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blue · cool

#7b71df

a light, vivid blue · cool · closest name: Medium Slate Blue

Token name suggestion: Meadow Cobalt

RGB
123, 113, 223
HSL
246°, 63%, 66%
CMYK
45, 49, 0, 13
Luminance
0.2135

#7b71df is a light vivid blue, 246° on the wheel and 80/100 on the cool side. Put black text on it (5.27:1). As text it scores 3.98:1 on white — large text only. Nearest name is Medium Slate Blue, nearest Tailwind family is indigo.

hsl(246 63% 66%)rgb(123 113 223)Base step 400AA inkCool

At a glance

Every number on this page in one read: what #7b71df is made of, how bright it looks, and which way it leans.

Hex
#7b71df
Hue
246°
blue
Saturation
63%
vivid
Lightness
66%
light
Brightness
87%
HSV value
Perceived
52%
weighted brightness
Luminance
0.2135
WCAG relative
Temperature
Cool
80/100 cool
Color family
Blue
Tone
Vivid
Best ink
Black
5.27:1
Closest name
Medium Slate Blue
ΔE2000 3.4
Chroma
63.4
LCH, 0–130ish
OKLCH L
0.610
perceptual lightness
Tailwind
indigo
500 · ΔE 5.4
Web-safe
#6666CC
nearest of 216
Where it sits
Hue246° of 360°
Saturation63%
Lightness66%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #7b71df.

Temperature
Warm ← → Cool80% 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
Red20%
Green55%
Blue25%

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

Every format

HEX#7b71df
HEX (8-digit)#7b71dfff
RGBrgb(123, 113, 223)
RGBArgba(123, 113, 223, 1)
HSLhsl(246, 63%, 66%)
HSV / HSBhsv(245, 49%, 87%)
HWBhwb(246 44% 13%)
CMYKcmyk(45%, 49%, 0%, 13%)
LABlab(53.3 31.4 -55.1)
LCHlch(53.3 63.4 299.7)
OKLCHoklch(0.610 0.162 284.7)
XYZ (D65)xyz(27.39, 21.35, 72.48)
Decimal8090079
Display P3color(display-p3 0.482 0.443 0.875)
Web-safe#6666CC

Copy-ready code

every platformclick to select
/* CSS */
color: #7b71df;
background-color: #7b71df;
/* CSS custom property */
--brand: #7b71df;
/* Tailwind (arbitrary) */
class="text-[#7b71df] bg-[#7b71df]"
/* SCSS */
$brand: #7b71df;
/* SwiftUI */
Color(red: 0.482, green: 0.443, blue: 0.875)
/* UIKit */
UIColor(red: 0.482, green: 0.443, blue: 0.875, alpha: 1)
/* Android XML */
<color name="brand">#7B71DF</color>
/* Android Compose */
Color(0xFF7B71DF)
/* Flutter */
Color(0xFF7B71DF)
/* Python / OpenCV (BGR) */
(223, 113, 123)
/* Python / PIL (RGB) */
(123, 113, 223)
/* Java AWT */
new Color(123, 113, 223)
/* .NET */
Color.FromArgb(255, 123, 113, 223)
/* OpenGL / Unity (0–1) */
(0.4824f, 0.4431f, 0.8745f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{123,113,223}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #7b71df 85%, white);
border-color: color-mix(in oklab, #7b71df 40%, transparent);
/* theme-aware in one line */
color: light-dark(#1F1768, #D5D3EE);
/* relative colour syntax */
--hover: hsl(from #7b71df 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: #F4F4FB;
  --brand-100: #EAE8F7;
  --brand-200: #CFCBF0;
  --brand-300: #AAA3EA;
  --brand-400: #7b71df;
  --brand-500: #5548D6;
  --brand-600: #3B2DC8;
  --brand-700: #3126A6;
  --brand-800: #271E85;
  --brand-900: #201A61;
  --brand-950: #14103C;
  --brand: #7b71df;
  --brand-ink: #000000;
  --brand-surface: #F5F4FA;
  --brand-border: #C4C0ED;
  --brand-hover: #6054D8;
  --brand-pressed: #4537D2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #151424;
    --brand-ink: #D5D3EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4F4FB',
        100: '#EAE8F7',
        200: '#CFCBF0',
        300: '#AAA3EA',
        400: '#7b71df',
        500: '#5548D6',
        600: '#3B2DC8',
        700: '#3126A6',
        800: '#271E85',
        900: '#201A61',
        950: '#14103C',
        DEFAULT: '#7b71df',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4F4FB,
  '100': #EAE8F7,
  '200': #CFCBF0,
  '300': #AAA3EA,
  '400': #7b71df,
  '500': #5548D6,
  '600': #3B2DC8,
  '700': #3126A6,
  '800': #271E85,
  '900': #201A61,
  '950': #14103C,
);
$brand-base: #7b71df;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4F4FB", "$type": "color" },
      "100": { "$value": "#EAE8F7", "$type": "color" },
      "200": { "$value": "#CFCBF0", "$type": "color" },
      "300": { "$value": "#AAA3EA", "$type": "color" },
      "400": { "$value": "#7b71df", "$type": "color" },
      "500": { "$value": "#5548D6", "$type": "color" },
      "600": { "$value": "#3B2DC8", "$type": "color" },
      "700": { "$value": "#3126A6", "$type": "color" },
      "800": { "$value": "#271E85", "$type": "color" },
      "900": { "$value": "#201A61", "$type": "color" },
      "950": { "$value": "#14103C", "$type": "color" }
    },
    "brandInk": { "$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 #7b71df · 5.27:1
Use #000000AA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 3.98:1
AA fail · AA large pass · AAA fail
Aa
Black text · 5.27:1 · recommended
AA pass · AA large pass · AAA fail
Reading the other direction: #7b71df as text scores 3.98:1 on white and 5.27:1 on black.
Best tinted ink on it, if plain black or white feels flat: #1F1768 at 3.82:1.

