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blue · cool

#acacfa

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

Token name suggestion: Drift Harbour

RGB
172, 172, 250
HSL
240°, 89%, 83%
CMYK
31, 31, 0, 2
Luminance
0.4518

#acacfa is a light electric blue, 240° on the wheel and 83/100 on the cool side. Put black text on it (10.04:1). As text it scores 2.09:1 on white — use #5F5FF5 instead. Nearest name is Light Steel Blue, nearest Tailwind family is blue.

hsl(240 89% 83%)rgb(172 172 250)Base step 200AAA inkCool

At a glance

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

Hex
#acacfa
Hue
240°
blue
Saturation
89%
electric
Lightness
83%
light
Brightness
98%
HSV value
Perceived
72%
weighted brightness
Luminance
0.4518
WCAG relative
Temperature
Cool
83/100 cool
Color family
Blue
Tone
Electric
Best ink
Black
10.04:1
Closest name
Light Steel Blue
ΔE2000 9.5
Chroma
42.4
LCH, 0–130ish
OKLCH L
0.774
perceptual lightness
Tailwind
blue
500 · ΔE 18.9
Web-safe
#9999FF
nearest of 216
Where it sits
Hue240° of 360°
Saturation89%
Lightness83%
Saturation × lightness field

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

Temperature
Warm ← → Cool83% 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
Red19%
Green65%
Blue15%

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

Every format

HEX#acacfa
HEX (8-digit)#acacfaff
RGBrgb(172, 172, 250)
RGBArgba(172, 172, 250, 1)
HSLhsl(240, 89%, 83%)
HSV / HSBhsv(240, 31%, 98%)
HWBhwb(240 67% 2%)
CMYKcmyk(31%, 31%, 0%, 2%)
LABlab(73.0 17.3 -38.7)
LCHlch(73.0 42.4 294.1)
OKLCHoklch(0.774 0.111 283.5)
XYZ (D65)xyz(49.02, 45.18, 96.56)
Decimal11316474
Display P3color(display-p3 0.675 0.675 0.980)
Web-safe#9999FF

Copy-ready code

every platformclick to select
/* CSS */
color: #acacfa;
background-color: #acacfa;
/* CSS custom property */
--brand: #acacfa;
/* Tailwind (arbitrary) */
class="text-[#acacfa] bg-[#acacfa]"
/* SCSS */
$brand: #acacfa;
/* SwiftUI */
Color(red: 0.675, green: 0.675, blue: 0.980)
/* UIKit */
UIColor(red: 0.675, green: 0.675, blue: 0.980, alpha: 1)
/* Android XML */
<color name="brand">#ACACFA</color>
/* Android Compose */
Color(0xFFACACFA)
/* Flutter */
Color(0xFFACACFA)
/* Python / OpenCV (BGR) */
(250, 172, 172)
/* Python / PIL (RGB) */
(172, 172, 250)
/* Java AWT */
new Color(172, 172, 250)
/* .NET */
Color.FromArgb(255, 172, 172, 250)
/* OpenGL / Unity (0–1) */
(0.6745f, 0.6745f, 0.9804f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{172,172,250}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #acacfa 85%, white);
border-color: color-mix(in oklab, #acacfa 40%, transparent);
/* theme-aware in one line */
color: light-dark(#070778, #D3D3EE);
/* relative colour syntax */
--hover: hsl(from #acacfa 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: #F2F2FD;
  --brand-100: #E5E5FB;
  --brand-200: #acacfa;
  --brand-300: #9595F9;
  --brand-400: #6060F5;
  --brand-500: #2B2BF2;
  --brand-600: #0E0EE7;
  --brand-700: #0C0CC0;
  --brand-800: #09099A;
  --brand-900: #0B0B6F;
  --brand-950: #070745;
  --brand: #acacfa;
  --brand-ink: #000000;
  --brand-surface: #F4F4FA;
  --brand-border: #C0C0ED;
  --brand-hover: #8A8AF8;
  --brand-pressed: #6868F6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141424;
    --brand-ink: #D3D3EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F2F2FD',
        100: '#E5E5FB',
        200: '#acacfa',
        300: '#9595F9',
        400: '#6060F5',
        500: '#2B2BF2',
        600: '#0E0EE7',
        700: '#0C0CC0',
        800: '#09099A',
        900: '#0B0B6F',
        950: '#070745',
        DEFAULT: '#acacfa',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2F2FD,
  '100': #E5E5FB,
  '200': #acacfa,
  '300': #9595F9,
  '400': #6060F5,
  '500': #2B2BF2,
  '600': #0E0EE7,
  '700': #0C0CC0,
  '800': #09099A,
  '900': #0B0B6F,
  '950': #070745,
);
$brand-base: #acacfa;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F2F2FD", "$type": "color" },
      "100": { "$value": "#E5E5FB", "$type": "color" },
      "200": { "$value": "#acacfa", "$type": "color" },
      "300": { "$value": "#9595F9", "$type": "color" },
      "400": { "$value": "#6060F5", "$type": "color" },
      "500": { "$value": "#2B2BF2", "$type": "color" },
      "600": { "$value": "#0E0EE7", "$type": "color" },
      "700": { "$value": "#0C0CC0", "$type": "color" },
      "800": { "$value": "#09099A", "$type": "color" },
      "900": { "$value": "#0B0B6F", "$type": "color" },
      "950": { "$value": "#070745", "$type": "color" }
    },
    "brandInk": { "$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 #acacfa · 10.04:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.09:1
AA fail · AA large fail · AAA fail
Aa
Black text · 10.04:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #acacfa as text scores 2.09:1 on white and 10.04:1 on black.
Best tinted ink on it, if plain black or white feels flat: #070778 at 7.66:1.

