#101023#101023

#101023 is a very dark, muted blue. Relative luminance 0.006; OKLCH L 18.4% C 0.038 H 282.0°. Best body text is #FFFFFF at 18.74:1 contrast (WCAG AA passes).

Color values

HEX	#101023
RGB	rgb(16, 16, 35)
HSL	hsl(240, 37%, 10%)
HSV	hsv(240, 54%, 14%)
CMYK	cmyk(54.3%, 54.3%, 0%, 86.3%)
CIE-LAB	lab(5.44, 5.33, -12.72)
CIE-LCH	lch(5.44, 13.79, 292.72°)
OKLab	oklab(18.44% 0.008 -0.0375)
OKLCH	oklch(18.44% 0.038 282)
XYZ	xyz(0.7023, 0.6021, 1.6690)
Luminance	0.0060 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101023 #232310

analogous

#101923 #101023 #191023

triadic

#101023 #231010 #102310

tetradic

#101023 #23101A #232310 #10231A

square

#101023 #23101A #232310 #10231A

split-complementary

#101023 #231A10 #1A2310

monochromatic

#0A0A15 #0A0A15 #101023 #23234D #363677

Accessibility & contrast

On white

18.74

#101023 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#101023 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101023

18.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101023	#FFFFFF	#000000	##FFFFFF
##101023	1.00	18.74	1.12	18.74
#FFFFFF	18.74	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#091324

Deuteranopia (green-blind)

#081123

Tritanopia (blue-blind)

#0A1417

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #101023;
/* rgb */ color: rgb(16, 16, 35);
/* oklch */ color: oklch(18.4% 0.038 282.0);

Tailwind

colors: {
  custom: {
    50: '#4f4e5e',
    500: '#101023',
    950: '#000000',
  },
}

SCSS

$custom: #101023;
$custom-light: #4f4e5e;
$custom-dark: #000000;

JSON

{
  "hex": "#101023",
  "rgb": {
    "r": 16,
    "g": 16,
    "b": 35
  },
  "hsl": {
    "h": 240,
    "s": 37.255,
    "l": 10
  },
  "oklch": {
    "l": 0.1844,
    "c": 0.03833,
    "h": 282
  },
  "luminance": 0.00602
}

Semantic roles & 50–950 ramp

primary

#101023

secondary

#5A5A35

accent

#CD5BCD

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#020104

muted

#787779

Preview Lab

Preview with #101023

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

Preview Lab → · Contrast checker → · Palette generator →