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blue · cool

#8cacf9

a light, electric blue · cool · closest name: Cornflower Blue

Token name suggestion: Linen Harbour

RGB
140, 172, 249
HSL
222°, 90%, 76%
CMYK
44, 31, 0, 2
Luminance
0.4192

#8cacf9 is a light electric blue, 222° on the wheel and 93/100 on the cool side. Put black text on it (9.38:1). As text it scores 2.24:1 on white — use #356DF4 instead. Nearest name is Cornflower Blue, nearest Tailwind family is blue.

hsl(222 90% 76%)rgb(140 172 249)Base step 300AAA inkCool

At a glance

Every number on this page in one read: what #8cacf9 is made of, how bright it looks, and which way it leans.

Hex
#8cacf9
Hue
222°
blue
Saturation
90%
electric
Lightness
76%
light
Brightness
98%
HSV value
Perceived
68%
weighted brightness
Luminance
0.4192
WCAG relative
Temperature
Cool
93/100 cool
Color family
Blue
Tone
Electric
Best ink
Black
9.38:1
Closest name
Cornflower Blue
ΔE2000 7.8
Chroma
42.6
LCH, 0–130ish
OKLCH L
0.751
perceptual lightness
Tailwind
blue
500 · ΔE 13.8
Web-safe
#9999FF
nearest of 216
Where it sits
Hue222° of 360°
Saturation90%
Lightness76%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #8cacf9.

Temperature
Warm ← → Cool93% 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
Red13%
Green70%
Blue16%

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

Every format

HEX#8cacf9
HEX (8-digit)#8cacf9ff
RGBrgb(140, 172, 249)
RGBArgba(140, 172, 249, 1)
HSLhsl(222, 90%, 76%)
HSV / HSBhsv(222, 44%, 98%)
HWBhwb(222 55% 2%)
CMYKcmyk(44%, 31%, 0%, 2%)
LABlab(70.8 8.6 -41.7)
LCHlch(70.8 42.6 281.7)
OKLCHoklch(0.751 0.117 266.4)
XYZ (D65)xyz(42.66, 41.92, 95.45)
Decimal9219321
Display P3color(display-p3 0.549 0.675 0.976)
Web-safe#9999FF

Copy-ready code

every platformclick to select
/* CSS */
color: #8cacf9;
background-color: #8cacf9;
/* CSS custom property */
--brand: #8cacf9;
/* Tailwind (arbitrary) */
class="text-[#8cacf9] bg-[#8cacf9]"
/* SCSS */
$brand: #8cacf9;
/* SwiftUI */
Color(red: 0.549, green: 0.675, blue: 0.976)
/* UIKit */
UIColor(red: 0.549, green: 0.675, blue: 0.976, alpha: 1)
/* Android XML */
<color name="brand">#8CACF9</color>
/* Android Compose */
Color(0xFF8CACF9)
/* Flutter */
Color(0xFF8CACF9)
/* Python / OpenCV (BGR) */
(249, 172, 140)
/* Python / PIL (RGB) */
(140, 172, 249)
/* Java AWT */
new Color(140, 172, 249)
/* .NET */
Color.FromArgb(255, 140, 172, 249)
/* OpenGL / Unity (0–1) */
(0.5490f, 0.6745f, 0.9765f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{140,172,249}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #8cacf9 85%, white);
border-color: color-mix(in oklab, #8cacf9 40%, transparent);
/* theme-aware in one line */
color: light-dark(#062879, #D3DBEE);
/* relative colour syntax */
--hover: hsl(from #8cacf9 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: #F2F5FD;
  --brand-100: #E5EBFB;
  --brand-200: #C3D3F8;
  --brand-300: #8cacf9;
  --brand-400: #5F8CF7;
  --brand-500: #2A65F4;
  --brand-600: #0C4DE9;
  --brand-700: #0A40C2;
  --brand-800: #08339B;
  --brand-900: #0A2870;
  --brand-950: #071946;
  --brand: #8cacf9;
  --brand-ink: #000000;
  --brand-surface: #F4F6FA;
  --brand-border: #C0CDED;
  --brand-hover: #6A94F7;
  --brand-pressed: #487BF5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141924;
    --brand-ink: #D3DBEE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F2F5FD',
        100: '#E5EBFB',
        200: '#C3D3F8',
        300: '#8cacf9',
        400: '#5F8CF7',
        500: '#2A65F4',
        600: '#0C4DE9',
        700: '#0A40C2',
        800: '#08339B',
        900: '#0A2870',
        950: '#071946',
        DEFAULT: '#8cacf9',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2F5FD,
  '100': #E5EBFB,
  '200': #C3D3F8,
  '300': #8cacf9,
  '400': #5F8CF7,
  '500': #2A65F4,
  '600': #0C4DE9,
  '700': #0A40C2,
  '800': #08339B,
  '900': #0A2870,
  '950': #071946,
);
$brand-base: #8cacf9;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F2F5FD", "$type": "color" },
      "100": { "$value": "#E5EBFB", "$type": "color" },
      "200": { "$value": "#C3D3F8", "$type": "color" },
      "300": { "$value": "#8cacf9", "$type": "color" },
      "400": { "$value": "#5F8CF7", "$type": "color" },
      "500": { "$value": "#2A65F4", "$type": "color" },
      "600": { "$value": "#0C4DE9", "$type": "color" },
      "700": { "$value": "#0A40C2", "$type": "color" },
      "800": { "$value": "#08339B", "$type": "color" },
      "900": { "$value": "#0A2870", "$type": "color" },
      "950": { "$value": "#071946", "$type": "color" }
    },
    "brandInk": { "$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 #8cacf9 · 9.38:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.24:1
AA fail · AA large fail · AAA fail
Aa
Black text · 9.38:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #8cacf9 as text scores 2.24:1 on white and 9.38:1 on black.
Best tinted ink on it, if plain black or white feels flat: #062879 at 5.91:1.

