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red · warm

#ca3f2f

a balanced, vivid red · warm · closest name: Firebrick

Token name suggestion: Atlas Cherry

RGB
202, 63, 47
HSL
6°, 62%, 49%
CMYK
0, 69, 77, 21
Luminance
0.1632

#ca3f2f is a balanced vivid red, 6° on the wheel and 13/100 on the cool side. Put white text on it (4.93:1). As text it scores 4.93:1 on white — safe at any size. Nearest name is Firebrick, nearest Tailwind family is red.

hsl(6 62% 49%)rgb(202 63 47)Base step 600AA inkWarm

At a glance

Every number on this page in one read: what #ca3f2f is made of, how bright it looks, and which way it leans.

Hex
#ca3f2f
Hue
red
Saturation
62%
vivid
Lightness
49%
balanced
Brightness
79%
HSV value
Perceived
48%
weighted brightness
Luminance
0.1632
WCAG relative
Temperature
Warm
13/100 cool
Color family
Red
Tone
Vivid
Best ink
White
4.93:1
Closest name
Firebrick
ΔE2000 7.9
Chroma
67.5
LCH, 0–130ish
OKLCH L
0.567
perceptual lightness
Tailwind
red
500 · ΔE 8.7
Web-safe
#CC3333
nearest of 216
Where it sits
Hue6° of 360°
Saturation62%
Lightness49%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #ca3f2f.

Temperature
Warm ← → Cool13% 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
Red77%
Green22%
Blue1%

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

Every format

HEX#ca3f2f
HEX (8-digit)#ca3f2fff
RGBrgb(202, 63, 47)
RGBArgba(202, 63, 47, 1)
HSLhsl(6, 62%, 49%)
HSV / HSBhsv(6, 77%, 79%)
HWBhwb(6 18% 21%)
CMYKcmyk(0%, 69%, 77%, 21%)
LABlab(47.4 54.0 40.5)
LCHlch(47.4 67.5 36.8)
OKLCHoklch(0.567 0.178 30.1)
XYZ (D65)xyz(26.65, 16.32, 4.44)
Decimal13254447
Display P3color(display-p3 0.792 0.247 0.184)
Web-safe#CC3333

Copy-ready code

every platformclick to select
/* CSS */
color: #ca3f2f;
background-color: #ca3f2f;
/* CSS custom property */
--brand: #ca3f2f;
/* Tailwind (arbitrary) */
class="text-[#ca3f2f] bg-[#ca3f2f]"
/* SCSS */
$brand: #ca3f2f;
/* SwiftUI */
Color(red: 0.792, green: 0.247, blue: 0.184)
/* UIKit */
UIColor(red: 0.792, green: 0.247, blue: 0.184, alpha: 1)
/* Android XML */
<color name="brand">#CA3F2F</color>
/* Android Compose */
Color(0xFFCA3F2F)
/* Flutter */
Color(0xFFCA3F2F)
/* Python / OpenCV (BGR) */
(47, 63, 202)
/* Python / PIL (RGB) */
(202, 63, 47)
/* Java AWT */
new Color(202, 63, 47)
/* .NET */
Color.FromArgb(255, 202, 63, 47)
/* OpenGL / Unity (0–1) */
(0.7922f, 0.2471f, 0.1843f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{202,63,47}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #ca3f2f 85%, white);
border-color: color-mix(in oklab, #ca3f2f 40%, transparent);
/* theme-aware in one line */
color: light-dark(#672018, #EED5D3);
/* relative colour syntax */
--hover: hsl(from #ca3f2f 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: #FBF4F4;
  --brand-100: #F7EAE8;
  --brand-200: #F0CFCC;
  --brand-300: #EAABA4;
  --brand-400: #DF8177;
  --brand-500: #D55749;
  --brand-600: #ca3f2f;
  --brand-700: #A53427;
  --brand-800: #84291F;
  --brand-900: #60211A;
  --brand-950: #3C1510;
  --brand: #ca3f2f;
  --brand-ink: #ffffff;
  --brand-surface: #FAF5F4;
  --brand-border: #EDC4C0;
  --brand-hover: #AD3628;
  --brand-pressed: #902D22;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #241514;
    --brand-ink: #EED5D3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FBF4F4',
        100: '#F7EAE8',
        200: '#F0CFCC',
        300: '#EAABA4',
        400: '#DF8177',
        500: '#D55749',
        600: '#ca3f2f',
        700: '#A53427',
        800: '#84291F',
        900: '#60211A',
        950: '#3C1510',
        DEFAULT: '#ca3f2f',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FBF4F4,
  '100': #F7EAE8,
  '200': #F0CFCC,
  '300': #EAABA4,
  '400': #DF8177,
  '500': #D55749,
  '600': #ca3f2f,
  '700': #A53427,
  '800': #84291F,
  '900': #60211A,
  '950': #3C1510,
);
$brand-base: #ca3f2f;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FBF4F4", "$type": "color" },
      "100": { "$value": "#F7EAE8", "$type": "color" },
      "200": { "$value": "#F0CFCC", "$type": "color" },
      "300": { "$value": "#EAABA4", "$type": "color" },
      "400": { "$value": "#DF8177", "$type": "color" },
      "500": { "$value": "#D55749", "$type": "color" },
      "600": { "$value": "#ca3f2f", "$type": "color" },
      "700": { "$value": "#A53427", "$type": "color" },
      "800": { "$value": "#84291F", "$type": "color" },
      "900": { "$value": "#60211A", "$type": "color" },
      "950": { "$value": "#3C1510", "$type": "color" }
    },
    "brandInk": { "$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 #ca3f2f · 4.93:1
Use #ffffffAA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 4.93:1 · recommended
AA pass · AA large pass · AAA fail
Aa
Black text · 4.26:1
AA fail · AA large pass · AAA fail
Reading the other direction: #ca3f2f as text scores 4.93:1 on white and 4.26:1 on black.
Best tinted ink on it, if plain black or white feels flat: #FAECEA at 4.28:1.

