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red · warm

#cb1925

a dark, electric red · warm · closest name: Firebrick

Token name suggestion: Shadow Cardinal

RGB
203, 25, 37
HSL
356°, 78%, 45%
CMYK
0, 88, 82, 20
Luminance
0.1353

#cb1925 is a dark electric red, 356° on the wheel and 19/100 on the cool side. Put white text on it (5.67:1). As text it scores 5.67:1 on white — safe at any size. Nearest name is Firebrick, nearest Tailwind family is red.

hsl(356 78% 45%)rgb(203 25 37)Base step 600AA inkWarm

At a glance

Every number on this page in one read: what #cb1925 is made of, how bright it looks, and which way it leans.

Hex
#cb1925
Hue
356°
red
Saturation
78%
electric
Lightness
45%
dark
Brightness
80%
HSV value
Perceived
44%
weighted brightness
Luminance
0.1353
WCAG relative
Temperature
Warm
19/100 cool
Color family
Red
Tone
Electric
Best ink
White
5.67:1
Closest name
Firebrick
ΔE2000 4.7
Chroma
77.4
LCH, 0–130ish
OKLCH L
0.539
perceptual lightness
Tailwind
red
500 · ΔE 11.5
Web-safe
#CC0033
nearest of 216
Where it sits
Hue356° of 360°
Saturation78%
Lightness45%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #cb1925.

Temperature
Warm ← → Cool19% 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
Red94%
Green5%
Blue1%

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

Every format

HEX#cb1925
HEX (8-digit)#cb1925ff
RGBrgb(203, 25, 37)
RGBArgba(203, 25, 37, 1)
HSLhsl(356, 78%, 45%)
HSV / HSBhsv(356, 88%, 80%)
HWBhwb(356 10% 20%)
CMYKcmyk(0%, 88%, 82%, 20%)
LABlab(43.5 65.0 42.1)
LCHlch(43.5 77.4 32.9)
OKLCHoklch(0.539 0.207 25.6)
XYZ (D65)xyz(25.31, 13.53, 3.03)
Decimal13310245
Display P3color(display-p3 0.796 0.098 0.145)
Web-safe#CC0033

Copy-ready code

every platformclick to select
/* CSS */
color: #cb1925;
background-color: #cb1925;
/* CSS custom property */
--brand: #cb1925;
/* Tailwind (arbitrary) */
class="text-[#cb1925] bg-[#cb1925]"
/* SCSS */
$brand: #cb1925;
/* SwiftUI */
Color(red: 0.796, green: 0.098, blue: 0.145)
/* UIKit */
UIColor(red: 0.796, green: 0.098, blue: 0.145, alpha: 1)
/* Android XML */
<color name="brand">#CB1925</color>
/* Android Compose */
Color(0xFFCB1925)
/* Flutter */
Color(0xFFCB1925)
/* Python / OpenCV (BGR) */
(37, 25, 203)
/* Python / PIL (RGB) */
(203, 25, 37)
/* Java AWT */
new Color(203, 25, 37)
/* .NET */
Color.FromArgb(255, 203, 25, 37)
/* OpenGL / Unity (0–1) */
(0.7961f, 0.0980f, 0.1451f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{203,25,37}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #cb1925 85%, white);
border-color: color-mix(in oklab, #cb1925 40%, transparent);
/* theme-aware in one line */
color: light-dark(#720E15, #EED3D4);
/* relative colour syntax */
--hover: hsl(from #cb1925 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: #FCF3F3;
  --brand-100: #F9E6E8;
  --brand-200: #F5C7CA;
  --brand-300: #F39BA1;
  --brand-400: #ED6972;
  --brand-500: #E63743;
  --brand-600: #cb1925;
  --brand-700: #B61621;
  --brand-800: #91121A;
  --brand-900: #691117;
  --brand-950: #420B0E;
  --brand: #cb1925;
  --brand-ink: #ffffff;
  --brand-surface: #FAF4F5;
  --brand-border: #EDC0C3;
  --brand-hover: #AB151F;
  --brand-pressed: #8B1119;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #241415;
    --brand-ink: #EED3D4;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FCF3F3',
        100: '#F9E6E8',
        200: '#F5C7CA',
        300: '#F39BA1',
        400: '#ED6972',
        500: '#E63743',
        600: '#cb1925',
        700: '#B61621',
        800: '#91121A',
        900: '#691117',
        950: '#420B0E',
        DEFAULT: '#cb1925',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FCF3F3,
  '100': #F9E6E8,
  '200': #F5C7CA,
  '300': #F39BA1,
  '400': #ED6972,
  '500': #E63743,
  '600': #cb1925,
  '700': #B61621,
  '800': #91121A,
  '900': #691117,
  '950': #420B0E,
);
$brand-base: #cb1925;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FCF3F3", "$type": "color" },
      "100": { "$value": "#F9E6E8", "$type": "color" },
      "200": { "$value": "#F5C7CA", "$type": "color" },
      "300": { "$value": "#F39BA1", "$type": "color" },
      "400": { "$value": "#ED6972", "$type": "color" },
      "500": { "$value": "#E63743", "$type": "color" },
      "600": { "$value": "#cb1925", "$type": "color" },
      "700": { "$value": "#B61621", "$type": "color" },
      "800": { "$value": "#91121A", "$type": "color" },
      "900": { "$value": "#691117", "$type": "color" },
      "950": { "$value": "#420B0E", "$type": "color" }
    },
    "brandInk": { "$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 #cb1925 · 5.67:1
Use #ffffffAA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 5.67:1 · recommended
AA pass · AA large pass · AAA fail
Aa
Black text · 3.71:1
AA fail · AA large pass · AAA fail
Reading the other direction: #cb1925 as text scores 5.67:1 on white and 3.71:1 on black.
Best tinted ink on it, if plain black or white feels flat: #FCE8EA at 4.82:1.

