#0B1F4E#0B1F4E

#0B1F4E is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.6% C 0.091 H 263.8°. Best body text is #FFFFFF at 15.91:1 contrast (WCAG AA passes).

Color values

HEX	#0B1F4E
RGB	rgb(11, 31, 78)
HSL	hsl(222, 75%, 17%)
HSV	hsv(222, 86%, 31%)
CMYK	cmyk(85.9%, 60.3%, 0%, 69.4%)
CIE-LAB	lab(13.24, 12.09, -31.25)
CIE-LCH	lch(13.24, 33.50, 291.14°)
OKLab	oklab(25.63% -0.0098 -0.0901)
OKLCH	oklch(25.63% 0.091 263.8)
XYZ	xyz(2.0027, 1.6009, 7.4097)
Luminance	0.0160 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1F4E #4E3A0B

analogous

#0B404E #0B1F4E #190B4E

triadic

#0B1F4E #4E0B1F #1F4E0B

tetradic

#0B1F4E #4E0B40 #4E3A0B #0B4E19

square

#0B1F4E #4E0B40 #4E3A0B #0B4E19

split-complementary

#0B1F4E #4E190B #404E0B

monochromatic

#040B1B #040B1B #0B1F4E #133484 #1A4AB9

Accessibility & contrast

On white

15.91

#0B1F4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#0B1F4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1F4E

15.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1F4E	#FFFFFF	#000000	##FFFFFF
##0B1F4E	1.00	15.91	1.32	15.91
#FFFFFF	15.91	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002550

Deuteranopia (green-blind)

#001F4D

Tritanopia (blue-blind)

#002B33

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #0b1f4e;
/* rgb */ color: rgb(11, 31, 78);
/* oklch */ color: oklch(25.6% 0.091 263.8);

Tailwind

colors: {
  custom: {
    50: '#575a80',
    500: '#0b1f4e',
    950: '#000000',
  },
}

SCSS

$custom: #0b1f4e;
$custom-light: #575a80;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1f4e",
  "rgb": {
    "r": 11,
    "g": 31,
    "b": 78
  },
  "hsl": {
    "h": 222.09,
    "s": 75.281,
    "l": 17.451
  },
  "oklch": {
    "l": 0.25634,
    "c": 0.09066,
    "h": 263.8
  },
  "luminance": 0.01601
}

Semantic roles & 50–950 ramp

primary

#0B1F4E

secondary

#8A6E2B

accent

#BA36F2

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #0B1F4E

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

Preview Lab → · Contrast checker → · Palette generator →