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
#ca3f2f · 4.93:1
AA on whitealready passes
#ca3f2f
The quick fox
#A03225 · 7.05:1
AAA on white−10% L
#A03225
The quick fox
#D04434 · 4.56:1
AA on black+2% L
#D04434
The quick fox
#DD796D · 7.03:1
AAA on black+16% L
#DD796D

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #CA3F2F 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
#ca3f2f on white: 4.93:1
AA ✓ pass · AA-large · AAA
Aa
#ca3f2f on black: 4.26:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #ca3f2f as text on that neutral, and that neutral as text on #ca3f2f.

NeutralRatioBoth directions
White4.93:1AaAa
Slate 504.71:1AaAa
Slate 1004.50:1AaAa
Slate 2004.00:1AaAa
Slate 3003.32:1AaAa
Slate 4001.92:1AaAa
Slate 5001.04:1AaAa
Slate 6001.54:1AaAa
Slate 7002.10:1AaAa
Slate 8002.97:1AaAa
Slate 9003.62:1AaAa
Black4.26:1AaAa
Colour vision deficiency
true color
protanopia · #675D2C
deuteranopia · #8A7C2A
tritanopia · #DE0D3C

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. #ca3f2f is pinned to step 600; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#FBF4F4
#F7EAE8
#F0CFCC
#EAABA4
#DF8177
#D55749
#ca3f2f
#A53427
#84291F
#60211A
#3C1510
Base = 600Lightest = 50 · #FBF4F4Darkest = 950 · #3C1510Text 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 0.045 30.1);
  --brand-100: oklch(0.94 0.071 30.1);
  --brand-200: oklch(0.88 0.107 30.1);
  --brand-300: oklch(0.80 0.139 30.1);
  --brand-400: oklch(0.72 0.164 30.1);
  --brand-500: oklch(0.64 0.178 30.1);
  --brand-600: oklch(0.56 0.178 30.1);
  --brand-700: oklch(0.48 0.168 30.1);
  --brand-800: oklch(0.40 0.150 30.1);
  --brand-900: oklch(0.32 0.125 30.1);
  --brand-950: oklch(0.24 0.098 30.1);
}

Colors that work with #ca3f2f

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#FAF5F4
Tinted page background
Border#EDC4C0
Hairlines and dividers
Muted text#9B534B
Captions on the surface
Accent#22AA96
Second voice, not a rival
Dark variant#672018
Hover, pressed, headers
Light variant#FAECEA
Selected rows, tints
Dark surface#241514
Dark-mode background
Hover#AD3628
One step down in lightness
Pressed#902D22
Two steps down
Disabled#C5A8A4
Chroma pulled out
Focus ring#DE4230
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 #ca3f2f

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
  • 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 mid lightness keeps it versatile in both themes.

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
  • FormalityMedium
  • EnergyMedium-high
  • Weight51/100
  • 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#2FBACA
Analogous left#CA2F6C
Analogous right#CA8C2F
Split-complement 1#2FCA8C
Split-complement 2#2F6CCA
Triadic 1#2FCA3F
Triadic 2#3F2FCA
Tetradic#6CCA2F
On the wheel
Base+30°−30°+120°+240°+180°6°

#ca3f2f sits at 6°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red79.2%
Green24.7%
Blue18.4%
R · 0–255
202
0xca
G · 0–255
63
0x3f
B · 0–255
47
0x2f

