#101638#101638

#101638 is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.7% C 0.066 H 272.2°. Best body text is #FFFFFF at 17.59:1 contrast (WCAG AA passes).

Color values

HEX	#101638
RGB	rgb(16, 22, 56)
HSL	hsl(231, 56%, 14%)
HSV	hsv(231, 71%, 22%)
CMYK	cmyk(71.4%, 60.7%, 0%, 78%)
CIE-LAB	lab(8.73, 10.27, -23.08)
CIE-LCH	lch(8.73, 25.26, 293.99°)
OKLab	oklab(21.71% 0.0026 -0.0661)
OKLCH	oklch(21.71% 0.066 272.2)
XYZ	xyz(1.2142, 0.9694, 3.8637)
Luminance	0.0097 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101638 #383210

analogous

#102A38 #101638 #1E1038

triadic

#101638 #381016 #163810

tetradic

#101638 #38102A #383210 #10381E

square

#101638 #38102A #383210 #10381E

split-complementary

#101638 #381E10 #2A3810

monochromatic

#070918 #070918 #101638 #1E2968 #2B3B97

Accessibility & contrast

On white

17.59

#101638 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#101638 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101638

17.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101638	#FFFFFF	#000000	##FFFFFF
##101638	1.00	17.59	1.19	17.59
#FFFFFF	17.59	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#041B39

Deuteranopia (green-blind)

#001737

Tritanopia (blue-blind)

#001E24

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #101638;
/* rgb */ color: rgb(16, 22, 56);
/* oklch */ color: oklch(21.7% 0.066 272.2);

Tailwind

colors: {
  custom: {
    50: '#53526f',
    500: '#101638',
    950: '#000000',
  },
}

SCSS

$custom: #101638;
$custom-light: #53526f;
$custom-dark: #000000;

JSON

{
  "hex": "#101638",
  "rgb": {
    "r": 16,
    "g": 22,
    "b": 56
  },
  "hsl": {
    "h": 231,
    "s": 55.556,
    "l": 14.118
  },
  "oklch": {
    "l": 0.21713,
    "c": 0.06619,
    "h": 272.2
  },
  "luminance": 0.0097
}

Semantic roles & 50–950 ramp

primary

#101638

secondary

#726832

accent

#C849DF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#030207

muted

#78787A

Preview Lab

Preview with #101638

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

Preview Lab → · Contrast checker → · Palette generator →