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red · warm

#e1663e

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

Token name suggestion: Signal Rust

RGB
225, 102, 62
HSL
15°, 73%, 56%
CMYK
0, 55, 72, 12
Luminance
0.2586

#e1663e is a balanced vivid red, 15° on the wheel and 9/100 on the cool side. Put black text on it (6.17:1). As text it scores 3.40:1 on white — large text only. Nearest name is Tomato, nearest Tailwind family is red.

hsl(15 73% 56%)rgb(225 102 62)Base step 500AA inkWarm

At a glance

Every number on this page in one read: what #e1663e is made of, how bright it looks, and which way it leans.

Hex
#e1663e
Hue
15°
red
Saturation
73%
vivid
Lightness
56%
balanced
Brightness
88%
HSV value
Perceived
58%
weighted brightness
Luminance
0.2586
WCAG relative
Temperature
Warm
9/100 cool
Color family
Red
Tone
Vivid
Best ink
Black
6.17:1
Closest name
Tomato
ΔE2000 6.2
Chroma
64.0
LCH, 0–130ish
OKLCH L
0.654
perceptual lightness
Tailwind
red
500 · ΔE 10.1
Web-safe
#CC6633
nearest of 216
Where it sits
Hue15° of 360°
Saturation73%
Lightness56%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #e1663e.

Temperature
Warm ← → Cool9% 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%
Green37%
Blue1%

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

Every format

HEX#e1663e
HEX (8-digit)#e1663eff
RGBrgb(225, 102, 62)
RGBArgba(225, 102, 62, 1)
HSLhsl(15, 73%, 56%)
HSV / HSBhsv(15, 72%, 88%)
HWBhwb(15 24% 12%)
CMYKcmyk(0%, 55%, 72%, 12%)
LABlab(57.9 45.5 45.0)
LCHlch(57.9 64.0 44.7)
OKLCHoklch(0.654 0.163 38.3)
XYZ (D65)xyz(36.68, 25.86, 7.62)
Decimal14771774
Display P3color(display-p3 0.882 0.400 0.243)
Web-safe#CC6633

Copy-ready code

every platformclick to select
/* CSS */
color: #e1663e;
background-color: #e1663e;
/* CSS custom property */
--brand: #e1663e;
/* Tailwind (arbitrary) */
class="text-[#e1663e] bg-[#e1663e]"
/* SCSS */
$brand: #e1663e;
/* SwiftUI */
Color(red: 0.882, green: 0.400, blue: 0.243)
/* UIKit */
UIColor(red: 0.882, green: 0.400, blue: 0.243, alpha: 1)
/* Android XML */
<color name="brand">#E1663E</color>
/* Android Compose */
Color(0xFFE1663E)
/* Flutter */
Color(0xFFE1663E)
/* Python / OpenCV (BGR) */
(62, 102, 225)
/* Python / PIL (RGB) */
(225, 102, 62)
/* Java AWT */
new Color(225, 102, 62)
/* .NET */
Color.FromArgb(255, 225, 102, 62)
/* OpenGL / Unity (0–1) */
(0.8824f, 0.4000f, 0.2431f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{225,102,62}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #e1663e 85%, white);
border-color: color-mix(in oklab, #e1663e 40%, transparent);
/* theme-aware in one line */
color: light-dark(#6E2811, #EED9D3);
/* relative colour syntax */
--hover: hsl(from #e1663e 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: #FCF5F3;
  --brand-100: #F8EBE7;
  --brand-200: #F3D3C9;
  --brand-300: #F0B29E;
  --brand-400: #E88B6D;
  --brand-500: #e1663e;
  --brand-600: #D44D21;
  --brand-700: #B1401B;
  --brand-800: #8D3316;
  --brand-900: #662814;
  --brand-950: #40190D;
  --brand: #e1663e;
  --brand-ink: #000000;
  --brand-surface: #FAF6F4;
  --brand-border: #EDCBC0;
  --brand-hover: #DA4F22;
  --brand-pressed: #BB441D;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #241814;
    --brand-ink: #EED9D3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FCF5F3',
        100: '#F8EBE7',
        200: '#F3D3C9',
        300: '#F0B29E',
        400: '#E88B6D',
        500: '#e1663e',
        600: '#D44D21',
        700: '#B1401B',
        800: '#8D3316',
        900: '#662814',
        950: '#40190D',
        DEFAULT: '#e1663e',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FCF5F3,
  '100': #F8EBE7,
  '200': #F3D3C9,
  '300': #F0B29E,
  '400': #E88B6D,
  '500': #e1663e,
  '600': #D44D21,
  '700': #B1401B,
  '800': #8D3316,
  '900': #662814,
  '950': #40190D,
);
$brand-base: #e1663e;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FCF5F3", "$type": "color" },
      "100": { "$value": "#F8EBE7", "$type": "color" },
      "200": { "$value": "#F3D3C9", "$type": "color" },
      "300": { "$value": "#F0B29E", "$type": "color" },
      "400": { "$value": "#E88B6D", "$type": "color" },
      "500": { "$value": "#e1663e", "$type": "color" },
      "600": { "$value": "#D44D21", "$type": "color" },
      "700": { "$value": "#B1401B", "$type": "color" },
      "800": { "$value": "#8D3316", "$type": "color" },
      "900": { "$value": "#662814", "$type": "color" },
      "950": { "$value": "#40190D", "$type": "color" }
    },
    "brandInk": { "$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 #e1663e · 6.17:1
Use #000000AA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 3.40:1
AA fail · AA large pass · AAA fail
Aa
Black text · 6.17:1 · recommended
AA pass · AA large pass · AAA fail
Reading the other direction: #e1663e as text scores 3.40:1 on white and 6.17:1 on black.
Best tinted ink on it, if plain black or white feels flat: #6E2811 at 3.13:1.