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
#7065DC · 4.58:1
AA on white−3% L
#7065DC
The quick fox
#4D3FD4 · 7.05:1
AAA on white−12% L
#4D3FD4
The quick fox
#7b71df · 5.27:1
AA on blackalready passes
#7b71df
The quick fox
#968EE6 · 7.31:1
AAA on black+7% L
#968EE6

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #7B71DF 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
#7b71df on white: 3.98:1
AA ✗ fail · AA-large · AAA
Aa
#7b71df on black: 5.27:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #7b71df as text on that neutral, and that neutral as text on #7b71df.

NeutralRatioBoth directions
White3.98:1AaAa
Slate 503.81:1AaAa
Slate 1003.64:1AaAa
Slate 2003.23:1AaAa
Slate 3002.68:1AaAa
Slate 4001.55:1AaAa
Slate 5001.19:1AaAa
Slate 6001.90:1AaAa
Slate 7002.60:1AaAa
Slate 8003.67:1AaAa
Slate 9004.48:1AaAa
Black5.27:1AaAa
Colour vision deficiency
true color
protanopia · #4183E3
deuteranopia · #3D7CDD
tritanopia · #5B889D

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. #7b71df 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.

#F4F4FB
#EAE8F7
#CFCBF0
#AAA3EA
#7b71df
#5548D6
#3B2DC8
#3126A6
#271E85
#201A61
#14103C
Base = 400Lightest = 50 · #F4F4FBDarkest = 950 · #14103CText 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 0.040 284.7);
  --brand-100: oklch(0.94 0.065 284.7);
  --brand-200: oklch(0.88 0.097 284.7);
  --brand-300: oklch(0.80 0.126 284.7);
  --brand-400: oklch(0.72 0.149 284.7);
  --brand-500: oklch(0.64 0.162 284.7);
  --brand-600: oklch(0.56 0.162 284.7);
  --brand-700: oklch(0.48 0.152 284.7);
  --brand-800: oklch(0.40 0.136 284.7);
  --brand-900: oklch(0.32 0.113 284.7);
  --brand-950: oklch(0.24 0.089 284.7);
}

Colors that work with #7b71df

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#F5F4FA
Tinted page background
Border#C4C0ED
Hairlines and dividers
Muted text#524B9B
Captions on the surface
Accent#AA9522
Second voice, not a rival
Dark variant#1F1768
Hover, pressed, headers
Light variant#ECEAFA
Selected rows, tints
Dark surface#151424
Dark-mode background
Hover#6054D8
One step down in lightness
Pressed#4537D2
Two steps down
Disabled#DBD9E7
Chroma pulled out
Focus ring#847AEA
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 #7b71df

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

Works well for
  • Headings from 24px up on white
  • 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
  • Small text on white — under 4.5:1
  • 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
24px / 18.66px bold
Safe as a fill behind white type
No — use #1F1768
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.

