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red · warm

#fd1217

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

Token name suggestion: Atlas Rust

RGB
253, 18, 23
HSL
359°, 98%, 53%
CMYK
0, 93, 91, 1
Luminance
0.2138

#fd1217 is a balanced electric red, 359° on the wheel and 17/100 on the cool side. Put black text on it (5.28:1). As text it scores 3.98:1 on white — large text only. Nearest name is Red, nearest Tailwind family is red.

hsl(359 98% 53%)rgb(253 18 23)Base step 500AA inkWarm

At a glance

Every number on this page in one read: what #fd1217 is made of, how bright it looks, and which way it leans.

Hex
#fd1217
Hue
359°
red
Saturation
98%
electric
Lightness
53%
balanced
Brightness
99%
HSV value
Perceived
55%
weighted brightness
Luminance
0.2138
WCAG relative
Temperature
Warm
17/100 cool
Color family
Red
Tone
Electric
Best ink
Black
5.28:1
Closest name
Red
ΔE2000 2.2
Chroma
99.2
LCH, 0–130ish
OKLCH L
0.628
perceptual lightness
Tailwind
red
500 · ΔE 7.1
Web-safe
#FF0000
nearest of 216
Where it sits
Hue359° of 360°
Saturation98%
Lightness53%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #fd1217.

Temperature
Warm ← → Cool17% 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
Red98%
Green2%
Blue0%

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

Every format

HEX#fd1217
HEX (8-digit)#fd1217ff
RGBrgb(253, 18, 23)
RGBArgba(253, 18, 23, 1)
HSLhsl(359, 98%, 53%)
HSV / HSBhsv(359, 93%, 99%)
HWBhwb(359 7% 1%)
CMYKcmyk(0%, 93%, 91%, 1%)
LABlab(53.4 78.4 60.7)
LCHlch(53.4 99.2 37.7)
OKLCHoklch(0.628 0.252 28.3)
XYZ (D65)xyz(40.88, 21.38, 2.79)
Decimal16585239
Display P3color(display-p3 0.992 0.071 0.090)
Web-safe#FF0000

Copy-ready code

every platformclick to select
/* CSS */
color: #fd1217;
background-color: #fd1217;
/* CSS custom property */
--brand: #fd1217;
/* Tailwind (arbitrary) */
class="text-[#fd1217] bg-[#fd1217]"
/* SCSS */
$brand: #fd1217;
/* SwiftUI */
Color(red: 0.992, green: 0.071, blue: 0.090)
/* UIKit */
UIColor(red: 0.992, green: 0.071, blue: 0.090, alpha: 1)
/* Android XML */
<color name="brand">#FD1217</color>
/* Android Compose */
Color(0xFFFD1217)
/* Flutter */
Color(0xFFFD1217)
/* Python / OpenCV (BGR) */
(23, 18, 253)
/* Python / PIL (RGB) */
(253, 18, 23)
/* Java AWT */
new Color(253, 18, 23)
/* .NET */
Color.FromArgb(255, 253, 18, 23)
/* OpenGL / Unity (0–1) */
(0.9922f, 0.0706f, 0.0902f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{253,18,23}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #fd1217 85%, white);
border-color: color-mix(in oklab, #fd1217 40%, transparent);
/* theme-aware in one line */
color: light-dark(#7E0104, #EED3D3);
/* relative colour syntax */
--hover: hsl(from #fd1217 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: #FDF1F1;
  --brand-100: #FCE3E4;
  --brand-200: #FBC1C2;
  --brand-300: #FE9092;
  --brand-400: #FE585C;
  --brand-500: #fd1217;
  --brand-600: #F30207;
  --brand-700: #CA0206;
  --brand-800: #A20105;
  --brand-900: #750608;
  --brand-950: #490405;
  --brand: #fd1217;
  --brand-ink: #000000;
  --brand-surface: #FAF4F4;
  --brand-border: #EDC0C1;
  --brand-hover: #E90207;
  --brand-pressed: #C60206;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #241414;
    --brand-ink: #EED3D3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FDF1F1',
        100: '#FCE3E4',
        200: '#FBC1C2',
        300: '#FE9092',
        400: '#FE585C',
        500: '#fd1217',
        600: '#F30207',
        700: '#CA0206',
        800: '#A20105',
        900: '#750608',
        950: '#490405',
        DEFAULT: '#fd1217',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FDF1F1,
  '100': #FCE3E4,
  '200': #FBC1C2,
  '300': #FE9092,
  '400': #FE585C,
  '500': #fd1217,
  '600': #F30207,
  '700': #CA0206,
  '800': #A20105,
  '900': #750608,
  '950': #490405,
);
$brand-base: #fd1217;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FDF1F1", "$type": "color" },
      "100": { "$value": "#FCE3E4", "$type": "color" },
      "200": { "$value": "#FBC1C2", "$type": "color" },
      "300": { "$value": "#FE9092", "$type": "color" },
      "400": { "$value": "#FE585C", "$type": "color" },
      "500": { "$value": "#fd1217", "$type": "color" },
      "600": { "$value": "#F30207", "$type": "color" },
      "700": { "$value": "#CA0206", "$type": "color" },
      "800": { "$value": "#A20105", "$type": "color" },
      "900": { "$value": "#750608", "$type": "color" },
      "950": { "$value": "#490405", "$type": "color" }
    },
    "brandInk": { "$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 #fd1217 · 5.28:1
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 · 5.28:1 · recommended
AA pass · AA large pass · AAA fail
Reading the other direction: #fd1217 as text scores 3.98:1 on white and 5.28:1 on black.
Best tinted ink on it, if plain black or white feels flat: #7E0104 at 2.79:1.

