#0F285A#0F285A

#0F285A is a dark, moderate blue. Relative luminance 0.024; OKLCH L 29.0% C 0.095 H 262.2°. Best body text is #FFFFFF at 14.27:1 contrast (WCAG AA passes).

Color values

HEX	#0F285A
RGB	rgb(15, 40, 90)
HSL	hsl(220, 71%, 21%)
HSV	hsv(220, 83%, 35%)
CMYK	cmyk(83.3%, 55.6%, 0%, 64.7%)
CIE-LAB	lab(17.26, 11.07, -32.83)
CIE-LCH	lch(17.26, 34.64, 288.64°)
OKLab	oklab(29.05% -0.0129 -0.0945)
OKLCH	oklch(29.05% 0.095 262.2)
XYZ	xyz(2.8006, 2.3570, 9.9782)
Luminance	0.0236 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F285A #5A410F

analogous

#0F4D5A #0F285A #1B0F5A

triadic

#0F285A #5A0F28 #285A0F

tetradic

#0F285A #5A0F4D #5A410F #0F5A1B

square

#0F285A #5A0F4D #5A410F #0F5A1B

split-complementary

#0F285A #5A1B0F #4D5A0F

monochromatic

#040C1A #061126 #0F285A #183F8E #2057C3

Accessibility & contrast

On white

14.27

#0F285A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#0F285A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F285A

14.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F285A	#FFFFFF	#000000	##FFFFFF
##0F285A	1.00	14.27	1.47	14.27
#FFFFFF	14.27	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#072E5C

Deuteranopia (green-blind)

#002759

Tritanopia (blue-blind)

#00343C

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #0f285a;
/* rgb */ color: rgb(15, 40, 90);
/* oklch */ color: oklch(29.0% 0.095 262.2);

Tailwind

colors: {
  custom: {
    50: '#5b6189',
    500: '#0f285a',
    950: '#000000',
  },
}

SCSS

$custom: #0f285a;
$custom-light: #5b6189;
$custom-dark: #000000;

JSON

{
  "hex": "#0f285a",
  "rgb": {
    "r": 15,
    "g": 40,
    "b": 90
  },
  "hsl": {
    "h": 220,
    "s": 71.429,
    "l": 20.588
  },
  "oklch": {
    "l": 0.2905,
    "c": 0.09538,
    "h": 262.2
  },
  "luminance": 0.02357
}

Semantic roles & 50–950 ramp

primary

#0F285A

secondary

#947331

accent

#B23AEE

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#04050B

muted

#79797C

Preview Lab

Preview with #0F285A

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

Preview Lab → · Contrast checker → · Palette generator →