#1F2301#1F2301

#1F2301 is a very dark, muted yellow. Relative luminance 0.015; OKLCH L 24.4% C 0.054 H 116.0°. Best body text is #FFFFFF at 16.16:1 contrast (WCAG AA passes).

Color values

HEX	#1F2301
RGB	rgb(31, 35, 1)
HSL	hsl(67, 94%, 7%)
HSV	hsv(67, 97%, 14%)
CMYK	cmyk(11.4%, 0%, 97.1%, 86.3%)
CIE-LAB	lab(12.58, -7.69, 18.03)
CIE-LCH	lch(12.58, 19.60, 113.09°)
OKLab	oklab(24.38% -0.0237 0.0486)
OKLCH	oklch(24.38% 0.054 116)
XYZ	xyz(1.1716, 1.4956, 0.2557)
Luminance	0.0150 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Hunter Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2301 #050123

analogous

#231601 #1F2301 #0E2301

triadic

#1F2301 #011F23 #23011F

tetradic

#1F2301 #012316 #050123 #23010E

square

#1F2301 #012316 #050123 #23010E

split-complementary

#1F2301 #010E23 #160123

monochromatic

#1A1E01 #1A1E01 #1F2301 #545F03 #889A04

Accessibility & contrast

On white

16.16

#1F2301 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#1F2301 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2301

16.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2301	#FFFFFF	#000000	##FFFFFF
##1F2301	1.00	16.16	1.30	16.16
#FFFFFF	16.16	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#262000

Deuteranopia (green-blind)

#262103

Tritanopia (blue-blind)

#22201C

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #1f2301;
/* rgb */ color: rgb(31, 35, 1);
/* oklch */ color: oklch(24.4% 0.054 116.0);

Tailwind

colors: {
  custom: {
    50: '#5b5d47',
    500: '#1f2301',
    950: '#000000',
  },
}

SCSS

$custom: #1f2301;
$custom-light: #5b5d47;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2301",
  "rgb": {
    "r": 31,
    "g": 35,
    "b": 1
  },
  "hsl": {
    "h": 67.059,
    "s": 94.444,
    "l": 7.059
  },
  "oklch": {
    "l": 0.24376,
    "c": 0.05412,
    "h": 116
  },
  "luminance": 0.01496
}

Semantic roles & 50–950 ramp

primary

#1F2301

secondary

#20166A

accent

#29FF42

background

#F5F5F4

surface

#E9E9E6

border

#C5C5C2

text

#040400

muted

#797977

Preview Lab

Preview with #1F2301

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

Preview Lab → · Contrast checker → · Palette generator →