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red · warm

#f71513

a balanced, electric red · warm · closest name: Red

Token name suggestion: Atlas Cardinal

RGB
247, 21, 19
HSL
1°, 93%, 52%
CMYK
0, 92, 92, 3
Luminance
0.2036

#f71513 is a balanced electric red, 1° on the wheel and 16/100 on the cool side. Put black text on it (5.07:1). As text it scores 4.14:1 on white — large text only. Nearest name is Red, nearest Tailwind family is red.

hsl(1 93% 52%)rgb(247 21 19)Base step 500AA inkWarm

At a glance

Every number on this page in one read: what #f71513 is made of, how bright it looks, and which way it leans.

Hex
#f71513
Hue
red
Saturation
93%
electric
Lightness
52%
balanced
Brightness
97%
HSV value
Perceived
53%
weighted brightness
Luminance
0.2036
WCAG relative
Temperature
Warm
16/100 cool
Color family
Red
Tone
Electric
Best ink
Black
5.07:1
Closest name
Red
ΔE2000 2
Chroma
97.8
LCH, 0–130ish
OKLCH L
0.618
perceptual lightness
Tailwind
red
500 · ΔE 7.6
Web-safe
#FF0000
nearest of 216
Where it sits
Hue1° of 360°
Saturation93%
Lightness52%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #f71513.

Temperature
Warm ← → Cool16% 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
Red97%
Green3%
Blue0%

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

Every format

HEX#f71513
HEX (8-digit)#f71513ff
RGBrgb(247, 21, 19)
RGBArgba(247, 21, 19, 1)
HSLhsl(1, 93%, 52%)
HSV / HSBhsv(1, 92%, 97%)
HWBhwb(1 7% 3%)
CMYKcmyk(0%, 92%, 92%, 3%)
LABlab(52.3 76.6 60.8)
LCHlch(52.3 97.8 38.4)
OKLCHoklch(0.618 0.246 28.8)
XYZ (D65)xyz(38.75, 20.36, 2.51)
Decimal16192787
Display P3color(display-p3 0.969 0.082 0.075)
Web-safe#FF0000

Copy-ready code

every platformclick to select
/* CSS */
color: #f71513;
background-color: #f71513;
/* CSS custom property */
--brand: #f71513;
/* Tailwind (arbitrary) */
class="text-[#f71513] bg-[#f71513]"
/* SCSS */
$brand: #f71513;
/* SwiftUI */
Color(red: 0.969, green: 0.082, blue: 0.075)
/* UIKit */
UIColor(red: 0.969, green: 0.082, blue: 0.075, alpha: 1)
/* Android XML */
<color name="brand">#F71513</color>
/* Android Compose */
Color(0xFFF71513)
/* Flutter */
Color(0xFFF71513)
/* Python / OpenCV (BGR) */
(19, 21, 247)
/* Python / PIL (RGB) */
(247, 21, 19)
/* Java AWT */
new Color(247, 21, 19)
/* .NET */
Color.FromArgb(255, 247, 21, 19)
/* OpenGL / Unity (0–1) */
(0.9686f, 0.0824f, 0.0745f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{247,21,19}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #f71513 85%, white);
border-color: color-mix(in oklab, #f71513 40%, transparent);
/* theme-aware in one line */
color: light-dark(#7B0504, #EED3D3);
/* relative colour syntax */
--hover: hsl(from #f71513 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: #FDF2F2;
  --brand-100: #FBE4E4;
  --brand-200: #F9C3C2;
  --brand-300: #FB9393;
  --brand-400: #F95E5C;
  --brand-500: #f71513;
  --brand-600: #ED0A08;
  --brand-700: #C50807;
  --brand-800: #9E0705;
  --brand-900: #720909;
  --brand-950: #470605;
  --brand: #f71513;
  --brand-ink: #000000;
  --brand-surface: #FAF4F4;
  --brand-border: #EDC0C0;
  --brand-hover: #DF0908;
  --brand-pressed: #BC0806;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #241414;
    --brand-ink: #EED3D3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FDF2F2',
        100: '#FBE4E4',
        200: '#F9C3C2',
        300: '#FB9393',
        400: '#F95E5C',
        500: '#f71513',
        600: '#ED0A08',
        700: '#C50807',
        800: '#9E0705',
        900: '#720909',
        950: '#470605',
        DEFAULT: '#f71513',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FDF2F2,
  '100': #FBE4E4,
  '200': #F9C3C2,
  '300': #FB9393,
  '400': #F95E5C,
  '500': #f71513,
  '600': #ED0A08,
  '700': #C50807,
  '800': #9E0705,
  '900': #720909,
  '950': #470605,
);
$brand-base: #f71513;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FDF2F2", "$type": "color" },
      "100": { "$value": "#FBE4E4", "$type": "color" },
      "200": { "$value": "#F9C3C2", "$type": "color" },
      "300": { "$value": "#FB9393", "$type": "color" },
      "400": { "$value": "#F95E5C", "$type": "color" },
      "500": { "$value": "#f71513", "$type": "color" },
      "600": { "$value": "#ED0A08", "$type": "color" },
      "700": { "$value": "#C50807", "$type": "color" },
      "800": { "$value": "#9E0705", "$type": "color" },
      "900": { "$value": "#720909", "$type": "color" },
      "950": { "$value": "#470605", "$type": "color" }
    },
    "brandInk": { "$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 #f71513 · 5.07:1
Use #000000AA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 4.14:1
AA fail · AA large pass · AAA fail
Aa
Black text · 5.07:1 · recommended
AA pass · AA large pass · AAA fail
Reading the other direction: #f71513 as text scores 4.14:1 on white and 5.07:1 on black.
Best tinted ink on it, if plain black or white feels flat: #7B0504 at 2.72:1.

