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red · warm

#a3472e

a dark, vivid red · warm · closest name: Sienna

Token name suggestion: Forest Cherry

RGB
163, 71, 46
HSL
13°, 56%, 41%
CMYK
0, 56, 72, 36
Luminance
0.1249

#a3472e is a dark vivid red, 13° on the wheel and 10/100 on the cool side. Put white text on it (6.00:1). As text it scores 6.00:1 on white — safe at any size. Nearest name is Sienna, nearest Tailwind family is red.

hsl(13 56% 41%)rgb(163 71 46)Base step 700AA inkWarm

At a glance

Every number on this page in one read: what #a3472e is made of, how bright it looks, and which way it leans.

Hex
#a3472e
Hue
13°
red
Saturation
56%
vivid
Lightness
41%
dark
Brightness
64%
HSV value
Perceived
41%
weighted brightness
Luminance
0.1249
WCAG relative
Temperature
Warm
10/100 cool
Color family
Red
Tone
Vivid
Best ink
White
6.00:1
Closest name
Sienna
ΔE2000 5
Chroma
49.3
LCH, 0–130ish
OKLCH L
0.514
perceptual lightness
Tailwind
red
500 · ΔE 16.2
Web-safe
#993333
nearest of 216
Where it sits
Hue13° of 360°
Saturation56%
Lightness41%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #a3472e.

Temperature
Warm ← → Cool10% cool

Reads warm. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.

Luminance by channel
Red62%
Green36%
Blue2%

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

Every format

HEX#a3472e
HEX (8-digit)#a3472eff
RGBrgb(163, 71, 46)
RGBArgba(163, 71, 46, 1)
HSLhsl(13, 56%, 41%)
HSV / HSBhsv(13, 72%, 64%)
HWBhwb(13 18% 36%)
CMYKcmyk(0%, 56%, 72%, 36%)
LABlab(42.0 36.4 33.2)
LCHlch(42.0 49.3 42.4)
OKLCHoklch(0.514 0.128 36.1)
XYZ (D65)xyz(17.85, 12.49, 4.06)
Decimal10700590
Display P3color(display-p3 0.639 0.278 0.180)
Web-safe#993333

Copy-ready code

every platformclick to select
/* CSS */
color: #a3472e;
background-color: #a3472e;
/* CSS custom property */
--brand: #a3472e;
/* Tailwind (arbitrary) */
class="text-[#a3472e] bg-[#a3472e]"
/* SCSS */
$brand: #a3472e;
/* SwiftUI */
Color(red: 0.639, green: 0.278, blue: 0.180)
/* UIKit */
UIColor(red: 0.639, green: 0.278, blue: 0.180, alpha: 1)
/* Android XML */
<color name="brand">#A3472E</color>
/* Android Compose */
Color(0xFFA3472E)
/* Flutter */
Color(0xFFA3472E)
/* Python / OpenCV (BGR) */
(46, 71, 163)
/* Python / PIL (RGB) */
(163, 71, 46)
/* Java AWT */
new Color(163, 71, 46)
/* .NET */
Color.FromArgb(255, 163, 71, 46)
/* OpenGL / Unity (0–1) */
(0.6392f, 0.2784f, 0.1804f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{163,71,46}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #a3472e 85%, white);
border-color: color-mix(in oklab, #a3472e 40%, transparent);
/* theme-aware in one line */
color: light-dark(#632B1C, #EED9D3);
/* relative colour syntax */
--hover: hsl(from #a3472e 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: #FBF5F4;
  --brand-100: #F6ECE9;
  --brand-200: #EED4CE;
  --brand-300: #E6B5A7;
  --brand-400: #DA907C;
  --brand-500: #CE6B50;
  --brand-600: #BF5336;
  --brand-700: #a3472e;
  --brand-800: #7F3724;
  --brand-900: #5D2B1E;
  --brand-950: #3A1B13;
  --brand: #a3472e;
  --brand-ink: #ffffff;
  --brand-surface: #FAF6F4;
  --brand-border: #EDC9C0;
  --brand-hover: #873B26;
  --brand-pressed: #6B2F1E;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #241714;
    --brand-ink: #EED9D3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FBF5F4',
        100: '#F6ECE9',
        200: '#EED4CE',
        300: '#E6B5A7',
        400: '#DA907C',
        500: '#CE6B50',
        600: '#BF5336',
        700: '#a3472e',
        800: '#7F3724',
        900: '#5D2B1E',
        950: '#3A1B13',
        DEFAULT: '#a3472e',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FBF5F4,
  '100': #F6ECE9,
  '200': #EED4CE,
  '300': #E6B5A7,
  '400': #DA907C,
  '500': #CE6B50,
  '600': #BF5336,
  '700': #a3472e,
  '800': #7F3724,
  '900': #5D2B1E,
  '950': #3A1B13,
);
$brand-base: #a3472e;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FBF5F4", "$type": "color" },
      "100": { "$value": "#F6ECE9", "$type": "color" },
      "200": { "$value": "#EED4CE", "$type": "color" },
      "300": { "$value": "#E6B5A7", "$type": "color" },
      "400": { "$value": "#DA907C", "$type": "color" },
      "500": { "$value": "#CE6B50", "$type": "color" },
      "600": { "$value": "#BF5336", "$type": "color" },
      "700": { "$value": "#a3472e", "$type": "color" },
      "800": { "$value": "#7F3724", "$type": "color" },
      "900": { "$value": "#5D2B1E", "$type": "color" },
      "950": { "$value": "#3A1B13", "$type": "color" }
    },
    "brandInk": { "$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 #a3472e · 6.00:1
Use #ffffffAA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 6.00:1 · recommended
AA pass · AA large pass · AAA fail
Aa
Black text · 3.50:1
AA fail · AA large pass · AAA fail
Reading the other direction: #a3472e as text scores 6.00:1 on white and 3.50:1 on black.
Best tinted ink on it, if plain black or white feels flat: #F9EEEB at 5.28:1.