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
#5F5FF5 · 4.73:1
AA on white−16% L
#5F5FF5
The quick fox
#3434F3 · 7.16:1
AAA on white−25% L
#3434F3
The quick fox
#acacfa · 10.04:1
AA on blackalready passes
#acacfa
The quick fox
#acacfa · 10.04:1
AAA on blackalready passes
#acacfa

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #8585F8 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
#acacfa on white: 2.09:1
AA ✗ fail · AA-large · AAA
Aa
#acacfa on black: 10.04:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

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

NeutralRatioBoth directions
White2.09:1AaAa
Slate 502.00:1AaAa
Slate 1001.91:1AaAa
Slate 2001.70:1AaAa
Slate 3001.41:1AaAa
Slate 4001.23:1AaAa
Slate 5002.27:1AaAa
Slate 6003.62:1AaAa
Slate 7004.95:1AaAa
Slate 8006.99:1AaAa
Slate 9008.53:1AaAa
Black10.04:1AaAa
Colour vision deficiency
true color
protanopia · #95B6FD
deuteranopia · #92B1F8
tritanopia · #98BAC8

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. #acacfa is pinned to step 200; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F2F2FD
#E5E5FB
#acacfa
#9595F9
#6060F5
#2B2BF2
#0E0EE7
#0C0CC0
#09099A
#0B0B6F
#070745
Base = 200Lightest = 50 · #F2F2FDDarkest = 950 · #070745Text step on white = 400
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 0.028 283.5);
  --brand-100: oklch(0.94 0.044 283.5);
  --brand-200: oklch(0.88 0.066 283.5);
  --brand-300: oklch(0.80 0.086 283.5);
  --brand-400: oklch(0.72 0.102 283.5);
  --brand-500: oklch(0.64 0.111 283.5);
  --brand-600: oklch(0.56 0.111 283.5);
  --brand-700: oklch(0.48 0.104 283.5);
  --brand-800: oklch(0.40 0.093 283.5);
  --brand-900: oklch(0.32 0.077 283.5);
  --brand-950: oklch(0.24 0.061 283.5);
}

Colors that work with #acacfa

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#F4F4FA
Tinted page background
Border#C0C0ED
Hairlines and dividers
Muted text#4B4B9B
Captions on the surface
Accent#C59407
Second voice, not a rival
Dark variant#070778
Hover, pressed, headers
Light variant#E7E7FE
Selected rows, tints
Dark surface#141424
Dark-mode background
Hover#8A8AF8
One step down in lightness
Pressed#6868F6
Two steps down
Disabled#F3F3F7
Chroma pulled out
Focus ring#BCBCFF
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 #acacfa

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 #070778
Safe as a 1px border on white
No — use #8585F8

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
  • Weight17/100
  • 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#FAFAAC
Analogous left#ACD3FA
Analogous right#D3ACFA
Split-complement 1#FAD3AC
Split-complement 2#D3FAAC
Triadic 1#FAACAC
Triadic 2#ACFAAC
Tetradic#FAACD3
On the wheel
Base+30°−30°+120°+240°+180°240°

#acacfa sits at 240°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red67.5%
Green67.5%
Blue98.0%
R · 0–255
172
0xac
G · 0–255
172
0xac
B · 0–255
250
0xfa

