#101728#101728

#101728 is a very dark, muted blue. Relative luminance 0.009; OKLCH L 20.7% C 0.036 H 266.3°. Best body text is #FFFFFF at 17.87:1 contrast (WCAG AA passes).

Color values

HEX	#101728
RGB	rgb(16, 23, 40)
HSL	hsl(223, 43%, 11%)
HSV	hsv(223, 60%, 16%)
CMYK	cmyk(60%, 42.5%, 0%, 84.3%)
CIE-LAB	lab(7.91, 2.82, -12.65)
CIE-LCH	lch(7.91, 12.96, 282.58°)
OKLab	oklab(20.71% -0.0023 -0.0356)
OKLCH	oklch(20.71% 0.036 266.3)
XYZ	xyz(0.9030, 0.8761, 2.1286)
Luminance	0.0088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101728 #282110

analogous

#102328 #101728 #151028

triadic

#101728 #281017 #172810

tetradic

#101728 #281023 #282110 #102815

square

#101728 #281023 #282110 #102815

split-complementary

#101728 #281510 #232810

monochromatic

#090D16 #090D16 #101728 #213054 #33497F

Accessibility & contrast

On white

17.87

#101728 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#101728 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101728

17.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101728	#FFFFFF	#000000	##FFFFFF
##101728	1.00	17.87	1.18	17.87
#FFFFFF	17.87	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#111929

Deuteranopia (green-blind)

#0E1628

Tritanopia (blue-blind)

#071B1D

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #101728;
/* rgb */ color: rgb(16, 23, 40);
/* oklch */ color: oklch(20.7% 0.036 266.3);

Tailwind

colors: {
  custom: {
    50: '#505362',
    500: '#101728',
    950: '#000000',
  },
}

SCSS

$custom: #101728;
$custom-light: #505362;
$custom-dark: #000000;

JSON

{
  "hex": "#101728",
  "rgb": {
    "r": 16,
    "g": 23,
    "b": 40
  },
  "hsl": {
    "h": 222.5,
    "s": 42.857,
    "l": 10.98
  },
  "oklch": {
    "l": 0.20709,
    "c": 0.03564,
    "h": 266.3
  },
  "luminance": 0.00876
}

Semantic roles & 50–950 ramp

primary

#101728

secondary

#605334

accent

#AE55D3

background

#F4F4F5

surface

#E7E7EA

border

#C3C3C6

text

#020205

muted

#787879

Preview Lab

Preview with #101728

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

Preview Lab → · Contrast checker → · Palette generator →