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
#cb1925 · 5.67:1
AA on whitealready passes
#cb1925
The quick fox
#B01620 · 7.04:1
AAA on white−6% L
#B01620
The quick fox
#E31F2C · 4.50:1
AA on black+6% L
#E31F2C
The quick fox
#ED6C75 · 7.00:1
AAA on black+23% L
#ED6C75

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #CB1925 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
#cb1925 on white: 5.67:1
AA ✓ pass · AA-large · AAA
Aa
#cb1925 on black: 3.71:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #cb1925 as text on that neutral, and that neutral as text on #cb1925.

NeutralRatioBoth directions
White5.67:1AaAa
Slate 505.42:1AaAa
Slate 1005.17:1AaAa
Slate 2004.60:1AaAa
Slate 3003.82:1AaAa
Slate 4002.21:1AaAa
Slate 5001.19:1AaAa
Slate 6001.34:1AaAa
Slate 7001.83:1AaAa
Slate 8002.58:1AaAa
Slate 9003.15:1AaAa
Black3.71:1AaAa
Colour vision deficiency
true color
protanopia · #584F23
deuteranopia · #82741B
tritanopia · #E00021

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. #cb1925 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.

#FCF3F3
#F9E6E8
#F5C7CA
#F39BA1
#ED6972
#E63743
#cb1925
#B61621
#91121A
#691117
#420B0E
Base = 600Lightest = 50 · #FCF3F3Darkest = 950 · #420B0EText 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 0.052 25.6);
  --brand-100: oklch(0.94 0.083 25.6);
  --brand-200: oklch(0.88 0.124 25.6);
  --brand-300: oklch(0.80 0.162 25.6);
  --brand-400: oklch(0.72 0.191 25.6);
  --brand-500: oklch(0.64 0.207 25.6);
  --brand-600: oklch(0.56 0.207 25.6);
  --brand-700: oklch(0.48 0.195 25.6);
  --brand-800: oklch(0.40 0.174 25.6);
  --brand-900: oklch(0.32 0.145 25.6);
  --brand-950: oklch(0.24 0.114 25.6);
}

Colors that work with #cb1925

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#FAF4F5
Tinted page background
Border#EDC0C3
Hairlines and dividers
Muted text#9B4B50
Captions on the surface
Accent#12BA85
Second voice, not a rival
Dark variant#720E15
Hover, pressed, headers
Light variant#FCE8EA
Selected rows, tints
Dark surface#241415
Dark-mode background
Hover#AB151F
One step down in lightness
Pressed#8B1119
Two steps down
Disabled#BD979A
Chroma pulled out
Focus ring#EA0F1D
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 #cb1925

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.

At this chroma the association is amplified — it will dominate anything placed beside it, so give it space and use it sparingly. 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
  • EnergyHigh
  • Weight55/100
  • 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#19CBBF
Analogous left#CB197E
Analogous right#CB6619
Split-complement 1#19CB66
Split-complement 2#197ECB
Triadic 1#25CB19
Triadic 2#1925CB
Tetradic#7ECB19
On the wheel
Base+30°−30°+120°+240°+180°356°

#cb1925 sits at 356°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red79.6%
Green9.8%
Blue14.5%
R · 0–255
203
0xcb
G · 0–255
25
0x19
B · 0–255
37
0x25

