#1B3F03#1B3F03

#1B3F03 is a dark, moderate yellow-green. Relative luminance 0.038; OKLCH L 32.8% C 0.095 H 136.3°. Best body text is #FFFFFF at 11.94:1 contrast (WCAG AA passes).

Color values

HEX	#1B3F03
RGB	rgb(27, 63, 3)
HSL	hsl(96, 91%, 13%)
HSV	hsv(96, 95%, 25%)
CMYK	cmyk(57.1%, 0%, 95.2%, 75.3%)
CIE-LAB	lab(22.98, -24.54, 29.61)
CIE-LCH	lch(22.98, 38.45, 129.65°)
OKLab	oklab(32.79% -0.0685 0.0654)
OKLCH	oklch(32.79% 0.095 136.3)
XYZ	xyz(2.2459, 3.7944, 0.7002)
Luminance	0.0379 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Forrest Green

#154406

ΔE00 2.17

Hunter Green (survey)

Forest Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3F03 #27033F

analogous

#393F03 #1B3F03 #033F09

triadic

#1B3F03 #031B3F #3F031B

tetradic

#1B3F03 #03393F #27033F #3F0903

square

#1B3F03 #03393F #27033F #3F0903

split-complementary

#1B3F03 #09033F #3F0339

monochromatic

#0D1D01 #0D1D01 #1B3F03 #347906 #4DB409

Accessibility & contrast

On white

11.94

#1B3F03 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1B3F03 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3F03

11.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3F03	#FFFFFF	#000000	##FFFFFF
##1B3F03	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: #1b3f03;
/* rgb */ color: rgb(27, 63, 3);
/* oklch */ color: oklch(32.8% 0.095 136.3);

Tailwind

colors: {
  custom: {
    50: '#5c744a',
    500: '#1b3f03',
    950: '#000000',
  },
}

SCSS

$custom: #1b3f03;
$custom-light: #5c744a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3f03",
  "rgb": {
    "r": 27,
    "g": 63,
    "b": 3
  },
  "hsl": {
    "h": 96,
    "s": 90.909,
    "l": 12.941
  },
  "oklch": {
    "l": 0.32792,
    "c": 0.0947,
    "h": 136.3
  },
  "luminance": 0.03795
}

Semantic roles & 50–950 ramp

primary

#1B3F03

secondary

#591D81

accent

#29FFA9

background

#F5F7F4

surface

#E9EDE7

border

#C5C8C3

text

#040801

muted

#797B77

Preview Lab

Preview with #1B3F03

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

Preview Lab → · Contrast checker → · Palette generator →