#101566#101566

#101566 is a dark, vivid blue. Relative luminance 0.016; OKLCH L 26.5% C 0.137 H 269.9°. Best body text is #FFFFFF at 15.89:1 contrast (WCAG AA passes).

Color values

HEX	#101566
RGB	rgb(16, 21, 102)
HSL	hsl(237, 73%, 23%)
HSV	hsv(237, 84%, 40%)
CMYK	cmyk(84.3%, 79.4%, 0%, 60%)
CIE-LAB	lab(13.26, 29.73, -47.33)
CIE-LCH	lch(13.26, 55.89, 302.13°)
OKLab	oklab(26.48% -0.0002 -0.1371)
OKLCH	oklch(26.48% 0.137 269.9)
XYZ	xyz(2.8793, 1.6055, 12.7259)
Luminance	0.0161 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101566 #666110

analogous

#104066 #101566 #361066

triadic

#101566 #661015 #156610

tetradic

#101566 #661040 #666110 #106636

square

#101566 #661040 #666110 #106636

split-complementary

#101566 #663610 #406610

monochromatic

#04051A #080A31 #101566 #18209B #212BD0

Accessibility & contrast

On white

15.89

#101566 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#101566 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101566

15.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101566	#FFFFFF	#000000	##FFFFFF
##101566	1.00	15.89	1.32	15.89
#FFFFFF	15.89	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002668

Deuteranopia (green-blind)

#001E65

Tritanopia (blue-blind)

#002D3C

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #101566;
/* rgb */ color: rgb(16, 21, 102);
/* oklch */ color: oklch(26.5% 0.137 269.9);

Tailwind

colors: {
  custom: {
    50: '#615393',
    500: '#101566',
    950: '#000000',
  },
}

SCSS

$custom: #101566;
$custom-light: #615393;
$custom-dark: #000000;

JSON

{
  "hex": "#101566",
  "rgb": {
    "r": 16,
    "g": 21,
    "b": 102
  },
  "hsl": {
    "h": 236.512,
    "s": 72.881,
    "l": 23.137
  },
  "oklch": {
    "l": 0.26478,
    "c": 0.1371,
    "h": 269.9
  },
  "luminance": 0.01606
}

Semantic roles & 50–950 ramp

primary

#101566

secondary

#9E9833

accent

#E538F0

background

#F6F4F9

surface

#EBE7F1

border

#C6C3CB

text

#06020D

muted

#7A787E

Preview Lab

Preview with #101566

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

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