#100A3E#100A3E

#100A3E is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.8% C 0.093 H 278.8°. Best body text is #FFFFFF at 18.50:1 contrast (WCAG AA passes).

Color values

HEX	#100A3E
RGB	rgb(16, 10, 62)
HSL	hsl(247, 72%, 14%)
HSV	hsv(247, 84%, 24%)
CMYK	cmyk(74.2%, 83.9%, 0%, 75.7%)
CIE-LAB	lab(6.10, 20.90, -31.68)
CIE-LCH	lch(6.10, 37.96, 303.42°)
OKLab	oklab(19.84% 0.0143 -0.0923)
OKLCH	oklch(19.84% 0.093 278.8)
XYZ	xyz(1.1914, 0.6749, 4.6240)
Luminance	0.0067 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100A3E #383E0A

analogous

#0A1E3E #100A3E #2A0A3E

triadic

#100A3E #3E100A #0A3E10

tetradic

#100A3E #3E0A1E #383E0A #0A3E2A

square

#100A3E #3E0A1E #383E0A #0A3E2A

split-complementary

#100A3E #3E2A0A #1E3E0A

monochromatic

#07041A #07041A #100A3E #1E1373 #2B1BA7

Accessibility & contrast

On white

18.50

#100A3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#100A3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100A3E

18.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100A3E	#FFFFFF	#000000	##FFFFFF
##100A3E	1.00	18.50	1.14	18.50
#FFFFFF	18.50	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001640

Deuteranopia (green-blind)

#00113D

Tritanopia (blue-blind)

#001923

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #100a3e;
/* rgb */ color: rgb(16, 10, 62);
/* oklch */ color: oklch(19.8% 0.093 278.8);

Tailwind

colors: {
  custom: {
    50: '#564a74',
    500: '#100a3e',
    950: '#000000',
  },
}

SCSS

$custom: #100a3e;
$custom-light: #564a74;
$custom-dark: #000000;

JSON

{
  "hex": "#100a3e",
  "rgb": {
    "r": 16,
    "g": 10,
    "b": 62
  },
  "hsl": {
    "h": 246.923,
    "s": 72.222,
    "l": 14.118
  },
  "oklch": {
    "l": 0.19839,
    "c": 0.09343,
    "h": 278.8
  },
  "luminance": 0.00675
}

Semantic roles & 50–950 ramp

primary

#100A3E

secondary

#727B28

accent

#EF39DA

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100A3E

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

Preview Lab → · Contrast checker → · Palette generator →