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blue · cool

#595af5

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

Token name suggestion: Linen Denim

RGB
89, 90, 245
HSL
240°, 89%, 66%
CMYK
64, 63, 0, 4
Luminance
0.1603

#595af5 is a light electric blue, 240° on the wheel and 84/100 on the cool side. Put white text on it (4.99:1). As text it scores 4.99:1 on white — safe at any size. Nearest name is Slate Blue, nearest Tailwind family is indigo.

hsl(240 89% 66%)rgb(89 90 245)Base step 400AA inkCool

At a glance

Every number on this page in one read: what #595af5 is made of, how bright it looks, and which way it leans.

Hex
#595af5
Hue
240°
blue
Saturation
89%
electric
Lightness
66%
light
Brightness
96%
HSV value
Perceived
46%
weighted brightness
Luminance
0.1603
WCAG relative
Temperature
Cool
84/100 cool
Color family
Blue
Tone
Electric
Best ink
White
4.99:1
Closest name
Slate Blue
ΔE2000 5.7
Chroma
90.1
LCH, 0–130ish
OKLCH L
0.562
perceptual lightness
Tailwind
indigo
500 · ΔE 3.7
Web-safe
#6666FF
nearest of 216
Where it sits
Hue240° of 360°
Saturation89%
Lightness66%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #595af5.

Temperature
Warm ← → Cool84% 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%
Green46%
Blue41%

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

Every format

HEX#595af5
HEX (8-digit)#595af5ff
RGBrgb(89, 90, 245)
RGBArgba(89, 90, 245, 1)
HSLhsl(240, 89%, 66%)
HSV / HSBhsv(240, 64%, 96%)
HWBhwb(240 35% 4%)
CMYKcmyk(64%, 63%, 0%, 4%)
LABlab(47.0 45.5 -77.8)
LCHlch(47.0 90.1 300.3)
OKLCHoklch(0.562 0.226 276.1)
XYZ (D65)xyz(24.25, 16.03, 88.18)
Decimal5855989
Display P3color(display-p3 0.349 0.353 0.961)
Web-safe#6666FF

Copy-ready code

every platformclick to select
/* CSS */
color: #595af5;
background-color: #595af5;
/* CSS custom property */
--brand: #595af5;
/* Tailwind (arbitrary) */
class="text-[#595af5] bg-[#595af5]"
/* SCSS */
$brand: #595af5;
/* SwiftUI */
Color(red: 0.349, green: 0.353, blue: 0.961)
/* UIKit */
UIColor(red: 0.349, green: 0.353, blue: 0.961, alpha: 1)
/* Android XML */
<color name="brand">#595AF5</color>
/* Android Compose */
Color(0xFF595AF5)
/* Flutter */
Color(0xFF595AF5)
/* Python / OpenCV (BGR) */
(245, 90, 89)
/* Python / PIL (RGB) */
(89, 90, 245)
/* Java AWT */
new Color(89, 90, 245)
/* .NET */
Color.FromArgb(255, 89, 90, 245)
/* OpenGL / Unity (0–1) */
(0.3490f, 0.3529f, 0.9608f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{89,90,245}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #595af5 85%, white);
border-color: color-mix(in oklab, #595af5 40%, transparent);
/* theme-aware in one line */
color: light-dark(#070878, #D3D3EE);
/* relative colour syntax */
--hover: hsl(from #595af5 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: #C4C4F8;
  --brand-300: #9596F9;
  --brand-400: #595af5;
  --brand-500: #2B2DF2;
  --brand-600: #0E0FE7;
  --brand-700: #0C0DC0;
  --brand-800: #090A9A;
  --brand-900: #0B0C6F;
  --brand-950: #070745;
  --brand: #595af5;
  --brand-ink: #ffffff;
  --brand-surface: #F4F4FA;
  --brand-border: #C0C0ED;
  --brand-hover: #3739F3;
  --brand-pressed: #1617F1;
}
@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: '#C4C4F8',
        300: '#9596F9',
        400: '#595af5',
        500: '#2B2DF2',
        600: '#0E0FE7',
        700: '#0C0DC0',
        800: '#090A9A',
        900: '#0B0C6F',
        950: '#070745',
        DEFAULT: '#595af5',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F2F2FD,
  '100': #E5E5FB,
  '200': #C4C4F8,
  '300': #9596F9,
  '400': #595af5,
  '500': #2B2DF2,
  '600': #0E0FE7,
  '700': #0C0DC0,
  '800': #090A9A,
  '900': #0B0C6F,
  '950': #070745,
);
$brand-base: #595af5;
$brand-ink: #ffffff;

