#100A3C#100A3C

#100A3C is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.6% C 0.090 H 279.4°. Best body text is #FFFFFF at 18.57:1 contrast (WCAG AA passes).

Color values

HEX	#100A3C
RGB	rgb(16, 10, 60)
HSL	hsl(247, 71%, 14%)
HSV	hsv(247, 83%, 24%)
CMYK	cmyk(73.3%, 83.3%, 0%, 76.5%)
CIE-LAB	lab(5.90, 19.97, -30.56)
CIE-LCH	lch(5.90, 36.50, 303.16°)
OKLab	oklab(19.6% 0.0148 -0.0893)
OKLCH	oklch(19.6% 0.09 279.4)
XYZ	xyz(1.1376, 0.6534, 4.3403)
Luminance	0.0065 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100A3C #363C0A

analogous

#0A1D3C #100A3C #290A3C

triadic

#100A3C #3C100A #0A3C10

tetradic

#100A3C #3C0A1D #363C0A #0A3C29

square

#100A3C #3C0A1D #363C0A #0A3C29

split-complementary

#100A3C #3C290A #1D3C0A

monochromatic

#07041A #07041A #100A3C #1E1370 #2C1BA5

Accessibility & contrast

On white

18.57

#100A3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#100A3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100A3C

18.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100A3C	#FFFFFF	#000000	##FFFFFF
##100A3C	1.00	18.57	1.13	18.57
#FFFFFF	18.57	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00153D

Deuteranopia (green-blind)

#00113B

Tritanopia (blue-blind)

#001822

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #100a3c;
/* rgb */ color: rgb(16, 10, 60);
/* oklch */ color: oklch(19.6% 0.090 279.4);

Tailwind

colors: {
  custom: {
    50: '#554a72',
    500: '#100a3c',
    950: '#000000',
  },
}

SCSS

$custom: #100a3c;
$custom-light: #554a72;
$custom-dark: #000000;

JSON

{
  "hex": "#100a3c",
  "rgb": {
    "r": 16,
    "g": 10,
    "b": 60
  },
  "hsl": {
    "h": 247.2,
    "s": 71.429,
    "l": 13.725
  },
  "oklch": {
    "l": 0.196,
    "c": 0.09048,
    "h": 279.4
  },
  "luminance": 0.00653
}

Semantic roles & 50–950 ramp

primary

#100A3C

secondary

#707928

accent

#EE3AD9

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100A3C

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

Preview Lab → · Contrast checker → · Palette generator →