#0A193B#0A193B

#0A193B is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.4% C 0.069 H 263.8°. Best body text is #FFFFFF at 17.28:1 contrast (WCAG AA passes).

Color values

HEX	#0A193B
RGB	rgb(10, 25, 59)
HSL	hsl(222, 71%, 14%)
HSV	hsv(222, 83%, 23%)
CMYK	cmyk(83.1%, 57.6%, 0%, 76.9%)
CIE-LAB	lab(9.60, 8.03, -23.85)
CIE-LCH	lch(9.60, 25.16, 288.61°)
OKLab	oklab(22.35% -0.0074 -0.0685)
OKLCH	oklch(22.35% 0.069 263.8)
XYZ	xyz(1.2619, 1.0754, 4.2779)
Luminance	0.0108 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A193B #3B2C0A

analogous

#0A313B #0A193B #130A3B

triadic

#0A193B #3B0A19 #193B0A

tetradic

#0A193B #3B0A31 #3B2C0A #0A3B13

square

#0A193B #3B0A31 #3B2C0A #0A3B13

split-complementary

#0A193B #3B130A #313B0A

monochromatic

#040B1A #040B1A #0A193B #132F6F #1C45A4

Accessibility & contrast

On white

17.28

#0A193B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#0A193B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A193B

17.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A193B	#FFFFFF	#000000	##FFFFFF
##0A193B	1.00	17.28	1.22	17.28
#FFFFFF	17.28	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#061D3C

Deuteranopia (green-blind)

#00193A

Tritanopia (blue-blind)

#002127

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #0a193b;
/* rgb */ color: rgb(10, 25, 59);
/* oklch */ color: oklch(22.4% 0.069 263.8);

Tailwind

colors: {
  custom: {
    50: '#515571',
    500: '#0a193b',
    950: '#000000',
  },
}

SCSS

$custom: #0a193b;
$custom-light: #515571;
$custom-dark: #000000;

JSON

{
  "hex": "#0a193b",
  "rgb": {
    "r": 10,
    "g": 25,
    "b": 59
  },
  "hsl": {
    "h": 221.633,
    "s": 71.014,
    "l": 13.529
  },
  "oklch": {
    "l": 0.22351,
    "c": 0.0689,
    "h": 263.8
  },
  "luminance": 0.01076
}

Semantic roles & 50–950 ramp

primary

#0A193B

secondary

#786028

accent

#B73AEE

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #0A193B

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

Preview Lab → · Contrast checker → · Palette generator →