#0F275A#0F275A

#0F275A is a dark, moderate blue. Relative luminance 0.023; OKLCH L 28.8% C 0.097 H 262.9°. Best body text is #FFFFFF at 14.40:1 contrast (WCAG AA passes).

Color values

HEX	#0F275A
RGB	rgb(15, 39, 90)
HSL	hsl(221, 71%, 21%)
HSV	hsv(221, 83%, 35%)
CMYK	cmyk(83.3%, 56.7%, 0%, 64.7%)
CIE-LAB	lab(16.94, 11.82, -33.34)
CIE-LCH	lch(16.94, 35.37, 289.52°)
OKLab	oklab(28.81% -0.012 -0.096)
OKLCH	oklch(28.81% 0.097 262.9)
XYZ	xyz(2.7673, 2.2905, 9.9671)
Luminance	0.0229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F275A #5A420F

analogous

#0F4C5A #0F275A #1C0F5A

triadic

#0F275A #5A0F27 #275A0F

tetradic

#0F275A #5A0F4C #5A420F #0F5A1C

square

#0F275A #5A0F4C #5A420F #0F5A1C

split-complementary

#0F275A #5A1C0F #4C5A0F

monochromatic

#040B1A #061026 #0F275A #183E8E #2054C3

Accessibility & contrast

On white

14.40

#0F275A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#0F275A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F275A

14.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F275A	#FFFFFF	#000000	##FFFFFF
##0F275A	1.00	14.40	1.46	14.40
#FFFFFF	14.40	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#042D5C

Deuteranopia (green-blind)

#002659

Tritanopia (blue-blind)

#00333C

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #0f275a;
/* rgb */ color: rgb(15, 39, 90);
/* oklch */ color: oklch(28.8% 0.097 262.9);

Tailwind

colors: {
  custom: {
    50: '#5b6089',
    500: '#0f275a',
    950: '#000000',
  },
}

SCSS

$custom: #0f275a;
$custom-light: #5b6089;
$custom-dark: #000000;

JSON

{
  "hex": "#0f275a",
  "rgb": {
    "r": 15,
    "g": 39,
    "b": 90
  },
  "hsl": {
    "h": 220.8,
    "s": 71.429,
    "l": 20.588
  },
  "oklch": {
    "l": 0.2881,
    "c": 0.09678,
    "h": 262.9
  },
  "luminance": 0.02291
}

Semantic roles & 50–950 ramp

primary

#0F275A

secondary

#947431

accent

#B43AEE

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#04040B

muted

#79797C

Preview Lab

Preview with #0F275A

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

Preview Lab → · Contrast checker → · Palette generator →