#0F255B#0F255B

#0F255B is a dark, moderate blue. Relative luminance 0.022; OKLCH L 28.4% C 0.101 H 264.2°. Best body text is #FFFFFF at 14.62:1 contrast (WCAG AA passes).

Color values

HEX	#0F255B
RGB	rgb(15, 37, 91)
HSL	hsl(223, 72%, 21%)
HSV	hsv(223, 84%, 36%)
CMYK	cmyk(83.5%, 59.3%, 0%, 64.3%)
CIE-LAB	lab(16.40, 13.76, -34.88)
CIE-LCH	lch(16.40, 37.50, 291.52°)
OKLab	oklab(28.43% -0.0102 -0.1006)
OKLCH	oklch(28.43% 0.101 264.2)
XYZ	xyz(2.7462, 2.1797, 10.1715)
Luminance	0.0218 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F255B #5B450F

analogous

#0F4B5B #0F255B #1F0F5B

triadic

#0F255B #5B0F25 #255B0F

tetradic

#0F255B #5B0F4B #5B450F #0F5B1F

square

#0F255B #5B0F4B #5B450F #0F5B1F

split-complementary

#0F255B #5B1F0F #4B5B0F

monochromatic

#040B1A #061026 #0F255B #183A90 #2050C4

Accessibility & contrast

On white

14.62

#0F255B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#0F255B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F255B

14.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F255B	#FFFFFF	#000000	##FFFFFF
##0F255B	1.00	14.62	1.44	14.62
#FFFFFF	14.62	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C5D

Deuteranopia (green-blind)

#00255A

Tritanopia (blue-blind)

#00323C

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #0f255b;
/* rgb */ color: rgb(15, 37, 91);
/* oklch */ color: oklch(28.4% 0.101 264.2);

Tailwind

colors: {
  custom: {
    50: '#5b5f8a',
    500: '#0f255b',
    950: '#000000',
  },
}

SCSS

$custom: #0f255b;
$custom-light: #5b5f8a;
$custom-dark: #000000;

JSON

{
  "hex": "#0f255b",
  "rgb": {
    "r": 15,
    "g": 37,
    "b": 91
  },
  "hsl": {
    "h": 222.632,
    "s": 71.698,
    "l": 20.784
  },
  "oklch": {
    "l": 0.28427,
    "c": 0.10113,
    "h": 264.2
  },
  "luminance": 0.0218
}

Semantic roles & 50–950 ramp

primary

#0F255B

secondary

#957831

accent

#BA39EE

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#04040C

muted

#79797D

Preview Lab

Preview with #0F255B

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

Preview Lab → · Contrast checker → · Palette generator →