#100C54#100C54

#100C54 is a very dark, vivid blue. Relative luminance 0.010; OKLCH L 22.9% C 0.122 H 273.4°. Best body text is #FFFFFF at 17.46:1 contrast (WCAG AA passes).

Color values

HEX	#100C54
RGB	rgb(16, 12, 84)
HSL	hsl(243, 75%, 19%)
HSV	hsv(243, 86%, 33%)
CMYK	cmyk(81%, 85.7%, 0%, 67.1%)
CIE-LAB	lab(9.10, 28.57, -42.13)
CIE-LCH	lch(9.10, 50.91, 304.14°)
OKLab	oklab(22.89% 0.0073 -0.1219)
OKLCH	oklch(22.89% 0.122 273.4)
XYZ	xyz(1.9449, 1.0130, 8.4788)
Luminance	0.0101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100C54 #50540C

analogous

#0C2C54 #100C54 #340C54

triadic

#100C54 #54100C #0C5410

tetradic

#100C54 #540C2C #50540C #0C5434

square

#100C54 #540C2C #50540C #0C5434

split-complementary

#100C54 #54340C #2C540C

monochromatic

#05041B #06041E #100C54 #1A148A #241BBF

Accessibility & contrast

On white

17.46

#100C54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#100C54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100C54

17.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100C54	#FFFFFF	#000000	##FFFFFF
##100C54	1.00	17.46	1.20	17.46
#FFFFFF	17.46	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D56

Deuteranopia (green-blind)

#001653

Tritanopia (blue-blind)

#002230

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #100c54;
/* rgb */ color: rgb(16, 12, 84);
/* oklch */ color: oklch(22.9% 0.122 273.4);

Tailwind

colors: {
  custom: {
    50: '#5c4c85',
    500: '#100c54',
    950: '#000000',
  },
}

SCSS

$custom: #100c54;
$custom-light: #5c4c85;
$custom-dark: #000000;

JSON

{
  "hex": "#100c54",
  "rgb": {
    "r": 16,
    "g": 12,
    "b": 84
  },
  "hsl": {
    "h": 243.333,
    "s": 75,
    "l": 18.824
  },
  "oklch": {
    "l": 0.22885,
    "c": 0.12211,
    "h": 273.4
  },
  "luminance": 0.01013
}

Semantic roles & 50–950 ramp

primary

#100C54

secondary

#8A8F2D

accent

#F236E7

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#05010B

muted

#79777C

Preview Lab

Preview with #100C54

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

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