#100F33#100F33

#100F33 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.6% C 0.069 H 279.2°. Best body text is #FFFFFF at 18.45:1 contrast (WCAG AA passes).

Color values

HEX	#100F33
RGB	rgb(16, 15, 51)
HSL	hsl(242, 55%, 13%)
HSV	hsv(242, 71%, 20%)
CMYK	cmyk(68.6%, 70.6%, 0%, 80%)
CIE-LAB	lab(6.24, 13.03, -23.46)
CIE-LCH	lch(6.24, 26.84, 299.06°)
OKLab	oklab(19.6% 0.011 -0.0681)
OKLCH	oklch(19.6% 0.069 279.2)
XYZ	xyz(0.9819, 0.6908, 3.2129)
Luminance	0.0069 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F33 #32330F

analogous

#0F2033 #100F33 #220F33

triadic

#100F33 #33100F #0F3310

tetradic

#100F33 #330F20 #32330F #0F3322

square

#100F33 #330F20 #32330F #0F3322

split-complementary

#100F33 #33220F #20330F

monochromatic

#070718 #070718 #100F33 #1F1D62 #2E2B92

Accessibility & contrast

On white

18.45

#100F33 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#100F33 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F33

18.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F33	#FFFFFF	#000000	##FFFFFF
##100F33	1.00	18.45	1.14	18.45
#FFFFFF	18.45	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001534

Deuteranopia (green-blind)

#001232

Tritanopia (blue-blind)

#01181F

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #100f33;
/* rgb */ color: rgb(16, 15, 51);
/* oklch */ color: oklch(19.6% 0.069 279.2);

Tailwind

colors: {
  custom: {
    50: '#524d6b',
    500: '#100f33',
    950: '#000000',
  },
}

SCSS

$custom: #100f33;
$custom-light: #524d6b;
$custom-dark: #000000;

JSON

{
  "hex": "#100f33",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 51
  },
  "hsl": {
    "h": 241.667,
    "s": 54.545,
    "l": 12.941
  },
  "oklch": {
    "l": 0.19602,
    "c": 0.06897,
    "h": 279.2
  },
  "luminance": 0.00691
}

Semantic roles & 50–950 ramp

primary

#100F33

secondary

#6B6D31

accent

#DE4ADA

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020106

muted

#78777A

Preview Lab

Preview with #100F33

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

Preview Lab → · Contrast checker → · Palette generator →