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red · warm

#9f0b13

a dark, electric red · warm · closest name: Dark Red

Token name suggestion: Slate Cherry

RGB
159, 11, 19
HSL
357°, 87%, 33%
CMYK
0, 93, 88, 38
Luminance
0.0766

#9f0b13 is a dark electric red, 357° on the wheel and 18/100 on the cool side. Put white text on it (8.30:1). As text it scores 8.30:1 on white — safe at any size. Nearest name is Dark Red, nearest Tailwind family is red.

hsl(357 87% 33%)rgb(159 11 19)Base step 800AAA inkWarm

At a glance

Every number on this page in one read: what #9f0b13 is made of, how bright it looks, and which way it leans.

Hex
#9f0b13
Hue
357°
red
Saturation
87%
electric
Lightness
33%
dark
Brightness
62%
HSV value
Perceived
34%
weighted brightness
Luminance
0.0766
WCAG relative
Temperature
Warm
18/100 cool
Color family
Red
Tone
Electric
Best ink
White
8.30:1
Closest name
Dark Red
ΔE2000 4.8
Chroma
67.4
LCH, 0–130ish
OKLCH L
0.446
perceptual lightness
Tailwind
red
500 · ΔE 20.6
Web-safe
#990000
nearest of 216
Where it sits
Hue357° of 360°
Saturation87%
Lightness33%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #9f0b13.

Temperature
Warm ← → Cool18% 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
Red96%
Green3%
Blue1%

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

Every format

HEX#9f0b13
HEX (8-digit)#9f0b13ff
RGBrgb(159, 11, 19)
RGBArgba(159, 11, 19, 1)
HSLhsl(357, 87%, 33%)
HSV / HSBhsv(357, 93%, 62%)
HWBhwb(357 4% 38%)
CMYKcmyk(0%, 93%, 88%, 38%)
LABlab(33.3 55.0 38.9)
LCHlch(33.3 67.4 35.2)
OKLCHoklch(0.446 0.176 26.9)
XYZ (D65)xyz(14.54, 7.66, 1.33)
Decimal10423059
Display P3color(display-p3 0.624 0.043 0.075)
Web-safe#990000

Copy-ready code

every platformclick to select
/* CSS */
color: #9f0b13;
background-color: #9f0b13;
/* CSS custom property */
--brand: #9f0b13;
/* Tailwind (arbitrary) */
class="text-[#9f0b13] bg-[#9f0b13]"
/* SCSS */
$brand: #9f0b13;
/* SwiftUI */
Color(red: 0.624, green: 0.043, blue: 0.075)
/* UIKit */
UIColor(red: 0.624, green: 0.043, blue: 0.075, alpha: 1)
/* Android XML */
<color name="brand">#9F0B13</color>
/* Android Compose */
Color(0xFF9F0B13)
/* Flutter */
Color(0xFF9F0B13)
/* Python / OpenCV (BGR) */
(19, 11, 159)
/* Python / PIL (RGB) */
(159, 11, 19)
/* Java AWT */
new Color(159, 11, 19)
/* .NET */
Color.FromArgb(255, 159, 11, 19)
/* OpenGL / Unity (0–1) */
(0.6235f, 0.0431f, 0.0745f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{159,11,19}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #9f0b13 85%, white);
border-color: color-mix(in oklab, #9f0b13 40%, transparent);
/* theme-aware in one line */
color: light-dark(#77080E, #EED3D4);
/* relative colour syntax */
--hover: hsl(from #9f0b13 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: #FDF2F3;
  --brand-100: #FAE5E6;
  --brand-200: #F7C4C7;
  --brand-300: #F8969B;
  --brand-400: #F46269;
  --brand-500: #F12D37;
  --brand-600: #E5101B;
  --brand-700: #BF0D17;
  --brand-800: #9f0b13;
  --brand-900: #6E0C11;
  --brand-950: #45080B;
  --brand: #9f0b13;
  --brand-ink: #ffffff;
  --brand-surface: #FAF4F5;
  --brand-border: #EDC0C2;
  --brand-hover: #7D090F;
  --brand-pressed: #5C060B;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #241415;
    --brand-ink: #EED3D4;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FDF2F3',
        100: '#FAE5E6',
        200: '#F7C4C7',
        300: '#F8969B',
        400: '#F46269',
        500: '#F12D37',
        600: '#E5101B',
        700: '#BF0D17',
        800: '#9f0b13',
        900: '#6E0C11',
        950: '#45080B',
        DEFAULT: '#9f0b13',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FDF2F3,
  '100': #FAE5E6,
  '200': #F7C4C7,
  '300': #F8969B,
  '400': #F46269,
  '500': #F12D37,
  '600': #E5101B,
  '700': #BF0D17,
  '800': #9f0b13,
  '900': #6E0C11,
  '950': #45080B,
);
$brand-base: #9f0b13;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FDF2F3", "$type": "color" },
      "100": { "$value": "#FAE5E6", "$type": "color" },
      "200": { "$value": "#F7C4C7", "$type": "color" },
      "300": { "$value": "#F8969B", "$type": "color" },
      "400": { "$value": "#F46269", "$type": "color" },
      "500": { "$value": "#F12D37", "$type": "color" },
      "600": { "$value": "#E5101B", "$type": "color" },
      "700": { "$value": "#BF0D17", "$type": "color" },
      "800": { "$value": "#9f0b13", "$type": "color" },
      "900": { "$value": "#6E0C11", "$type": "color" },
      "950": { "$value": "#45080B", "$type": "color" }
    },
    "brandInk": { "$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 #9f0b13 · 8.30:1
Use #ffffffAAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 8.30:1 · recommended
AA pass · AA large pass · AAA pass
Aa
Black text · 2.53:1
AA fail · AA large fail · AAA fail
Reading the other direction: #9f0b13 as text scores 8.30:1 on white and 2.53:1 on black.
Best tinted ink on it, if plain black or white feels flat: #FDE7E8 at 7.02:1.

