#0F275B#0F275B

#0F275B is a dark, moderate blue. Relative luminance 0.023; OKLCH L 28.9% C 0.098 H 263.0°. Best body text is #FFFFFF at 14.37:1 contrast (WCAG AA passes).

Color values

HEX	#0F275B
RGB	rgb(15, 39, 91)
HSL	hsl(221, 72%, 21%)
HSV	hsv(221, 84%, 36%)
CMYK	cmyk(83.5%, 57.1%, 0%, 64.3%)
CIE-LAB	lab(17.03, 12.26, -33.87)
CIE-LCH	lch(17.03, 36.02, 289.90°)
OKLab	oklab(28.9% -0.0119 -0.0976)
OKLCH	oklch(28.9% 0.098 263)
XYZ	xyz(2.8102, 2.3076, 10.1928)
Luminance	0.0231 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F275B #5B430F

analogous

#0F4D5B #0F275B #1D0F5B

triadic

#0F275B #5B0F27 #275B0F

tetradic

#0F275B #5B0F4D #5B430F #0F5B1D

square

#0F275B #5B0F4D #5B430F #0F5B1D

split-complementary

#0F275B #5B1D0F #4D5B0F

monochromatic

#040B1A #061026 #0F275B #183E90 #2054C4

Accessibility & contrast

On white

14.37

#0F275B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#0F275B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F275B

14.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F275B	#FFFFFF	#000000	##FFFFFF
##0F275B	1.00	14.37	1.46	14.37
#FFFFFF	14.37	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#022E5D

Deuteranopia (green-blind)

#00275A

Tritanopia (blue-blind)

#00343C

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #0f275b;
/* rgb */ color: rgb(15, 39, 91);
/* oklch */ color: oklch(28.9% 0.098 263.0);

Tailwind

colors: {
  custom: {
    50: '#5b608a',
    500: '#0f275b',
    950: '#000000',
  },
}

SCSS

$custom: #0f275b;
$custom-light: #5b608a;
$custom-dark: #000000;

JSON

{
  "hex": "#0f275b",
  "rgb": {
    "r": 15,
    "g": 39,
    "b": 91
  },
  "hsl": {
    "h": 221.053,
    "s": 71.698,
    "l": 20.784
  },
  "oklch": {
    "l": 0.28898,
    "c": 0.09832,
    "h": 263
  },
  "luminance": 0.02308
}

Semantic roles & 50–950 ramp

primary

#0F275B

secondary

#957531

accent

#B539EE

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#04040C

muted

#79797D

Preview Lab

Preview with #0F275B

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

Preview Lab → · Contrast checker → · Palette generator →