#171B01#171B01

#171B01 is a very dark, muted yellow. Relative luminance 0.010; OKLCH L 21.1% C 0.047 H 117.2°. Best body text is #FFFFFF at 17.59:1 contrast (WCAG AA passes).

Color values

HEX	#171B01
RGB	rgb(23, 27, 1)
HSL	hsl(69, 93%, 5%)
HSV	hsv(69, 96%, 11%)
CMYK	cmyk(14.8%, 0%, 96.3%, 89.4%)
CIE-LAB	lab(8.72, -6.85, 12.52)
CIE-LCH	lch(8.72, 14.27, 118.66°)
OKLab	oklab(21.08% -0.0213 0.0414)
OKLCH	oklch(21.08% 0.047 117.2)
XYZ	xyz(0.7508, 0.9682, 0.1760)
Luminance	0.0097 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B01 #05011B

analogous

#1B1201 #171B01 #0A1B01

triadic

#171B01 #01171B #1B0117

tetradic

#171B01 #011B12 #05011B #1B010A

square

#171B01 #011B12 #05011B #1B010A

split-complementary

#171B01 #010A1B #12011B

monochromatic

#191E01 #191E01 #191E01 #495603 #7C9105

Accessibility & contrast

On white

17.59

#171B01 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#171B01 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B01

17.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B01	#FFFFFF	#000000	##FFFFFF
##171B01	1.00	17.59	1.19	17.59
#FFFFFF	17.59	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E1900

Deuteranopia (green-blind)

#1D1902

Tritanopia (blue-blind)

#191915

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #171b01;
/* rgb */ color: rgb(23, 27, 1);
/* oklch */ color: oklch(21.1% 0.047 117.2);

Tailwind

colors: {
  custom: {
    50: '#535747',
    500: '#171b01',
    950: '#000000',
  },
}

SCSS

$custom: #171b01;
$custom-light: #535747;
$custom-dark: #000000;

JSON

{
  "hex": "#171b01",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 1
  },
  "hsl": {
    "h": 69.231,
    "s": 92.857,
    "l": 5.49
  },
  "oklch": {
    "l": 0.21075,
    "c": 0.04655,
    "h": 117.2
  },
  "luminance": 0.00968
}

Semantic roles & 50–950 ramp

primary

#171B01

secondary

#211563

accent

#29FF4A

background

#F4F5F3

surface

#E7E9E5

border

#C3C5C1

text

#020300

muted

#787877

Preview Lab

Preview with #171B01

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

Preview Lab → · Contrast checker → · Palette generator →