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
#E90A08 · 4.65:1
AA on white−5% L
#E90A08
The quick fox
#B30806 · 7.11:1
AAA on white−16% L
#B30806
The quick fox
#f71513 · 5.07:1
AA on blackalready passes
#f71513
The quick fox
#FA6362 · 7.03:1
AAA on black+16% L
#FA6362

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #F71513 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
#f71513 on white: 4.14:1
AA ✗ fail · AA-large · AAA
Aa
#f71513 on black: 5.07:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #f71513 as text on that neutral, and that neutral as text on #f71513.

NeutralRatioBoth directions
White4.14:1AaAa
Slate 503.96:1AaAa
Slate 1003.78:1AaAa
Slate 2003.36:1AaAa
Slate 3002.79:1AaAa
Slate 4001.61:1AaAa
Slate 5001.15:1AaAa
Slate 6001.83:1AaAa
Slate 7002.50:1AaAa
Slate 8003.53:1AaAa
Slate 9004.31:1AaAa
Black5.07:1AaAa
Colour vision deficiency
true color
protanopia · #6B5E09
deuteranopia · #9F8D00
tritanopia · #FF001C

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. #f71513 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.

#FDF2F2
#FBE4E4
#F9C3C2
#FB9393
#F95E5C
#f71513
#ED0A08
#C50807
#9E0705
#720909
#470605
Base = 500Lightest = 50 · #FDF2F2Darkest = 950 · #470605Text 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 0.062 28.8);
  --brand-100: oklch(0.94 0.099 28.8);
  --brand-200: oklch(0.88 0.148 28.8);
  --brand-300: oklch(0.80 0.192 28.8);
  --brand-400: oklch(0.72 0.227 28.8);
  --brand-500: oklch(0.64 0.246 28.8);
  --brand-600: oklch(0.56 0.246 28.8);
  --brand-700: oklch(0.48 0.232 28.8);
  --brand-800: oklch(0.40 0.207 28.8);
  --brand-900: oklch(0.32 0.173 28.8);
  --brand-950: oklch(0.24 0.136 28.8);
}

Colors that work with #f71513

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#FAF4F4
Tinted page background
Border#EDC0C0
Hairlines and dividers
Muted text#9B4B4B
Captions on the surface
Accent#03C999
Second voice, not a rival
Dark variant#7B0504
Hover, pressed, headers
Light variant#FEE7E6
Selected rows, tints
Dark surface#241414
Dark-mode background
Hover#DF0908
One step down in lightness
Pressed#BC0806
Two steps down
Disabled#CCAFAF
Chroma pulled out
Focus ring#FF2120
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 #f71513

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
  • Brand accents, badges and data highlights
  • Chart series and data categories
Use with care
  • Small text on white — under 4.5:1
  • 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
24px / 18.66px bold
Safe as a fill behind white type
No — use #7B0504
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.

