#100C3B#100C3B

#100C3B is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.8% C 0.086 H 278.8°. Best body text is #FFFFFF at 18.46:1 contrast (WCAG AA passes).

Color values

HEX	#100C3B
RGB	rgb(16, 12, 59)
HSL	hsl(245, 66%, 14%)
HSV	hsv(245, 80%, 23%)
CMYK	cmyk(72.9%, 79.7%, 0%, 76.9%)
CIE-LAB	lab(6.22, 18.48, -29.32)
CIE-LCH	lch(6.22, 34.65, 302.22°)
OKLab	oklab(19.84% 0.0133 -0.0853)
OKLCH	oklch(19.84% 0.086 278.8)
XYZ	xyz(1.1343, 0.6888, 4.2100)
Luminance	0.0069 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100C3B #373B0C

analogous

#0C203B #100C3B #280C3B

triadic

#100C3B #3B100C #0C3B10

tetradic

#100C3B #3B0C20 #373B0C #0C3B28

square

#100C3B #3B0C20 #373B0C #0C3B28

split-complementary

#100C3B #3B280C #203B0C

monochromatic

#070519 #070519 #100C3B #1E166E #2C21A1

Accessibility & contrast

On white

18.46

#100C3B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#100C3B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100C3B

18.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100C3B	#FFFFFF	#000000	##FFFFFF
##100C3B	1.00	18.46	1.14	18.46
#FFFFFF	18.46	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00163C

Deuteranopia (green-blind)

#00123A

Tritanopia (blue-blind)

#001922

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #100c3b;
/* rgb */ color: rgb(16, 12, 59);
/* oklch */ color: oklch(19.8% 0.086 278.8);

Tailwind

colors: {
  custom: {
    50: '#554b71',
    500: '#100c3b',
    950: '#000000',
  },
}

SCSS

$custom: #100c3b;
$custom-light: #554b71;
$custom-dark: #000000;

JSON

{
  "hex": "#100c3b",
  "rgb": {
    "r": 16,
    "g": 12,
    "b": 59
  },
  "hsl": {
    "h": 245.106,
    "s": 66.197,
    "l": 13.922
  },
  "oklch": {
    "l": 0.1984,
    "c": 0.08634,
    "h": 278.8
  },
  "luminance": 0.00689
}

Semantic roles & 50–950 ramp

primary

#100C3B

secondary

#71772C

accent

#E93FDB

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030108

muted

#78777B

Preview Lab

Preview with #100C3B

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

Preview Lab → · Contrast checker → · Palette generator →