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
#EE0207 · 4.52:1
AA on white−6% L
#EE0207
The quick fox
#B10205 · 7.29:1
AAA on white−18% L
#B10205
The quick fox
#fd1217 · 5.28:1
AA on blackalready passes
#fd1217
The quick fox
#FE6366 · 7.19:1
AAA on black+16% L
#FE6366

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #FD1217 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
#fd1217 on white: 3.98:1
AA ✗ fail · AA-large · AAA
Aa
#fd1217 on black: 5.28:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #fd1217 as text on that neutral, and that neutral as text on #fd1217.

NeutralRatioBoth directions
White3.98:1AaAa
Slate 503.80:1AaAa
Slate 1003.63:1AaAa
Slate 2003.23:1AaAa
Slate 3002.68:1AaAa
Slate 4001.55:1AaAa
Slate 5001.20:1AaAa
Slate 6001.90:1AaAa
Slate 7002.60:1AaAa
Slate 8003.67:1AaAa
Slate 9004.48:1AaAa
Black5.28:1AaAa
Colour vision deficiency
true color
protanopia · #6D600F
deuteranopia · #A39000
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. #fd1217 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.

#FDF1F1
#FCE3E4
#FBC1C2
#FE9092
#FE585C
#fd1217
#F30207
#CA0206
#A20105
#750608
#490405
Base = 500Lightest = 50 · #FDF1F1Darkest = 950 · #490405Text step on white = 700
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 0.063 28.3);
  --brand-100: oklch(0.94 0.101 28.3);
  --brand-200: oklch(0.88 0.151 28.3);
  --brand-300: oklch(0.80 0.196 28.3);
  --brand-400: oklch(0.72 0.232 28.3);
  --brand-500: oklch(0.64 0.252 28.3);
  --brand-600: oklch(0.56 0.252 28.3);
  --brand-700: oklch(0.48 0.237 28.3);
  --brand-800: oklch(0.40 0.212 28.3);
  --brand-900: oklch(0.32 0.176 28.3);
  --brand-950: oklch(0.24 0.138 28.3);
}

Colors that work with #fd1217

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#EDC0C1
Hairlines and dividers
Muted text#9B4B4C
Captions on the surface
Accent#00CC95
Second voice, not a rival
Dark variant#7E0104
Hover, pressed, headers
Light variant#FFE6E6
Selected rows, tints
Dark surface#241414
Dark-mode background
Hover#E90207
One step down in lightness
Pressed#C60206
Two steps down
Disabled#CDB2B2
Chroma pulled out
Focus ring#FF2429
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 #fd1217

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 #7E0104
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
  • Weight47/100
  • 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#12FDF8
Analogous left#FD128C
Analogous right#FD8212
Split-complement 1#12FD82
Split-complement 2#128CFD
Triadic 1#17FD12
Triadic 2#1217FD
Tetradic#8CFD12
On the wheel
Base+30°−30°+120°+240°+180°359°

#fd1217 sits at 359°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red99.2%
Green7.1%
Blue9.0%
R · 0–255
253
0xfd
G · 0–255
18
0x12
B · 0–255
23
0x17

