#0F173A#0F173A

#0F173A is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.1% C 0.068 H 270.2°. Best body text is #FFFFFF at 17.44:1 contrast (WCAG AA passes).

Color values

HEX	#0F173A
RGB	rgb(15, 23, 58)
HSL	hsl(229, 59%, 14%)
HSV	hsv(229, 74%, 23%)
CMYK	cmyk(74.1%, 60.3%, 0%, 77.3%)
CIE-LAB	lab(9.15, 10.13, -23.84)
CIE-LCH	lch(9.15, 25.90, 293.01°)
OKLab	oklab(22.07% 0.0003 -0.0684)
OKLCH	oklch(22.07% 0.068 270.2)
XYZ	xyz(1.2669, 1.0197, 4.1322)
Luminance	0.0102 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F173A #3A320F

analogous

#0F2D3A #0F173A #1D0F3A

triadic

#0F173A #3A0F17 #173A0F

tetradic

#0F173A #3A0F2D #3A320F #0F3A1D

square

#0F173A #3A0F2D #3A320F #0F3A1D

split-complementary

#0F173A #3A1D0F #2D3A0F

monochromatic

#060A18 #060A18 #0F173A #1C2A6B #283E9B

Accessibility & contrast

On white

17.44

#0F173A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#0F173A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F173A

17.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F173A	#FFFFFF	#000000	##FFFFFF
##0F173A	1.00	17.44	1.20	17.44
#FFFFFF	17.44	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#041C3B

Deuteranopia (green-blind)

#001839

Tritanopia (blue-blind)

#001F25

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0f173a;
/* rgb */ color: rgb(15, 23, 58);
/* oklch */ color: oklch(22.1% 0.068 270.2);

Tailwind

colors: {
  custom: {
    50: '#535370',
    500: '#0f173a',
    950: '#000000',
  },
}

SCSS

$custom: #0f173a;
$custom-light: #535370;
$custom-dark: #000000;

JSON

{
  "hex": "#0f173a",
  "rgb": {
    "r": 15,
    "g": 23,
    "b": 58
  },
  "hsl": {
    "h": 228.837,
    "s": 58.904,
    "l": 14.314
  },
  "oklch": {
    "l": 0.22065,
    "c": 0.0684,
    "h": 270.2
  },
  "luminance": 0.0102
}

Semantic roles & 50–950 ramp

primary

#0F173A

secondary

#746830

accent

#C546E2

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#030207

muted

#78787A

Preview Lab

Preview with #0F173A

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

Preview Lab → · Contrast checker → · Palette generator →