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
#9f0b13 · 8.30:1
AA on whitealready passes
#9f0b13
The quick fox
#9f0b13 · 8.30:1
AAA on whitealready passes
#9f0b13
The quick fox
#EB101C · 4.62:1
AA on black+16% L
#EB101C
The quick fox
#F5686F · 7.09:1
AAA on black+35% L
#F5686F

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #9F0B13 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
#9f0b13 on white: 8.30:1
AA ✓ pass · AA-large · AAA
Aa
#9f0b13 on black: 2.53:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #9f0b13 as text on that neutral, and that neutral as text on #9f0b13.

NeutralRatioBoth directions
White8.30:1AaAa
Slate 507.93:1AaAa
Slate 1007.57:1AaAa
Slate 2006.73:1AaAa
Slate 3005.59:1AaAa
Slate 4003.24:1AaAa
Slate 5001.74:1AaAa
Slate 6001.09:1AaAa
Slate 7001.25:1AaAa
Slate 8001.76:1AaAa
Slate 9002.15:1AaAa
Black2.53:1AaAa
Colour vision deficiency
true color
protanopia · #423A10
deuteranopia · #645908
tritanopia · #B00012

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. #9f0b13 is pinned to step 800; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#FDF2F3
#FAE5E6
#F7C4C7
#F8969B
#F46269
#F12D37
#E5101B
#BF0D17
#9f0b13
#6E0C11
#45080B
Base = 800Lightest = 50 · #FDF2F3Darkest = 950 · #45080BText 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 0.044 26.9);
  --brand-100: oklch(0.94 0.070 26.9);
  --brand-200: oklch(0.88 0.106 26.9);
  --brand-300: oklch(0.80 0.137 26.9);
  --brand-400: oklch(0.72 0.162 26.9);
  --brand-500: oklch(0.64 0.176 26.9);
  --brand-600: oklch(0.56 0.176 26.9);
  --brand-700: oklch(0.48 0.165 26.9);
  --brand-800: oklch(0.40 0.148 26.9);
  --brand-900: oklch(0.32 0.123 26.9);
  --brand-950: oklch(0.24 0.097 26.9);
}

Colors that work with #9f0b13

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#EDC0C2
Hairlines and dividers
Muted text#9B4B4F
Captions on the surface
Accent#08A273
Second voice, not a rival
Dark variant#77080E
Hover, pressed, headers
Light variant#FDE7E8
Selected rows, tints
Dark surface#241415
Dark-mode background
Hover#7D090F
One step down in lightness
Pressed#5C060B
Two steps down
Disabled#A67477
Chroma pulled out
Focus ring#BB030D
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 #9f0b13

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
  • Text on black or near-black surfaces
  • 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
  • Weight67/100
  • 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#0B9F97
Analogous left#9F0B5D
Analogous right#9F4D0B
Split-complement 1#0B9F4D
Split-complement 2#0B5D9F
Triadic 1#139F0B
Triadic 2#0B139F
Tetradic#5D9F0B
On the wheel
Base+30°−30°+120°+240°+180°357°

#9f0b13 sits at 357°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red62.4%
Green4.3%
Blue7.5%
R · 0–255
159
0x9f
G · 0–255
11
0x0b
B · 0–255
19
0x13

