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blue · cool

#6471af

a balanced, soft blue · cool · closest name: Royal Blue

Token name suggestion: Atlas Cobalt

RGB
100, 113, 175
HSL
230°, 32%, 54%
CMYK
43, 35, 0, 31
Luminance
0.1761

#6471af is a balanced soft blue, 230° on the wheel and 86/100 on the cool side. Put white text on it (4.64:1). As text it scores 4.64:1 on white — safe at any size. Nearest name is Royal Blue, nearest Tailwind family is slate.

hsl(230 32% 54%)rgb(100 113 175)Base step 500AA inkCool

At a glance

Every number on this page in one read: what #6471af is made of, how bright it looks, and which way it leans.

Hex
#6471af
Hue
230°
blue
Saturation
32%
soft
Lightness
54%
balanced
Brightness
69%
HSV value
Perceived
46%
weighted brightness
Luminance
0.1761
WCAG relative
Temperature
Cool
86/100 cool
Color family
Blue
Tone
Soft
Best ink
White
4.64:1
Closest name
Royal Blue
ΔE2000 8.7
Chroma
36.5
LCH, 0–130ish
OKLCH L
0.565
perceptual lightness
Tailwind
slate
500 · ΔE 8.2
Web-safe
#666699
nearest of 216
Where it sits
Hue230° of 360°
Saturation32%
Lightness54%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #6471af.

Temperature
Warm ← → Cool86% 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
Red15%
Green67%
Blue18%

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

Every format

HEX#6471af
HEX (8-digit)#6471afff
RGBrgb(100, 113, 175)
RGBArgba(100, 113, 175, 1)
HSLhsl(230, 32%, 54%)
HSV / HSBhsv(230, 43%, 69%)
HWBhwb(230 39% 31%)
CMYKcmyk(43%, 35%, 0%, 31%)
LABlab(49.0 11.5 -34.6)
LCHlch(49.0 36.5 288.5)
OKLCHoklch(0.565 0.097 273.9)
XYZ (D65)xyz(18.90, 17.61, 42.95)
Decimal6582703
Display P3color(display-p3 0.392 0.443 0.686)
Web-safe#666699

Copy-ready code

every platformclick to select
/* CSS */
color: #6471af;
background-color: #6471af;
/* CSS custom property */
--brand: #6471af;
/* Tailwind (arbitrary) */
class="text-[#6471af] bg-[#6471af]"
/* SCSS */
$brand: #6471af;
/* SwiftUI */
Color(red: 0.392, green: 0.443, blue: 0.686)
/* UIKit */
UIColor(red: 0.392, green: 0.443, blue: 0.686, alpha: 1)
/* Android XML */
<color name="brand">#6471AF</color>
/* Android Compose */
Color(0xFF6471AF)
/* Flutter */
Color(0xFF6471AF)
/* Python / OpenCV (BGR) */
(175, 113, 100)
/* Python / PIL (RGB) */
(100, 113, 175)
/* Java AWT */
new Color(100, 113, 175)
/* .NET */
Color.FromArgb(255, 100, 113, 175)
/* OpenGL / Unity (0–1) */
(0.3922f, 0.4431f, 0.6863f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{100,113,175}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #6471af 85%, white);
border-color: color-mix(in oklab, #6471af 40%, transparent);
/* theme-aware in one line */
color: light-dark(#2B3254, #D7DAEA);
/* relative colour syntax */
--hover: hsl(from #6471af 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: #F5F6F9;
  --brand-100: #ECEDF4;
  --brand-200: #D5D8E7;
  --brand-300: #B5BBD9;
  --brand-400: #9099C6;
  --brand-500: #6471af;
  --brand-600: #5361A1;
  --brand-700: #455187;
  --brand-800: #38416C;
  --brand-900: #2B314F;
  --brand-950: #1B1F31;
  --brand: #6471af;
  --brand-ink: #ffffff;
  --brand-surface: #F5F6FA;
  --brand-border: #C9CEE3;
  --brand-hover: #515F9E;
  --brand-pressed: #455186;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141724;
    --brand-ink: #D7DAEA;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F5F6F9',
        100: '#ECEDF4',
        200: '#D5D8E7',
        300: '#B5BBD9',
        400: '#9099C6',
        500: '#6471af',
        600: '#5361A1',
        700: '#455187',
        800: '#38416C',
        900: '#2B314F',
        950: '#1B1F31',
        DEFAULT: '#6471af',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F5F6F9,
  '100': #ECEDF4,
  '200': #D5D8E7,
  '300': #B5BBD9,
  '400': #9099C6,
  '500': #6471af,
  '600': #5361A1,
  '700': #455187,
  '800': #38416C,
  '900': #2B314F,
  '950': #1B1F31,
);
$brand-base: #6471af;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F5F6F9", "$type": "color" },
      "100": { "$value": "#ECEDF4", "$type": "color" },
      "200": { "$value": "#D5D8E7", "$type": "color" },
      "300": { "$value": "#B5BBD9", "$type": "color" },
      "400": { "$value": "#9099C6", "$type": "color" },
      "500": { "$value": "#6471af", "$type": "color" },
      "600": { "$value": "#5361A1", "$type": "color" },
      "700": { "$value": "#455187", "$type": "color" },
      "800": { "$value": "#38416C", "$type": "color" },
      "900": { "$value": "#2B314F", "$type": "color" },
      "950": { "$value": "#1B1F31", "$type": "color" }
    },
    "brandInk": { "$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 #6471af · 4.64:1
Use #ffffffAA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 4.64:1 · recommended
AA pass · AA large pass · AAA fail
Aa
Black text · 4.52:1
AA pass · AA large pass · AAA fail
Reading the other direction: #6471af as text scores 4.64:1 on white and 4.52:1 on black.
Best tinted ink on it, if plain black or white feels flat: #EEF0F6 at 4.07:1.