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
#a3472e · 6.00:1
AA on whitealready passes
#a3472e
The quick fox
#8F3E28 · 7.27:1
AAA on white−5% L
#8F3E28
The quick fox
#BF5336 · 4.51:1
AA on black+7% L
#BF5336
The quick fox
#D47F68 · 7.04:1
AAA on black+21% L
#D47F68

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #A3472E 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
#a3472e on white: 6.00:1
AA ✓ pass · AA-large · AAA
Aa
#a3472e on black: 3.50:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #a3472e as text on that neutral, and that neutral as text on #a3472e.

NeutralRatioBoth directions
White6.00:1AaAa
Slate 505.74:1AaAa
Slate 1005.48:1AaAa
Slate 2004.87:1AaAa
Slate 3004.04:1AaAa
Slate 4002.34:1AaAa
Slate 5001.26:1AaAa
Slate 6001.26:1AaAa
Slate 7001.72:1AaAa
Slate 8002.44:1AaAa
Slate 9002.97:1AaAa
Black3.50:1AaAa
Colour vision deficiency
true color
protanopia · #60572B
deuteranopia · #766B2C
tritanopia · #B33441

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. #a3472e is pinned to step 700; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#FBF5F4
#F6ECE9
#EED4CE
#E6B5A7
#DA907C
#CE6B50
#BF5336
#a3472e
#7F3724
#5D2B1E
#3A1B13
Base = 700Lightest = 50 · #FBF5F4Darkest = 950 · #3A1B13Text step on white = 600
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 0.032 36.1);
  --brand-100: oklch(0.94 0.051 36.1);
  --brand-200: oklch(0.88 0.077 36.1);
  --brand-300: oklch(0.80 0.100 36.1);
  --brand-400: oklch(0.72 0.118 36.1);
  --brand-500: oklch(0.64 0.128 36.1);
  --brand-600: oklch(0.56 0.128 36.1);
  --brand-700: oklch(0.48 0.121 36.1);
  --brand-800: oklch(0.40 0.108 36.1);
  --brand-900: oklch(0.32 0.090 36.1);
  --brand-950: oklch(0.24 0.071 36.1);
}

Colors that work with #a3472e

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#FAF6F4
Tinted page background
Border#EDC9C0
Hairlines and dividers
Muted text#9B5C4B
Captions on the surface
Accent#29A39F
Second voice, not a rival
Dark variant#632B1C
Hover, pressed, headers
Light variant#F9EEEB
Selected rows, tints
Dark surface#241714
Dark-mode background
Hover#873B26
One step down in lightness
Pressed#6B2F1E
Two steps down
Disabled#B5958C
Chroma pulled out
Focus ring#BE4727
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 #a3472e

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
  • Headers, footers and dark-mode surfaces
  • Brand accents, badges and data highlights
Use with care
  • Full-page backgrounds — tiring over long sessions
  • Black text placed on it
  • Status meaning — pair it with an icon or label, never colour alone
  • 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.

urgentappetisingboldphysical

Red arrives before the rest of the page does. It raises attention and appetite, which is why it runs food, sport and clearance pricing.

This is a confident chroma: strong enough to lead a brand, restrained enough to live in an interface all day. The low lightness adds weight and formality.

Worth knowing

It is also the universal error colour. Use it as a brand accent and users may read a warning that is not there.

