#1B3F04#1B3F04

#1B3F04 is a dark, moderate yellow-green. Relative luminance 0.038; OKLCH L 32.8% C 0.094 H 136.5°. Best body text is #FFFFFF at 11.94:1 contrast (WCAG AA passes).

Color values

HEX	#1B3F04
RGB	rgb(27, 63, 4)
HSL	hsl(97, 88%, 13%)
HSV	hsv(97, 94%, 25%)
CMYK	cmyk(57.1%, 0%, 93.7%, 75.3%)
CIE-LAB	lab(22.99, -24.45, 29.21)
CIE-LCH	lch(22.99, 38.09, 129.94°)
OKLab	oklab(32.8% -0.0682 0.0647)
OKLCH	oklch(32.8% 0.094 136.5)
XYZ	xyz(2.2514, 3.7966, 0.7290)
Luminance	0.0380 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Forrest Green

#154406

ΔE00 2.16

Hunter Green (survey)

Forest Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3F04 #28043F

analogous

#383F04 #1B3F04 #043F0A

triadic

#1B3F04 #041B3F #3F041B

tetradic

#1B3F04 #04383F #28043F #3F0A04

square

#1B3F04 #04383F #28043F #3F0A04

split-complementary

#1B3F04 #0A043F #3F0438

monochromatic

#0C1D02 #0C1D02 #1B3F04 #347908 #4CB20B

Accessibility & contrast

On white

11.94

#1B3F04 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1B3F04 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3F04

11.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3F04	#FFFFFF	#000000	##FFFFFF
##1B3F04	1.00	11.94	1.76	11.94
#FFFFFF	11.94	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#423900

Deuteranopia (green-blind)

#3D360A

Tritanopia (blue-blind)

#193C34

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b3f04;
/* rgb */ color: rgb(27, 63, 4);
/* oklch */ color: oklch(32.8% 0.094 136.5);

Tailwind

colors: {
  custom: {
    50: '#5c744a',
    500: '#1b3f04',
    950: '#000000',
  },
}

SCSS

$custom: #1b3f04;
$custom-light: #5c744a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3f04",
  "rgb": {
    "r": 27,
    "g": 63,
    "b": 4
  },
  "hsl": {
    "h": 96.61,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.32801,
    "c": 0.09396,
    "h": 136.5
  },
  "luminance": 0.03797
}

Semantic roles & 50–950 ramp

primary

#1B3F04

secondary

#5A1E80

accent

#2AFEAB

background

#F5F7F4

surface

#E9EDE7

border

#C5C8C3

text

#040801

muted

#797B77

Preview Lab

Preview with #1B3F04

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

Preview Lab → · Contrast checker → · Palette generator →