#0F285B#0F285B

#0F285B is a dark, moderate blue. Relative luminance 0.024; OKLCH L 29.1% C 0.097 H 262.4°. Best body text is #FFFFFF at 14.24:1 contrast (WCAG AA passes).

Color values

HEX	#0F285B
RGB	rgb(15, 40, 91)
HSL	hsl(220, 72%, 21%)
HSV	hsv(220, 84%, 36%)
CMYK	cmyk(83.5%, 56%, 0%, 64.3%)
CIE-LAB	lab(17.34, 11.51, -33.36)
CIE-LCH	lch(17.34, 35.29, 289.04°)
OKLab	oklab(29.14% -0.0128 -0.0961)
OKLCH	oklch(29.14% 0.097 262.4)
XYZ	xyz(2.8434, 2.3741, 10.2039)
Luminance	0.0237 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F285B #5B420F

analogous

#0F4E5B #0F285B #1C0F5B

triadic

#0F285B #5B0F28 #285B0F

tetradic

#0F285B #5B0F4E #5B420F #0F5B1C

square

#0F285B #5B0F4E #5B420F #0F5B1C

split-complementary

#0F285B #5B1C0F #4E5B0F

monochromatic

#040C1A #061126 #0F285B #183F90 #2056C4

Accessibility & contrast

On white

14.24

#0F285B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#0F285B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F285B

14.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F285B	#FFFFFF	#000000	##FFFFFF
##0F285B	1.00	14.24	1.47	14.24
#FFFFFF	14.24	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#052E5D

Deuteranopia (green-blind)

#00275A

Tritanopia (blue-blind)

#00343D

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #0f285b;
/* rgb */ color: rgb(15, 40, 91);
/* oklch */ color: oklch(29.1% 0.097 262.4);

Tailwind

colors: {
  custom: {
    50: '#5b618a',
    500: '#0f285b',
    950: '#000000',
  },
}

SCSS

$custom: #0f285b;
$custom-light: #5b618a;
$custom-dark: #000000;

JSON

{
  "hex": "#0f285b",
  "rgb": {
    "r": 15,
    "g": 40,
    "b": 91
  },
  "hsl": {
    "h": 220.263,
    "s": 71.698,
    "l": 20.784
  },
  "oklch": {
    "l": 0.29137,
    "c": 0.09692,
    "h": 262.4
  },
  "luminance": 0.02374
}

Semantic roles & 50–950 ramp

primary

#0F285B

secondary

#957431

accent

#B339EE

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#04050C

muted

#79797D

Preview Lab

Preview with #0F285B

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

Preview Lab → · Contrast checker → · Palette generator →