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
  • Weight34/100
  • 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#D5DF71
Analogous left#719EDF
Analogous right#B271DF
Split-complement 1#DFB271
Split-complement 2#9EDF71
Triadic 1#DF7B71
Triadic 2#71DF7B
Tetradic#DF719E
On the wheel
Base+30°−30°+120°+240°+180°246°

#7b71df sits at 246°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red48.2%
Green44.3%
Blue87.5%
R · 0–255
123
0x7b
G · 0–255
113
0x71
B · 0–255
223
0xdf

CMYK percentages

Cyan44.8%
Magenta49.3%
Yellow0.0%
Key (black)12.5%

Total ink coverage is 107%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#7b71df text on a black background

contrast 5.27:1

Card sample

#7b71df text on a white background

contrast 3.98:1

Card sample

#7b71df on grey

3.64:1

#7b71df on its own surface

3.64:1

#7b71df on its dark surface

4.55:1

CSS3 live lab

Text font color

The quick brown fox

color: #7b71df;
Background color
Panel with #7b71df background
background-color: #7b71df;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #7b71df;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(123, 113, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(123, 113, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #7b71df;
background: linear-gradient(135deg, #7b71df, #C471DF);
Gradient text

Gradient headline

background: linear-gradient(90deg, #7b71df, #DF71DE);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #7b71df;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #7b71df;
caret-color: #7b71df;
Left rule
Pull quote or callout
border-left: 4px solid #7b71df;
Ring + tint
Selected chip
background: #ECEAFA;
box-shadow: inset 0 0 0 2px #7b71df;
Conic badge
68%
background: conic-gradient(#7b71df 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #7b71df 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(123, 113, 223, 0.5)
rgb(123 113 223 / 50%)
#7b71df80
hsl(246 63% 66% / 50%)
color-mix(in srgb, #7b71df 50%, transparent)
Alpha8-digit hexFlat on white
10%#7b71df1a#F2F1FC
20%#7b71df33#E5E3F9
40%#7b71df66#CAC6F2
60%#7b71df99#B0AAEC
80%#7b71dfcc#958DE5

Gradients from #7b71df

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, #AAA3EA, #7b71df 45%, #1F1768);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #7b71df, #C558D9);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #7b71df, #D5DF71);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #C1BCF0 0%, #7b71df 45%, #1F1768 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%, #9BC1E8 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #C78AE5 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #1F1768 0%, transparent 65%), #7b71df;

Monochromatic scale

Palettes built from #7b71df

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.

#7b71df 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 5.27:1.

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.

#7b71df, answered

What color is #7b71df?

#7b71df is a light vivid blue, closest to Medium Slate Blue (ΔE2000 3.4). It sits at 246° on the hue wheel with 63% saturation and 66% lightness, which reads as cool.

What is the RGB value of #7b71df?

rgb(123, 113, 223) — 123 red, 113 green and 223 blue out of 255, or 48.2% / 44.3% / 87.5% by channel.

What is #7b71df in HSL and HSV?

hsl(246, 63%, 66%) and hsv(245, 49%, 87%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #7b71df a light or a dark color?

It is a mid-tone. Relative luminance is 0.2135 and perceived brightness is 52%, so black text on it reaches 5.27:1.

Should I use black or white text on #7b71df?

Black. It scores 5.27:1 against #7b71df, versus 3.98:1 for white — AA at any size.

Is #7b71df accessible on a white background?

#7b71df on white scores 3.98:1, which only clears AA for large text — 18.66px bold or 24px regular and up. Darken it to #7065DC to reach 4.5:1, or #4D3FD4 for 7:1.

What is the complementary color of #7b71df?

#D5DF71 sits directly opposite on the wheel. Softer options are the split-complements #DFB271 and #9EDF71, which give the same contrast with far less vibration.

What colors go well with #7b71df?

For interface work: #F5F4FA as the surface, #C4C0ED for borders, #524B9B for secondary text, #AA9522 as an accent and #1F1768 for hover and pressed states. For a palette, the analogous pair #719EDF and #B271DF stays calm, while #D5DF71 is the loudest partner.

What is #7b71df in CMYK for printing?

cmyk(45%, 49%, 0%, 13%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #7b71df warm or cool?

Cool — it scores 80 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #A371DF; nudged cooler, #6F8FE1.

Which Tailwind color is closest to #7b71df?

The indigo family — its 500 step is #6366f1, ΔE2000 5.4 away. That is a visible difference, so define #7b71df as a custom token rather than reaching for the built-in.

How do I use #7b71df in Tailwind CSS?

Inline it as an arbitrary value with bg-[#7b71df] or text-[#7b71df], 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 #7b71df with 50% opacity?

rgba(123, 113, 223, 0.5), or #7b71df80 in eight-digit hex. Over white that composites to #BDB8EF; over black, #3E3970.

Is #7b71df a web-safe color?

No. The nearest web-safe colour is #6666CC, ΔE2000 5.7 away. The palette only matters for legacy displays and some email clients now.

What does the color #7b71df 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 #7b71df?

The safest is same-hue elevation: linear-gradient(135deg, #AAA3EA, #7b71df 45%, #1F1768). For more colour, a short hue run to #C558D9 keeps it rich without turning muddy.

Work with #7b71df in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #7b71df at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.