#0B1F4C#0B1F4C

#0B1F4C is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.4% C 0.087 H 263.4°. Best body text is #FFFFFF at 15.97:1 contrast (WCAG AA passes).

Color values

HEX	#0B1F4C
RGB	rgb(11, 31, 76)
HSL	hsl(222, 75%, 17%)
HSV	hsv(222, 86%, 30%)
CMYK	cmyk(85.5%, 59.2%, 0%, 70.2%)
CIE-LAB	lab(13.06, 11.18, -30.16)
CIE-LCH	lch(13.06, 32.16, 290.35°)
OKLab	oklab(25.45% -0.01 -0.0869)
OKLCH	oklch(25.45% 0.088 263.4)
XYZ	xyz(1.9320, 1.5727, 7.0378)
Luminance	0.0157 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1F4C #4C380B

analogous

#0B404C #0B1F4C #170B4C

triadic

#0B1F4C #4C0B1F #1F4C0B

tetradic

#0B1F4C #4C0B40 #4C380B #0B4C17

square

#0B1F4C #4C0B40 #4C380B #0B4C17

split-complementary

#0B1F4C #4C170B #404C0B

monochromatic

#040B1B #040B1B #0B1F4C #133581 #1A4BB7

Accessibility & contrast

On white

15.97

#0B1F4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#0B1F4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1F4C

15.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1F4C	#FFFFFF	#000000	##FFFFFF
##0B1F4C	1.00	15.97	1.31	15.97
#FFFFFF	15.97	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	15.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00254E

Deuteranopia (green-blind)

#001F4B

Tritanopia (blue-blind)

#002A32

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #0b1f4c;
/* rgb */ color: rgb(11, 31, 76);
/* oklch */ color: oklch(25.4% 0.087 263.4);

Tailwind

colors: {
  custom: {
    50: '#565a7e',
    500: '#0b1f4c',
    950: '#000000',
  },
}

SCSS

$custom: #0b1f4c;
$custom-light: #565a7e;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1f4c",
  "rgb": {
    "r": 11,
    "g": 31,
    "b": 76
  },
  "hsl": {
    "h": 221.538,
    "s": 74.713,
    "l": 17.059
  },
  "oklch": {
    "l": 0.25448,
    "c": 0.0875,
    "h": 263.4
  },
  "luminance": 0.01573
}

Semantic roles & 50–950 ramp

primary

#0B1F4C

secondary

#886B2B

accent

#B836F1

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#03030A

muted

#78787C

Preview Lab

Preview with #0B1F4C

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

Preview Lab → · Contrast checker → · Palette generator →