#00051B#00051B

#00051B is a very dark, muted blue. Relative luminance 0.002; OKLCH L 12.6% C 0.053 H 260.5°. Best body text is #FFFFFF at 20.24:1 contrast (WCAG AA passes).

Color values

HEX	#00051B
RGB	rgb(0, 5, 27)
HSL	hsl(229, 100%, 5%)
HSV	hsv(229, 100%, 11%)
CMYK	cmyk(100%, 81.5%, 0%, 89.4%)
CIE-LAB	lab(1.69, 3.02, -12.19)
CIE-LCH	lch(1.69, 12.56, 283.91°)
OKLab	oklab(12.6% -0.0087 -0.0523)
OKLCH	oklch(12.6% 0.053 260.5)
XYZ	xyz(0.2520, 0.1876, 1.0596)
Luminance	0.0019 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#00051B #1B1600

analogous

#00121B #00051B #08001B

triadic

#00051B #1B0005 #051B00

tetradic

#00051B #1B0012 #1B1600 #001B08

square

#00051B #1B0012 #1B1600 #001B08

split-complementary

#00051B #1B0800 #121B00

monochromatic

#00061F #00061F #00061F #001058 #001C95

Accessibility & contrast

On white

20.24

#00051B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.04

#00051B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #00051B

20.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##00051B	#FFFFFF	#000000	##FFFFFF
##00051B	1.00	20.24	1.04	20.24
#FFFFFF	20.24	1.00	21.00	1.00
#000000	1.04	21.00	1.00	21.00
##FFFFFF	20.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00081C

Deuteranopia (green-blind)

#00051B

Tritanopia (blue-blind)

#000A0E

Achromatopsia (no color)

#060606

Design tokens & code

CSS

--color: #00051b;
/* rgb */ color: rgb(0, 5, 27);
/* oklch */ color: oklch(12.6% 0.053 260.5);

Tailwind

colors: {
  custom: {
    50: '#464957',
    500: '#00051b',
    950: '#000000',
  },
}

SCSS

$custom: #00051b;
$custom-light: #464957;
$custom-dark: #000000;

JSON

{
  "hex": "#00051b",
  "rgb": {
    "r": 0,
    "g": 5,
    "b": 27
  },
  "hsl": {
    "h": 228.889,
    "s": 100,
    "l": 5.294
  },
  "oklch": {
    "l": 0.126,
    "c": 0.05298,
    "h": 260.5
  },
  "luminance": 0.00188
}

Semantic roles & 50–950 ramp

primary

#00051B

secondary

#655612

accent

#D729FF

background

#F3F4F5

surface

#E5E6E9

border

#C1C2C5

text

#000003

muted

#767778

Preview Lab

Preview with #00051B

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

Preview Lab → · Contrast checker → · Palette generator →