#101828#101828

#101828 is a very dark, muted blue. Relative luminance 0.009; OKLCH L 21.0% C 0.034 H 263.4°. Best body text is #FFFFFF at 17.75:1 contrast (WCAG AA passes).

Color values

HEX	#101828
RGB	rgb(16, 24, 40)
HSL	hsl(220, 43%, 11%)
HSV	hsv(220, 60%, 16%)
CMYK	cmyk(60%, 40%, 0%, 84.3%)
CIE-LAB	lab(8.28, 2.04, -12.08)
CIE-LCH	lch(8.28, 12.25, 279.60°)
OKLab	oklab(20.99% -0.0039 -0.0339)
OKLCH	oklch(20.99% 0.034 263.4)
XYZ	xyz(0.9232, 0.9166, 2.1353)
Luminance	0.0092 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101828 #282010

analogous

#102428 #101828 #141028

triadic

#101828 #281018 #182810

tetradic

#101828 #281024 #282010 #102814

square

#101828 #281024 #282010 #102814

split-complementary

#101828 #281410 #242810

monochromatic

#090D16 #090D16 #101828 #213254 #334C7F

Accessibility & contrast

On white

17.75

#101828 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#101828 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101828

17.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101828	#FFFFFF	#000000	##FFFFFF
##101828	1.00	17.75	1.18	17.75
#FFFFFF	17.75	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#121929

Deuteranopia (green-blind)

#0F1728

Tritanopia (blue-blind)

#071B1E

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #101828;
/* rgb */ color: rgb(16, 24, 40);
/* oklch */ color: oklch(21.0% 0.034 263.4);

Tailwind

colors: {
  custom: {
    50: '#505462',
    500: '#101828',
    950: '#000000',
  },
}

SCSS

$custom: #101828;
$custom-light: #505462;
$custom-dark: #000000;

JSON

{
  "hex": "#101828",
  "rgb": {
    "r": 16,
    "g": 24,
    "b": 40
  },
  "hsl": {
    "h": 220,
    "s": 42.857,
    "l": 10.98
  },
  "oklch": {
    "l": 0.20991,
    "c": 0.03413,
    "h": 263.4
  },
  "luminance": 0.00917
}

Semantic roles & 50–950 ramp

primary

#101828

secondary

#605134

accent

#A955D3

background

#F4F4F5

surface

#E7E7EA

border

#C3C3C6

text

#020205

muted

#787879

Preview Lab

Preview with #101828

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

Preview Lab → · Contrast checker → · Palette generator →