#0B033F#0B033F

#0B033F is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.3% C 0.105 H 275.7°. Best body text is #FFFFFF at 19.11:1 contrast (WCAG AA passes).

Color values

HEX#0B033F
RGBrgb(11, 3, 63)
HSLhsl(248, 91%, 13%)
HSVhsv(248, 95%, 25%)
CMYKcmyk(82.5%, 95.2%, 0%, 75.3%)
CIE-LABlab(4.47, 23.73, -35.07)
CIE-LCHlch(4.47, 42.34, 304.09°)
OKLaboklab(18.26% 0.0105 -0.1048)
OKLCHoklch(18.26% 0.105 275.7)
XYZxyz(1.0675, 0.4950, 4.7410)
Luminance0.0050 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#0B033F #373F03
analogous
#03193F #0B033F #29033F
triadic
#0B033F #3F0B03 #033F0B
tetradic
#0B033F #3F0319 #373F03 #033F29
square
#0B033F #3F0319 #373F03 #033F29
split-complementary
#0B033F #3F2903 #193F03
monochromatic
#05011D #05011D #0B033F #150679 #1F09B4

Accessibility & contrast

On white

19.11
#0B033F on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.10
#0B033F on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B033F
19.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##0B033F#FFFFFF#000000##FFFFFF
##0B033F1.0019.111.1019.11
#FFFFFF19.111.0021.001.00
#0000001.1021.001.0021.00
##FFFFFF19.111.0021.001.00

Color blindness preview

Protanopia (red-blind)
#001241
Deuteranopia (green-blind)
#000D3E
Tritanopia (blue-blind)
#001622
Achromatopsia (no color)
#0F0F0F

Design tokens & code

CSS
--color: #0b033f;
/* rgb */ color: rgb(11, 3, 63);
/* oklch */ color: oklch(18.3% 0.105 275.7);
Tailwind
colors: {
  custom: {
    50: '#544675',
    500: '#0b033f',
    950: '#000000',
  },
}
SCSS
$custom: #0b033f;
$custom-light: #544675;
$custom-dark: #000000;
JSON
{
  "hex": "#0b033f",
  "rgb": {
    "r": 11,
    "g": 3,
    "b": 63
  },
  "hsl": {
    "h": 248,
    "s": 90.909,
    "l": 12.941
  },
  "oklch": {
    "l": 0.18263,
    "c": 0.10532,
    "h": 275.7
  },
  "luminance": 0.00495
}

Semantic roles & 50–950 ramp

primary
#0B033F
secondary
#74811D
accent
#FF29E2
background
#F5F3F7
surface
#E9E5ED
border
#C5C1C8
text
#030008
muted
#78777B

Preview Lab

Preview with #0B033F

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

Preview Lab → · Contrast checker → · Palette generator →

#0B033F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva