#1B400B#1B400B

#1B400B is a dark, moderate green. Relative luminance 0.039; OKLCH L 33.2% C 0.090 H 138.1°. Best body text is #FFFFFF at 11.77:1 contrast (WCAG AA passes).

Color values

HEX	#1B400B
RGB	rgb(27, 64, 11)
HSL	hsl(102, 71%, 15%)
HSV	hsv(102, 83%, 25%)
CMYK	cmyk(57.8%, 0%, 82.8%, 74.9%)
CIE-LAB	lab(23.42, -24.33, 26.78)
CIE-LCH	lch(23.42, 36.19, 132.25°)
OKLab	oklab(33.17% -0.0672 0.0604)
OKLCH	oklch(33.17% 0.09 138.1)
XYZ	xyz(2.3457, 3.9238, 0.9503)
Luminance	0.0392 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Forrest Green

#154406

ΔE00 2.12

Hunter Green (survey)

#0B4008

ΔE00 2.24

Forest Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B400B #300B40

analogous

#36400B #1B400B #0B4016

triadic

#1B400B #0B1B40 #400B1B

tetradic

#1B400B #0B3640 #300B40 #40160B

square

#1B400B #0B3640 #300B40 #40160B

split-complementary

#1B400B #160B40 #400B36

monochromatic

#0B1A04 #0B1A04 #1B400B #317414 #47A81D

Accessibility & contrast

On white

11.77

#1B400B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1B400B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B400B

11.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B400B	#FFFFFF	#000000	##FFFFFF
##1B400B	1.00	11.77	1.78	11.77
#FFFFFF	11.77	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#423A03

Deuteranopia (green-blind)

#3D3710

Tritanopia (blue-blind)

#183D36

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b400b;
/* rgb */ color: rgb(27, 64, 11);
/* oklch */ color: oklch(33.2% 0.090 138.1);

Tailwind

colors: {
  custom: {
    50: '#5c754e',
    500: '#1b400b',
    950: '#000000',
  },
}

SCSS

$custom: #1b400b;
$custom-light: #5c754e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b400b",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 11
  },
  "hsl": {
    "h": 101.887,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.33172,
    "c": 0.09039,
    "h": 138.1
  },
  "luminance": 0.03924
}

Semantic roles & 50–950 ramp

primary

#1B400B

secondary

#642A7D

accent

#3AEDB7

background

#F5F7F4

surface

#E9EDE7

border

#C5C8C3

text

#040802

muted

#797B78

Preview Lab

Preview with #1B400B

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

Preview Lab → · Contrast checker → · Palette generator →