@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": "#C4C4F8", "$type": "color" },
      "300": { "$value": "#9596F9", "$type": "color" },
      "400": { "$value": "#595af5", "$type": "color" },
      "500": { "$value": "#2B2DF2", "$type": "color" },
      "600": { "$value": "#0E0FE7", "$type": "color" },
      "700": { "$value": "#0C0DC0", "$type": "color" },
      "800": { "$value": "#090A9A", "$type": "color" },
      "900": { "$value": "#0B0C6F", "$type": "color" },
      "950": { "$value": "#070745", "$type": "color" }
    },
    "brandInk": { "$value": "#ffffff", "$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#ffffff on #595af5 · 4.99:1
Use #ffffffAA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 4.99:1 · recommended
AA pass · AA large pass · AAA fail
Aa
Black text · 4.21:1
AA fail · AA large pass · AAA fail
Reading the other direction: #595af5 as text scores 4.99:1 on white and 4.21:1 on black.
Best tinted ink on it, if plain black or white feels flat: #E7E7FE at 4.10:1.

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
#595af5 · 4.99:1
AA on whitealready passes
#595af5
The quick fox
#3334F3 · 7.18:1
AAA on white−8% L
#3334F3
The quick fox
#6364F6 · 4.68:1
AA on black+2% L
#6364F6
The quick fox
#898AF8 · 7.05:1
AAA on black+10% L
#898AF8

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #595AF5 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
#595af5 on white: 4.99:1
AA ✓ pass · AA-large · AAA
Aa
#595af5 on black: 4.21:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #595af5 as text on that neutral, and that neutral as text on #595af5.

NeutralRatioBoth directions
White4.99:1AaAa
Slate 504.77:1AaAa
Slate 1004.56:1AaAa
Slate 2004.05:1AaAa
Slate 3003.36:1AaAa
Slate 4001.95:1AaAa
Slate 5001.05:1AaAa
Slate 6001.52:1AaAa
Slate 7002.07:1AaAa
Slate 8002.93:1AaAa
Slate 9003.58:1AaAa
Black4.21:1AaAa
Colour vision deficiency
true color
protanopia · #0076FA
deuteranopia · #0069F2
tritanopia · #00829F

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. #595af5 is pinned to step 400; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F2F2FD
#E5E5FB
#C4C4F8
#9596F9
#595af5
#2B2DF2
#0E0FE7
#0C0DC0
#090A9A
#0B0C6F
#070745
Base = 400Lightest = 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 0.056 276.1);
  --brand-100: oklch(0.94 0.090 276.1);
  --brand-200: oklch(0.88 0.135 276.1);
  --brand-300: oklch(0.80 0.176 276.1);
  --brand-400: oklch(0.72 0.207 276.1);
  --brand-500: oklch(0.64 0.226 276.1);
  --brand-600: oklch(0.56 0.226 276.1);
  --brand-700: oklch(0.48 0.212 276.1);
  --brand-800: oklch(0.40 0.189 276.1);
  --brand-900: oklch(0.32 0.158 276.1);
  --brand-950: oklch(0.24 0.124 276.1);
}

Colors that work with #595af5

Not a palette — a role sheet. Each swatch answers one question you will hit while building the component.

Text on it#ffffff
White wins here
Surface#F4F4FA
Tinted page background
Border#C0C0ED
Hairlines and dividers
Muted text#4B4B9B
Captions on the surface
Accent#C49408
Second voice, not a rival
Dark variant#070878
Hover, pressed, headers
Light variant#E7E7FE
Selected rows, tints
Dark surface#141424
Dark-mode background
Hover#3739F3
One step down in lightness
Pressed#1617F1
Two steps down
Disabled#D8D8E6
Chroma pulled out
Focus ring#6566FE
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 #595af5

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

Works well for
  • Body text and links on white
  • 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
  • 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
Any size
Safe as a fill behind white type
Yes
Safe as a 1px border on white
Yes

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
  • Weight35/100
  • 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#F5F459
Analogous left#59A8F5
Analogous right#A659F5
Split-complement 1#F5A659
Split-complement 2#A8F559
Triadic 1#F5595A
Triadic 2#5AF559
Tetradic#F559A8
On the wheel
Base+30°−30°+120°+240°+180°240°

#595af5 sits at 240°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red34.9%
Green35.3%
Blue96.1%
R · 0–255
89
0x59
G · 0–255
90
0x5a
B · 0–255
245
0xf5

