#100F53#100F53

#100F53 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.2% C 0.118 H 273.0°. Best body text is #FFFFFF at 17.28:1 contrast (WCAG AA passes).

Color values

HEX	#100F53
RGB	rgb(16, 15, 83)
HSL	hsl(241, 69%, 19%)
HSV	hsv(241, 82%, 33%)
CMYK	cmyk(80.7%, 81.9%, 0%, 67.5%)
CIE-LAB	lab(9.61, 26.38, -40.60)
CIE-LCH	lch(9.61, 48.42, 303.01°)
OKLab	oklab(23.21% 0.0061 -0.1175)
OKLCH	oklch(23.21% 0.118 273)
XYZ	xyz(1.9453, 1.0761, 8.2871)
Luminance	0.0108 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F53 #52530F

analogous

#0F3053 #100F53 #320F53

triadic

#100F53 #53100F #0F5310

tetradic

#100F53 #530F30 #52530F #0F5332

square

#100F53 #530F30 #52530F #0F5332

split-complementary

#100F53 #53320F #30530F

monochromatic

#05051A #06061F #100F53 #1A1887 #2422BB

Accessibility & contrast

On white

17.28

#100F53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#100F53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F53

17.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F53	#FFFFFF	#000000	##FFFFFF
##100F53	1.00	17.28	1.22	17.28
#FFFFFF	17.28	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E55

Deuteranopia (green-blind)

#001752

Tritanopia (blue-blind)

#002330

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #100f53;
/* rgb */ color: rgb(16, 15, 83);
/* oklch */ color: oklch(23.2% 0.118 273.0);

Tailwind

colors: {
  custom: {
    50: '#5c4e84',
    500: '#100f53',
    950: '#000000',
  },
}

SCSS

$custom: #100f53;
$custom-light: #5c4e84;
$custom-dark: #000000;

JSON

{
  "hex": "#100f53",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 83
  },
  "hsl": {
    "h": 240.882,
    "s": 69.388,
    "l": 19.216
  },
  "oklch": {
    "l": 0.23207,
    "c": 0.11765,
    "h": 273
  },
  "luminance": 0.01076
}

Semantic roles & 50–950 ramp

primary

#100F53

secondary

#8C8D31

accent

#EC3CEA

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#05010B

muted

#79777C

Preview Lab

Preview with #100F53

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

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