#101D3A#101D3A

#101D3A is a very dark, muted blue. Relative luminance 0.013; OKLCH L 23.7% C 0.059 H 264.2°. Best body text is #FFFFFF at 16.68:1 contrast (WCAG AA passes).

Color values

HEX	#101D3A
RGB	rgb(16, 29, 58)
HSL	hsl(221, 57%, 15%)
HSV	hsv(221, 72%, 23%)
CMYK	cmyk(72.4%, 50%, 0%, 77.3%)
CIE-LAB	lab(11.24, 5.65, -20.50)
CIE-LCH	lch(11.24, 21.26, 285.41°)
OKLab	oklab(23.67% -0.0059 -0.0584)
OKLCH	oklch(23.67% 0.059 264.2)
XYZ	xyz(1.4165, 1.2943, 4.1773)
Luminance	0.0129 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D3A #3A2D10

analogous

#10323A #101D3A #18103A

triadic

#101D3A #3A101D #1D3A10

tetradic

#101D3A #3A1032 #3A2D10 #103A18

square

#101D3A #3A1032 #3A2D10 #103A18

split-complementary

#101D3A #3A1810 #323A10

monochromatic

#070C18 #070C18 #101D3A #1D356A #2A4D9A

Accessibility & contrast

On white

16.68

#101D3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#101D3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D3A

16.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D3A	#FFFFFF	#000000	##FFFFFF
##101D3A	1.00	16.68	1.26	16.68
#FFFFFF	16.68	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10203B

Deuteranopia (green-blind)

#091C39

Tritanopia (blue-blind)

#002428

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #101d3a;
/* rgb */ color: rgb(16, 29, 58);
/* oklch */ color: oklch(23.7% 0.059 264.2);

Tailwind

colors: {
  custom: {
    50: '#535870',
    500: '#101d3a',
    950: '#000000',
  },
}

SCSS

$custom: #101d3a;
$custom-light: #535870;
$custom-dark: #000000;

JSON

{
  "hex": "#101d3a",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 58
  },
  "hsl": {
    "h": 221.429,
    "s": 56.757,
    "l": 14.51
  },
  "oklch": {
    "l": 0.23669,
    "c": 0.05874,
    "h": 264.2
  },
  "luminance": 0.01294
}

Semantic roles & 50–950 ramp

primary

#101D3A

secondary

#745F32

accent

#B148E0

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #101D3A

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

Preview Lab → · Contrast checker → · Palette generator →