#101548#101548

#101548 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.1% C 0.094 H 272.3°. Best body text is #FFFFFF at 17.17:1 contrast (WCAG AA passes).

Color values

HEX	#101548
RGB	rgb(16, 21, 72)
HSL	hsl(235, 64%, 17%)
HSV	hsv(235, 78%, 28%)
CMYK	cmyk(77.8%, 70.8%, 0%, 71.8%)
CIE-LAB	lab(9.91, 17.82, -32.51)
CIE-LCH	lch(9.91, 37.08, 298.73°)
OKLab	oklab(23.05% 0.0037 -0.0939)
OKLCH	oklch(23.05% 0.094 272.3)
XYZ	xyz(1.6512, 1.1142, 6.2577)
Luminance	0.0111 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101548 #484310

analogous

#103148 #101548 #271048

triadic

#101548 #481015 #154810

tetradic

#101548 #481031 #484310 #104827

square

#101548 #481031 #484310 #104827

split-complementary

#101548 #482710 #314810

monochromatic

#060719 #060719 #101548 #1B247A #2632AC

Accessibility & contrast

On white

17.17

#101548 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#101548 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101548

17.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101548	#FFFFFF	#000000	##FFFFFF
##101548	1.00	17.17	1.22	17.17
#FFFFFF	17.17	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E4A

Deuteranopia (green-blind)

#001947

Tritanopia (blue-blind)

#00222C

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #101548;
/* rgb */ color: rgb(16, 21, 72);
/* oklch */ color: oklch(23.1% 0.094 272.3);

Tailwind

colors: {
  custom: {
    50: '#58527c',
    500: '#101548',
    950: '#000000',
  },
}

SCSS

$custom: #101548;
$custom-light: #58527c;
$custom-dark: #000000;

JSON

{
  "hex": "#101548",
  "rgb": {
    "r": 16,
    "g": 21,
    "b": 72
  },
  "hsl": {
    "h": 234.643,
    "s": 63.636,
    "l": 17.255
  },
  "oklch": {
    "l": 0.23051,
    "c": 0.09394,
    "h": 272.3
  },
  "luminance": 0.01114
}

Semantic roles & 50–950 ramp

primary

#101548

secondary

#827B32

accent

#D841E7

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#040209

muted

#79787B

Preview Lab

Preview with #101548

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

Preview Lab → · Contrast checker → · Palette generator →