#100B42#100B42

#100B42 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 20.5% C 0.098 H 277.3°. Best body text is #FFFFFF at 18.28:1 contrast (WCAG AA passes).

Color values

HEX	#100B42
RGB	rgb(16, 11, 66)
HSL	hsl(245, 71%, 15%)
HSV	hsv(245, 83%, 26%)
CMYK	cmyk(75.8%, 83.3%, 0%, 74.1%)
CIE-LAB	lab(6.71, 22.19, -33.54)
CIE-LCH	lch(6.71, 40.21, 303.50°)
OKLab	oklab(20.49% 0.0125 -0.0973)
OKLCH	oklch(20.49% 0.098 277.3)
XYZ	xyz(1.3164, 0.7427, 5.2272)
Luminance	0.0074 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100B42 #3D420B

analogous

#0B2142 #100B42 #2C0B42

triadic

#100B42 #42100B #0B4210

tetradic

#100B42 #420B21 #3D420B #0B422C

square

#100B42 #420B21 #3D420B #0B422C

split-complementary

#100B42 #422C0B #21420B

monochromatic

#06041A #06041A #100B42 #1D1476 #291CAB

Accessibility & contrast

On white

18.28

#100B42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#100B42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100B42

18.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100B42	#FFFFFF	#000000	##FFFFFF
##100B42	1.00	18.28	1.15	18.28
#FFFFFF	18.28	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001744

Deuteranopia (green-blind)

#001341

Tritanopia (blue-blind)

#001B25

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #100b42;
/* rgb */ color: rgb(16, 11, 66);
/* oklch */ color: oklch(20.5% 0.098 277.3);

Tailwind

colors: {
  custom: {
    50: '#574b77',
    500: '#100b42',
    950: '#000000',
  },
}

SCSS

$custom: #100b42;
$custom-light: #574b77;
$custom-dark: #000000;

JSON

{
  "hex": "#100b42",
  "rgb": {
    "r": 16,
    "g": 11,
    "b": 66
  },
  "hsl": {
    "h": 245.455,
    "s": 71.429,
    "l": 15.098
  },
  "oklch": {
    "l": 0.20486,
    "c": 0.09806,
    "h": 277.3
  },
  "luminance": 0.00743
}

Semantic roles & 50–950 ramp

primary

#100B42

secondary

#777F2A

accent

#EE3ADE

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040109

muted

#79777B

Preview Lab

Preview with #100B42

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

Preview Lab → · Contrast checker → · Palette generator →