#591B1B#591B1B

#591B1B is a dark, moderate red. Relative luminance 0.030; OKLCH L 32.1% C 0.092 H 23.8°. Best body text is #FFFFFF at 13.15:1 contrast (WCAG AA passes).

Color values

HEX	#591B1B
RGB	rgb(89, 27, 27)
HSL	hsl(0, 53%, 23%)
HSV	hsv(0, 70%, 35%)
CMYK	cmyk(0%, 69.7%, 69.7%, 65.1%)
CIE-LAB	lab(19.99, 28.51, 15.59)
CIE-LCH	lch(19.99, 32.49, 28.68°)
OKLab	oklab(32.13% 0.0838 0.037)
OKLCH	oklch(32.13% 0.092 23.8)
XYZ	xyz(4.7101, 2.9875, 1.3653)
Luminance	0.0299 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#591B1B #1B5959

analogous

#591B3A #591B1B #593A1B

triadic

#591B1B #1B591B #1B1B59

tetradic

#591B1B #3A591B #1B5959 #3A1B59

square

#591B1B #3A591B #1B5959 #3A1B59

split-complementary

#591B1B #1B593A #1B3A59

monochromatic

#170707 #2A0D0D #591B1B #882929 #B73737

Accessibility & contrast

On white

13.15

#591B1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#591B1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #591B1B

13.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##591B1B	#FFFFFF	#000000	##FFFFFF
##591B1B	1.00	13.15	1.60	13.15
#FFFFFF	13.15	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B281A

Deuteranopia (green-blind)

#3B3519

Tritanopia (blue-blind)

#620D1C

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #591b1b;
/* rgb */ color: rgb(89, 27, 27);
/* oklch */ color: oklch(32.1% 0.092 23.8);

Tailwind

colors: {
  custom: {
    50: '#8d5b57',
    500: '#591b1b',
    950: '#000000',
  },
}

SCSS

$custom: #591b1b;
$custom-light: #8d5b57;
$custom-dark: #000000;

JSON

{
  "hex": "#591b1b",
  "rgb": {
    "r": 89,
    "g": 27,
    "b": 27
  },
  "hsl": {
    "h": 0,
    "s": 53.448,
    "l": 22.745
  },
  "oklch": {
    "l": 0.32126,
    "c": 0.09162,
    "h": 23.8
  },
  "luminance": 0.02987
}

Semantic roles & 50–950 ramp

primary

#591B1B

secondary

#418F8F

accent

#DDDD4B

background

#F9F5F5

surface

#F1E9E9

border

#CBC5C5

text

#0D0403

muted

#7E7978

Preview Lab

Preview with #591B1B

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

Preview Lab → · Contrast checker → · Palette generator →