#A91F1F#A91F1F

#A91F1F is a mid, vivid red. Relative luminance 0.095; OKLCH L 47.7% C 0.174 H 26.9°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#A91F1F
RGB	rgb(169, 31, 31)
HSL	hsl(0, 69%, 39%)
HSV	hsv(0, 82%, 66%)
CMYK	cmyk(0%, 81.7%, 81.7%, 33.7%)
CIE-LAB	lab(36.96, 53.99, 36.57)
CIE-LCH	lch(36.96, 65.21, 34.11°)
OKLab	oklab(47.74% 0.1548 0.0785)
OKLCH	oklch(47.74% 0.174 26.9)
XYZ	xyz(17.1016, 9.5167, 2.2325)
Luminance	0.0951 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A91F1F #1FA9A9

analogous

#A91F64 #A91F1F #A9641F

triadic

#A91F1F #1FA91F #1F1FA9

tetradic

#A91F1F #64A91F #1FA9A9 #641FA9

square

#A91F1F #64A91F #1FA9A9 #641FA9

split-complementary

#A91F1F #1FA964 #1F64A9

monochromatic

#420C0C #751616 #A91F1F #D82D2D #E26060

Accessibility & contrast

On white

7.23

#A91F1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#A91F1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A91F1F

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A91F1F	#FFFFFF	#000000	##FFFFFF
##A91F1F	1.00	7.23	2.90	7.23
#FFFFFF	7.23	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C441D

Deuteranopia (green-blind)

#6D6218

Tritanopia (blue-blind)

#BB0021

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a91f1f;
/* rgb */ color: rgb(169, 31, 31);
/* oklch */ color: oklch(47.7% 0.174 26.9);

Tailwind

colors: {
  custom: {
    50: '#cc695c',
    500: '#a91f1f',
    950: '#000000',
  },
}

SCSS

$custom: #a91f1f;
$custom-light: #cc695c;
$custom-dark: #000000;

JSON

{
  "hex": "#a91f1f",
  "rgb": {
    "r": 169,
    "g": 31,
    "b": 31
  },
  "hsl": {
    "h": 0,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.47743,
    "c": 0.17351,
    "h": 26.9
  },
  "luminance": 0.09514
}

Semantic roles & 50–950 ramp

primary

#A91F1F

secondary

#5DC7C7

accent

#ECEC3C

background

#FDF6F5

surface

#FBECE9

border

#D4C7C5

text

#150704

muted

#837A79

Preview Lab

Preview with #A91F1F

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

Preview Lab → · Contrast checker → · Palette generator →