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blue · cool

#613fec

a balanced, electric blue · cool · closest name: Blue Violet

Token name suggestion: True Sapphire

RGB
97, 63, 236
HSL
252°, 82%, 59%
CMYK
59, 73, 0, 8
Luminance
0.1215

#613fec is a balanced electric blue, 252° on the wheel and 77/100 on the cool side. Put white text on it (6.12:1). As text it scores 6.12:1 on white — safe at any size. Nearest name is Blue Violet, nearest Tailwind family is violet.

hsl(252 82% 59%)rgb(97 63 236)Base step 500AA inkCool

At a glance

Every number on this page in one read: what #613fec is made of, how bright it looks, and which way it leans.

Hex
#613fec
Hue
252°
blue
Saturation
82%
electric
Lightness
59%
balanced
Brightness
93%
HSV value
Perceived
42%
weighted brightness
Luminance
0.1215
WCAG relative
Temperature
Cool
77/100 cool
Color family
Blue
Tone
Electric
Best ink
White
6.12:1
Closest name
Blue Violet
ΔE2000 6.5
Chroma
100.6
LCH, 0–130ish
OKLCH L
0.521
perceptual lightness
Tailwind
violet
500 · ΔE 10.2
Web-safe
#6633FF
nearest of 216
Where it sits
Hue252° of 360°
Saturation82%
Lightness59%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #613fec.

Temperature
Warm ← → Cool77% 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
Red21%
Green29%
Blue50%

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

Every format

HEX#613fec
HEX (8-digit)#613fecff
RGBrgb(97, 63, 236)
RGBArgba(97, 63, 236, 1)
HSLhsl(252, 82%, 59%)
HSV / HSBhsv(252, 73%, 93%)
HWBhwb(252 25% 7%)
CMYKcmyk(59%, 73%, 0%, 8%)
LABlab(41.5 58.6 -81.8)
LCHlch(41.5 100.6 305.6)
OKLCHoklch(0.521 0.242 283.1)
XYZ (D65)xyz(21.84, 12.15, 80.53)
Decimal6373356
Display P3color(display-p3 0.380 0.247 0.925)
Web-safe#6633FF

Copy-ready code

every platformclick to select
/* CSS */
color: #613fec;
background-color: #613fec;
/* CSS custom property */
--brand: #613fec;
/* Tailwind (arbitrary) */
class="text-[#613fec] bg-[#613fec]"
/* SCSS */
$brand: #613fec;
/* SwiftUI */
Color(red: 0.380, green: 0.247, blue: 0.925)
/* UIKit */
UIColor(red: 0.380, green: 0.247, blue: 0.925, alpha: 1)
/* Android XML */
<color name="brand">#613FEC</color>
/* Android Compose */
Color(0xFF613FEC)
/* Flutter */
Color(0xFF613FEC)
/* Python / OpenCV (BGR) */
(236, 63, 97)
/* Python / PIL (RGB) */
(97, 63, 236)
/* Java AWT */
new Color(97, 63, 236)
/* .NET */
Color.FromArgb(255, 97, 63, 236)
/* OpenGL / Unity (0–1) */
(0.3804f, 0.2471f, 0.9255f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{97,63,236}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #613fec 85%, white);
border-color: color-mix(in oklab, #613fec 40%, transparent);
/* theme-aware in one line */
color: light-dark(#200B74, #D8D3EE);
/* relative colour syntax */
--hover: hsl(from #613fec 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: #F4F2FC;
  --brand-100: #EAE6F9;
  --brand-200: #CFC6F6;
  --brand-300: #AB99F5;
  --brand-400: #8166F0;
  --brand-500: #613fec;
  --brand-600: #3E16DF;
  --brand-700: #3312BA;
  --brand-800: #290F95;
  --brand-900: #210F6B;
  --brand-950: #150943;
  --brand: #613fec;
  --brand-ink: #ffffff;
  --brand-surface: #F5F4FA;
  --brand-border: #C9C0ED;
  --brand-hover: #461EE9;
  --brand-pressed: #3914CF;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #171424;
    --brand-ink: #D8D3EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4F2FC',
        100: '#EAE6F9',
        200: '#CFC6F6',
        300: '#AB99F5',
        400: '#8166F0',
        500: '#613fec',
        600: '#3E16DF',
        700: '#3312BA',
        800: '#290F95',
        900: '#210F6B',
        950: '#150943',
        DEFAULT: '#613fec',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4F2FC,
  '100': #EAE6F9,
  '200': #CFC6F6,
  '300': #AB99F5,
  '400': #8166F0,
  '500': #613fec,
  '600': #3E16DF,
  '700': #3312BA,
  '800': #290F95,
  '900': #210F6B,
  '950': #150943,
);
$brand-base: #613fec;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4F2FC", "$type": "color" },
      "100": { "$value": "#EAE6F9", "$type": "color" },
      "200": { "$value": "#CFC6F6", "$type": "color" },
      "300": { "$value": "#AB99F5", "$type": "color" },
      "400": { "$value": "#8166F0", "$type": "color" },
      "500": { "$value": "#613fec", "$type": "color" },
      "600": { "$value": "#3E16DF", "$type": "color" },
      "700": { "$value": "#3312BA", "$type": "color" },
      "800": { "$value": "#290F95", "$type": "color" },
      "900": { "$value": "#210F6B", "$type": "color" },
      "950": { "$value": "#150943", "$type": "color" }
    },
    "brandInk": { "$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 #613fec · 6.12:1
Use #ffffffAA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 6.12:1 · recommended
AA pass · AA large pass · AAA fail
Aa
Black text · 3.43:1
AA fail · AA large pass · AAA fail
Reading the other direction: #613fec as text scores 6.12:1 on white and 3.43:1 on black.
Best tinted ink on it, if plain black or white feels flat: #ECE8FD at 5.11:1.

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
#613fec · 6.12:1
AA on whitealready passes
#613fec
The quick fox
#522CEA · 7.22:1
AAA on white−4% L
#522CEA
The quick fox
#785BEF · 4.54:1
AA on black+6% L
#785BEF
The quick fox
#9E89F3 · 7.33:1
AAA on black+16% L
#9E89F3

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #613FEC 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
#613fec on white: 6.12:1
AA ✓ pass · AA-large · AAA
Aa
#613fec on black: 3.43:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #613fec as text on that neutral, and that neutral as text on #613fec.

NeutralRatioBoth directions
White6.12:1AaAa
Slate 505.85:1AaAa
Slate 1005.59:1AaAa
Slate 2004.97:1AaAa
Slate 3004.12:1AaAa
Slate 4002.39:1AaAa
Slate 5001.29:1AaAa
Slate 6001.24:1AaAa
Slate 7001.69:1AaAa
Slate 8002.39:1AaAa
Slate 9002.92:1AaAa
Black3.43:1AaAa
Colour vision deficiency
true color
protanopia · #0067F1
deuteranopia · #005CE9
tritanopia · #007093

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. #613fec is pinned to step 500; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F4F2FC
#EAE6F9
#CFC6F6
#AB99F5
#8166F0
#613fec
#3E16DF
#3312BA
#290F95
#210F6B
#150943
Base = 500Lightest = 50 · #F4F2FCDarkest = 950 · #150943Text 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 0.061 283.1);
  --brand-100: oklch(0.94 0.097 283.1);
  --brand-200: oklch(0.88 0.145 283.1);
  --brand-300: oklch(0.80 0.189 283.1);
  --brand-400: oklch(0.72 0.223 283.1);
  --brand-500: oklch(0.64 0.242 283.1);
  --brand-600: oklch(0.56 0.242 283.1);
  --brand-700: oklch(0.48 0.228 283.1);
  --brand-800: oklch(0.40 0.203 283.1);
  --brand-900: oklch(0.32 0.169 283.1);
  --brand-950: oklch(0.24 0.133 283.1);
}

Colors that work with #613fec

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#F5F4FA
Tinted page background
Border#C9C0ED
Hairlines and dividers
Muted text#5A4B9B
Captions on the surface
Accent#BEB50E
Second voice, not a rival
Dark variant#200B74
Hover, pressed, headers
Light variant#ECE8FD
Selected rows, tints
Dark surface#171424
Dark-mode background
Hover#461EE9
One step down in lightness
Pressed#3914CF
Two steps down
Disabled#C7C3D8
Chroma pulled out
Focus ring#6A48F7
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 #613fec

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
  • Brand accents, badges and data highlights
  • Chart series and data categories
Use with care
  • Full-page backgrounds — tiring over long sessions
  • 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 mid lightness keeps it versatile in both themes.

Worth knowing

It is also the most crowded hue on the web. Distinctiveness has to come from your other choices.

