#03001F#03001F

#03001F is a very dark, moderate blue. Relative luminance 0.001; OKLCH L 11.5% C 0.071 H 276.3°. Best body text is #FFFFFF at 20.52:1 contrast (WCAG AA passes).

Color values

HEX	#03001F
RGB	rgb(3, 0, 31)
HSL	hsl(246, 100%, 6%)
HSV	hsv(246, 100%, 12%)
CMYK	cmyk(90.3%, 100%, 0%, 87.8%)
CIE-LAB	lab(1.07, 7.06, -16.33)
CIE-LCH	lch(1.07, 17.79, 293.38°)
OKLab	oklab(11.48% 0.0079 -0.071)
OKLCH	oklch(11.48% 0.071 276.3)
XYZ	xyz(0.2848, 0.1183, 1.3039)
Luminance	0.0012 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.76

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#03001F #1C1F00

analogous

#000C1F #03001F #12001F

triadic

#03001F #1F0300 #001F03

tetradic

#03001F #1F000C #1C1F00 #001F12

square

#03001F #1F000C #1C1F00 #001F12

split-complementary

#03001F #1F1200 #0C1F00

monochromatic

#03001F #03001F #03001F #09005C #0F0099

Accessibility & contrast

On white

20.52

#03001F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.02

#03001F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #03001F

20.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##03001F	#FFFFFF	#000000	##FFFFFF
##03001F	1.00	20.52	1.02	20.52
#FFFFFF	20.52	1.00	21.00	1.00
#000000	1.02	21.00	1.00	21.00
##FFFFFF	20.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000520

Deuteranopia (green-blind)

#00031E

Tritanopia (blue-blind)

#00060D

Achromatopsia (no color)

#040404

Design tokens & code

CSS

--color: #03001f;
/* rgb */ color: rgb(3, 0, 31);
/* oklch */ color: oklch(11.5% 0.071 276.3);

Tailwind

colors: {
  custom: {
    50: '#47475a',
    500: '#03001f',
    950: '#000000',
  },
}

SCSS

$custom: #03001f;
$custom-light: #47475a;
$custom-dark: #000000;

JSON

{
  "hex": "#03001f",
  "rgb": {
    "r": 3,
    "g": 0,
    "b": 31
  },
  "hsl": {
    "h": 245.806,
    "s": 100,
    "l": 6.078
  },
  "oklch": {
    "l": 0.11481,
    "c": 0.0714,
    "h": 276.3
  },
  "luminance": 0.00118
}

Semantic roles & 50–950 ramp

primary

#03001F

secondary

#606812

accent

#FF29EA

background

#F4F3F5

surface

#E6E5E9

border

#C2C1C5

text

#000004

muted

#777779

Preview Lab

Preview with #03001F

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

Preview Lab → · Contrast checker → · Palette generator →