#00102B#00102B

#00102B is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.8% C 0.061 H 256.2°. Best body text is #FFFFFF at 18.94:1 contrast (WCAG AA passes).

Color values

HEX	#00102B
RGB	rgb(0, 16, 43)
HSL	hsl(218, 100%, 8%)
HSV	hsv(218, 100%, 17%)
CMYK	cmyk(100%, 62.8%, 0%, 83.1%)
CIE-LAB	lab(4.92, 4.23, -19.67)
CIE-LCH	lch(4.92, 20.12, 282.14°)
OKLab	oklab(17.76% -0.0146 -0.0593)
OKLCH	oklch(17.76% 0.061 256.2)
XYZ	xyz(0.6212, 0.5449, 2.3575)
Luminance	0.0054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.08

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#00102B #2B1B00

analogous

#00252B #00102B #05002B

triadic

#00102B #2B0010 #102B00

tetradic

#00102B #2B0025 #2B1B00 #002B05

square

#00102B #2B0025 #2B1B00 #002B05

split-complementary

#00102B #2B0500 #252B00

monochromatic

#000B1F #000B1F #00102B #002768 #003EA5

Accessibility & contrast

On white

18.94

#00102B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#00102B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #00102B

18.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##00102B	#FFFFFF	#000000	##FFFFFF
##00102B	1.00	18.94	1.11	18.94
#FFFFFF	18.94	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02132C

Deuteranopia (green-blind)

#000F2A

Tritanopia (blue-blind)

#00171B

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #00102b;
/* rgb */ color: rgb(0, 16, 43);
/* oklch */ color: oklch(17.8% 0.061 256.2);

Tailwind

colors: {
  custom: {
    50: '#474e64',
    500: '#00102b',
    950: '#000000',
  },
}

SCSS

$custom: #00102b;
$custom-light: #474e64;
$custom-dark: #000000;

JSON

{
  "hex": "#00102b",
  "rgb": {
    "r": 0,
    "g": 16,
    "b": 43
  },
  "hsl": {
    "h": 217.674,
    "s": 100,
    "l": 8.431
  },
  "oklch": {
    "l": 0.1776,
    "c": 0.06107,
    "h": 256.2
  },
  "luminance": 0.00545
}

Semantic roles & 50–950 ramp

primary

#00102B

secondary

#734F14

accent

#AF29FF

background

#F4F4F6

surface

#E6E7EB

border

#C2C3C6

text

#010105

muted

#77777A

Preview Lab

Preview with #00102B

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

Preview Lab → · Contrast checker → · Palette generator →