#030B3B#030B3B

#030B3B is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.6% C 0.092 H 266.3°. Best body text is #FFFFFF at 18.84:1 contrast (WCAG AA passes).

Color values

HEX	#030B3B
RGB	rgb(3, 11, 59)
HSL	hsl(231, 90%, 12%)
HSV	hsv(231, 95%, 23%)
CMYK	cmyk(94.9%, 81.4%, 0%, 76.9%)
CIE-LAB	lab(5.19, 16.24, -31.03)
CIE-LCH	lch(5.19, 35.02, 297.62°)
OKLab	oklab(18.63% -0.0059 -0.0921)
OKLCH	oklch(18.63% 0.092 266.3)
XYZ	xyz(0.9464, 0.5744, 4.1978)
Luminance	0.0057 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Dark Navy

#000435

ΔE00 1.45

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#030B3B #3B3303

analogous

#03273B #030B3B #17033B

triadic

#030B3B #3B030B #0B3B03

tetradic

#030B3B #3B0327 #3B3303 #033B17

square

#030B3B #3B0327 #3B3303 #033B17

split-complementary

#030B3B #3B1703 #273B03

monochromatic

#01051D #01051D #030B3B #061675 #0921AF

Accessibility & contrast

On white

18.84

#030B3B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#030B3B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #030B3B

18.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##030B3B	#FFFFFF	#000000	##FFFFFF
##030B3B	1.00	18.84	1.11	18.84
#FFFFFF	18.84	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00143C

Deuteranopia (green-blind)

#000E3A

Tritanopia (blue-blind)

#001922

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #030b3b;
/* rgb */ color: rgb(3, 11, 59);
/* oklch */ color: oklch(18.6% 0.092 266.3);

Tailwind

colors: {
  custom: {
    50: '#4f4b71',
    500: '#030b3b',
    950: '#000000',
  },
}

SCSS

$custom: #030b3b;
$custom-light: #4f4b71;
$custom-dark: #000000;

JSON

{
  "hex": "#030b3b",
  "rgb": {
    "r": 3,
    "g": 11,
    "b": 59
  },
  "hsl": {
    "h": 231.429,
    "s": 90.323,
    "l": 12.157
  },
  "oklch": {
    "l": 0.18631,
    "c": 0.09224,
    "h": 266.3
  },
  "luminance": 0.00574
}

Semantic roles & 50–950 ramp

primary

#030B3B

secondary

#7E701C

accent

#E029FF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020108

muted

#78777B

Preview Lab

Preview with #030B3B

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

Preview Lab → · Contrast checker → · Palette generator →