#0B1F4D#0B1F4D

#0B1F4D is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.5% C 0.089 H 263.6°. Best body text is #FFFFFF at 15.94:1 contrast (WCAG AA passes).

Color values

HEX	#0B1F4D
RGB	rgb(11, 31, 77)
HSL	hsl(222, 75%, 17%)
HSV	hsv(222, 86%, 30%)
CMYK	cmyk(85.7%, 59.7%, 0%, 69.8%)
CIE-LAB	lab(13.15, 11.64, -30.70)
CIE-LCH	lch(13.15, 32.83, 290.76°)
OKLab	oklab(25.54% -0.0099 -0.0885)
OKLCH	oklch(25.54% 0.089 263.6)
XYZ	xyz(1.9671, 1.5867, 7.2223)
Luminance	0.0159 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1F4D #4D390B

analogous

#0B404D #0B1F4D #180B4D

triadic

#0B1F4D #4D0B1F #1F4D0B

tetradic

#0B1F4D #4D0B40 #4D390B #0B4D18

square

#0B1F4D #4D0B40 #4D390B #0B4D18

split-complementary

#0B1F4D #4D180B #404D0B

monochromatic

#040B1B #040B1B #0B1F4D #133583 #1A4AB8

Accessibility & contrast

On white

15.94

#0B1F4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#0B1F4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1F4D

15.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1F4D	#FFFFFF	#000000	##FFFFFF
##0B1F4D	1.00	15.94	1.32	15.94
#FFFFFF	15.94	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00254F

Deuteranopia (green-blind)

#001F4C

Tritanopia (blue-blind)

#002A32

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #0b1f4d;
/* rgb */ color: rgb(11, 31, 77);
/* oklch */ color: oklch(25.5% 0.089 263.6);

Tailwind

colors: {
  custom: {
    50: '#565a7f',
    500: '#0b1f4d',
    950: '#000000',
  },
}

SCSS

$custom: #0b1f4d;
$custom-light: #565a7f;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1f4d",
  "rgb": {
    "r": 11,
    "g": 31,
    "b": 77
  },
  "hsl": {
    "h": 221.818,
    "s": 75,
    "l": 17.255
  },
  "oklch": {
    "l": 0.2554,
    "c": 0.08908,
    "h": 263.6
  },
  "luminance": 0.01587
}

Semantic roles & 50–950 ramp

primary

#0B1F4D

secondary

#896C2B

accent

#B936F2

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#03030A

muted

#78787C

Preview Lab

Preview with #0B1F4D

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

Preview Lab → · Contrast checker → · Palette generator →