#101738#101738

#101738 is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.0% C 0.065 H 271.2°. Best body text is #FFFFFF at 17.48:1 contrast (WCAG AA passes).

Color values

HEX	#101738
RGB	rgb(16, 23, 56)
HSL	hsl(230, 56%, 14%)
HSV	hsv(230, 71%, 22%)
CMYK	cmyk(71.4%, 58.9%, 0%, 78%)
CIE-LAB	lab(9.06, 9.48, -22.55)
CIE-LCH	lch(9.06, 24.46, 292.81°)
OKLab	oklab(21.96% 0.0013 -0.0646)
OKLCH	oklch(21.96% 0.065 271.2)
XYZ	xyz(1.2337, 1.0084, 3.8702)
Luminance	0.0101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101738 #383110

analogous

#102B38 #101738 #1D1038

triadic

#101738 #381017 #173810

tetradic

#101738 #38102B #383110 #10381D

square

#101738 #38102B #383110 #10381D

split-complementary

#101738 #381D10 #2B3810

monochromatic

#070A18 #070A18 #101738 #1E2B68 #2B3E97

Accessibility & contrast

On white

17.48

#101738 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#101738 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101738

17.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101738	#FFFFFF	#000000	##FFFFFF
##101738	1.00	17.48	1.20	17.48
#FFFFFF	17.48	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#061B39

Deuteranopia (green-blind)

#011837

Tritanopia (blue-blind)

#001F24

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #101738;
/* rgb */ color: rgb(16, 23, 56);
/* oklch */ color: oklch(22.0% 0.065 271.2);

Tailwind

colors: {
  custom: {
    50: '#53536f',
    500: '#101738',
    950: '#000000',
  },
}

SCSS

$custom: #101738;
$custom-light: #53536f;
$custom-dark: #000000;

JSON

{
  "hex": "#101738",
  "rgb": {
    "r": 16,
    "g": 23,
    "b": 56
  },
  "hsl": {
    "h": 229.5,
    "s": 55.556,
    "l": 14.118
  },
  "oklch": {
    "l": 0.2196,
    "c": 0.06458,
    "h": 271.2
  },
  "luminance": 0.01008
}

Semantic roles & 50–950 ramp

primary

#101738

secondary

#726732

accent

#C549DF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#030207

muted

#78787A

Preview Lab

Preview with #101738

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

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