#100A38#100A38

#100A38 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 19.1% C 0.084 H 280.7°. Best body text is #FFFFFF at 18.71:1 contrast (WCAG AA passes).

Color values

HEX	#100A38
RGB	rgb(16, 10, 56)
HSL	hsl(248, 70%, 13%)
HSV	hsv(248, 82%, 22%)
CMYK	cmyk(71.4%, 82.1%, 0%, 78%)
CIE-LAB	lab(5.53, 18.03, -28.26)
CIE-LCH	lch(5.53, 33.52, 302.55°)
OKLab	oklab(19.13% 0.0157 -0.083)
OKLCH	oklch(19.13% 0.084 280.7)
XYZ	xyz(1.0358, 0.6127, 3.8043)
Luminance	0.0061 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100A38 #32380A

analogous

#0A1B38 #100A38 #270A38

triadic

#100A38 #38100A #0A3810

tetradic

#100A38 #380A1B #32380A #0A3827

square

#100A38 #380A1B #32380A #0A3827

split-complementary

#100A38 #38270A #1B380A

monochromatic

#07051A #07051A #100A38 #1F136C #2E1DA0

Accessibility & contrast

On white

18.71

#100A38 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#100A38 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100A38

18.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100A38	#FFFFFF	#000000	##FFFFFF
##100A38	1.00	18.71	1.12	18.71
#FFFFFF	18.71	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001439

Deuteranopia (green-blind)

#001037

Tritanopia (blue-blind)

#001620

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #100a38;
/* rgb */ color: rgb(16, 10, 56);
/* oklch */ color: oklch(19.1% 0.084 280.7);

Tailwind

colors: {
  custom: {
    50: '#544a6f',
    500: '#100a38',
    950: '#000000',
  },
}

SCSS

$custom: #100a38;
$custom-light: #544a6f;
$custom-dark: #000000;

JSON

{
  "hex": "#100a38",
  "rgb": {
    "r": 16,
    "g": 10,
    "b": 56
  },
  "hsl": {
    "h": 247.826,
    "s": 69.697,
    "l": 12.941
  },
  "oklch": {
    "l": 0.19133,
    "c": 0.08447,
    "h": 280.7
  },
  "luminance": 0.00613
}

Semantic roles & 50–950 ramp

primary

#100A38

secondary

#6B7528

accent

#ED3BD5

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030107

muted

#78777A

Preview Lab

Preview with #100A38

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

Preview Lab → · Contrast checker → · Palette generator →