#030B3A#030B3A

#030B3A is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.5% C 0.091 H 266.3°. Best body text is #FFFFFF at 18.87:1 contrast (WCAG AA passes).

Color values

HEX	#030B3A
RGB	rgb(3, 11, 58)
HSL	hsl(231, 90%, 12%)
HSV	hsv(231, 95%, 23%)
CMYK	cmyk(94.8%, 81%, 0%, 77.3%)
CIE-LAB	lab(5.10, 15.66, -30.46)
CIE-LCH	lch(5.10, 34.25, 297.20°)
OKLab	oklab(18.5% -0.0058 -0.0905)
OKLCH	oklch(18.5% 0.091 266.3)
XYZ	xyz(0.9207, 0.5641, 4.0625)
Luminance	0.0056 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#030B3A #3A3203

analogous

#03273A #030B3A #17033A

triadic

#030B3A #3A030B #0B3A03

tetradic

#030B3A #3A0327 #3A3203 #033A17

square

#030B3A #3A0327 #3A3203 #033A17

split-complementary

#030B3A #3A1703 #273A03

monochromatic

#02061D #02061D #030B3A #061674 #0921AE

Accessibility & contrast

On white

18.87

#030B3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#030B3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #030B3A

18.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##030B3A	#FFFFFF	#000000	##FFFFFF
##030B3A	1.00	18.87	1.11	18.87
#FFFFFF	18.87	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00143B

Deuteranopia (green-blind)

#000E39

Tritanopia (blue-blind)

#001821

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #030b3a;
/* rgb */ color: rgb(3, 11, 58);
/* oklch */ color: oklch(18.5% 0.091 266.3);

Tailwind

colors: {
  custom: {
    50: '#4e4b71',
    500: '#030b3a',
    950: '#000000',
  },
}

SCSS

$custom: #030b3a;
$custom-light: #4e4b71;
$custom-dark: #000000;

JSON

{
  "hex": "#030b3a",
  "rgb": {
    "r": 3,
    "g": 11,
    "b": 58
  },
  "hsl": {
    "h": 231.273,
    "s": 90.164,
    "l": 11.961
  },
  "oklch": {
    "l": 0.18504,
    "c": 0.09072,
    "h": 266.3
  },
  "luminance": 0.00564
}

Semantic roles & 50–950 ramp

primary

#030B3A

secondary

#7D6F1C

accent

#E029FF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020107

muted

#78777A

Preview Lab

Preview with #030B3A

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

Preview Lab → · Contrast checker → · Palette generator →