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blue · cool

#afbcef

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

Token name suggestion: Meadow Harbour

RGB
175, 188, 239
HSL
228°, 67%, 81%
CMYK
27, 21, 0, 6
Luminance
0.5131

#afbcef is a light vivid blue, 228° on the wheel and 90/100 on the cool side. Put black text on it (11.26:1). As text it scores 1.86:1 on white — use #526EDC instead. Nearest name is Light Steel Blue, nearest Tailwind family is sky.

hsl(228 67% 81%)rgb(175 188 239)Base step 300AAA inkCool

At a glance

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

Hex
#afbcef
Hue
228°
blue
Saturation
67%
vivid
Lightness
81%
light
Brightness
94%
HSV value
Perceived
75%
weighted brightness
Luminance
0.5131
WCAG relative
Temperature
Cool
90/100 cool
Color family
Blue
Tone
Vivid
Best ink
Black
11.26:1
Closest name
Light Steel Blue
ΔE2000 7.2
Chroma
27.6
LCH, 0–130ish
OKLCH L
0.803
perceptual lightness
Tailwind
sky
500 · ΔE 20.8
Web-safe
#99CCFF
nearest of 216
Where it sits
Hue228° of 360°
Saturation67%
Lightness81%
Saturation × lightness field

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

Temperature
Warm ← → Cool90% 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%
Green70%
Blue12%

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

Every format

HEX#afbcef
HEX (8-digit)#afbcefff
RGBrgb(175, 188, 239)
RGBArgba(175, 188, 239, 1)
HSLhsl(228, 67%, 81%)
HSV / HSBhsv(228, 27%, 94%)
HWBhwb(228 69% 6%)
CMYKcmyk(27%, 21%, 0%, 6%)
LABlab(76.9 6.6 -26.8)
LCHlch(76.9 27.6 283.9)
OKLCHoklch(0.803 0.074 273.5)
XYZ (D65)xyz(51.24, 51.31, 88.85)
Decimal11517167
Display P3color(display-p3 0.686 0.737 0.937)
Web-safe#99CCFF

Copy-ready code

every platformclick to select
/* CSS */
color: #afbcef;
background-color: #afbcef;
/* CSS custom property */
--brand: #afbcef;
/* Tailwind (arbitrary) */
class="text-[#afbcef] bg-[#afbcef]"
/* SCSS */
$brand: #afbcef;
/* SwiftUI */
Color(red: 0.686, green: 0.737, blue: 0.937)
/* UIKit */
UIColor(red: 0.686, green: 0.737, blue: 0.937, alpha: 1)
/* Android XML */
<color name="brand">#AFBCEF</color>
/* Android Compose */
Color(0xFFAFBCEF)
/* Flutter */
Color(0xFFAFBCEF)
/* Python / OpenCV (BGR) */
(239, 188, 175)
/* Python / PIL (RGB) */
(175, 188, 239)
/* Java AWT */
new Color(175, 188, 239)
/* .NET */
Color.FromArgb(255, 175, 188, 239)
/* OpenGL / Unity (0–1) */
(0.6863f, 0.7373f, 0.9373f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{175,188,239}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #afbcef 85%, white);
border-color: color-mix(in oklab, #afbcef 40%, transparent);
/* theme-aware in one line */
color: light-dark(#15276A, #D3D8EE);
/* relative colour syntax */
--hover: hsl(from #afbcef 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: #F3F5FB;
  --brand-100: #E8EBF8;
  --brand-200: #CAD2F1;
  --brand-300: #afbcef;
  --brand-400: #738AE3;
  --brand-500: #4462DA;
  --brand-600: #294ACC;
  --brand-700: #223EAA;
  --brand-800: #1B3188;
  --brand-900: #182763;
  --brand-950: #0F183E;
  --brand: #afbcef;
  --brand-ink: #000000;
  --brand-surface: #F4F6FA;
  --brand-border: #C0C9ED;
  --brand-hover: #91A3E9;
  --brand-pressed: #748AE3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141724;
    --brand-ink: #D3D8EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F3F5FB',
        100: '#E8EBF8',
        200: '#CAD2F1',
        300: '#afbcef',
        400: '#738AE3',
        500: '#4462DA',
        600: '#294ACC',
        700: '#223EAA',
        800: '#1B3188',
        900: '#182763',
        950: '#0F183E',
        DEFAULT: '#afbcef',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F3F5FB,
  '100': #E8EBF8,
  '200': #CAD2F1,
  '300': #afbcef,
  '400': #738AE3,
  '500': #4462DA,
  '600': #294ACC,
  '700': #223EAA,
  '800': #1B3188,
  '900': #182763,
  '950': #0F183E,
);
$brand-base: #afbcef;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F3F5FB", "$type": "color" },
      "100": { "$value": "#E8EBF8", "$type": "color" },
      "200": { "$value": "#CAD2F1", "$type": "color" },
      "300": { "$value": "#afbcef", "$type": "color" },
      "400": { "$value": "#738AE3", "$type": "color" },
      "500": { "$value": "#4462DA", "$type": "color" },
      "600": { "$value": "#294ACC", "$type": "color" },
      "700": { "$value": "#223EAA", "$type": "color" },
      "800": { "$value": "#1B3188", "$type": "color" },
      "900": { "$value": "#182763", "$type": "color" },
      "950": { "$value": "#0F183E", "$type": "color" }
    },
    "brandInk": { "$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 #afbcef · 11.26:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.86:1
AA fail · AA large fail · AAA fail
Aa
Black text · 11.26:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #afbcef as text scores 1.86:1 on white and 11.26:1 on black.
Best tinted ink on it, if plain black or white feels flat: #15276A at 7.36:1.

