#1B4004#1B4004

#1B4004 is a dark, moderate yellow-green. Relative luminance 0.039; OKLCH L 33.1% C 0.095 H 136.7°. Best body text is #FFFFFF at 11.79:1 contrast (WCAG AA passes).

Color values

HEX	#1B4004
RGB	rgb(27, 64, 4)
HSL	hsl(97, 88%, 13%)
HSV	hsv(97, 94%, 25%)
CMYK	cmyk(57.8%, 0%, 93.8%, 74.9%)
CIE-LAB	lab(23.37, -24.91, 29.59)
CIE-LCH	lch(23.37, 38.68, 130.09°)
OKLab	oklab(33.11% -0.0694 0.0654)
OKLCH	oklch(33.11% 0.095 136.7)
XYZ	xyz(2.3072, 3.9084, 0.7477)
Luminance	0.0391 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Forrest Green

#154406

ΔE00 1.87

Hunter Green (survey)

Forest Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4004 #290440

analogous

#394004 #1B4004 #04400B

triadic

#1B4004 #041B40 #40041B

tetradic

#1B4004 #043940 #290440 #400B04

square

#1B4004 #043940 #290440 #400B04

split-complementary

#1B4004 #0B0440 #400439

monochromatic

#0C1D02 #0C1D02 #1B4004 #337A08 #4CB30B

Accessibility & contrast

On white

11.79

#1B4004 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1B4004 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4004

11.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4004	#FFFFFF	#000000	##FFFFFF
##1B4004	1.00	11.79	1.78	11.79
#FFFFFF	11.79	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#433A00

Deuteranopia (green-blind)

#3E370B

Tritanopia (blue-blind)

#193D35

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b4004;
/* rgb */ color: rgb(27, 64, 4);
/* oklch */ color: oklch(33.1% 0.095 136.7);

Tailwind

colors: {
  custom: {
    50: '#5c754a',
    500: '#1b4004',
    950: '#000000',
  },
}

SCSS

$custom: #1b4004;
$custom-light: #5c754a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4004",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 4
  },
  "hsl": {
    "h": 97,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.33113,
    "c": 0.09532,
    "h": 136.7
  },
  "luminance": 0.03909
}

Semantic roles & 50–950 ramp

primary

#1B4004

secondary

#5B1F81

accent

#29FEAD

background

#F5F7F4

surface

#E9EDE7

border

#C5C8C3

text

#040801

muted

#797B77

Preview Lab

Preview with #1B4004

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

Preview Lab → · Contrast checker → · Palette generator →