#1B3903#1B3903

#1B3903 is a dark, moderate yellow-green. Relative luminance 0.032; OKLCH L 30.9% C 0.086 H 134.9°. Best body text is #FFFFFF at 12.86:1 contrast (WCAG AA passes).

Color values

HEX	#1B3903
RGB	rgb(27, 57, 3)
HSL	hsl(93, 90%, 12%)
HSV	hsv(93, 95%, 22%)
CMYK	cmyk(52.6%, 0%, 94.7%, 77.6%)
CIE-LAB	lab(20.70, -21.73, 27.17)
CIE-LCH	lch(20.70, 34.79, 128.65°)
OKLab	oklab(30.91% -0.061 0.0612)
OKLCH	oklch(30.91% 0.086 134.9)
XYZ	xyz(1.9315, 3.1657, 0.5954)
Luminance	0.0317 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Dark Green

#033500

ΔE00 3.81

Hunter Green (survey)

Forest Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3903 #210339

analogous

#363903 #1B3903 #033906

triadic

#1B3903 #031B39 #39031B

tetradic

#1B3903 #033639 #210339 #390603

square

#1B3903 #033639 #210339 #390603

split-complementary

#1B3903 #060339 #390336

monochromatic

#0E1D02 #0E1D02 #1B3903 #377306 #52AD09

Accessibility & contrast

On white

12.86

#1B3903 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1B3903 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3903

12.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3903	#FFFFFF	#000000	##FFFFFF
##1B3903	1.00	12.86	1.63	12.86
#FFFFFF	12.86	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C3300

Deuteranopia (green-blind)

#383108

Tritanopia (blue-blind)

#1A362F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b3903;
/* rgb */ color: rgb(27, 57, 3);
/* oklch */ color: oklch(30.9% 0.086 134.9);

Tailwind

colors: {
  custom: {
    50: '#5b6f49',
    500: '#1b3903',
    950: '#000000',
  },
}

SCSS

$custom: #1b3903;
$custom-light: #5b6f49;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3903",
  "rgb": {
    "r": 27,
    "g": 57,
    "b": 3
  },
  "hsl": {
    "h": 93.333,
    "s": 90,
    "l": 11.765
  },
  "oklch": {
    "l": 0.30913,
    "c": 0.08639,
    "h": 134.9
  },
  "luminance": 0.03166
}

Semantic roles & 50–950 ramp

primary

#1B3903

secondary

#511C7C

accent

#29FFA0

background

#F5F6F4

surface

#E9ECE7

border

#C5C7C3

text

#040701

muted

#797A77

Preview Lab

Preview with #1B3903

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

Preview Lab → · Contrast checker → · Palette generator →