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
#6471af · 4.64:1
AA on whitealready passes
#6471af
The quick fox
#49558D · 7.08:1
AAA on white−12% L
#49558D
The quick fox
#6471af · 4.52:1
AA on blackalready passes
#6471af
The quick fox
#8993C2 · 7.02:1
AAA on black+11% L
#8993C2

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #6471AF 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
#6471af on white: 4.64:1
AA ✓ pass · AA-large · AAA
Aa
#6471af on black: 4.52:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #6471af as text on that neutral, and that neutral as text on #6471af.

NeutralRatioBoth directions
White4.64:1AaAa
Slate 504.44:1AaAa
Slate 1004.24:1AaAa
Slate 2003.77:1AaAa
Slate 3003.13:1AaAa
Slate 4001.81:1AaAa
Slate 5001.02:1AaAa
Slate 6001.63:1AaAa
Slate 7002.23:1AaAa
Slate 8003.15:1AaAa
Slate 9003.85:1AaAa
Black4.52:1AaAa
Colour vision deficiency
true color
protanopia · #5B78B2
deuteranopia · #5572AE
tritanopia · #4B7E88

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. #6471af 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.

#F5F6F9
#ECEDF4
#D5D8E7
#B5BBD9
#9099C6
#6471af
#5361A1
#455187
#38416C
#2B314F
#1B1F31
Base = 500Lightest = 50 · #F5F6F9Darkest = 950 · #1B1F31Text 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 0.024 273.9);
  --brand-100: oklch(0.94 0.039 273.9);
  --brand-200: oklch(0.88 0.058 273.9);
  --brand-300: oklch(0.80 0.076 273.9);
  --brand-400: oklch(0.72 0.090 273.9);
  --brand-500: oklch(0.64 0.097 273.9);
  --brand-600: oklch(0.56 0.097 273.9);
  --brand-700: oklch(0.48 0.091 273.9);
  --brand-800: oklch(0.40 0.082 273.9);
  --brand-900: oklch(0.32 0.068 273.9);
  --brand-950: oklch(0.24 0.054 273.9);
}

Colors that work with #6471af

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#F5F6FA
Tinted page background
Border#C9CEE3
Hairlines and dividers
Muted text#4E5B97
Captions on the surface
Accent#8B6C41
Second voice, not a rival
Dark variant#2B3254
Hover, pressed, headers
Light variant#EEF0F6
Selected rows, tints
Dark surface#141724
Dark-mode background
Hover#515F9E
One step down in lightness
Pressed#455186
Two steps down
Disabled#B4B9CF
Chroma pulled out
Focus ring#6776C1
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 #6471af

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

Works well for
  • Body text and links on white
  • Text and icons on dark surfaces
  • Charts, tags and secondary surfaces
  • Brand accents, badges and data highlights
  • Chart series and data categories
Use with care
  • 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.

