#100F52#100F52

#100F52 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.1% C 0.116 H 273.1°. Best body text is #FFFFFF at 17.32:1 contrast (WCAG AA passes).

Color values

HEX	#100F52
RGB	rgb(16, 15, 82)
HSL	hsl(241, 69%, 19%)
HSV	hsv(241, 82%, 32%)
CMYK	cmyk(80.5%, 81.7%, 0%, 67.8%)
CIE-LAB	lab(9.49, 26.00, -40.12)
CIE-LCH	lch(9.49, 47.81, 302.95°)
OKLab	oklab(23.09% 0.0063 -0.1161)
OKLCH	oklch(23.09% 0.116 273.1)
XYZ	xyz(1.9070, 1.0608, 8.0853)
Luminance	0.0106 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F52 #51520F

analogous

#0F3052 #100F52 #320F52

triadic

#100F52 #52100F #0F5210

tetradic

#100F52 #520F30 #51520F #0F5232

square

#100F52 #520F30 #51520F #0F5232

split-complementary

#100F52 #52320F #30520F

monochromatic

#05051A #06061E #100F52 #1A1886 #2422B9

Accessibility & contrast

On white

17.32

#100F52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#100F52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F52

17.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F52	#FFFFFF	#000000	##FFFFFF
##100F52	1.00	17.32	1.21	17.32
#FFFFFF	17.32	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E54

Deuteranopia (green-blind)

#001751

Tritanopia (blue-blind)

#00232F

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #100f52;
/* rgb */ color: rgb(16, 15, 82);
/* oklch */ color: oklch(23.1% 0.116 273.1);

Tailwind

colors: {
  custom: {
    50: '#5b4e83',
    500: '#100f52',
    950: '#000000',
  },
}

SCSS

$custom: #100f52;
$custom-light: #5b4e83;
$custom-dark: #000000;

JSON

{
  "hex": "#100f52",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 82
  },
  "hsl": {
    "h": 240.896,
    "s": 69.072,
    "l": 19.02
  },
  "oklch": {
    "l": 0.23085,
    "c": 0.11625,
    "h": 273.1
  },
  "luminance": 0.01061
}

Semantic roles & 50–950 ramp

primary

#100F52

secondary

#8B8C31

accent

#EC3CE9

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#05010B

muted

#79777C

Preview Lab

Preview with #100F52

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

Preview Lab → · Contrast checker → · Palette generator →