#100D3C#100D3C

#100D3C is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 20.1% C 0.086 H 278.1°. Best body text is #FFFFFF at 18.34:1 contrast (WCAG AA passes).

Color values

HEX	#100D3C
RGB	rgb(16, 13, 60)
HSL	hsl(244, 64%, 14%)
HSV	hsv(244, 78%, 24%)
CMYK	cmyk(73.3%, 78.3%, 0%, 76.5%)
CIE-LAB	lab(6.54, 18.38, -29.52)
CIE-LCH	lch(6.54, 34.77, 301.92°)
OKLab	oklab(20.14% 0.0122 -0.0856)
OKLCH	oklch(20.14% 0.087 278.1)
XYZ	xyz(1.1730, 0.7242, 4.3521)
Luminance	0.0072 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D3C #393C0D

analogous

#0D223C #100D3C #280D3C

triadic

#100D3C #3C100D #0D3C10

tetradic

#100D3C #3C0D22 #393C0D #0D3C28

square

#100D3C #3C0D22 #393C0D #0D3C28

split-complementary

#100D3C #3C280D #223C0D

monochromatic

#070519 #070519 #100D3C #1D186E #2B23A1

Accessibility & contrast

On white

18.34

#100D3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#100D3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D3C

18.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D3C	#FFFFFF	#000000	##FFFFFF
##100D3C	1.00	18.34	1.14	18.34
#FFFFFF	18.34	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00163D

Deuteranopia (green-blind)

#00133B

Tritanopia (blue-blind)

#001923

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #100d3c;
/* rgb */ color: rgb(16, 13, 60);
/* oklch */ color: oklch(20.1% 0.086 278.1);

Tailwind

colors: {
  custom: {
    50: '#554c72',
    500: '#100d3c',
    950: '#000000',
  },
}

SCSS

$custom: #100d3c;
$custom-light: #554c72;
$custom-dark: #000000;

JSON

{
  "hex": "#100d3c",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 60
  },
  "hsl": {
    "h": 243.83,
    "s": 64.384,
    "l": 14.314
  },
  "oklch": {
    "l": 0.20141,
    "c": 0.0865,
    "h": 278.1
  },
  "luminance": 0.00724
}

Semantic roles & 50–950 ramp

primary

#100D3C

secondary

#73782D

accent

#E740DD

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030108

muted

#78777B

Preview Lab

Preview with #100D3C

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

Preview Lab → · Contrast checker → · Palette generator →