#100D56#100D56

#100D56 is a very dark, vivid blue. Relative luminance 0.011; OKLCH L 23.3% C 0.124 H 272.9°. Best body text is #FFFFFF at 17.30:1 contrast (WCAG AA passes).

Color values

HEX	#100D56
RGB	rgb(16, 13, 86)
HSL	hsl(242, 74%, 19%)
HSV	hsv(242, 85%, 34%)
CMYK	cmyk(81.4%, 84.9%, 0%, 66.3%)
CIE-LAB	lab(9.56, 28.71, -42.73)
CIE-LCH	lch(9.56, 51.48, 303.90°)
OKLab	oklab(23.28% 0.0063 -0.1237)
OKLCH	oklch(23.28% 0.124 272.9)
XYZ	xyz(2.0368, 1.0697, 8.9014)
Luminance	0.0107 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D56 #53560D

analogous

#0D2F56 #100D56 #350D56

triadic

#100D56 #56100D #0D5610

tetradic

#100D56 #560D2F #53560D #0D5635

square

#100D56 #560D2F #53560D #0D5635

split-complementary

#100D56 #56350D #2F560D

monochromatic

#05041B #060521 #100D56 #1A158B #241DC0

Accessibility & contrast

On white

17.30

#100D56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#100D56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D56

17.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D56	#FFFFFF	#000000	##FFFFFF
##100D56	1.00	17.30	1.21	17.30
#FFFFFF	17.30	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E58

Deuteranopia (green-blind)

#001755

Tritanopia (blue-blind)

#002331

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #100d56;
/* rgb */ color: rgb(16, 13, 86);
/* oklch */ color: oklch(23.3% 0.124 272.9);

Tailwind

colors: {
  custom: {
    50: '#5d4d87',
    500: '#100d56',
    950: '#000000',
  },
}

SCSS

$custom: #100d56;
$custom-light: #5d4d87;
$custom-dark: #000000;

JSON

{
  "hex": "#100d56",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 86
  },
  "hsl": {
    "h": 242.466,
    "s": 73.737,
    "l": 19.412
  },
  "oklch": {
    "l": 0.23282,
    "c": 0.12382,
    "h": 272.9
  },
  "luminance": 0.0107
}

Semantic roles & 50–950 ramp

primary

#100D56

secondary

#8D912E

accent

#F037E9

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05010B

muted

#79777C

Preview Lab

Preview with #100D56

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

Preview Lab → · Contrast checker → · Palette generator →