#101781#101781

#101781 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.1% C 0.170 H 268.1°. Best body text is #FFFFFF at 14.37:1 contrast (WCAG AA passes).

Color values

HEX	#101781
RGB	rgb(16, 23, 129)
HSL	hsl(236, 78%, 28%)
HSV	hsv(236, 88%, 51%)
CMYK	cmyk(87.6%, 82.2%, 0%, 49.4%)
CIE-LAB	lab(17.02, 38.28, -58.57)
CIE-LCH	lch(17.02, 69.97, 303.17°)
OKLab	oklab(30.1% -0.0056 -0.1697)
OKLCH	oklch(30.1% 0.17 268.1)
XYZ	xyz(4.4812, 2.3074, 20.9738)
Luminance	0.0231 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101781 #817A10

analogous

#104F81 #101781 #411081

triadic

#101781 #811017 #178110

tetradic

#101781 #81104F #817A10 #108141

square

#101781 #81104F #817A10 #108141

split-complementary

#101781 #814110 #4F8110

monochromatic

#03051B #090D4B #101781 #1721B7 #2733E4

Accessibility & contrast

On white

14.37

#101781 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#101781 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101781

14.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101781	#FFFFFF	#000000	##FFFFFF
##101781	1.00	14.37	1.46	14.37
#FFFFFF	14.37	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003084

Deuteranopia (green-blind)

#00247F

Tritanopia (blue-blind)

#00384C

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #101781;
/* rgb */ color: rgb(16, 23, 129);
/* oklch */ color: oklch(30.1% 0.170 268.1);

Tailwind

colors: {
  custom: {
    50: '#6856a7',
    500: '#101781',
    950: '#000000',
  },
}

SCSS

$custom: #101781;
$custom-light: #6856a7;
$custom-dark: #000000;

JSON

{
  "hex": "#101781",
  "rgb": {
    "r": 16,
    "g": 23,
    "b": 129
  },
  "hsl": {
    "h": 236.283,
    "s": 77.931,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30104,
    "c": 0.16978,
    "h": 268.1
  },
  "luminance": 0.02308
}

Semantic roles & 50–950 ramp

primary

#101781

secondary

#B7AF36

accent

#E833F4

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#080310

muted

#7A787F

Preview Lab

Preview with #101781

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

Preview Lab → · Contrast checker → · Palette generator →