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight41/100
  • 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#CAEC3F
Analogous left#3F73EC
Analogous right#B73FEC
Split-complement 1#ECB73F
Split-complement 2#73EC3F
Triadic 1#EC613F
Triadic 2#3FEC61
Tetradic#EC3F73
On the wheel
Base+30°−30°+120°+240°+180°252°

#613fec sits at 252°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red38.0%
Green24.7%
Blue92.5%
R · 0–255
97
0x61
G · 0–255
63
0x3f
B · 0–255
236
0xec

CMYK percentages

Cyan58.9%
Magenta73.3%
Yellow0.0%
Key (black)7.5%

Total ink coverage is 140%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#613fec text on a black background

contrast 3.43:1

Card sample

#613fec text on a white background

contrast 6.12:1

Card sample

#613fec on grey

5.59:1

#613fec on its own surface

5.60:1

#613fec on its dark surface

2.95:1

CSS3 live lab

Text font color

The quick brown fox

color: #613fec;
Background color
Panel with #613fec background
background-color: #613fec;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #613fec;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(97, 63, 236, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(97, 63, 236, 0.45);
Border & gradient
Gradient panel
border: 3px solid #613fec;
background: linear-gradient(135deg, #613fec, #D43FEC);
Gradient text

Gradient headline

background: linear-gradient(90deg, #613fec, #EC3FD8);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #613fec;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #613fec;
caret-color: #613fec;
Left rule
Pull quote or callout
border-left: 4px solid #613fec;
Ring + tint
Selected chip
background: #ECE8FD;
box-shadow: inset 0 0 0 2px #613fec;
Conic badge
68%
background: conic-gradient(#613fec 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #613fec 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(97, 63, 236, 0.5)
rgb(97 63 236 / 50%)
#613fec80
hsl(252 82% 59% / 50%)
color-mix(in srgb, #613fec 50%, transparent)
Alpha8-digit hexFlat on white
10%#613fec1a#EFECFD
20%#613fec33#DFD9FB
40%#613fec66#C0B2F7
60%#613fec99#A08CF4
80%#613feccc#8165F0

Gradients from #613fec

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, #8F77F2, #613fec 45%, #200B74);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #613fec, #DF23E9);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #613fec, #CAEC3F);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #A692F4 0%, #613fec 45%, #200B74 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F5F4FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #6DA0F1 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #CE5BEF 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #200B74 0%, transparent 65%), #613fec;

Monochromatic scale

Palettes built from #613fec

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.

#613fec 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
ButtonsLinksFocus statesCharts
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 3.43:1 — lift it to #785BEF 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.

#613fec, answered

What color is #613fec?

#613fec is a balanced electric blue, closest to Blue Violet (ΔE2000 6.5). It sits at 252° on the hue wheel with 82% saturation and 59% lightness, which reads as cool.

What is the RGB value of #613fec?

rgb(97, 63, 236) — 97 red, 63 green and 236 blue out of 255, or 38% / 24.7% / 92.5% by channel.

What is #613fec in HSL and HSV?

hsl(252, 82%, 59%) and hsv(252, 73%, 93%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #613fec a light or a dark color?

It is a dark color. Relative luminance is 0.1215 and perceived brightness is 42%, so white text on it reaches 6.12:1.

Should I use black or white text on #613fec?

White. It scores 6.12:1 against #613fec, versus 3.43:1 for black — AA at any size.

Is #613fec accessible on a white background?

#613fec on white scores 6.12:1, which clears AA at every size but not AAA.

What is the complementary color of #613fec?

#CAEC3F sits directly opposite on the wheel. Softer options are the split-complements #ECB73F and #73EC3F, which give the same contrast with far less vibration.

What colors go well with #613fec?

For interface work: #F5F4FA as the surface, #C9C0ED for borders, #5A4B9B for secondary text, #BEB50E as an accent and #200B74 for hover and pressed states. For a palette, the analogous pair #3F73EC and #B73FEC stays calm, while #CAEC3F is the loudest partner.

What is #613fec in CMYK for printing?

cmyk(59%, 73%, 0%, 8%). 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 #613fec warm or cool?

Cool — it scores 77 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #A03FEC; nudged cooler, #3D5BEE.

Which Tailwind color is closest to #613fec?

The violet family — its 500 step is #8b5cf6, ΔE2000 10.2 away. That is a visible difference, so define #613fec as a custom token rather than reaching for the built-in.

How do I use #613fec in Tailwind CSS?

Inline it as an arbitrary value with bg-[#613fec] or text-[#613fec], 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 #613fec with 50% opacity?

rgba(97, 63, 236, 0.5), or #613fec80 in eight-digit hex. Over white that composites to #B09FF6; over black, #312076.

Is #613fec a web-safe color?

No. The nearest web-safe colour is #6633FF, ΔE2000 2.7 away. The palette only matters for legacy displays and some email clients now.

What does the color #613fec 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 #613fec?

The safest is same-hue elevation: linear-gradient(135deg, #8F77F2, #613fec 45%, #200B74). For more colour, a short hue run to #DF23E9 keeps it rich without turning muddy.

Work with #613fec in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #613fec at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.