#100C4D#100C4D

#100C4D is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 22.0% C 0.113 H 274.6°. Best body text is #FFFFFF at 17.77:1 contrast (WCAG AA passes).

Color values

HEX	#100C4D
RGB	rgb(16, 12, 77)
HSL	hsl(244, 73%, 17%)
HSV	hsv(244, 84%, 30%)
CMYK	cmyk(79.2%, 84.4%, 0%, 69.8%)
CIE-LAB	lab(8.21, 26.01, -38.79)
CIE-LCH	lch(8.21, 46.70, 303.85°)
OKLab	oklab(22% 0.0091 -0.1122)
OKLCH	oklch(22% 0.113 274.6)
XYZ	xyz(1.6843, 0.9088, 7.1064)
Luminance	0.0091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.38

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100C4D #494D0C

analogous

#0C294D #100C4D #300C4D

triadic

#100C4D #4D100C #0C4D10

tetradic

#100C4D #4D0C29 #494D0C #0C4D30

square

#100C4D #4D0C29 #494D0C #0C4D30

split-complementary

#100C4D #4D300C #294D0C

monochromatic

#06041A #06041A #100C4D #1B1482 #261DB7

Accessibility & contrast

On white

17.77

#100C4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#100C4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100C4D

17.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100C4D	#FFFFFF	#000000	##FFFFFF
##100C4D	1.00	17.77	1.18	17.77
#FFFFFF	17.77	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B4F

Deuteranopia (green-blind)

#00154C

Tritanopia (blue-blind)

#001F2C

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #100c4d;
/* rgb */ color: rgb(16, 12, 77);
/* oklch */ color: oklch(22.0% 0.113 274.6);

Tailwind

colors: {
  custom: {
    50: '#5a4c80',
    500: '#100c4d',
    950: '#000000',
  },
}

SCSS

$custom: #100c4d;
$custom-light: #5a4c80;
$custom-dark: #000000;

JSON

{
  "hex": "#100c4d",
  "rgb": {
    "r": 16,
    "g": 12,
    "b": 77
  },
  "hsl": {
    "h": 243.692,
    "s": 73.034,
    "l": 17.451
  },
  "oklch": {
    "l": 0.21998,
    "c": 0.11255,
    "h": 274.6
  },
  "luminance": 0.00909
}

Semantic roles & 50–950 ramp

primary

#100C4D

secondary

#83892C

accent

#F038E4

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04010A

muted

#79777C

Preview Lab

Preview with #100C4D

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

Preview Lab → · Contrast checker → · Palette generator →