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
#526EDC · 4.54:1
AA on white−22% L
#526EDC
The quick fox
#294ACD · 7.11:1
AAA on white−33% L
#294ACD
The quick fox
#afbcef · 11.26:1
AA on blackalready passes
#afbcef
The quick fox
#afbcef · 11.26:1
AAA on blackalready passes
#afbcef

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #788EE4 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
#afbcef on white: 1.86:1
AA ✗ fail · AA-large · AAA
Aa
#afbcef on black: 11.26:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

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

NeutralRatioBoth directions
White1.86:1AaAa
Slate 501.78:1AaAa
Slate 1001.70:1AaAa
Slate 2001.51:1AaAa
Slate 3001.26:1AaAa
Slate 4001.38:1AaAa
Slate 5002.55:1AaAa
Slate 6004.06:1AaAa
Slate 7005.55:1AaAa
Slate 8007.85:1AaAa
Slate 9009.57:1AaAa
Black11.26:1AaAa
Colour vision deficiency
true color
protanopia · #ADC0F1
deuteranopia · #A8BBEE
tritanopia · #9FC6CD

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. #afbcef 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.

#F3F5FB
#E8EBF8
#CAD2F1
#afbcef
#738AE3
#4462DA
#294ACC
#223EAA
#1B3188
#182763
#0F183E
Base = 300Lightest = 50 · #F3F5FBDarkest = 950 · #0F183EText 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 0.018 273.5);
  --brand-100: oklch(0.94 0.030 273.5);
  --brand-200: oklch(0.88 0.044 273.5);
  --brand-300: oklch(0.80 0.058 273.5);
  --brand-400: oklch(0.72 0.068 273.5);
  --brand-500: oklch(0.64 0.074 273.5);
  --brand-600: oklch(0.56 0.074 273.5);
  --brand-700: oklch(0.48 0.069 273.5);
  --brand-800: oklch(0.40 0.062 273.5);
  --brand-900: oklch(0.32 0.052 273.5);
  --brand-950: oklch(0.24 0.041 273.5);
}

Colors that work with #afbcef

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#F4F6FA
Tinted page background
Border#C0C9ED
Hairlines and dividers
Muted text#4B5B9B
Captions on the surface
Accent#AE6C1E
Second voice, not a rival
Dark variant#15276A
Hover, pressed, headers
Light variant#EAEDFB
Selected rows, tints
Dark surface#141724
Dark-mode background
Hover#91A3E9
One step down in lightness
Pressed#748AE3
Two steps down
Disabled#F3F3F7
Chroma pulled out
Focus ring#BCC8F6
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 #afbcef

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

Works well for
  • Text and icons on dark surfaces
  • Primary buttons and calls to action
  • Focus rings, active and selected states
  • Card and section backgrounds
  • Brand accents, badges and data highlights
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • 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 #15276A
Safe as a 1px border on white
No — use #788EE4

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.

