#A33F31#A33F31

#A33F31 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.3% C 0.136 H 30.4°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#A33F31
RGB	rgb(163, 63, 49)
HSL	hsl(7, 54%, 42%)
HSV	hsv(7, 70%, 64%)
CMYK	cmyk(0%, 61.3%, 69.9%, 36.1%)
CIE-LAB	lab(40.52, 40.50, 29.76)
CIE-LCH	lch(40.52, 50.26, 36.31°)
OKLab	oklab(50.27% 0.1169 0.0687)
OKLCH	oklch(50.27% 0.136 30.4)
XYZ	xyz(17.4379, 11.5657, 4.2193)
Luminance	0.1156 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33F31 #3195A3

analogous

#A3315C #A33F31 #A37831

triadic

#A33F31 #31A33F #3F31A3

tetradic

#A33F31 #5CA331 #3195A3 #7831A3

square

#A33F31 #5CA331 #3195A3 #7831A3

split-complementary

#A33F31 #31A378 #315CA3

monochromatic

#451B15 #742D23 #A33F31 #C85949 #D68478

Accessibility & contrast

On white

6.34

#A33F31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#A33F31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33F31

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33F31	#FFFFFF	#000000	##FFFFFF
##A33F31	1.00	6.34	3.31	6.34
#FFFFFF	6.34	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A522F

Deuteranopia (green-blind)

#73682E

Tritanopia (blue-blind)

#B3293C

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a33f31;
/* rgb */ color: rgb(163, 63, 49);
/* oklch */ color: oklch(50.3% 0.136 30.4);

Tailwind

colors: {
  custom: {
    50: '#c57869',
    500: '#a33f31',
    950: '#000000',
  },
}

SCSS

$custom: #a33f31;
$custom-light: #c57869;
$custom-dark: #000000;

JSON

{
  "hex": "#a33f31",
  "rgb": {
    "r": 163,
    "g": 63,
    "b": 49
  },
  "hsl": {
    "h": 7.368,
    "s": 53.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.50266,
    "c": 0.13557,
    "h": 30.4
  },
  "luminance": 0.11563
}

Semantic roles & 50–950 ramp

primary

#A33F31

secondary

#71B5BF

accent

#CBDD4B

background

#FCF7F6

surface

#F9EDEB

border

#D2C8C6

text

#140906

muted

#827B7A

Preview Lab

Preview with #A33F31

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

Preview Lab → · Contrast checker → · Palette generator →