caret-color: #aabfd4;
Left rule
Pull quote or callout
border-left: 4px solid #aabfd4;
Ring + tint
Selected chip
background: #EEF2F6;
box-shadow: inset 0 0 0 2px #aabfd4;
Conic badge
68%
background: conic-gradient(#aabfd4 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #aabfd4 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(170, 191, 212, 0.5)
rgb(170 191 212 / 50%)
#aabfd480
hsl(210 33% 75% / 50%)
color-mix(in srgb, #aabfd4 50%, transparent)
Alpha8-digit hexFlat on white
10%#aabfd41a#F7F9FB
20%#aabfd433#EEF2F6
40%#aabfd466#DDE5EE
60%#aabfd499#CCD9E5
80%#aabfd4cc#BBCCDD

Gradients from #aabfd4

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, #D3DEE9, #aabfd4 45%, #2B4055);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #aabfd4, #A396CA);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #aabfd4, #D4BFAA);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #E7EDF3 0%, #aabfd4 45%, #2B4055 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%, #CCE5E3 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #C1BEDE 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #2B4055 0%, transparent 65%), #aabfd4;

Monochromatic scale

Palettes built from #aabfd4

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.

#aabfd4 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 11.11:1.

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.

#aabfd4, answered

What color is #aabfd4?

#aabfd4 is a light soft blue, closest to Light Steel Blue (ΔE2000 2.6). It sits at 210° on the hue wheel with 33% saturation and 75% lightness, which reads as cool.

What is the RGB value of #aabfd4?

rgb(170, 191, 212) — 170 red, 191 green and 212 blue out of 255, or 66.7% / 74.9% / 83.1% by channel.

What is #aabfd4 in HSL and HSV?

hsl(210, 33%, 75%) and hsv(210, 20%, 83%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #aabfd4 a light or a dark color?

It is a light color. Relative luminance is 0.5056 and perceived brightness is 74%, so black text on it reaches 11.11:1.

Should I use black or white text on #aabfd4?

Black. It scores 11.11:1 against #aabfd4, versus 1.89:1 for white — AAA at any size.

Is #aabfd4 accessible on a white background?

#aabfd4 on white scores 1.89:1, which fails WCAG AA at every size. Darken it to #527AA2 to reach 4.5:1, or #3C5976 for 7:1.

What is the complementary color of #aabfd4?

#D4BFAA sits directly opposite on the wheel. Softer options are the split-complements #D4AAAA and #D4D4AA, which give the same contrast with far less vibration.

What colors go well with #aabfd4?

For interface work: #F5F7FA as the surface, #C9D6E4 for borders, #4D7398 for secondary text, #8C5340 as an accent and #2B4055 for hover and pressed states. For a palette, the analogous pair #AAD4D4 and #AAAAD4 stays calm, while #D4BFAA is the loudest partner.

What is #aabfd4 in CMYK for printing?

cmyk(20%, 10%, 0%, 17%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #aabfd4 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 #AAB0D4; nudged cooler, #98B1CD.

Which Tailwind color is closest to #aabfd4?

The sky family — its 500 step is #0ea5e9, ΔE2000 17.1 away. That is a visible difference, so define #aabfd4 as a custom token rather than reaching for the built-in.

How do I use #aabfd4 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#aabfd4] or text-[#aabfd4], 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 #aabfd4 with 50% opacity?

rgba(170, 191, 212, 0.5), or #aabfd480 in eight-digit hex. Over white that composites to #D5DFEA; over black, #55606A.

Is #aabfd4 a web-safe color?

No. The nearest web-safe colour is #99CCCC, ΔE2000 14.1 away. The palette only matters for legacy displays and some email clients now.

What does the color #aabfd4 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 #aabfd4?

The safest is same-hue elevation: linear-gradient(135deg, #D3DEE9, #aabfd4 45%, #2B4055). For more colour, a short hue run to #A396CA keeps it rich without turning muddy.

Work with #aabfd4 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #aabfd4 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.