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
#356DF4 · 4.52:1
AA on white−18% L
#356DF4
The quick fox
#0B48DC · 7.06:1
AAA on white−31% L
#0B48DC
The quick fox
#8cacf9 · 9.38:1
AA on blackalready passes
#8cacf9
The quick fox
#8cacf9 · 9.38:1
AAA on blackalready passes
#8cacf9

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #6590F7 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
#8cacf9 on white: 2.24:1
AA ✗ fail · AA-large · AAA
Aa
#8cacf9 on black: 9.38:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #8cacf9 as text on that neutral, and that neutral as text on #8cacf9.

NeutralRatioBoth directions
White2.24:1AaAa
Slate 502.14:1AaAa
Slate 1002.04:1AaAa
Slate 2001.82:1AaAa
Slate 3001.51:1AaAa
Slate 4001.15:1AaAa
Slate 5002.13:1AaAa
Slate 6003.39:1AaAa
Slate 7004.63:1AaAa
Slate 8006.54:1AaAa
Slate 9007.98:1AaAa
Black9.38:1AaAa
Colour vision deficiency
true color
protanopia · #90B3FC
deuteranopia · #85A9F7
tritanopia · #64BCC7

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. #8cacf9 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.

#F2F5FD
#E5EBFB
#C3D3F8
#8cacf9
#5F8CF7
#2A65F4
#0C4DE9
#0A40C2
#08339B
#0A2870
#071946
Base = 300Lightest = 50 · #F2F5FDDarkest = 950 · #071946Text 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 0.029 266.4);
  --brand-100: oklch(0.94 0.047 266.4);
  --brand-200: oklch(0.88 0.070 266.4);
  --brand-300: oklch(0.80 0.091 266.4);
  --brand-400: oklch(0.72 0.108 266.4);
  --brand-500: oklch(0.64 0.117 266.4);
  --brand-600: oklch(0.56 0.117 266.4);
  --brand-700: oklch(0.48 0.110 266.4);
  --brand-800: oklch(0.40 0.098 266.4);
  --brand-900: oklch(0.32 0.082 266.4);
  --brand-950: oklch(0.24 0.064 266.4);
}

Colors that work with #8cacf9

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#C0CDED
Hairlines and dividers
Muted text#4B629B
Captions on the surface
Accent#C55E07
Second voice, not a rival
Dark variant#062879
Hover, pressed, headers
Light variant#E7EEFE
Selected rows, tints
Dark surface#141924
Dark-mode background
Hover#6A94F7
One step down in lightness
Pressed#487BF5
Two steps down
Disabled#F3F4F7
Chroma pulled out
Focus ring#9BB8FF
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 #8cacf9

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 #062879
Safe as a 1px border on white
No — use #6590F7

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.

At this chroma the association is amplified — it will dominate anything placed beside it, so give it space and use it sparingly. 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
  • FormalityLow
  • EnergyHigh
  • 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#F9D98C
Analogous left#8CE3F9
Analogous right#A38CF9
Split-complement 1#F9A38C
Split-complement 2#E3F98C
Triadic 1#F98CAC
Triadic 2#ACF98C
Tetradic#F98CE3
On the wheel
Base+30°−30°+120°+240°+180°222°

#8cacf9 sits at 222°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red54.9%
Green67.5%
Blue97.6%
R · 0–255
140
0x8c
G · 0–255
172
0xac
B · 0–255
249
0xf9

