#591B10#591B10

#591B10 is a dark, moderate red. Relative luminance 0.029; OKLCH L 31.9% C 0.094 H 32.3°. Best body text is #FFFFFF at 13.22:1 contrast (WCAG AA passes).

Color values

HEX	#591B10
RGB	rgb(89, 27, 16)
HSL	hsl(9, 70%, 21%)
HSV	hsv(9, 82%, 35%)
CMYK	cmyk(0%, 69.7%, 82%, 65.1%)
CIE-LAB	lab(19.83, 27.87, 22.51)
CIE-LCH	lch(19.83, 35.82, 38.93°)
OKLab	oklab(31.95% 0.0793 0.0502)
OKLCH	oklch(31.95% 0.094 32.3)
XYZ	xyz(4.6058, 2.9458, 0.8162)
Luminance	0.0295 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#591B10 #104E59

analogous

#591029 #591B10 #593F10

triadic

#591B10 #10591B #1B1059

tetradic

#591B10 #295910 #104E59 #3F1059

square

#591B10 #295910 #104E59 #3F1059

split-complementary

#591B10 #10593F #102959

monochromatic

#1A0805 #250B07 #591B10 #8D2B19 #C13A23

Accessibility & contrast

On white

13.22

#591B10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#591B10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #591B10

13.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##591B10	#FFFFFF	#000000	##FFFFFF
##591B10	1.00	13.22	1.59	13.22
#FFFFFF	13.22	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C270E

Deuteranopia (green-blind)

#3C350E

Tritanopia (blue-blind)

#630A19

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #591b10;
/* rgb */ color: rgb(89, 27, 16);
/* oklch */ color: oklch(31.9% 0.094 32.3);

Tailwind

colors: {
  custom: {
    50: '#8e5b4f',
    500: '#591b10',
    950: '#000000',
  },
}

SCSS

$custom: #591b10;
$custom-light: #8e5b4f;
$custom-dark: #000000;

JSON

{
  "hex": "#591b10",
  "rgb": {
    "r": 89,
    "g": 27,
    "b": 16
  },
  "hsl": {
    "h": 9.041,
    "s": 69.524,
    "l": 20.588
  },
  "oklch": {
    "l": 0.31946,
    "c": 0.09383,
    "h": 32.3
  },
  "luminance": 0.02945
}

Semantic roles & 50–950 ramp

primary

#591B10

secondary

#338492

accent

#D2EC3B

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0D0401

muted

#7E7977

Preview Lab

Preview with #591B10

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

Preview Lab → · Contrast checker → · Palette generator →