#00031F#00031F

#00031F is a very dark, moderate blue. Relative luminance 0.002; OKLCH L 12.3% C 0.065 H 263.4°. Best body text is #FFFFFF at 20.33:1 contrast (WCAG AA passes).

Color values

HEX	#00031F
RGB	rgb(0, 3, 31)
HSL	hsl(234, 100%, 6%)
HSV	hsv(234, 100%, 12%)
CMYK	cmyk(100%, 90.3%, 0%, 87.8%)
CIE-LAB	lab(1.48, 5.08, -15.72)
CIE-LCH	lch(1.48, 16.52, 287.89°)
OKLab	oklab(12.3% -0.0074 -0.0647)
OKLCH	oklch(12.3% 0.065 263.4)
XYZ	xyz(0.2798, 0.1640, 1.3130)
Luminance	0.0016 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 8.29

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#00031F #1F1C00

analogous

#00121F #00031F #0C001F

triadic

#00031F #1F0003 #031F00

tetradic

#00031F #1F0012 #1F1C00 #001F0C

square

#00031F #1F0012 #1F1C00 #001F0C

split-complementary

#00031F #1F0C00 #121F00

monochromatic

#00031F #00031F #00031F #00095C #000F99

Accessibility & contrast

On white

20.33

#00031F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#00031F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #00031F

20.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##00031F	#FFFFFF	#000000	##FFFFFF
##00031F	1.00	20.33	1.03	20.33
#FFFFFF	20.33	1.00	21.00	1.00
#000000	1.03	21.00	1.00	21.00
##FFFFFF	20.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000720

Deuteranopia (green-blind)

#00041E

Tritanopia (blue-blind)

#00090F

Achromatopsia (no color)

#050505

Design tokens & code

CSS

--color: #00031f;
/* rgb */ color: rgb(0, 3, 31);
/* oklch */ color: oklch(12.3% 0.065 263.4);

Tailwind

colors: {
  custom: {
    50: '#46485a',
    500: '#00031f',
    950: '#000000',
  },
}

SCSS

$custom: #00031f;
$custom-light: #46485a;
$custom-dark: #000000;

JSON

{
  "hex": "#00031f",
  "rgb": {
    "r": 0,
    "g": 3,
    "b": 31
  },
  "hsl": {
    "h": 234.194,
    "s": 100,
    "l": 6.078
  },
  "oklch": {
    "l": 0.12297,
    "c": 0.06509,
    "h": 263.4
  },
  "luminance": 0.00164
}

Semantic roles & 50–950 ramp

primary

#00031F

secondary

#686012

accent

#EA29FF

background

#F3F4F5

surface

#E5E6E9

border

#C1C2C5

text

#000004

muted

#767779

Preview Lab

Preview with #00031F

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

Preview Lab → · Contrast checker → · Palette generator →