CMYK percentages

Cyan43.8%
Magenta30.9%
Yellow0.0%
Key (black)2.4%

Total ink coverage is 77%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#8cacf9 text on a black background

contrast 9.38:1

Card sample

#8cacf9 text on a white background

contrast 2.24:1

Card sample

#8cacf9 on grey

2.04:1

#8cacf9 on its own surface

2.07:1

#8cacf9 on its dark surface

7.86:1

CSS3 live lab

Text font color

The quick brown fox

color: #8cacf9;
Background color
Panel with #8cacf9 background
background-color: #8cacf9;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #8cacf9;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(140, 172, 249, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(140, 172, 249, 0.45);
Border & gradient
Gradient panel
border: 3px solid #8cacf9;
background: linear-gradient(135deg, #8cacf9, #B58CF9);
Gradient text

Gradient headline

background: linear-gradient(90deg, #8cacf9, #D08CF9);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #8cacf9;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #8cacf9;
caret-color: #8cacf9;
Left rule
Pull quote or callout
border-left: 4px solid #8cacf9;
Ring + tint
Selected chip
background: #E7EEFE;
box-shadow: inset 0 0 0 2px #8cacf9;
Conic badge
68%
background: conic-gradient(#8cacf9 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #8cacf9 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(140, 172, 249, 0.5)
rgb(140 172 249 / 50%)
#8cacf980
hsl(222 90% 76% / 50%)
color-mix(in srgb, #8cacf9 50%, transparent)
Alpha8-digit hexFlat on white
10%#8cacf91a#F4F7FE
20%#8cacf933#E8EEFE
40%#8cacf966#D1DEFD
60%#8cacf999#BACDFB
80%#8cacf9cc#A3BDFA

Gradients from #8cacf9

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, #C6D6FC, #8cacf9 45%, #062879);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #8cacf9, #AD6FF8);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #8cacf9, #F9D98C);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #E3EBFE 0%, #8cacf9 45%, #062879 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%, #BDF4FC 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #C1A9FB 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #062879 0%, transparent 65%), #8cacf9;

Monochromatic scale

Palettes built from #8cacf9

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.

#8cacf9 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

Sits outside most CMYK gamuts — expect a duller press result, or specify a spot ink.

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 9.38:1.

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.

#8cacf9, answered

What color is #8cacf9?

#8cacf9 is a light electric blue, closest to Cornflower Blue (ΔE2000 7.8). It sits at 222° on the hue wheel with 90% saturation and 76% lightness, which reads as cool.

What is the RGB value of #8cacf9?

rgb(140, 172, 249) — 140 red, 172 green and 249 blue out of 255, or 54.9% / 67.5% / 97.6% by channel.

What is #8cacf9 in HSL and HSV?

hsl(222, 90%, 76%) and hsv(222, 44%, 98%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #8cacf9 a light or a dark color?

It is a mid-tone. Relative luminance is 0.4192 and perceived brightness is 68%, so black text on it reaches 9.38:1.

Should I use black or white text on #8cacf9?

Black. It scores 9.38:1 against #8cacf9, versus 2.24:1 for white — AAA at any size.

Is #8cacf9 accessible on a white background?

#8cacf9 on white scores 2.24:1, which fails WCAG AA at every size. Darken it to #356DF4 to reach 4.5:1, or #0B48DC for 7:1.

What is the complementary color of #8cacf9?

#F9D98C sits directly opposite on the wheel. Softer options are the split-complements #F9A38C and #E3F98C, which give the same contrast with far less vibration.

What colors go well with #8cacf9?

For interface work: #F4F6FA as the surface, #C0CDED for borders, #4B629B for secondary text, #C55E07 as an accent and #062879 for hover and pressed states. For a palette, the analogous pair #8CE3F9 and #A38CF9 stays calm, while #F9D98C is the loudest partner.

What is #8cacf9 in CMYK for printing?

cmyk(44%, 31%, 0%, 2%). This is a screen-to-ink approximation — a color this saturated sits outside most CMYK gamuts and will print duller than it looks here.

Is #8cacf9 warm or cool?

Cool — it scores 93 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #948CF9; nudged cooler, #8BB8FA.

Which Tailwind color is closest to #8cacf9?

The blue family — its 500 step is #3b82f6, ΔE2000 13.8 away. That is a visible difference, so define #8cacf9 as a custom token rather than reaching for the built-in.

How do I use #8cacf9 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#8cacf9] or text-[#8cacf9], 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 #8cacf9 with 50% opacity?

rgba(140, 172, 249, 0.5), or #8cacf980 in eight-digit hex. Over white that composites to #C6D6FC; over black, #46567D.

Is #8cacf9 a web-safe color?

No. The nearest web-safe colour is #9999FF, ΔE2000 7.7 away. The palette only matters for legacy displays and some email clients now.

What does the color #8cacf9 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 #8cacf9?

The safest is same-hue elevation: linear-gradient(135deg, #C6D6FC, #8cacf9 45%, #062879). For more colour, a short hue run to #AD6FF8 keeps it rich without turning muddy.

Work with #8cacf9 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #8cacf9 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.