CMYK percentages

Cyan63.7%
Magenta63.3%
Yellow0.0%
Key (black)3.9%

Total ink coverage is 131%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#595af5 text on a black background

contrast 4.21:1

Card sample

#595af5 text on a white background

contrast 4.99:1

Card sample

#595af5 on grey

4.56:1

#595af5 on its own surface

4.56:1

#595af5 on its dark surface

3.64:1

CSS3 live lab

Text font color

The quick brown fox

color: #595af5;
Background color
Panel with #595af5 background
background-color: #595af5;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #595af5;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(89, 90, 245, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(89, 90, 245, 0.45);
Border & gradient
Gradient panel
border: 3px solid #595af5;
background: linear-gradient(135deg, #595af5, #C059F5);
Gradient text

Gradient headline

background: linear-gradient(90deg, #595af5, #E759F5);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #595af5;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #595af5;
caret-color: #595af5;
Left rule
Pull quote or callout
border-left: 4px solid #595af5;
Ring + tint
Selected chip
background: #E7E7FE;
box-shadow: inset 0 0 0 2px #595af5;
Conic badge
68%
background: conic-gradient(#595af5 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #595af5 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(89, 90, 245, 0.5)
rgb(89 90 245 / 50%)
#595af580
hsl(240 89% 66% / 50%)
color-mix(in srgb, #595af5 50%, transparent)
Alpha8-digit hexFlat on white
10%#595af51a#EEEFFE
20%#595af533#DEDEFD
40%#595af566#BDBDFB
60%#595af599#9B9CF9
80%#595af5cc#7A7BF7

Gradients from #595af5

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, #9393F8, #595af5 45%, #070878);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #595af5, #C43CF3);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #595af5, #F5F459);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #B0B0FA 0%, #595af5 45%, #070878 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%, #89CAF8 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #C076F7 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #070878 0%, transparent 65%), #595af5;

Monochromatic scale

Palettes built from #595af5

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.

#595af5 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

Too dim on dark surfaces at 4.21:1 — lift it to #6364F6 for body text, or reserve it for fills.

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.

#595af5, answered

What color is #595af5?

#595af5 is a light electric blue, closest to Slate Blue (ΔE2000 5.7). It sits at 240° on the hue wheel with 89% saturation and 66% lightness, which reads as cool.

What is the RGB value of #595af5?

rgb(89, 90, 245) — 89 red, 90 green and 245 blue out of 255, or 34.9% / 35.3% / 96.1% by channel.

What is #595af5 in HSL and HSV?

hsl(240, 89%, 66%) and hsv(240, 64%, 96%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #595af5 a light or a dark color?

It is a dark color. Relative luminance is 0.1603 and perceived brightness is 46%, so white text on it reaches 4.99:1.

Should I use black or white text on #595af5?

White. It scores 4.99:1 against #595af5, versus 4.21:1 for black — AA at any size.

Is #595af5 accessible on a white background?

#595af5 on white scores 4.99:1, which clears AA at every size but not AAA.

What is the complementary color of #595af5?

#F5F459 sits directly opposite on the wheel. Softer options are the split-complements #F5A659 and #A8F559, which give the same contrast with far less vibration.

What colors go well with #595af5?

For interface work: #F4F4FA as the surface, #C0C0ED for borders, #4B4B9B for secondary text, #C49408 as an accent and #070878 for hover and pressed states. For a palette, the analogous pair #59A8F5 and #A659F5 stays calm, while #F5F459 is the loudest partner.

What is #595af5 in CMYK for printing?

cmyk(64%, 63%, 0%, 4%). 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 #595af5 warm or cool?

Cool — it scores 84 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #9159F5; nudged cooler, #5781F7.

Which Tailwind color is closest to #595af5?

The indigo family — its 500 step is #6366f1, ΔE2000 3.7 away. That is a visible difference, so define #595af5 as a custom token rather than reaching for the built-in.

How do I use #595af5 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#595af5] or text-[#595af5], 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 #595af5 with 50% opacity?

rgba(89, 90, 245, 0.5), or #595af580 in eight-digit hex. Over white that composites to #ACADFA; over black, #2D2D7B.

Is #595af5 a web-safe color?

No. The nearest web-safe colour is #6666FF, ΔE2000 4.3 away. The palette only matters for legacy displays and some email clients now.

What does the color #595af5 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 #595af5?

The safest is same-hue elevation: linear-gradient(135deg, #9393F8, #595af5 45%, #070878). For more colour, a short hue run to #C43CF3 keeps it rich without turning muddy.

Work with #595af5 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #595af5 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.