#1F2B01#1F2B01

#1F2B01 is a dark, moderate yellow-green. Relative luminance 0.020; OKLCH L 26.8% C 0.066 H 124.5°. Best body text is #FFFFFF at 14.96:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B01
RGB	rgb(31, 43, 1)
HSL	hsl(77, 95%, 9%)
HSV	hsv(77, 98%, 17%)
CMYK	cmyk(27.9%, 0%, 97.7%, 83.1%)
CIE-LAB	lab(15.60, -12.64, 21.98)
CIE-LCH	lch(15.60, 25.36, 119.89°)
OKLab	oklab(26.81% -0.0372 0.054)
OKLCH	oklch(26.81% 0.066 124.5)
XYZ	xyz(1.4344, 2.0212, 0.3433)
Luminance	0.0202 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Hunter Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B01 #0D012B

analogous

#2B2201 #1F2B01 #0A2B01

triadic

#1F2B01 #011F2B #2B011F

tetradic

#1F2B01 #012B22 #0D012B #2B010A

square

#1F2B01 #012B22 #0D012B #2B010A

split-complementary

#1F2B01 #010A2B #22012B

monochromatic

#161E01 #161E01 #1F2B01 #4A6702 #75A304

Accessibility & contrast

On white

14.96

#1F2B01 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#1F2B01 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B01

14.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B01	#FFFFFF	#000000	##FFFFFF
##1F2B01	1.00	14.96	1.40	14.96
#FFFFFF	14.96	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	14.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E2700

Deuteranopia (green-blind)

#2D2704

Tritanopia (blue-blind)

#212823

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1f2b01;
/* rgb */ color: rgb(31, 43, 1);
/* oklch */ color: oklch(26.8% 0.066 124.5);

Tailwind

colors: {
  custom: {
    50: '#5c6447',
    500: '#1f2b01',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b01;
$custom-light: #5c6447;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b01",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 1
  },
  "hsl": {
    "h": 77.143,
    "s": 95.455,
    "l": 8.627
  },
  "oklch": {
    "l": 0.26813,
    "c": 0.06557,
    "h": 124.5
  },
  "luminance": 0.02021
}

Semantic roles & 50–950 ramp

primary

#1F2B01

secondary

#301771

accent

#29FF66

background

#F5F5F4

surface

#E9EAE6

border

#C5C6C2

text

#040500

muted

#797977

Preview Lab

Preview with #1F2B01

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

Preview Lab → · Contrast checker → · Palette generator →