#03031F#03031F

#03031F is a very dark, moderate blue. Relative luminance 0.002; OKLCH L 12.8% C 0.062 H 273.3°. Best body text is #FFFFFF at 20.26:1 contrast (WCAG AA passes).

Color values

HEX	#03031F
RGB	rgb(3, 3, 31)
HSL	hsl(240, 82%, 7%)
HSV	hsv(240, 90%, 12%)
CMYK	cmyk(90.3%, 90.3%, 0%, 87.8%)
CIE-LAB	lab(1.66, 5.86, -15.44)
CIE-LCH	lch(1.66, 16.52, 290.79°)
OKLab	oklab(12.81% 0.0036 -0.0619)
OKLCH	oklch(12.81% 0.062 273.3)
XYZ	xyz(0.3174, 0.1834, 1.3147)
Luminance	0.0018 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 8.36

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#03031F #1F1F03

analogous

#03111F #03031F #11031F

triadic

#03031F #1F0303 #031F03

tetradic

#03031F #1F0311 #1F1F03 #031F11

square

#03031F #1F0311 #1F1F03 #031F11

split-complementary

#03031F #1F1103 #111F03

monochromatic

#03031C #03031C #03031F #080857 #0E0E8F

Accessibility & contrast

On white

20.26

#03031F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.04

#03031F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #03031F

20.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##03031F	#FFFFFF	#000000	##FFFFFF
##03031F	1.00	20.26	1.04	20.26
#FFFFFF	20.26	1.00	21.00	1.00
#000000	1.04	21.00	1.00	21.00
##FFFFFF	20.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000720

Deuteranopia (green-blind)

#00051E

Tritanopia (blue-blind)

#00090F

Achromatopsia (no color)

#060606

Design tokens & code

CSS

--color: #03031f;
/* rgb */ color: rgb(3, 3, 31);
/* oklch */ color: oklch(12.8% 0.062 273.3);

Tailwind

colors: {
  custom: {
    50: '#47485a',
    500: '#03031f',
    950: '#000000',
  },
}

SCSS

$custom: #03031f;
$custom-light: #47485a;
$custom-dark: #000000;

JSON

{
  "hex": "#03031f",
  "rgb": {
    "r": 3,
    "g": 3,
    "b": 31
  },
  "hsl": {
    "h": 240,
    "s": 82.353,
    "l": 6.667
  },
  "oklch": {
    "l": 0.12813,
    "c": 0.06202,
    "h": 273.3
  },
  "luminance": 0.00183
}

Semantic roles & 50–950 ramp

primary

#03031F

secondary

#63631B

accent

#F92FF9

background

#F4F4F5

surface

#E6E6E9

border

#C2C2C5

text

#000004

muted

#777779

Preview Lab

Preview with #03031F

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

Preview Lab → · Contrast checker → · Palette generator →