#100D3A#100D3A

#100D3A is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.9% C 0.083 H 278.6°. Best body text is #FFFFFF at 18.41:1 contrast (WCAG AA passes).

Color values

HEX	#100D3A
RGB	rgb(16, 13, 58)
HSL	hsl(244, 63%, 14%)
HSV	hsv(244, 78%, 23%)
CMYK	cmyk(72.4%, 77.6%, 0%, 77.3%)
CIE-LAB	lab(6.35, 17.46, -28.38)
CIE-LCH	lch(6.35, 33.32, 301.61°)
OKLab	oklab(19.92% 0.0125 -0.0824)
OKLCH	oklch(19.92% 0.083 278.6)
XYZ	xyz(1.1211, 0.7034, 4.0789)
Luminance	0.0070 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D3A #373A0D

analogous

#0D213A #100D3A #270D3A

triadic

#100D3A #3A100D #0D3A10

tetradic

#100D3A #3A0D21 #373A0D #0D3A27

square

#100D3A #3A0D21 #373A0D #0D3A27

split-complementary

#100D3A #3A270D #213A0D

monochromatic

#070619 #070619 #100D3A #1E186C #2C239E

Accessibility & contrast

On white

18.41

#100D3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#100D3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D3A

18.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D3A	#FFFFFF	#000000	##FFFFFF
##100D3A	1.00	18.41	1.14	18.41
#FFFFFF	18.41	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00163B

Deuteranopia (green-blind)

#001239

Tritanopia (blue-blind)

#001922

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #100d3a;
/* rgb */ color: rgb(16, 13, 58);
/* oklch */ color: oklch(19.9% 0.083 278.6);

Tailwind

colors: {
  custom: {
    50: '#544c71',
    500: '#100d3a',
    950: '#000000',
  },
}

SCSS

$custom: #100d3a;
$custom-light: #544c71;
$custom-dark: #000000;

JSON

{
  "hex": "#100d3a",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 58
  },
  "hsl": {
    "h": 244,
    "s": 63.38,
    "l": 13.922
  },
  "oklch": {
    "l": 0.19919,
    "c": 0.08339,
    "h": 278.6
  },
  "luminance": 0.00703
}

Semantic roles & 50–950 ramp

primary

#100D3A

secondary

#71762D

accent

#E641DB

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030107

muted

#78777A

Preview Lab

Preview with #100D3A

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

Preview Lab → · Contrast checker → · Palette generator →