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

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight48/100
  • 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#13F5F7
Analogous left#F71383
Analogous right#F78713
Split-complement 1#13F787
Split-complement 2#1383F7
Triadic 1#13F715
Triadic 2#1513F7
Tetradic#83F713
On the wheel
Base+30°−30°+120°+240°+180°1°

#f71513 sits at 1°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red96.9%
Green8.2%
Blue7.5%
R · 0–255
247
0xf7
G · 0–255
21
0x15
B · 0–255
19
0x13

CMYK percentages

Cyan0.0%
Magenta91.5%
Yellow92.3%
Key (black)3.1%

Total ink coverage is 187%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#f71513 text on a black background

contrast 5.07:1

Card sample

#f71513 text on a white background

contrast 4.14:1

Card sample

#f71513 on grey

3.78:1

#f71513 on its own surface

3.81:1

#f71513 on its dark surface

4.28:1

CSS3 live lab

Text font color

The quick brown fox

color: #f71513;
Background color
Panel with #f71513 background
background-color: #f71513;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #f71513;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(247, 21, 19, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(247, 21, 19, 0.45);
Border & gradient
Gradient panel
border: 3px solid #f71513;
background: linear-gradient(135deg, #f71513, #F7AD13);
Gradient text

Gradient headline

background: linear-gradient(90deg, #f71513, #F7E613);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #f71513;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #f71513;
caret-color: #f71513;
Left rule
Pull quote or callout
border-left: 4px solid #f71513;
Ring + tint
Selected chip
background: #FEE7E6;
box-shadow: inset 0 0 0 2px #f71513;
Conic badge
68%
background: conic-gradient(#f71513 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #f71513 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(247, 21, 19, 0.5)
rgb(247 21 19 / 50%)
#f7151380
hsl(1 93% 52% / 50%)
color-mix(in srgb, #f71513 50%, transparent)
Alpha8-digit hexFlat on white
10%#f715131a#FEE8E7
20%#f7151333#FDD0D0
40%#f7151366#FCA1A1
60%#f7151399#FA7371
80%#f71513cc#F94442

Gradients from #f71513

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, #F9504E, #f71513 45%, #7B0504);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #f71513, #E4AF08);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #f71513, #13F5F7);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #FA6D6C 0%, #f71513 45%, #7B0504 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #FAF4F4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #F945AC 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #F8A731 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #7B0504 0%, transparent 65%), #f71513;

Monochromatic scale

Palettes built from #f71513

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.

#f71513 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

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

Usable as-is on a dark surface at 5.07:1.

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.

#f71513, answered

What color is #f71513?

#f71513 is a balanced electric red, closest to Red (ΔE2000 2). It sits at 1° on the hue wheel with 93% saturation and 52% lightness, which reads as warm.

What is the RGB value of #f71513?

rgb(247, 21, 19) — 247 red, 21 green and 19 blue out of 255, or 96.9% / 8.2% / 7.5% by channel.

What is #f71513 in HSL and HSV?

hsl(1, 93%, 52%) and hsv(1, 92%, 97%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #f71513 a light or a dark color?

It is a mid-tone. Relative luminance is 0.2036 and perceived brightness is 53%, so black text on it reaches 5.07:1.

Should I use black or white text on #f71513?

Black. It scores 5.07:1 against #f71513, versus 4.14:1 for white — AA at any size.

Is #f71513 accessible on a white background?

#f71513 on white scores 4.14:1, which only clears AA for large text — 18.66px bold or 24px regular and up. Darken it to #E90A08 to reach 4.5:1, or #B30806 for 7:1.

What is the complementary color of #f71513?

#13F5F7 sits directly opposite on the wheel. Softer options are the split-complements #13F787 and #1383F7, which give the same contrast with far less vibration.

What colors go well with #f71513?

For interface work: #FAF4F4 as the surface, #EDC0C0 for borders, #9B4B4B for secondary text, #03C999 as an accent and #7B0504 for hover and pressed states. For a palette, the analogous pair #F71383 and #F78713 stays calm, while #13F5F7 is the loudest partner.

What is #f71513 in CMYK for printing?

cmyk(0%, 92%, 92%, 3%). 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 #f71513 warm or cool?

Warm — it scores 16 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #F74513; nudged cooler, #F91164.

Which Tailwind color is closest to #f71513?

The red family — its 500 step is #ef4444, ΔE2000 7.6 away. That is a visible difference, so define #f71513 as a custom token rather than reaching for the built-in.

How do I use #f71513 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#f71513] or text-[#f71513], 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 #f71513 with 50% opacity?

rgba(247, 21, 19, 0.5), or #f7151380 in eight-digit hex. Over white that composites to #FB8A89; over black, #7C0B0A.

Is #f71513 a web-safe color?

No. The nearest web-safe colour is #FF0000, ΔE2000 2 away. The palette only matters for legacy displays and some email clients now.

What does the color #f71513 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 #f71513?

The safest is same-hue elevation: linear-gradient(135deg, #F9504E, #f71513 45%, #7B0504). For more colour, a short hue run to #E4AF08 keeps it rich without turning muddy.

Work with #f71513 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #f71513 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.