#A1181F#A1181F

#A1181F is a mid, vivid red. Relative luminance 0.083; OKLCH L 45.8% C 0.170 H 25.4°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#A1181F
RGB	rgb(161, 24, 31)
HSL	hsl(357, 74%, 36%)
HSV	hsv(357, 85%, 63%)
CMYK	cmyk(0%, 85.1%, 80.7%, 36.9%)
CIE-LAB	lab(34.66, 53.45, 33.72)
CIE-LCH	lch(34.66, 63.20, 32.24°)
OKLab	oklab(45.75% 0.154 0.073)
OKLCH	oklch(45.75% 0.17 25.4)
XYZ	xyz(15.2738, 8.3318, 2.1000)
Luminance	0.0833 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A1181F #18A19A

analogous

#A11864 #A1181F #A15618

triadic

#A1181F #1FA118 #181FA1

tetradic

#A1181F #64A118 #18A19A #5618A1

square

#A1181F #64A118 #18A19A #5618A1

split-complementary

#A1181F #18A156 #1864A1

monochromatic

#36080A #6C1015 #A1181F #D62029 #E54F56

Accessibility & contrast

On white

7.88

#A1181F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#A1181F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A1181F

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A1181F	#FFFFFF	#000000	##FFFFFF
##A1181F	1.00	7.88	2.67	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#463F1D

Deuteranopia (green-blind)

#675C19

Tritanopia (blue-blind)

#B2001D

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #a1181f;
/* rgb */ color: rgb(161, 24, 31);
/* oklch */ color: oklch(45.8% 0.170 25.4);

Tailwind

colors: {
  custom: {
    50: '#c6665b',
    500: '#a1181f',
    950: '#000000',
  },
}

SCSS

$custom: #a1181f;
$custom-light: #c6665b;
$custom-dark: #000000;

JSON

{
  "hex": "#a1181f",
  "rgb": {
    "r": 161,
    "g": 24,
    "b": 31
  },
  "hsl": {
    "h": 356.934,
    "s": 74.054,
    "l": 36.275
  },
  "oklch": {
    "l": 0.4575,
    "c": 0.17044,
    "h": 25.4
  },
  "luminance": 0.08329
}

Semantic roles & 50–950 ramp

primary

#A1181F

secondary

#4EC7C1

accent

#F1E737

background

#FDF6F5

surface

#FAEBE9

border

#D3C6C5

text

#150704

muted

#837A79

Preview Lab

Preview with #A1181F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →