#100D42#100D42

#100D42 is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.8% C 0.096 H 276.6°. Best body text is #FFFFFF at 18.13:1 contrast (WCAG AA passes).

Color values

HEX	#100D42
RGB	rgb(16, 13, 66)
HSL	hsl(243, 67%, 15%)
HSV	hsv(243, 80%, 26%)
CMYK	cmyk(75.8%, 80.3%, 0%, 74.1%)
CIE-LAB	lab(7.15, 21.04, -32.82)
CIE-LCH	lch(7.15, 38.98, 302.66°)
OKLab	oklab(20.83% 0.0111 -0.095)
OKLCH	oklch(20.83% 0.096 276.6)
XYZ	xyz(1.3407, 0.7912, 5.2353)
Luminance	0.0079 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D42 #3F420D

analogous

#0D2442 #100D42 #2A0D42

triadic

#100D42 #42100D #0D4210

tetradic

#100D42 #420D24 #3F420D #0D422A

square

#100D42 #420D24 #3F420D #0D422A

split-complementary

#100D42 #422A0D #24420D

monochromatic

#06051A #06051A #100D42 #1C1775 #2921A8

Accessibility & contrast

On white

18.13

#100D42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#100D42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D42

18.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D42	#FFFFFF	#000000	##FFFFFF
##100D42	1.00	18.13	1.16	18.13
#FFFFFF	18.13	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001844

Deuteranopia (green-blind)

#001341

Tritanopia (blue-blind)

#001C26

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #100d42;
/* rgb */ color: rgb(16, 13, 66);
/* oklch */ color: oklch(20.8% 0.096 276.6);

Tailwind

colors: {
  custom: {
    50: '#574c77',
    500: '#100d42',
    950: '#000000',
  },
}

SCSS

$custom: #100d42;
$custom-light: #574c77;
$custom-dark: #000000;

JSON

{
  "hex": "#100d42",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 66
  },
  "hsl": {
    "h": 243.396,
    "s": 67.089,
    "l": 15.49
  },
  "oklch": {
    "l": 0.20829,
    "c": 0.09559,
    "h": 276.6
  },
  "luminance": 0.00791
}

Semantic roles & 50–950 ramp

primary

#100D42

secondary

#797E2D

accent

#EA3EE0

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030109

muted

#78777B

Preview Lab

Preview with #100D42

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

Preview Lab → · Contrast checker → · Palette generator →