CMYK percentages

Cyan0.0%
Magenta93.1%
Yellow88.1%
Key (black)37.6%

Total ink coverage is 219%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#9f0b13 text on a black background

contrast 2.53:1

Card sample

#9f0b13 text on a white background

contrast 8.30:1

Card sample

#9f0b13 on grey

7.57:1

#9f0b13 on its own surface

7.63:1

#9f0b13 on its dark surface

2.13:1

CSS3 live lab

Text font color

The quick brown fox

color: #9f0b13;
Background color
Panel with #9f0b13 background
background-color: #9f0b13;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #9f0b13;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(159, 11, 19, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(159, 11, 19, 0.45);
Border & gradient
Gradient panel
border: 3px solid #9f0b13;
background: linear-gradient(135deg, #9f0b13, #9F660B);
Gradient text

Gradient headline

background: linear-gradient(90deg, #9f0b13, #9F8B0B);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #9f0b13;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #9f0b13;
caret-color: #9f0b13;
Left rule
Pull quote or callout
border-left: 4px solid #9f0b13;
Ring + tint
Selected chip
background: #FDE7E8;
box-shadow: inset 0 0 0 2px #9f0b13;
Conic badge
68%
background: conic-gradient(#9f0b13 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #9f0b13 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(159, 11, 19, 0.5)
rgb(159 11 19 / 50%)
#9f0b1380
hsl(357 87% 33% / 50%)
color-mix(in srgb, #9f0b13 50%, transparent)
Alpha8-digit hexFlat on white
10%#9f0b131a#F5E7E7
20%#9f0b1333#ECCED0
40%#9f0b1366#D99DA1
60%#9f0b1399#C56D71
80%#9f0b13cc#B23C42

Gradients from #9f0b13

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, #D80F1A, #9f0b13 45%, #77080E);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #9f0b13, #825D09);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #9f0b13, #0B9F97);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #EF1722 0%, #9f0b13 45%, #77080E 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%, #CF0E89 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #BC690D 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #77080E 0%, transparent 65%), #9f0b13;

Monochromatic scale

Palettes built from #9f0b13

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.

#9f0b13 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 2.53:1 — lift it to #EB101C 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.

#9f0b13, answered

What color is #9f0b13?

#9f0b13 is a dark electric red, closest to Dark Red (ΔE2000 4.8). It sits at 357° on the hue wheel with 87% saturation and 33% lightness, which reads as warm.

What is the RGB value of #9f0b13?

rgb(159, 11, 19) — 159 red, 11 green and 19 blue out of 255, or 62.4% / 4.3% / 7.5% by channel.

What is #9f0b13 in HSL and HSV?

hsl(357, 87%, 33%) and hsv(357, 93%, 62%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #9f0b13 a light or a dark color?

It is a dark color. Relative luminance is 0.0766 and perceived brightness is 34%, so white text on it reaches 8.30:1.

Should I use black or white text on #9f0b13?

White. It scores 8.30:1 against #9f0b13, versus 2.53:1 for black — AAA at any size.

Is #9f0b13 accessible on a white background?

#9f0b13 on white scores 8.30:1, which clears AAA at every size.

What is the complementary color of #9f0b13?

#0B9F97 sits directly opposite on the wheel. Softer options are the split-complements #0B9F4D and #0B5D9F, which give the same contrast with far less vibration.

What colors go well with #9f0b13?

For interface work: #FAF4F5 as the surface, #EDC0C2 for borders, #9B4B4F for secondary text, #08A273 as an accent and #77080E for hover and pressed states. For a palette, the analogous pair #9F0B5D and #9F4D0B stays calm, while #0B9F97 is the loudest partner.

What is #9f0b13 in CMYK for printing?

cmyk(0%, 93%, 88%, 38%). 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 #9f0b13 warm or cool?

Warm — it scores 18 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #9F2F0B; nudged cooler, #A10949.

Which Tailwind color is closest to #9f0b13?

The red family — its 500 step is #ef4444, ΔE2000 20.6 away. That is a visible difference, so define #9f0b13 as a custom token rather than reaching for the built-in.

How do I use #9f0b13 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#9f0b13] or text-[#9f0b13], 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 #9f0b13 with 50% opacity?

rgba(159, 11, 19, 0.5), or #9f0b1380 in eight-digit hex. Over white that composites to #CF8589; over black, #50060A.

Is #9f0b13 a web-safe color?

No. The nearest web-safe colour is #990000, ΔE2000 3.4 away. The palette only matters for legacy displays and some email clients now.

What does the color #9f0b13 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 #9f0b13?

The safest is same-hue elevation: linear-gradient(135deg, #D80F1A, #9f0b13 45%, #77080E). For more colour, a short hue run to #825D09 keeps it rich without turning muddy.

Work with #9f0b13 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #9f0b13 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.