#0B033B#0B033B

#0B033B is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.7% C 0.100 H 276.9°. Best body text is #FFFFFF at 19.26:1 contrast (WCAG AA passes).

Color values

HEX	#0B033B
RGB	rgb(11, 3, 59)
HSL	hsl(249, 90%, 12%)
HSV	hsv(249, 95%, 23%)
CMYK	cmyk(81.4%, 94.9%, 0%, 76.9%)
CIE-LAB	lab(4.08, 21.51, -32.81)
CIE-LCH	lch(4.08, 39.23, 303.25°)
OKLab	oklab(17.69% 0.0121 -0.0993)
OKLCH	oklch(17.69% 0.1 276.9)
XYZ	xyz(0.9597, 0.4519, 4.1735)
Luminance	0.0045 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B033B #333B03

analogous

#03173B #0B033B #27033B

triadic

#0B033B #3B0B03 #033B0B

tetradic

#0B033B #3B0317 #333B03 #033B27

square

#0B033B #3B0317 #333B03 #033B27

split-complementary

#0B033B #3B2703 #173B03

monochromatic

#05011D #05011D #0B033B #160675 #2109AF

Accessibility & contrast

On white

19.26

#0B033B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#0B033B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B033B

19.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B033B	#FFFFFF	#000000	##FFFFFF
##0B033B	1.00	19.26	1.09	19.26
#FFFFFF	19.26	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00113D

Deuteranopia (green-blind)

#000C3A

Tritanopia (blue-blind)

#00141F

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #0b033b;
/* rgb */ color: rgb(11, 3, 59);
/* oklch */ color: oklch(17.7% 0.100 276.9);

Tailwind

colors: {
  custom: {
    50: '#524772',
    500: '#0b033b',
    950: '#000000',
  },
}

SCSS

$custom: #0b033b;
$custom-light: #524772;
$custom-dark: #000000;

JSON

{
  "hex": "#0b033b",
  "rgb": {
    "r": 11,
    "g": 3,
    "b": 59
  },
  "hsl": {
    "h": 248.571,
    "s": 90.323,
    "l": 12.157
  },
  "oklch": {
    "l": 0.17691,
    "c": 0.1,
    "h": 276.9
  },
  "luminance": 0.00452
}

Semantic roles & 50–950 ramp

primary

#0B033B

secondary

#707E1C

accent

#FF29E0

background

#F4F3F6

surface

#E8E5EC

border

#C4C1C7

text

#030008

muted

#78777B

Preview Lab

Preview with #0B033B

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

Preview Lab → · Contrast checker → · Palette generator →