#101800#101800

#101800 is a very dark, muted yellow-green. Relative luminance 0.008; OKLCH L 19.4% C 0.048 H 124.3°. Best body text is #FFFFFF at 18.22:1 contrast (WCAG AA passes).

Color values

HEX	#101800
RGB	rgb(16, 24, 0)
HSL	hsl(80, 100%, 5%)
HSV	hsv(80, 100%, 9%)
CMYK	cmyk(33.3%, 0%, 100%, 90.6%)
CIE-LAB	lab(6.90, -7.59, 10.19)
CIE-LCH	lch(6.90, 12.71, 126.69°)
OKLab	oklab(19.38% -0.0272 0.0399)
OKLCH	oklch(19.38% 0.048 124.3)
XYZ	xyz(0.5403, 0.7634, 0.1189)
Luminance	0.0076 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101800 #080018

analogous

#181400 #101800 #041800

triadic

#101800 #001018 #180010

tetradic

#101800 #001814 #080018 #180004

square

#101800 #001814 #080018 #180004

split-complementary

#101800 #000418 #140018

monochromatic

#141F00 #141F00 #141F00 #395500 #629200

Accessibility & contrast

On white

18.22

#101800 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#101800 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101800

18.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101800	#FFFFFF	#000000	##FFFFFF
##101800	1.00	18.22	1.15	18.22
#FFFFFF	18.22	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A1600

Deuteranopia (green-blind)

#191501

Tritanopia (blue-blind)

#111613

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #101800;
/* rgb */ color: rgb(16, 24, 0);
/* oklch */ color: oklch(19.4% 0.048 124.3);

Tailwind

colors: {
  custom: {
    50: '#4e5446',
    500: '#101800',
    950: '#000000',
  },
}

SCSS

$custom: #101800;
$custom-light: #4e5446;
$custom-dark: #000000;

JSON

{
  "hex": "#101800",
  "rgb": {
    "r": 16,
    "g": 24,
    "b": 0
  },
  "hsl": {
    "h": 80,
    "s": 100,
    "l": 4.706
  },
  "oklch": {
    "l": 0.1938,
    "c": 0.0483,
    "h": 124.3
  },
  "luminance": 0.00763
}

Semantic roles & 50–950 ramp

primary

#101800

secondary

#2C1162

accent

#29FF70

background

#F4F4F3

surface

#E7E7E5

border

#C3C3C1

text

#010200

muted

#777877

Preview Lab

Preview with #101800

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

Preview Lab → · Contrast checker → · Palette generator →