#101583#101583

#101583 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.1% C 0.174 H 268.1°. Best body text is #FFFFFF at 14.41:1 contrast (WCAG AA passes).

Color values

HEX	#101583
RGB	rgb(16, 21, 131)
HSL	hsl(237, 78%, 29%)
HSV	hsv(237, 88%, 51%)
CMYK	cmyk(87.8%, 84%, 0%, 48.6%)
CIE-LAB	lab(16.92, 40.03, -60.02)
CIE-LCH	lch(16.92, 72.14, 303.71°)
OKLab	oklab(30.1% -0.0056 -0.1738)
OKLCH	oklch(30.1% 0.174 268.1)
XYZ	xyz(4.5772, 2.2846, 21.6681)
Luminance	0.0228 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101583 #837E10

analogous

#104F83 #101583 #451083

triadic

#101583 #831015 #158310

tetradic

#101583 #83104F #837E10 #108345

square

#101583 #83104F #837E10 #108345

split-complementary

#101583 #834510 #4F8310

monochromatic

#03041B #090C4C #101583 #171EBA #2931E5

Accessibility & contrast

On white

14.41

#101583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#101583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101583

14.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101583	#FFFFFF	#000000	##FFFFFF
##101583	1.00	14.41	1.46	14.41
#FFFFFF	14.41	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003086

Deuteranopia (green-blind)

#002481

Tritanopia (blue-blind)

#00384D

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #101583;
/* rgb */ color: rgb(16, 21, 131);
/* oklch */ color: oklch(30.1% 0.174 268.1);

Tailwind

colors: {
  custom: {
    50: '#6955a8',
    500: '#101583',
    950: '#000000',
  },
}

SCSS

$custom: #101583;
$custom-light: #6955a8;
$custom-dark: #000000;

JSON

{
  "hex": "#101583",
  "rgb": {
    "r": 16,
    "g": 21,
    "b": 131
  },
  "hsl": {
    "h": 237.391,
    "s": 78.231,
    "l": 28.824
  },
  "oklch": {
    "l": 0.30101,
    "c": 0.17393,
    "h": 268.1
  },
  "luminance": 0.02285
}

Semantic roles & 50–950 ramp

primary

#101583

secondary

#B9B336

accent

#EC33F5

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#080310

muted

#7A787F

Preview Lab

Preview with #101583

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

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