#1B552B#1B552B

#1B552B is a dark, moderate green. Relative luminance 0.069; OKLCH L 40.0% C 0.092 H 149.4°. Best body text is #FFFFFF at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#1B552B
RGB	rgb(27, 85, 43)
HSL	hsl(137, 52%, 22%)
HSV	hsv(137, 68%, 33%)
CMYK	cmyk(68.2%, 0%, 49.4%, 66.7%)
CIE-LAB	lab(31.59, -29.25, 19.07)
CIE-LCH	lch(31.59, 34.92, 146.90°)
OKLab	oklab(40.03% -0.079 0.0468)
OKLCH	oklch(40.03% 0.092 149.4)
XYZ	xyz(4.1362, 6.9040, 3.3997)
Luminance	0.0690 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B552B #551B45

analogous

#28551B #1B552B #1B5548

triadic

#1B552B #2B1B55 #552B1B

tetradic

#1B552B #1B2855 #551B45 #55481B

square

#1B552B #1B2855 #551B45 #55481B

split-complementary

#1B552B #481B55 #551B28

monochromatic

#07170C #0C2714 #1B552B #2A8342 #39B25A

Accessibility & contrast

On white

8.82

#1B552B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1B552B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B552B

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B552B	#FFFFFF	#000000	##FFFFFF
##1B552B	1.00	8.82	2.38	8.82
#FFFFFF	8.82	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564D28

Deuteranopia (green-blind)

#4E482E

Tritanopia (blue-blind)

#08534B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b552b;
/* rgb */ color: rgb(27, 85, 43);
/* oklch */ color: oklch(40.0% 0.092 149.4);

Tailwind

colors: {
  custom: {
    50: '#5f8565',
    500: '#1b552b',
    950: '#000000',
  },
}

SCSS

$custom: #1b552b;
$custom-light: #5f8565;
$custom-dark: #000000;

JSON

{
  "hex": "#1b552b",
  "rgb": {
    "r": 27,
    "g": 85,
    "b": 43
  },
  "hsl": {
    "h": 136.552,
    "s": 51.786,
    "l": 21.961
  },
  "oklch": {
    "l": 0.4003,
    "c": 0.09176,
    "h": 149.4
  },
  "luminance": 0.06904
}

Semantic roles & 50–950 ramp

primary

#1B552B

secondary

#8B4176

accent

#4DB4DB

background

#F5F8F6

surface

#EAEFEB

border

#C6CAC6

text

#050B05

muted

#797C7A

Preview Lab

Preview with #1B552B

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

Preview Lab → · Contrast checker → · Palette generator →