#0A1640#0A1640

#0A1640 is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.1% C 0.082 H 267.2°. Best body text is #FFFFFF at 17.47:1 contrast (WCAG AA passes).

Color values

HEX	#0A1640
RGB	rgb(10, 22, 64)
HSL	hsl(227, 73%, 15%)
HSV	hsv(227, 84%, 25%)
CMYK	cmyk(84.4%, 65.6%, 0%, 74.9%)
CIE-LAB	lab(9.06, 12.68, -28.29)
CIE-LCH	lch(9.06, 31.00, 294.15°)
OKLab	oklab(22.08% -0.004 -0.0816)
OKLCH	oklch(22.08% 0.082 267.2)
XYZ	xyz(1.3372, 1.0084, 4.9737)
Luminance	0.0101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A1640 #40340A

analogous

#0A3140 #0A1640 #190A40

triadic

#0A1640 #400A16 #16400A

tetradic

#0A1640 #400A31 #40340A #0A4019

square

#0A1640 #400A31 #40340A #0A4019

split-complementary

#0A1640 #40190A #31400A

monochromatic

#04091A #04091A #0A1640 #122875 #1B3AAA

Accessibility & contrast

On white

17.47

#0A1640 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#0A1640 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A1640

17.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A1640	#FFFFFF	#000000	##FFFFFF
##0A1640	1.00	17.47	1.20	17.47
#FFFFFF	17.47	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C41

Deuteranopia (green-blind)

#00173F

Tritanopia (blue-blind)

#002028

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0a1640;
/* rgb */ color: rgb(10, 22, 64);
/* oklch */ color: oklch(22.1% 0.082 267.2);

Tailwind

colors: {
  custom: {
    50: '#535275',
    500: '#0a1640',
    950: '#000000',
  },
}

SCSS

$custom: #0a1640;
$custom-light: #535275;
$custom-dark: #000000;

JSON

{
  "hex": "#0a1640",
  "rgb": {
    "r": 10,
    "g": 22,
    "b": 64
  },
  "hsl": {
    "h": 226.667,
    "s": 72.973,
    "l": 14.51
  },
  "oklch": {
    "l": 0.2208,
    "c": 0.08171,
    "h": 267.2
  },
  "luminance": 0.01009
}

Semantic roles & 50–950 ramp

primary

#0A1640

secondary

#7D6A29

accent

#C738F0

background

#F5F4F7

surface

#E8E7ED

border

#C4C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0A1640

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

Preview Lab → · Contrast checker → · Palette generator →