The muted chroma softens the association — it reads considered rather than loud, which suits long-form and data-heavy screens. 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
  • FormalityMedium
  • EnergyMedium
  • Weight46/100
  • 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#AFA264
Analogous left#6496AF
Analogous right#7C64AF
Split-complement 1#AF7C64
Split-complement 2#96AF64
Triadic 1#AF6471
Triadic 2#71AF64
Tetradic#AF6496
On the wheel
Base+30°−30°+120°+240°+180°230°

#6471af sits at 230°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red39.2%
Green44.3%
Blue68.6%
R · 0–255
100
0x64
G · 0–255
113
0x71
B · 0–255
175
0xaf

CMYK percentages

Cyan42.9%
Magenta35.4%
Yellow0.0%
Key (black)31.4%

Total ink coverage is 110%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#6471af text on a black background

contrast 4.52:1

Card sample

#6471af text on a white background

contrast 4.64:1

Card sample

#6471af on grey

4.24:1

#6471af on its own surface

4.30:1

#6471af on its dark surface

3.84:1

CSS3 live lab

Text font color

The quick brown fox

color: #6471af;
Background color
Panel with #6471af background
background-color: #6471af;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #6471af;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(100, 113, 175, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(100, 113, 175, 0.45);
Border & gradient
Gradient panel
border: 3px solid #6471af;
background: linear-gradient(135deg, #6471af, #8964AF);
Gradient text

Gradient headline

background: linear-gradient(90deg, #6471af, #9C64AF);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #6471af;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #6471af;
caret-color: #6471af;
Left rule
Pull quote or callout
border-left: 4px solid #6471af;
Ring + tint
Selected chip
background: #EEF0F6;
box-shadow: inset 0 0 0 2px #6471af;
Conic badge
68%
background: conic-gradient(#6471af 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #6471af 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(100, 113, 175, 0.5)
rgb(100 113 175 / 50%)
#6471af80
hsl(230 32% 54% / 50%)
color-mix(in srgb, #6471af 50%, transparent)
Alpha8-digit hexFlat on white
10%#6471af1a#F0F1F7
20%#6471af33#E0E3EF
40%#6471af66#C1C6DF
60%#6471af99#A2AACF
80%#6471afcc#838DBF

Gradients from #6471af

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, #8C96C4, #6471af 45%, #2B3254);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #6471af, #8053A1);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #6471af, #AFA264);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #A0A8CE 0%, #6471af 45%, #2B3254 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F5F6FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #86B2C0 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #9378B9 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #2B3254 0%, transparent 65%), #6471af;

Monochromatic scale

Palettes built from #6471af

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.

#6471af 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

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 4.52:1.

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.

#6471af, answered

What color is #6471af?

#6471af is a balanced soft blue, closest to Royal Blue (ΔE2000 8.7). It sits at 230° on the hue wheel with 32% saturation and 54% lightness, which reads as cool.

What is the RGB value of #6471af?

rgb(100, 113, 175) — 100 red, 113 green and 175 blue out of 255, or 39.2% / 44.3% / 68.6% by channel.

What is #6471af in HSL and HSV?

hsl(230, 32%, 54%) and hsv(230, 43%, 69%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #6471af a light or a dark color?

It is a dark color. Relative luminance is 0.1761 and perceived brightness is 46%, so white text on it reaches 4.64:1.

Should I use black or white text on #6471af?

White. It scores 4.64:1 against #6471af, versus 4.52:1 for black — AA at any size.

Is #6471af accessible on a white background?

#6471af on white scores 4.64:1, which clears AA at every size but not AAA.

What is the complementary color of #6471af?

#AFA264 sits directly opposite on the wheel. Softer options are the split-complements #AF7C64 and #96AF64, which give the same contrast with far less vibration.

What colors go well with #6471af?

For interface work: #F5F6FA as the surface, #C9CEE3 for borders, #4E5B97 for secondary text, #8B6C41 as an accent and #2B3254 for hover and pressed states. For a palette, the analogous pair #6496AF and #7C64AF stays calm, while #AFA264 is the loudest partner.

What is #6471af in CMYK for printing?

cmyk(43%, 35%, 0%, 31%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #6471af warm or cool?

Cool — it scores 86 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #7264AF; nudged cooler, #6281B1.

Which Tailwind color is closest to #6471af?

The slate family — its 500 step is #64748b, ΔE2000 8.2 away. That is a visible difference, so define #6471af as a custom token rather than reaching for the built-in.

How do I use #6471af in Tailwind CSS?

Inline it as an arbitrary value with bg-[#6471af] or text-[#6471af], 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 #6471af with 50% opacity?

rgba(100, 113, 175, 0.5), or #6471af80 in eight-digit hex. Over white that composites to #B2B8D7; over black, #323958.

Is #6471af a web-safe color?

No. The nearest web-safe colour is #666699, ΔE2000 6.1 away. The palette only matters for legacy displays and some email clients now.

What does the color #6471af 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 moderate chroma the association is present but not shouted.

What gradient works with #6471af?

The safest is same-hue elevation: linear-gradient(135deg, #8C96C4, #6471af 45%, #2B3254). For more colour, a short hue run to #8053A1 keeps it rich without turning muddy.

Work with #6471af in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #6471af at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.