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
#CC4A20 · 4.60:1
AA on white−10% L
#CC4A20
The quick fox
#9C3818 · 7.02:1
AAA on white−21% L
#9C3818
The quick fox
#e1663e · 6.17:1
AA on blackalready passes
#e1663e
The quick fox
#E47854 · 7.11:1
AAA on black+5% L
#E47854

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #E1663E 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
#e1663e on white: 3.40:1
AA ✗ fail · AA-large · AAA
Aa
#e1663e on black: 6.17:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #e1663e as text on that neutral, and that neutral as text on #e1663e.

NeutralRatioBoth directions
White3.40:1AaAa
Slate 503.25:1AaAa
Slate 1003.11:1AaAa
Slate 2002.76:1AaAa
Slate 3002.29:1AaAa
Slate 4001.33:1AaAa
Slate 5001.40:1AaAa
Slate 6002.23:1AaAa
Slate 7003.04:1AaAa
Slate 8004.30:1AaAa
Slate 9005.25:1AaAa
Black6.17:1AaAa
Colour vision deficiency
true color
protanopia · #887A39
deuteranopia · #A6953B
tritanopia · #F74C5D

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. #e1663e 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.

#FCF5F3
#F8EBE7
#F3D3C9
#F0B29E
#E88B6D
#e1663e
#D44D21
#B1401B
#8D3316
#662814
#40190D
Base = 500Lightest = 50 · #FCF5F3Darkest = 950 · #40190DText 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 0.041 38.3);
  --brand-100: oklch(0.94 0.065 38.3);
  --brand-200: oklch(0.88 0.098 38.3);
  --brand-300: oklch(0.80 0.127 38.3);
  --brand-400: oklch(0.72 0.150 38.3);
  --brand-500: oklch(0.64 0.163 38.3);
  --brand-600: oklch(0.56 0.163 38.3);
  --brand-700: oklch(0.48 0.154 38.3);
  --brand-800: oklch(0.40 0.137 38.3);
  --brand-900: oklch(0.32 0.114 38.3);
  --brand-950: oklch(0.24 0.090 38.3);
}

Colors that work with #e1663e

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#FAF6F4
Tinted page background
Border#EDCBC0
Hairlines and dividers
Muted text#9B5E4B
Captions on the surface
Accent#18B4B4
Second voice, not a rival
Dark variant#6E2811
Hover, pressed, headers
Light variant#FCEDE9
Selected rows, tints
Dark surface#241814
Dark-mode background
Hover#DA4F22
One step down in lightness
Pressed#BB441D
Two steps down
Disabled#D4C1BB
Chroma pulled out
Focus ring#EE6F46
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 #e1663e

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 #6E2811
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
  • Weight44/100
  • 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#3EB9E1
Analogous left#E13E68
Analogous right#E1B73E
Split-complement 1#3EE1B7
Split-complement 2#3E68E1
Triadic 1#3EE166
Triadic 2#663EE1
Tetradic#68E13E
On the wheel
Base+30°−30°+120°+240°+180°15°

#e1663e sits at 15°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red88.2%
Green40.0%
Blue24.3%
R · 0–255
225
0xe1
G · 0–255
102
0x66
B · 0–255
62
0x3e

