#100C33#100C33

#100C33 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 19.0% C 0.074 H 281.4°. Best body text is #FFFFFF at 18.71:1 contrast (WCAG AA passes).

Color values

HEX	#100C33
RGB	rgb(16, 12, 51)
HSL	hsl(246, 62%, 12%)
HSV	hsv(246, 76%, 20%)
CMYK	cmyk(68.6%, 76.5%, 0%, 80%)
CIE-LAB	lab(5.53, 14.62, -24.60)
CIE-LCH	lch(5.53, 28.62, 300.73°)
OKLab	oklab(18.96% 0.0145 -0.0723)
OKLCH	oklch(18.96% 0.074 281.4)
XYZ	xyz(0.9425, 0.6121, 3.1998)
Luminance	0.0061 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100C33 #2F330C

analogous

#0C1C33 #100C33 #240C33

triadic

#100C33 #33100C #0C3310

tetradic

#100C33 #330C1C #2F330C #0C3324

square

#100C33 #330C1C #2F330C #0C3324

split-complementary

#100C33 #33240C #1C330C

monochromatic

#080619 #080619 #100C33 #201865 #2F2396

Accessibility & contrast

On white

18.71

#100C33 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#100C33 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100C33

18.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100C33	#FFFFFF	#000000	##FFFFFF
##100C33	1.00	18.71	1.12	18.71
#FFFFFF	18.71	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001434

Deuteranopia (green-blind)

#001132

Tritanopia (blue-blind)

#01161D

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #100c33;
/* rgb */ color: rgb(16, 12, 51);
/* oklch */ color: oklch(19.0% 0.074 281.4);

Tailwind

colors: {
  custom: {
    50: '#524b6b',
    500: '#100c33',
    950: '#000000',
  },
}

SCSS

$custom: #100c33;
$custom-light: #524b6b;
$custom-dark: #000000;

JSON

{
  "hex": "#100c33",
  "rgb": {
    "r": 16,
    "g": 12,
    "b": 51
  },
  "hsl": {
    "h": 246.154,
    "s": 61.905,
    "l": 12.353
  },
  "oklch": {
    "l": 0.18962,
    "c": 0.07373,
    "h": 281.4
  },
  "luminance": 0.00612
}

Semantic roles & 50–950 ramp

primary

#100C33

secondary

#686F2C

accent

#E543D4

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020106

muted

#78777A

Preview Lab

Preview with #100C33

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

Preview Lab → · Contrast checker → · Palette generator →