CMYK percentages

Cyan31.2%
Magenta31.2%
Yellow0.0%
Key (black)2.0%

Total ink coverage is 64%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#acacfa text on a black background

contrast 10.04:1

Card sample

#acacfa text on a white background

contrast 2.09:1

Card sample

#acacfa on grey

1.91:1

#acacfa on its own surface

1.91:1

#acacfa on its dark surface

8.69:1

CSS3 live lab

Text font color

The quick brown fox

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

Glowing headline

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

Soft neon halo

text-shadow: 0 0 14px rgba(172, 172, 250, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(172, 172, 250, 0.45);
Border & gradient
Gradient panel
border: 3px solid #acacfa;
background: linear-gradient(135deg, #acacfa, #E0ACFA);
Gradient text

Gradient headline

background: linear-gradient(90deg, #acacfa, #F3ACFA);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #acacfa;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #acacfa;
caret-color: #acacfa;
Left rule
Pull quote or callout
border-left: 4px solid #acacfa;
Ring + tint
Selected chip
background: #E7E7FE;
box-shadow: inset 0 0 0 2px #acacfa;
Conic badge
68%
background: conic-gradient(#acacfa 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #acacfa 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, 172, 250, 0.5)
rgb(172 172 250 / 50%)
#acacfa80
hsl(240 89% 83% / 50%)
color-mix(in srgb, #acacfa 50%, transparent)
Alpha8-digit hexFlat on white
10%#acacfa1a#F7F7FF
20%#acacfa33#EEEEFE
40%#acacfa66#DEDEFD
60%#acacfa99#CDCDFC
80%#acacfacc#BDBDFB

Gradients from #acacfa

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, #E6E6FD, #acacfa 45%, #070778);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #acacfa, #DE8FF8);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #acacfa, #FAFAAC);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #F1F1FE 0%, #acacfa 45%, #070778 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F4FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #DCEFFD 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #E6C9FC 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #070778 0%, transparent 65%), #acacfa;

Monochromatic scale

Palettes built from #acacfa

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.

#acacfa 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 10.04:1.

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.

#acacfa, answered

What color is #acacfa?

#acacfa is a light electric blue, closest to Light Steel Blue (ΔE2000 9.5). It sits at 240° on the hue wheel with 89% saturation and 83% lightness, which reads as cool.

What is the RGB value of #acacfa?

rgb(172, 172, 250) — 172 red, 172 green and 250 blue out of 255, or 67.5% / 67.5% / 98% by channel.

What is #acacfa in HSL and HSV?

hsl(240, 89%, 83%) and hsv(240, 31%, 98%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #acacfa a light or a dark color?

It is a mid-tone. Relative luminance is 0.4518 and perceived brightness is 72%, so black text on it reaches 10.04:1.

Should I use black or white text on #acacfa?

Black. It scores 10.04:1 against #acacfa, versus 2.09:1 for white — AAA at any size.

Is #acacfa accessible on a white background?

#acacfa on white scores 2.09:1, which fails WCAG AA at every size. Darken it to #5F5FF5 to reach 4.5:1, or #3434F3 for 7:1.

What is the complementary color of #acacfa?

#FAFAAC sits directly opposite on the wheel. Softer options are the split-complements #FAD3AC and #D3FAAC, which give the same contrast with far less vibration.

What colors go well with #acacfa?

For interface work: #F4F4FA as the surface, #C0C0ED for borders, #4B4B9B for secondary text, #C59407 as an accent and #070778 for hover and pressed states. For a palette, the analogous pair #ACD3FA and #D3ACFA stays calm, while #FAFAAC is the loudest partner.

What is #acacfa in CMYK for printing?

cmyk(31%, 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 #acacfa warm or cool?

Cool — it scores 83 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #C8ACFA; nudged cooler, #ABC6FB.

Which Tailwind color is closest to #acacfa?

The blue family — its 500 step is #3b82f6, ΔE2000 18.9 away. That is a visible difference, so define #acacfa as a custom token rather than reaching for the built-in.

How do I use #acacfa in Tailwind CSS?

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

rgba(172, 172, 250, 0.5), or #acacfa80 in eight-digit hex. Over white that composites to #D6D6FD; over black, #56567D.

Is #acacfa a web-safe color?

No. The nearest web-safe colour is #9999FF, ΔE2000 6 away. The palette only matters for legacy displays and some email clients now.

What does the color #acacfa 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 #acacfa?

The safest is same-hue elevation: linear-gradient(135deg, #E6E6FD, #acacfa 45%, #070778). For more colour, a short hue run to #DE8FF8 keeps it rich without turning muddy.

Work with #acacfa in the Color Lab

Every tool opens with this colour already loaded.

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