#1B511F#1B511F

#1B511F is a dark, moderate green. Relative luminance 0.062; OKLCH L 38.6% C 0.098 H 144.6°. Best body text is #FFFFFF at 9.36:1 contrast (WCAG AA passes).

Color values

HEX	#1B511F
RGB	rgb(27, 81, 31)
HSL	hsl(124, 50%, 21%)
HSV	hsv(124, 67%, 32%)
CMYK	cmyk(66.7%, 0%, 61.7%, 68.2%)
CIE-LAB	lab(29.95, -29.51, 23.91)
CIE-LCH	lch(29.95, 37.98, 140.99°)
OKLab	oklab(38.63% -0.08 0.0568)
OKLCH	oklch(38.63% 0.098 144.6)
XYZ	xyz(3.6415, 6.2165, 2.3040)
Luminance	0.0622 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Forest Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B511F #511B4D

analogous

#32511B #1B511F #1B513A

triadic

#1B511F #1F1B51 #511F1B

tetradic

#1B511F #1B3251 #511B4D #513A1B

square

#1B511F #1B3251 #511B4D #513A1B

split-complementary

#1B511F #3A1B51 #511B32

monochromatic

#081709 #0C230D #1B511F #2A7F31 #3AAD42

Accessibility & contrast

On white

9.36

#1B511F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1B511F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B511F

9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B511F	#FFFFFF	#000000	##FFFFFF
##1B511F	1.00	9.36	2.24	9.36
#FFFFFF	9.36	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#53491A

Deuteranopia (green-blind)

#4C4523

Tritanopia (blue-blind)

#104F46

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b511f;
/* rgb */ color: rgb(27, 81, 31);
/* oklch */ color: oklch(38.6% 0.098 144.6);

Tailwind

colors: {
  custom: {
    50: '#5f825c',
    500: '#1b511f',
    950: '#000000',
  },
}

SCSS

$custom: #1b511f;
$custom-light: #5f825c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b511f",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 31
  },
  "hsl": {
    "h": 124.444,
    "s": 50,
    "l": 21.176
  },
  "oklch": {
    "l": 0.38625,
    "c": 0.09809,
    "h": 144.6
  },
  "luminance": 0.06217
}

Semantic roles & 50–950 ramp

primary

#1B511F

secondary

#874182

accent

#4ECFDA

background

#F5F8F5

surface

#E9EFE9

border

#C5CAC5

text

#050A04

muted

#797C79

Preview Lab

Preview with #1B511F

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

Preview Lab → · Contrast checker → · Palette generator →