#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
RGBrgb(3, 11, 59)
HSLhsl(231, 90%, 12%)
HSVhsv(231, 95%, 23%)
CMYKcmyk(94.9%, 81.4%, 0%, 76.9%)
CIE-LABlab(5.19, 16.24, -31.03)
CIE-LCHlch(5.19, 35.02, 297.62°)
OKLaboklab(18.63% -0.0059 -0.0921)
OKLCHoklch(18.63% 0.092 266.3)
XYZxyz(0.9464, 0.5744, 4.1978)
Luminance0.0057 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

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
##030B3B1.0018.841.1118.84
#FFFFFF18.841.0021.001.00
#0000001.1121.001.0021.00
##FFFFFF18.841.0021.001.00

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 →

#030B3B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva