#1B581D#1B581D

#1B581D is a dark, moderate green. Relative luminance 0.073; OKLCH L 40.7% C 0.110 H 143.7°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#1B581D
RGB	rgb(27, 88, 29)
HSL	hsl(122, 53%, 23%)
HSV	hsv(122, 69%, 35%)
CMYK	cmyk(69.3%, 0%, 67%, 65.5%)
CIE-LAB	lab(32.48, -32.72, 27.89)
CIE-LCH	lch(32.48, 43.00, 139.56°)
OKLab	oklab(40.71% -0.0888 0.0652)
OKLCH	oklch(40.71% 0.11 143.7)
XYZ	xyz(4.1632, 7.3007, 2.3519)
Luminance	0.0730 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B581D #581B56

analogous

#38581B #1B581D #1B583B

triadic

#1B581D #1D1B58 #581D1B

tetradic

#1B581D #1B3858 #581B56 #583B1B

square

#1B581D #1B3858 #581B56 #583B1B

split-complementary

#1B581D #3B1B58 #581B38

monochromatic

#071708 #0D290E #1B581D #29872C #38B63C

Accessibility & contrast

On white

8.54

#1B581D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1B581D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B581D

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B581D	#FFFFFF	#000000	##FFFFFF
##1B581D	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5016

Deuteranopia (green-blind)

#524A22

Tritanopia (blue-blind)

#0D554B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b581d;
/* rgb */ color: rgb(27, 88, 29);
/* oklch */ color: oklch(40.7% 0.110 143.7);

Tailwind

colors: {
  custom: {
    50: '#60885b',
    500: '#1b581d',
    950: '#000000',
  },
}

SCSS

$custom: #1b581d;
$custom-light: #60885b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b581d",
  "rgb": {
    "r": 27,
    "g": 88,
    "b": 29
  },
  "hsl": {
    "h": 121.967,
    "s": 53.043,
    "l": 22.549
  },
  "oklch": {
    "l": 0.40706,
    "c": 0.11013,
    "h": 143.7
  },
  "luminance": 0.07301
}

Semantic roles & 50–950 ramp

primary

#1B581D

secondary

#8E418B

accent

#4BD8DC

background

#F6F8F5

surface

#EBF0E9

border

#C6CBC5

text

#050B04

muted

#7A7C79

Preview Lab

Preview with #1B581D

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

Preview Lab → · Contrast checker → · Palette generator →