#101528#101528

#101528 is a very dark, muted blue. Relative luminance 0.008; OKLCH L 20.2% C 0.039 H 271.4°. Best body text is #FFFFFF at 18.10:1 contrast (WCAG AA passes).

Color values

HEX	#101528
RGB	rgb(16, 21, 40)
HSL	hsl(228, 43%, 11%)
HSV	hsv(228, 60%, 16%)
CMYK	cmyk(60%, 47.5%, 0%, 84.3%)
CIE-LAB	lab(7.22, 4.28, -13.73)
CIE-LCH	lch(7.22, 14.38, 287.32°)
OKLab	oklab(20.16% 0.0009 -0.0389)
OKLCH	oklch(20.16% 0.039 271.4)
XYZ	xyz(0.8647, 0.7996, 2.1159)
Luminance	0.0080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101528 #282310

analogous

#102128 #101528 #171028

triadic

#101528 #281015 #152810

tetradic

#101528 #281021 #282310 #102817

square

#101528 #281021 #282310 #102817

split-complementary

#101528 #281710 #212810

monochromatic

#090B16 #090B16 #101528 #212C54 #33437F

Accessibility & contrast

On white

18.10

#101528 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#101528 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101528

18.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101528	#FFFFFF	#000000	##FFFFFF
##101528	1.00	18.10	1.16	18.10
#FFFFFF	18.10	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E1729

Deuteranopia (green-blind)

#0C1528

Tritanopia (blue-blind)

#07191C

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #101528;
/* rgb */ color: rgb(16, 21, 40);
/* oklch */ color: oklch(20.2% 0.039 271.4);

Tailwind

colors: {
  custom: {
    50: '#505262',
    500: '#101528',
    950: '#000000',
  },
}

SCSS

$custom: #101528;
$custom-light: #505262;
$custom-dark: #000000;

JSON

{
  "hex": "#101528",
  "rgb": {
    "r": 16,
    "g": 21,
    "b": 40
  },
  "hsl": {
    "h": 227.5,
    "s": 42.857,
    "l": 10.98
  },
  "oklch": {
    "l": 0.20155,
    "c": 0.03887,
    "h": 271.4
  },
  "luminance": 0.008
}

Semantic roles & 50–950 ramp

primary

#101528

secondary

#605734

accent

#B855D3

background

#F4F4F5

surface

#E7E7EA

border

#C3C3C6

text

#020205

muted

#787879

Preview Lab

Preview with #101528

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

Preview Lab → · Contrast checker → · Palette generator →