CMYK percentages

Cyan0.0%
Magenta54.7%
Yellow72.4%
Key (black)11.8%

Total ink coverage is 139%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#e1663e text on a black background

contrast 6.17:1

Card sample

#e1663e text on a white background

contrast 3.40:1

Card sample

#e1663e on grey

3.11:1

#e1663e on its own surface

3.17:1

#e1663e on its dark surface

5.08:1

CSS3 live lab

Text font color

The quick brown fox

color: #e1663e;
Background color
Panel with #e1663e background
background-color: #e1663e;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #e1663e;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(225, 102, 62, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(225, 102, 62, 0.45);
Border & gradient
Gradient panel
border: 3px solid #e1663e;
background: linear-gradient(135deg, #e1663e, #E1D33E);
Gradient text

Gradient headline

background: linear-gradient(90deg, #e1663e, #C7E13E);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #e1663e;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #e1663e;
caret-color: #e1663e;
Left rule
Pull quote or callout
border-left: 4px solid #e1663e;
Ring + tint
Selected chip
background: #FCEDE9;
box-shadow: inset 0 0 0 2px #e1663e;
Conic badge
68%
background: conic-gradient(#e1663e 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #e1663e 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(225, 102, 62, 0.5)
rgb(225 102 62 / 50%)
#e1663e80
hsl(15 73% 56% / 50%)
color-mix(in srgb, #e1663e 50%, transparent)
Alpha8-digit hexFlat on white
10%#e1663e1a#FCF0EC
20%#e1663e33#F9E0D8
40%#e1663e66#F3C2B2
60%#e1663e99#EDA38B
80%#e1663ecc#E78565

Gradients from #e1663e

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, #E99073, #e1663e 45%, #6E2811);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #e1663e, #DDDC24);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #e1663e, #3EB9E1);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #EDA58E 0%, #e1663e 45%, #6E2811 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%, #E86A95 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #E5CD59 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #6E2811 0%, transparent 65%), #e1663e;

Monochromatic scale

Palettes built from #e1663e

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.

#e1663e 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

Usable as-is on a dark surface at 6.17:1.

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.

#e1663e, answered

What color is #e1663e?

#e1663e is a balanced vivid red, closest to Tomato (ΔE2000 6.2). It sits at 15° on the hue wheel with 73% saturation and 56% lightness, which reads as warm.

What is the RGB value of #e1663e?

rgb(225, 102, 62) — 225 red, 102 green and 62 blue out of 255, or 88.2% / 40% / 24.3% by channel.

What is #e1663e in HSL and HSV?

hsl(15, 73%, 56%) and hsv(15, 72%, 88%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #e1663e a light or a dark color?

It is a mid-tone. Relative luminance is 0.2586 and perceived brightness is 58%, so black text on it reaches 6.17:1.

Should I use black or white text on #e1663e?

Black. It scores 6.17:1 against #e1663e, versus 3.40:1 for white — AA at any size.

Is #e1663e accessible on a white background?

#e1663e on white scores 3.40:1, which only clears AA for large text — 18.66px bold or 24px regular and up. Darken it to #CC4A20 to reach 4.5:1, or #9C3818 for 7:1.

What is the complementary color of #e1663e?

#3EB9E1 sits directly opposite on the wheel. Softer options are the split-complements #3EE1B7 and #3E68E1, which give the same contrast with far less vibration.

What colors go well with #e1663e?

For interface work: #FAF6F4 as the surface, #EDCBC0 for borders, #9B5E4B for secondary text, #18B4B4 as an accent and #6E2811 for hover and pressed states. For a palette, the analogous pair #E13E68 and #E1B73E stays calm, while #3EB9E1 is the loudest partner.

What is #e1663e in CMYK for printing?

cmyk(0%, 55%, 72%, 12%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #e1663e warm or cool?

Warm — it scores 9 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #E1773E; nudged cooler, #E33C50.

Which Tailwind color is closest to #e1663e?

The red family — its 500 step is #ef4444, ΔE2000 10.1 away. That is a visible difference, so define #e1663e as a custom token rather than reaching for the built-in.

How do I use #e1663e in Tailwind CSS?

Inline it as an arbitrary value with bg-[#e1663e] or text-[#e1663e], 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 #e1663e with 50% opacity?

rgba(225, 102, 62, 0.5), or #e1663e80 in eight-digit hex. Over white that composites to #F0B39F; over black, #71331F.

Is #e1663e a web-safe color?

No. The nearest web-safe colour is #CC6633, ΔE2000 5.5 away. The palette only matters for legacy displays and some email clients now.

What does the color #e1663e 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 #e1663e?

The safest is same-hue elevation: linear-gradient(135deg, #E99073, #e1663e 45%, #6E2811). For more colour, a short hue run to #DDDC24 keeps it rich without turning muddy.

Work with #e1663e in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #e1663e at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.