#1B3601#1B3601

#1B3601 is a dark, moderate yellow-green. Relative luminance 0.029; OKLCH L 29.9% C 0.084 H 133.5°. Best body text is #FFFFFF at 13.34:1 contrast (WCAG AA passes).

Color values

HEX	#1B3601
RGB	rgb(27, 54, 1)
HSL	hsl(91, 96%, 11%)
HSV	hsv(91, 98%, 21%)
CMYK	cmyk(50%, 0%, 98.1%, 78.8%)
CIE-LAB	lab(19.53, -20.45, 26.67)
CIE-LCH	lch(19.53, 33.61, 127.48°)
OKLab	oklab(29.95% -0.0578 0.0609)
OKLCH	oklch(29.95% 0.084 133.5)
XYZ	xyz(1.7766, 2.8734, 0.4897)
Luminance	0.0287 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Dark Green

#033500

ΔE00 4.06

Hunter Green (survey)

Forest Green (survey)

#06470C

ΔE00 6.92

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3601 #1C0136

analogous

#353601 #1B3601 #013601

triadic

#1B3601 #011B36 #36011B

tetradic

#1B3601 #013536 #1C0136 #360101

square

#1B3601 #013536 #1C0136 #360101

split-complementary

#1B3601 #010136 #360135

monochromatic

#0F1E01 #0F1E01 #1B3601 #397202 #57AE03

Accessibility & contrast

On white

13.34

#1B3601 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1B3601 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3601

13.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3601	#FFFFFF	#000000	##FFFFFF
##1B3601	1.00	13.34	1.57	13.34
#FFFFFF	13.34	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393100

Deuteranopia (green-blind)

#352F06

Tritanopia (blue-blind)

#1B332C

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b3601;
/* rgb */ color: rgb(27, 54, 1);
/* oklch */ color: oklch(29.9% 0.084 133.5);

Tailwind

colors: {
  custom: {
    50: '#5a6d48',
    500: '#1b3601',
    950: '#000000',
  },
}

SCSS

$custom: #1b3601;
$custom-light: #5a6d48;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3601",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 1
  },
  "hsl": {
    "h": 90.566,
    "s": 96.364,
    "l": 10.784
  },
  "oklch": {
    "l": 0.2995,
    "c": 0.08395,
    "h": 133.5
  },
  "luminance": 0.02874
}

Semantic roles & 50–950 ramp

primary

#1B3601

secondary

#4A187B

accent

#29FF96

background

#F5F6F4

surface

#E9EBE6

border

#C5C6C2

text

#040700

muted

#797A77

Preview Lab

Preview with #1B3601

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

Preview Lab → · Contrast checker → · Palette generator →