CMYK percentages

Cyan0.0%
Magenta87.7%
Yellow81.8%
Key (black)20.4%

Total ink coverage is 190%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#cb1925 text on a black background

contrast 3.71:1

Card sample

#cb1925 text on a white background

contrast 5.67:1

Card sample

#cb1925 on grey

5.17:1

#cb1925 on its own surface

5.22:1

#cb1925 on its dark surface

3.12:1

CSS3 live lab

Text font color

The quick brown fox

color: #cb1925;
Background color
Panel with #cb1925 background
background-color: #cb1925;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #cb1925;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(203, 25, 37, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(203, 25, 37, 0.45);
Border & gradient
Gradient panel
border: 3px solid #cb1925;
background: linear-gradient(135deg, #cb1925, #CB8419);
Gradient text

Gradient headline

background: linear-gradient(90deg, #cb1925, #CBB019);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #cb1925;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #cb1925;
caret-color: #cb1925;
Left rule
Pull quote or callout
border-left: 4px solid #cb1925;
Ring + tint
Selected chip
background: #FCE8EA;
box-shadow: inset 0 0 0 2px #cb1925;
Conic badge
68%
background: conic-gradient(#cb1925 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #cb1925 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(203, 25, 37, 0.5)
rgb(203 25 37 / 50%)
#cb192580
hsl(356 78% 45% / 50%)
color-mix(in srgb, #cb1925 50%, transparent)
Alpha8-digit hexFlat on white
10%#cb19251a#FAE8E9
20%#cb192533#F5D1D3
40%#cb192566#EAA3A8
60%#cb192599#E0757C
80%#cb1925cc#D54751

Gradients from #cb1925

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, #E73A46, #cb1925 45%, #720E15);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #cb1925, #B07F16);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #cb1925, #19CBBF);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #EA5660 0%, #cb1925 45%, #720E15 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #FAF4F5, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #E631A7 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #E3851F 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #720E15 0%, transparent 65%), #cb1925;

Monochromatic scale

Palettes built from #cb1925

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.

#cb1925 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

Too dim on dark surfaces at 3.71:1 — lift it to #E31F2C 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.

#cb1925, answered

What color is #cb1925?

#cb1925 is a dark electric red, closest to Firebrick (ΔE2000 4.7). It sits at 356° on the hue wheel with 78% saturation and 45% lightness, which reads as warm.

What is the RGB value of #cb1925?

rgb(203, 25, 37) — 203 red, 25 green and 37 blue out of 255, or 79.6% / 9.8% / 14.5% by channel.

What is #cb1925 in HSL and HSV?

hsl(356, 78%, 45%) and hsv(356, 88%, 80%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #cb1925 a light or a dark color?

It is a dark color. Relative luminance is 0.1353 and perceived brightness is 44%, so white text on it reaches 5.67:1.

Should I use black or white text on #cb1925?

White. It scores 5.67:1 against #cb1925, versus 3.71:1 for black — AA at any size.

Is #cb1925 accessible on a white background?

#cb1925 on white scores 5.67:1, which clears AA at every size but not AAA.

What is the complementary color of #cb1925?

#19CBBF sits directly opposite on the wheel. Softer options are the split-complements #19CB66 and #197ECB, which give the same contrast with far less vibration.

What colors go well with #cb1925?

For interface work: #FAF4F5 as the surface, #EDC0C3 for borders, #9B4B50 for secondary text, #12BA85 as an accent and #720E15 for hover and pressed states. For a palette, the analogous pair #CB197E and #CB6619 stays calm, while #19CBBF is the loudest partner.

What is #cb1925 in CMYK for printing?

cmyk(0%, 88%, 82%, 20%). 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 #cb1925 warm or cool?

Warm — it scores 19 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #CB4019; nudged cooler, #CD1766.

Which Tailwind color is closest to #cb1925?

The red family — its 500 step is #ef4444, ΔE2000 11.5 away. That is a visible difference, so define #cb1925 as a custom token rather than reaching for the built-in.

How do I use #cb1925 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#cb1925] or text-[#cb1925], 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 #cb1925 with 50% opacity?

rgba(203, 25, 37, 0.5), or #cb192580 in eight-digit hex. Over white that composites to #E58C92; over black, #660D13.

Is #cb1925 a web-safe color?

No. The nearest web-safe colour is #CC0033, ΔE2000 4.9 away. The palette only matters for legacy displays and some email clients now.

What does the color #cb1925 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 #cb1925?

The safest is same-hue elevation: linear-gradient(135deg, #E73A46, #cb1925 45%, #720E15). For more colour, a short hue run to #B07F16 keeps it rich without turning muddy.

Work with #cb1925 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #cb1925 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.