CMYK percentages

Cyan0.0%
Magenta68.8%
Yellow76.7%
Key (black)20.8%

Total ink coverage is 166%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#ca3f2f text on a black background

contrast 4.26:1

Card sample

#ca3f2f text on a white background

contrast 4.93:1

Card sample

#ca3f2f on grey

4.50:1

#ca3f2f on its own surface

4.56:1

#ca3f2f on its dark surface

3.58:1

CSS3 live lab

Text font color

The quick brown fox

color: #ca3f2f;
Background color
Panel with #ca3f2f background
background-color: #ca3f2f;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #ca3f2f;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(202, 63, 47, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(202, 63, 47, 0.45);
Border & gradient
Gradient panel
border: 3px solid #ca3f2f;
background: linear-gradient(135deg, #ca3f2f, #CAA62F);
Gradient text

Gradient headline

background: linear-gradient(90deg, #ca3f2f, #C7CA2F);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #ca3f2f;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #ca3f2f;
caret-color: #ca3f2f;
Left rule
Pull quote or callout
border-left: 4px solid #ca3f2f;
Ring + tint
Selected chip
background: #FAECEA;
box-shadow: inset 0 0 0 2px #ca3f2f;
Conic badge
68%
background: conic-gradient(#ca3f2f 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #ca3f2f 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(202, 63, 47, 0.5)
rgb(202 63 47 / 50%)
#ca3f2f80
hsl(6 62% 49% / 50%)
color-mix(in srgb, #ca3f2f 50%, transparent)
Alpha8-digit hexFlat on white
10%#ca3f2f1a#FAECEA
20%#ca3f2f33#F4D9D5
40%#ca3f2f66#EAB2AC
60%#ca3f2f99#DF8C82
80%#ca3f2fcc#D56559

Gradients from #ca3f2f

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, #D96A5D, #ca3f2f 45%, #672018);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #ca3f2f, #B19D29);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #ca3f2f, #2FBACA);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #DF8176 0%, #ca3f2f 45%, #672018 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #FAF5F4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #D75593 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #D3A744 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #672018 0%, transparent 65%), #ca3f2f;

Monochromatic scale

Palettes built from #ca3f2f

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.

#ca3f2f 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 4.26:1 — lift it to #D04434 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.

#ca3f2f, answered

What color is #ca3f2f?

#ca3f2f is a balanced vivid red, closest to Firebrick (ΔE2000 7.9). It sits at 6° on the hue wheel with 62% saturation and 49% lightness, which reads as warm.

What is the RGB value of #ca3f2f?

rgb(202, 63, 47) — 202 red, 63 green and 47 blue out of 255, or 79.2% / 24.7% / 18.4% by channel.

What is #ca3f2f in HSL and HSV?

hsl(6, 62%, 49%) and hsv(6, 77%, 79%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #ca3f2f a light or a dark color?

It is a dark color. Relative luminance is 0.1632 and perceived brightness is 48%, so white text on it reaches 4.93:1.

Should I use black or white text on #ca3f2f?

White. It scores 4.93:1 against #ca3f2f, versus 4.26:1 for black — AA at any size.

Is #ca3f2f accessible on a white background?

#ca3f2f on white scores 4.93:1, which clears AA at every size but not AAA.

What is the complementary color of #ca3f2f?

#2FBACA sits directly opposite on the wheel. Softer options are the split-complements #2FCA8C and #2F6CCA, which give the same contrast with far less vibration.

What colors go well with #ca3f2f?

For interface work: #FAF5F4 as the surface, #EDC4C0 for borders, #9B534B for secondary text, #22AA96 as an accent and #672018 for hover and pressed states. For a palette, the analogous pair #CA2F6C and #CA8C2F stays calm, while #2FBACA is the loudest partner.

What is #ca3f2f in CMYK for printing?

cmyk(0%, 69%, 77%, 21%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #ca3f2f warm or cool?

Warm — it scores 13 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #CA5D2F; nudged cooler, #CC2D57.

Which Tailwind color is closest to #ca3f2f?

The red family — its 500 step is #ef4444, ΔE2000 8.7 away. That is a visible difference, so define #ca3f2f as a custom token rather than reaching for the built-in.

How do I use #ca3f2f in Tailwind CSS?

Inline it as an arbitrary value with bg-[#ca3f2f] or text-[#ca3f2f], 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 #ca3f2f with 50% opacity?

rgba(202, 63, 47, 0.5), or #ca3f2f80 in eight-digit hex. Over white that composites to #E59F97; over black, #652018.

Is #ca3f2f a web-safe color?

No. The nearest web-safe colour is #CC3333, ΔE2000 3.4 away. The palette only matters for legacy displays and some email clients now.

What does the color #ca3f2f 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 #ca3f2f?

The safest is same-hue elevation: linear-gradient(135deg, #D96A5D, #ca3f2f 45%, #672018). For more colour, a short hue run to #B19D29 keeps it rich without turning muddy.

Work with #ca3f2f in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #ca3f2f at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.