#101019#101019

#101019 is a very dark, near-neutral blue. Relative luminance 0.006; OKLCH L 17.8% C 0.018 H 284.4°. Best body text is #FFFFFF at 18.92:1 contrast (WCAG AA passes).

Color values

HEX	#101019
RGB	rgb(16, 16, 25)
HSL	hsl(240, 22%, 8%)
HSV	hsv(240, 36%, 10%)
CMYK	cmyk(36%, 36%, 0%, 90.2%)
CIE-LAB	lab(4.98, 2.08, -5.66)
CIE-LCH	lch(4.98, 6.03, 290.19°)
OKLab	oklab(17.77% 0.0046 -0.0179)
OKLCH	oklch(17.77% 0.018 284.4)
XYZ	xyz(0.5744, 0.5509, 0.9956)
Luminance	0.0055 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101019 #191910

analogous

#101419 #101019 #141019

triadic

#101019 #191010 #101910

tetradic

#101019 #191014 #191910 #101914

square

#101019 #191014 #191910 #101914

split-complementary

#101019 #191410 #141910

monochromatic

#0C0C13 #0C0C13 #101019 #28283E #404064

Accessibility & contrast

On white

18.92

#101019 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#101019 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101019

18.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101019	#FFFFFF	#000000	##FFFFFF
##101019	1.00	18.92	1.11	18.92
#FFFFFF	18.92	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E1119

Deuteranopia (green-blind)

#0D1119

Tritanopia (blue-blind)

#0E1213

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #101019;
/* rgb */ color: rgb(16, 16, 25);
/* oklch */ color: oklch(17.8% 0.018 284.4);

Tailwind

colors: {
  custom: {
    50: '#4e4e55',
    500: '#101019',
    950: '#000000',
  },
}

SCSS

$custom: #101019;
$custom-light: #4e4e55;
$custom-dark: #000000;

JSON

{
  "hex": "#101019",
  "rgb": {
    "r": 16,
    "g": 16,
    "b": 25
  },
  "hsl": {
    "h": 240,
    "s": 21.951,
    "l": 8.039
  },
  "oklch": {
    "l": 0.17765,
    "c": 0.01847,
    "h": 284.4
  },
  "luminance": 0.00551
}

Semantic roles & 50–950 ramp

primary

#101019

secondary

#4D4D38

accent

#BE69BE

background

#F4F4F4

surface

#E7E7E7

border

#C3C3C3

text

#010103

muted

#777778

Preview Lab

Preview with #101019

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

Preview Lab → · Contrast checker → · Palette generator →