#030B39#030B39

#030B39 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.4% C 0.089 H 266.3°. Best body text is #FFFFFF at 18.91:1 contrast (WCAG AA passes).

Color values

HEX	#030B39
RGB	rgb(3, 11, 57)
HSL	hsl(231, 90%, 12%)
HSV	hsv(231, 95%, 22%)
CMYK	cmyk(94.7%, 80.7%, 0%, 77.6%)
CIE-LAB	lab(5.00, 15.07, -29.88)
CIE-LCH	lch(5.00, 33.46, 296.76°)
OKLab	oklab(18.38% -0.0057 -0.089)
OKLCH	oklch(18.38% 0.089 266.3)
XYZ	xyz(0.8955, 0.5540, 3.9298)
Luminance	0.0055 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#030B39 #393103

analogous

#032639 #030B39 #160339

triadic

#030B39 #39030B #0B3903

tetradic

#030B39 #390326 #393103 #033916

square

#030B39 #390326 #393103 #033916

split-complementary

#030B39 #391603 #263903

monochromatic

#02061D #02061D #030B39 #061673 #0921AD

Accessibility & contrast

On white

18.91

#030B39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#030B39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #030B39

18.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##030B39	#FFFFFF	#000000	##FFFFFF
##030B39	1.00	18.91	1.11	18.91
#FFFFFF	18.91	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00143A

Deuteranopia (green-blind)

#000E38

Tritanopia (blue-blind)

#001820

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #030b39;
/* rgb */ color: rgb(3, 11, 57);
/* oklch */ color: oklch(18.4% 0.089 266.3);

Tailwind

colors: {
  custom: {
    50: '#4e4b70',
    500: '#030b39',
    950: '#000000',
  },
}

SCSS

$custom: #030b39;
$custom-light: #4e4b70;
$custom-dark: #000000;

JSON

{
  "hex": "#030b39",
  "rgb": {
    "r": 3,
    "g": 11,
    "b": 57
  },
  "hsl": {
    "h": 231.111,
    "s": 90,
    "l": 11.765
  },
  "oklch": {
    "l": 0.18377,
    "c": 0.0892,
    "h": 266.3
  },
  "luminance": 0.00554
}

Semantic roles & 50–950 ramp

primary

#030B39

secondary

#7C6E1C

accent

#DF29FF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020107

muted

#78777A

Preview Lab

Preview with #030B39

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

Preview Lab → · Contrast checker → · Palette generator →