#0B042F#0B042F

#0B042F is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 16.3% C 0.082 H 281.2°. Best body text is #FFFFFF at 19.58:1 contrast (WCAG AA passes).

Color values

HEX	#0B042F
RGB	rgb(11, 4, 47)
HSL	hsl(250, 84%, 10%)
HSV	hsv(250, 91%, 18%)
CMYK	cmyk(76.6%, 91.5%, 0%, 81.6%)
CIE-LAB	lab(3.28, 14.30, -25.24)
CIE-LCH	lch(3.28, 29.01, 299.54°)
OKLab	oklab(16.27% 0.0158 -0.08)
OKLCH	oklch(16.27% 0.082 281.2)
XYZ	xyz(0.6944, 0.3632, 2.7223)
Luminance	0.0036 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B042F #282F04

analogous

#04132F #0B042F #20042F

triadic

#0B042F #2F0B04 #042F0B

tetradic

#0B042F #2F0413 #282F04 #042F20

square

#0B042F #2F0413 #282F04 #042F20

split-complementary

#0B042F #2F2004 #132F04

monochromatic

#07021C #07021C #0B042F #180967 #250EA0

Accessibility & contrast

On white

19.58

#0B042F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#0B042F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B042F

19.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B042F	#FFFFFF	#000000	##FFFFFF
##0B042F	1.00	19.58	1.07	19.58
#FFFFFF	19.58	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000D30

Deuteranopia (green-blind)

#000A2E

Tritanopia (blue-blind)

#001019

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #0b042f;
/* rgb */ color: rgb(11, 4, 47);
/* oklch */ color: oklch(16.3% 0.082 281.2);

Tailwind

colors: {
  custom: {
    50: '#4e4868',
    500: '#0b042f',
    950: '#000000',
  },
}

SCSS

$custom: #0b042f;
$custom-light: #4e4868;
$custom-dark: #000000;

JSON

{
  "hex": "#0b042f",
  "rgb": {
    "r": 11,
    "g": 4,
    "b": 47
  },
  "hsl": {
    "h": 249.767,
    "s": 84.314,
    "l": 10
  },
  "oklch": {
    "l": 0.16273,
    "c": 0.0816,
    "h": 281.2
  },
  "luminance": 0.00363
}

Semantic roles & 50–950 ramp

primary

#0B042F

secondary

#64721D

accent

#FB2DD9

background

#F4F4F6

surface

#E7E6EB

border

#C3C2C6

text

#020006

muted

#78777A

Preview Lab

Preview with #0B042F

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

Preview Lab → · Contrast checker → · Palette generator →