#0F1B5B#0F1B5B

#0F1B5B is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.2% C 0.115 H 268.5°. Best body text is #FFFFFF at 15.81:1 contrast (WCAG AA passes).

Color values

HEX	#0F1B5B
RGB	rgb(15, 27, 91)
HSL	hsl(231, 72%, 21%)
HSV	hsv(231, 84%, 36%)
CMYK	cmyk(83.5%, 70.3%, 0%, 64.3%)
CIE-LAB	lab(13.47, 21.19, -39.66)
CIE-LCH	lch(13.47, 44.97, 298.11°)
OKLab	oklab(26.25% -0.003 -0.1148)
OKLCH	oklch(26.25% 0.115 268.5)
XYZ	xyz(2.4766, 1.6405, 10.0816)
Luminance	0.0164 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F1B5B #5B4F0F

analogous

#0F415B #0F1B5B #290F5B

triadic

#0F1B5B #5B0F1B #1B5B0F

tetradic

#0F1B5B #5B0F41 #5B4F0F #0F5B29

square

#0F1B5B #5B0F41 #5B4F0F #0F5B29

split-complementary

#0F1B5B #5B290F #415B0F

monochromatic

#04081A #060B26 #0F1B5B #182B90 #203AC4

Accessibility & contrast

On white

15.81

#0F1B5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#0F1B5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F1B5B

15.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F1B5B	#FFFFFF	#000000	##FFFFFF
##0F1B5B	1.00	15.81	1.33	15.81
#FFFFFF	15.81	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265D

Deuteranopia (green-blind)

#001F5A

Tritanopia (blue-blind)

#002C38

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #0f1b5b;
/* rgb */ color: rgb(15, 27, 91);
/* oklch */ color: oklch(26.2% 0.115 268.5);

Tailwind

colors: {
  custom: {
    50: '#5c578a',
    500: '#0f1b5b',
    950: '#000000',
  },
}

SCSS

$custom: #0f1b5b;
$custom-light: #5c578a;
$custom-dark: #000000;

JSON

{
  "hex": "#0f1b5b",
  "rgb": {
    "r": 15,
    "g": 27,
    "b": 91
  },
  "hsl": {
    "h": 230.526,
    "s": 71.698,
    "l": 20.784
  },
  "oklch": {
    "l": 0.26247,
    "c": 0.11482,
    "h": 268.5
  },
  "luminance": 0.01641
}

Semantic roles & 50–950 ramp

primary

#0F1B5B

secondary

#958531

accent

#D239EE

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #0F1B5B

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

Preview Lab → · Contrast checker → · Palette generator →