#100A42#100A42

#100A42 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 20.3% C 0.099 H 277.7°. Best body text is #FFFFFF at 18.35:1 contrast (WCAG AA passes).

Color values

HEX	#100A42
RGB	rgb(16, 10, 66)
HSL	hsl(246, 74%, 15%)
HSV	hsv(246, 85%, 26%)
CMYK	cmyk(75.8%, 84.8%, 0%, 74.1%)
CIE-LAB	lab(6.51, 22.72, -33.86)
CIE-LCH	lch(6.51, 40.78, 303.86°)
OKLab	oklab(20.32% 0.0132 -0.0984)
OKLCH	oklch(20.32% 0.099 277.7)
XYZ	xyz(1.3053, 0.7205, 5.2235)
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

#100A42 #3C420A

analogous

#0A2042 #100A42 #2C0A42

triadic

#100A42 #42100A #0A4210

tetradic

#100A42 #420A20 #3C420A #0A422C

square

#100A42 #420A20 #3C420A #0A422C

split-complementary

#100A42 #422C0A #20420A

monochromatic

#06041B #06041B #100A42 #1D1277 #2A1AAC

Accessibility & contrast

On white

18.35

#100A42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#100A42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100A42

18.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100A42	#FFFFFF	#000000	##FFFFFF
##100A42	1.00	18.35	1.14	18.35
#FFFFFF	18.35	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001744

Deuteranopia (green-blind)

#001241

Tritanopia (blue-blind)

#001A25

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #100a42;
/* rgb */ color: rgb(16, 10, 66);
/* oklch */ color: oklch(20.3% 0.099 277.7);

Tailwind

colors: {
  custom: {
    50: '#574a77',
    500: '#100a42',
    950: '#000000',
  },
}

SCSS

$custom: #100a42;
$custom-light: #574a77;
$custom-dark: #000000;

JSON

{
  "hex": "#100a42",
  "rgb": {
    "r": 16,
    "g": 10,
    "b": 66
  },
  "hsl": {
    "h": 246.429,
    "s": 73.684,
    "l": 14.902
  },
  "oklch": {
    "l": 0.20324,
    "c": 0.09924,
    "h": 277.7
  },
  "luminance": 0.00721
}

Semantic roles & 50–950 ramp

primary

#100A42

secondary

#767F29

accent

#F037DD

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040109

muted

#79777B

Preview Lab

Preview with #100A42

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

Preview Lab → · Contrast checker → · Palette generator →