#101523#101523

#101523 is a very dark, muted blue. Relative luminance 0.008; OKLCH L 19.8% C 0.029 H 268.6°. Best body text is #FFFFFF at 18.20:1 contrast (WCAG AA passes).

Color values

HEX	#101523
RGB	rgb(16, 21, 35)
HSL	hsl(224, 37%, 10%)
HSV	hsv(224, 54%, 14%)
CMYK	cmyk(54.3%, 40%, 0%, 86.3%)
CIE-LAB	lab(6.94, 2.27, -10.41)
CIE-LCH	lch(6.94, 10.65, 282.28°)
OKLab	oklab(19.81% -0.0007 -0.0293)
OKLCH	oklch(19.81% 0.029 268.6)
XYZ	xyz(0.7851, 0.7678, 1.6966)
Luminance	0.0077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101523 #231E10

analogous

#101E23 #101523 #151023

triadic

#101523 #231015 #152310

tetradic

#101523 #23101E #231E10 #102315

square

#101523 #23101E #231E10 #102315

split-complementary

#101523 #231510 #1E2310

monochromatic

#0A0D15 #0A0D15 #101523 #232E4D #364777

Accessibility & contrast

On white

18.20

#101523 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#101523 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101523

18.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101523	#FFFFFF	#000000	##FFFFFF
##101523	1.00	18.20	1.15	18.20
#FFFFFF	18.20	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#101624

Deuteranopia (green-blind)

#0E1523

Tritanopia (blue-blind)

#0A181A

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #101523;
/* rgb */ color: rgb(16, 21, 35);
/* oklch */ color: oklch(19.8% 0.029 268.6);

Tailwind

colors: {
  custom: {
    50: '#4f525d',
    500: '#101523',
    950: '#000000',
  },
}

SCSS

$custom: #101523;
$custom-light: #4f525d;
$custom-dark: #000000;

JSON

{
  "hex": "#101523",
  "rgb": {
    "r": 16,
    "g": 21,
    "b": 35
  },
  "hsl": {
    "h": 224.211,
    "s": 37.255,
    "l": 10
  },
  "oklch": {
    "l": 0.19811,
    "c": 0.02936,
    "h": 268.6
  },
  "luminance": 0.00768
}

Semantic roles & 50–950 ramp

primary

#101523

secondary

#5A5035

accent

#AF5BCD

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#020204

muted

#787879

Preview Lab

Preview with #101523

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

Preview Lab → · Contrast checker → · Palette generator →