CMYK percentages

Cyan0.0%
Magenta92.9%
Yellow90.9%
Key (black)0.8%

Total ink coverage is 185%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#fd1217 text on a black background

contrast 5.28:1

Card sample

#fd1217 text on a white background

contrast 3.98:1

Card sample

#fd1217 on grey

3.63:1

#fd1217 on its own surface

3.66:1

#fd1217 on its dark surface

4.45:1

CSS3 live lab

Text font color

The quick brown fox

color: #fd1217;
Background color
Panel with #fd1217 background
background-color: #fd1217;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #fd1217;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(253, 18, 23, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(253, 18, 23, 0.45);
Border & gradient
Gradient panel
border: 3px solid #fd1217;
background: linear-gradient(135deg, #fd1217, #FDA912);
Gradient text

Gradient headline

background: linear-gradient(90deg, #fd1217, #FDE412);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #fd1217;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #fd1217;
caret-color: #fd1217;
Left rule
Pull quote or callout
border-left: 4px solid #fd1217;
Ring + tint
Selected chip
background: #FFE6E6;
box-shadow: inset 0 0 0 2px #fd1217;
Conic badge
68%
background: conic-gradient(#fd1217 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #fd1217 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(253, 18, 23, 0.5)
rgb(253 18 23 / 50%)
#fd121780
hsl(359 98% 53% / 50%)
color-mix(in srgb, #fd1217 50%, transparent)
Alpha8-digit hexFlat on white
10%#fd12171a#FFE7E8
20%#fd121733#FFD0D1
40%#fd121766#FEA0A2
60%#fd121799#FE7174
80%#fd1217cc#FD4145

Gradients from #fd1217

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, #FD4F52, #fd1217 45%, #7E0104);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #fd1217, #EEAE02);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #fd1217, #12FDF8);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #FE6D70 0%, #fd1217 45%, #7E0104 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%, #FD44B4 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #FDA330 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #7E0104 0%, transparent 65%), #fd1217;

Monochromatic scale

Palettes built from #fd1217

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.

#fd1217 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 5.28:1.

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.

#fd1217, answered

What color is #fd1217?

#fd1217 is a balanced electric red, closest to Red (ΔE2000 2.2). It sits at 359° on the hue wheel with 98% saturation and 53% lightness, which reads as warm.

What is the RGB value of #fd1217?

rgb(253, 18, 23) — 253 red, 18 green and 23 blue out of 255, or 99.2% / 7.1% / 9% by channel.

What is #fd1217 in HSL and HSV?

hsl(359, 98%, 53%) and hsv(359, 93%, 99%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #fd1217 a light or a dark color?

It is a mid-tone. Relative luminance is 0.2138 and perceived brightness is 55%, so black text on it reaches 5.28:1.

Should I use black or white text on #fd1217?

Black. It scores 5.28:1 against #fd1217, versus 3.98:1 for white — AA at any size.

Is #fd1217 accessible on a white background?

#fd1217 on white scores 3.98:1, which only clears AA for large text — 18.66px bold or 24px regular and up. Darken it to #EE0207 to reach 4.5:1, or #B10205 for 7:1.

What is the complementary color of #fd1217?

#12FDF8 sits directly opposite on the wheel. Softer options are the split-complements #12FD82 and #128CFD, which give the same contrast with far less vibration.

What colors go well with #fd1217?

For interface work: #FAF4F4 as the surface, #EDC0C1 for borders, #9B4B4C for secondary text, #00CC95 as an accent and #7E0104 for hover and pressed states. For a palette, the analogous pair #FD128C and #FD8212 stays calm, while #12FDF8 is the loudest partner.

What is #fd1217 in CMYK for printing?

cmyk(0%, 93%, 91%, 1%). 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 #fd1217 warm or cool?

Warm — it scores 17 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #FD4112; nudged cooler, #FF106D.

Which Tailwind color is closest to #fd1217?

The red family — its 500 step is #ef4444, ΔE2000 7.1 away. That is a visible difference, so define #fd1217 as a custom token rather than reaching for the built-in.

How do I use #fd1217 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#fd1217] or text-[#fd1217], 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 #fd1217 with 50% opacity?

rgba(253, 18, 23, 0.5), or #fd121780 in eight-digit hex. Over white that composites to #FE898B; over black, #7F090C.

Is #fd1217 a web-safe color?

No. The nearest web-safe colour is #FF0000, ΔE2000 2.2 away. The palette only matters for legacy displays and some email clients now.

What does the color #fd1217 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 #fd1217?

The safest is same-hue elevation: linear-gradient(135deg, #FD4F52, #fd1217 45%, #7E0104). For more colour, a short hue run to #EEAE02 keeps it rich without turning muddy.

Work with #fd1217 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #fd1217 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.