Reads as
  • FormalityHigh
  • EnergyMedium-high
  • Weight59/100
  • TemperatureWarm
  • ApproachabilityHigh

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#2E8AA3
Analogous left#A32E50
Analogous right#A3822E
Split-complement 1#2EA382
Split-complement 2#2E50A3
Triadic 1#2EA347
Triadic 2#472EA3
Tetradic#50A32E
On the wheel
Base+30°−30°+120°+240°+180°13°

#a3472e sits at 13°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red63.9%
Green27.8%
Blue18.0%
R · 0–255
163
0xa3
G · 0–255
71
0x47
B · 0–255
46
0x2e

CMYK percentages

Cyan0.0%
Magenta56.4%
Yellow71.8%
Key (black)36.1%

Total ink coverage is 164%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#a3472e text on a black background

contrast 3.50:1

Card sample

#a3472e text on a white background

contrast 6.00:1

Card sample

#a3472e on grey

5.48:1

#a3472e on its own surface

5.59:1

#a3472e on its dark surface

2.90:1

CSS3 live lab

Text font color

The quick brown fox

color: #a3472e;
Background color
Panel with #a3472e background
background-color: #a3472e;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #a3472e;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(163, 71, 46, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(163, 71, 46, 0.45);
Border & gradient
Gradient panel
border: 3px solid #a3472e;
background: linear-gradient(135deg, #a3472e, #A3952E);
Gradient text

Gradient headline

background: linear-gradient(90deg, #a3472e, #94A32E);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #a3472e;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #a3472e;
caret-color: #a3472e;
Left rule
Pull quote or callout
border-left: 4px solid #a3472e;
Ring + tint
Selected chip
background: #F9EEEB;
box-shadow: inset 0 0 0 2px #a3472e;
Conic badge
68%
background: conic-gradient(#a3472e 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #a3472e 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(163, 71, 46, 0.5)
rgb(163 71 46 / 50%)
#a3472e80
hsl(13 56% 41% / 50%)
color-mix(in srgb, #a3472e 50%, transparent)
Alpha8-digit hexFlat on white
10%#a3472e1a#F6EDEA
20%#a3472e33#EDDAD5
40%#a3472e66#DAB5AB
60%#a3472e99#C89182
80%#a3472ecc#B56C58

Gradients from #a3472e

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, #CA6144, #a3472e 45%, #632B1C);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #a3472e, #8B8827);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #a3472e, #2E8AA3);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #D1755C 0%, #a3472e 45%, #632B1C 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #FAF6F4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #C83C70 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #BBA035 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #632B1C 0%, transparent 65%), #a3472e;

Monochromatic scale

Palettes built from #a3472e

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.

#a3472e in the real world

Where a color in this family tends to land, and the interface roles it is usually asked to play.

Industries
Food and drinkEntertainmentRetailSport
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

Too dim on dark surfaces at 3.50:1 — lift it to #BF5336 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.

#a3472e, answered

What color is #a3472e?

#a3472e is a dark vivid red, closest to Sienna (ΔE2000 5). It sits at 13° on the hue wheel with 56% saturation and 41% lightness, which reads as warm.

What is the RGB value of #a3472e?

rgb(163, 71, 46) — 163 red, 71 green and 46 blue out of 255, or 63.9% / 27.8% / 18% by channel.

What is #a3472e in HSL and HSV?

hsl(13, 56%, 41%) and hsv(13, 72%, 64%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #a3472e a light or a dark color?

It is a dark color. Relative luminance is 0.1249 and perceived brightness is 41%, so white text on it reaches 6.00:1.

Should I use black or white text on #a3472e?

White. It scores 6.00:1 against #a3472e, versus 3.50:1 for black — AA at any size.

Is #a3472e accessible on a white background?

#a3472e on white scores 6.00:1, which clears AA at every size but not AAA.

What is the complementary color of #a3472e?

#2E8AA3 sits directly opposite on the wheel. Softer options are the split-complements #2EA382 and #2E50A3, which give the same contrast with far less vibration.

What colors go well with #a3472e?

For interface work: #FAF6F4 as the surface, #EDC9C0 for borders, #9B5C4B for secondary text, #29A39F as an accent and #632B1C for hover and pressed states. For a palette, the analogous pair #A32E50 and #A3822E stays calm, while #2E8AA3 is the loudest partner.

What is #a3472e in CMYK for printing?

cmyk(0%, 56%, 72%, 36%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #a3472e warm or cool?

Warm — it scores 10 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #A3572E; nudged cooler, #A52C3F.

Which Tailwind color is closest to #a3472e?

The red family — its 500 step is #ef4444, ΔE2000 16.2 away. That is a visible difference, so define #a3472e as a custom token rather than reaching for the built-in.

How do I use #a3472e in Tailwind CSS?

Inline it as an arbitrary value with bg-[#a3472e] or text-[#a3472e], 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 #a3472e with 50% opacity?

rgba(163, 71, 46, 0.5), or #a3472e80 in eight-digit hex. Over white that composites to #D1A397; over black, #522417.

Is #a3472e a web-safe color?

No. The nearest web-safe colour is #993333, ΔE2000 8.7 away. The palette only matters for legacy displays and some email clients now.

What does the color #a3472e mean?

As a red, it reads urgent, appetising, bold. Red arrives before the rest of the page does. It raises attention and appetite, which is why it runs food, sport and clearance pricing. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #a3472e?

The safest is same-hue elevation: linear-gradient(135deg, #CA6144, #a3472e 45%, #632B1C). For more colour, a short hue run to #8B8827 keeps it rich without turning muddy.

Work with #a3472e in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #a3472e at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.