#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
RGB	rgb(11, 3, 63)
HSL	hsl(248, 91%, 13%)
HSV	hsv(248, 95%, 25%)
CMYK	cmyk(82.5%, 95.2%, 0%, 75.3%)
CIE-LAB	lab(4.47, 23.73, -35.07)
CIE-LCH	lch(4.47, 42.34, 304.09°)
OKLab	oklab(18.26% 0.0105 -0.1048)
OKLCH	oklch(18.26% 0.105 275.7)
XYZ	xyz(1.0675, 0.4950, 4.7410)
Luminance	0.0050 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 2.19

Midnight Blue (survey)

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
##0B033F	1.00	19.11	1.10	19.11
#FFFFFF	19.11	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.11	1.00	21.00	1.00

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 →