#100F42#100F42

#100F42 is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 21.2% C 0.093 H 275.8°. Best body text is #FFFFFF at 17.96:1 contrast (WCAG AA passes).

Color values

HEX	#100F42
RGB	rgb(16, 15, 66)
HSL	hsl(241, 63%, 16%)
HSV	hsv(241, 77%, 26%)
CMYK	cmyk(75.8%, 77.3%, 0%, 74.1%)
CIE-LAB	lab(7.63, 19.75, -32.02)
CIE-LCH	lch(7.63, 37.62, 301.66°)
OKLab	oklab(21.2% 0.0095 -0.0925)
OKLCH	oklch(21.2% 0.093 275.8)
XYZ	xyz(1.3676, 0.8450, 5.2442)
Luminance	0.0084 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 2.66

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F42 #41420F

analogous

#0F2742 #100F42 #290F42

triadic

#100F42 #42100F #0F4210

tetradic

#100F42 #420F27 #41420F #0F4229

square

#100F42 #420F27 #41420F #0F4229

split-complementary

#100F42 #42290F #27420F

monochromatic

#060619 #060619 #100F42 #1C1A74 #2826A6

Accessibility & contrast

On white

17.96

#100F42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#100F42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F42

17.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F42	#FFFFFF	#000000	##FFFFFF
##100F42	1.00	17.96	1.17	17.96
#FFFFFF	17.96	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001944

Deuteranopia (green-blind)

#001541

Tritanopia (blue-blind)

#001D27

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #100f42;
/* rgb */ color: rgb(16, 15, 66);
/* oklch */ color: oklch(21.2% 0.093 275.8);

Tailwind

colors: {
  custom: {
    50: '#574d77',
    500: '#100f42',
    950: '#000000',
  },
}

SCSS

$custom: #100f42;
$custom-light: #574d77;
$custom-dark: #000000;

JSON

{
  "hex": "#100f42",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 66
  },
  "hsl": {
    "h": 241.176,
    "s": 62.963,
    "l": 15.882
  },
  "oklch": {
    "l": 0.21197,
    "c": 0.09297,
    "h": 275.8
  },
  "luminance": 0.00845
}

Semantic roles & 50–950 ramp

primary

#100F42

secondary

#7B7C30

accent

#E642E3

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030109

muted

#78777B

Preview Lab

Preview with #100F42

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

Preview Lab → · Contrast checker → · Palette generator →