#1B4B2B#1B4B2B

#1B4B2B is a dark, moderate green. Relative luminance 0.054; OKLCH L 37.0% C 0.076 H 151.8°. Best body text is #FFFFFF at 10.06:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B2B
RGB	rgb(27, 75, 43)
HSL	hsl(140, 47%, 20%)
HSV	hsv(140, 64%, 29%)
CMYK	cmyk(64%, 0%, 42.7%, 70.6%)
CIE-LAB	lab(27.95, -24.64, 14.35)
CIE-LCH	lch(27.95, 28.51, 149.79°)
OKLab	oklab(37.04% -0.0667 0.0357)
OKLCH	oklch(37.04% 0.076 151.8)
XYZ	xyz(3.4039, 5.4393, 3.1555)
Luminance	0.0544 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B2B #4B1B3B

analogous

#234B1B #1B4B2B #1B4B43

triadic

#1B4B2B #2B1B4B #4B2B1B

tetradic

#1B4B2B #1B234B #4B1B3B #4B431B

square

#1B4B2B #1B234B #4B1B3B #4B431B

split-complementary

#1B4B2B #431B4B #4B1B23

monochromatic

#08170D #0B1E11 #1B4B2B #2B7845 #3BA55F

Accessibility & contrast

On white

10.06

#1B4B2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1B4B2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B2B

10.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B2B	#FFFFFF	#000000	##FFFFFF
##1B4B2B	1.00	10.06	2.09	10.06
#FFFFFF	10.06	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B4529

Deuteranopia (green-blind)

#45402D

Tritanopia (blue-blind)

#0D4A43

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1b4b2b;
/* rgb */ color: rgb(27, 75, 43);
/* oklch */ color: oklch(37.0% 0.076 151.8);

Tailwind

colors: {
  custom: {
    50: '#5d7e64',
    500: '#1b4b2b',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b2b;
$custom-light: #5d7e64;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b2b",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 43
  },
  "hsl": {
    "h": 140,
    "s": 47.059,
    "l": 20
  },
  "oklch": {
    "l": 0.37042,
    "c": 0.07571,
    "h": 151.8
  },
  "luminance": 0.0544
}

Semantic roles & 50–950 ramp

primary

#1B4B2B

secondary

#81416C

accent

#51AAD7

background

#F5F7F6

surface

#E9EEEB

border

#C5C9C6

text

#040A05

muted

#797C7A

Preview Lab

Preview with #1B4B2B

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

Preview Lab → · Contrast checker → · Palette generator →