#1F2801#1F2801

#1F2801 is a dark, moderate yellow-green. Relative luminance 0.018; OKLCH L 25.9% C 0.061 H 121.9°. Best body text is #FFFFFF at 15.42:1 contrast (WCAG AA passes).

Color values

HEX	#1F2801
RGB	rgb(31, 40, 1)
HSL	hsl(74, 95%, 8%)
HSV	hsv(74, 98%, 16%)
CMYK	cmyk(22.5%, 0%, 97.5%, 84.3%)
CIE-LAB	lab(14.46, -10.84, 20.53)
CIE-LCH	lch(14.46, 23.21, 117.83°)
OKLab	oklab(25.89% -0.0323 0.052)
OKLCH	oklch(25.89% 0.061 121.9)
XYZ	xyz(1.3294, 1.8111, 0.3082)
Luminance	0.0181 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Hunter Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2801 #0A0128

analogous

#281D01 #1F2801 #0B2801

triadic

#1F2801 #011F28 #28011F

tetradic

#1F2801 #01281D #0A0128 #28010B

square

#1F2801 #01281D #0A0128 #28010B

split-complementary

#1F2801 #010B28 #1D0128

monochromatic

#171E01 #171E01 #1F2801 #4D6402 #7C9F04

Accessibility & contrast

On white

15.42

#1F2801 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#1F2801 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2801

15.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2801	#FFFFFF	#000000	##FFFFFF
##1F2801	1.00	15.42	1.36	15.42
#FFFFFF	15.42	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B2500

Deuteranopia (green-blind)

#2A2503

Tritanopia (blue-blind)

#212521

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1f2801;
/* rgb */ color: rgb(31, 40, 1);
/* oklch */ color: oklch(25.9% 0.061 121.9);

Tailwind

colors: {
  custom: {
    50: '#5b6147',
    500: '#1f2801',
    950: '#000000',
  },
}

SCSS

$custom: #1f2801;
$custom-light: #5b6147;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2801",
  "rgb": {
    "r": 31,
    "g": 40,
    "b": 1
  },
  "hsl": {
    "h": 73.846,
    "s": 95.122,
    "l": 8.039
  },
  "oklch": {
    "l": 0.25894,
    "c": 0.06121,
    "h": 121.9
  },
  "luminance": 0.01811
}

Semantic roles & 50–950 ramp

primary

#1F2801

secondary

#2B166F

accent

#29FF5A

background

#F5F5F4

surface

#E9EAE6

border

#C5C6C2

text

#040500

muted

#797977

Preview Lab

Preview with #1F2801

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

Preview Lab → · Contrast checker → · Palette generator →