This is a confident chroma: strong enough to lead a brand, restrained enough to live in an interface all day. 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-high
  • Weight19/100
  • 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#EFE2AF
Analogous left#AFDCEF
Analogous right#C2AFEF
Split-complement 1#EFC2AF
Split-complement 2#DCEFAF
Triadic 1#EFAFBC
Triadic 2#BCEFAF
Tetradic#EFAFDC
On the wheel
Base+30°−30°+120°+240°+180°228°

#afbcef sits at 228°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red68.6%
Green73.7%
Blue93.7%
R · 0–255
175
0xaf
G · 0–255
188
0xbc
B · 0–255
239
0xef

CMYK percentages

Cyan26.8%
Magenta21.3%
Yellow0.0%
Key (black)6.3%

Total ink coverage is 54%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#afbcef text on a black background

contrast 11.26:1

Card sample

#afbcef text on a white background

contrast 1.86:1

Card sample

#afbcef on grey

1.70:1

#afbcef on its own surface

1.72:1

#afbcef on its dark surface

9.56:1

CSS3 live lab

Text font color

The quick brown fox

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

Glowing headline

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

Soft neon halo

text-shadow: 0 0 14px rgba(175, 188, 239, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(175, 188, 239, 0.45);
Border & gradient
Gradient panel
border: 3px solid #afbcef;
background: linear-gradient(135deg, #afbcef, #CDAFEF);
Gradient text

Gradient headline

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

Marked up text

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

Transparency

What each alpha value actually composites to. The top row is #afbcef 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(175, 188, 239, 0.5)
rgb(175 188 239 / 50%)
#afbcef80
hsl(228 67% 81% / 50%)
color-mix(in srgb, #afbcef 50%, transparent)
Alpha8-digit hexFlat on white
10%#afbcef1a#F7F8FD
20%#afbcef33#EFF2FC
40%#afbcef66#DFE4F9
60%#afbcef99#CFD7F5
80%#afbcefcc#BFC9F2

Gradients from #afbcef

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, #E2E7F9, #afbcef 45%, #15276A);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #afbcef, #C496EA);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #afbcef, #EFE2AF);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #F2F4FC 0%, #afbcef 45%, #15276A 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F6FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #DAF1F8 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #D9C9F4 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #15276A 0%, transparent 65%), #afbcef;

Monochromatic scale

Palettes built from #afbcef

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.

#afbcef 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 11.26:1.

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.

#afbcef, answered

What color is #afbcef?

#afbcef is a light vivid blue, closest to Light Steel Blue (ΔE2000 7.2). It sits at 228° on the hue wheel with 67% saturation and 81% lightness, which reads as cool.

What is the RGB value of #afbcef?

rgb(175, 188, 239) — 175 red, 188 green and 239 blue out of 255, or 68.6% / 73.7% / 93.7% by channel.

What is #afbcef in HSL and HSV?

hsl(228, 67%, 81%) and hsv(228, 27%, 94%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #afbcef a light or a dark color?

It is a light color. Relative luminance is 0.5131 and perceived brightness is 75%, so black text on it reaches 11.26:1.

Should I use black or white text on #afbcef?

Black. It scores 11.26:1 against #afbcef, versus 1.86:1 for white — AAA at any size.

Is #afbcef accessible on a white background?

#afbcef on white scores 1.86:1, which fails WCAG AA at every size. Darken it to #526EDC to reach 4.5:1, or #294ACD for 7:1.

What is the complementary color of #afbcef?

#EFE2AF sits directly opposite on the wheel. Softer options are the split-complements #EFC2AF and #DCEFAF, which give the same contrast with far less vibration.

What colors go well with #afbcef?

For interface work: #F4F6FA as the surface, #C0C9ED for borders, #4B5B9B for secondary text, #AE6C1E as an accent and #15276A for hover and pressed states. For a palette, the analogous pair #AFDCEF and #C2AFEF stays calm, while #EFE2AF is the loudest partner.

What is #afbcef in CMYK for printing?

cmyk(27%, 21%, 0%, 6%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #afbcef warm or cool?

Cool — it scores 90 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #BAAFEF; nudged cooler, #AEC9F0.

Which Tailwind color is closest to #afbcef?

The sky family — its 500 step is #0ea5e9, ΔE2000 20.8 away. That is a visible difference, so define #afbcef as a custom token rather than reaching for the built-in.

How do I use #afbcef in Tailwind CSS?

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

rgba(175, 188, 239, 0.5), or #afbcef80 in eight-digit hex. Over white that composites to #D7DEF7; over black, #585E78.

Is #afbcef a web-safe color?

No. The nearest web-safe colour is #99CCFF, ΔE2000 10.3 away. The palette only matters for legacy displays and some email clients now.

What does the color #afbcef 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 chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #afbcef?

The safest is same-hue elevation: linear-gradient(135deg, #E2E7F9, #afbcef 45%, #15276A). For more colour, a short hue run to #C496EA keeps it rich without turning muddy.

Work with #afbcef in the Color Lab

Every tool opens with this colour already loaded.

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