#0A1840#0A1840

#0A1840 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.6% C 0.079 H 265.7°. Best body text is #FFFFFF at 17.25:1 contrast (WCAG AA passes).

Color values

HEX	#0A1840
RGB	rgb(10, 24, 64)
HSL	hsl(224, 73%, 15%)
HSV	hsv(224, 84%, 25%)
CMYK	cmyk(84.4%, 62.5%, 0%, 74.9%)
CIE-LAB	lab(9.70, 11.10, -27.24)
CIE-LCH	lch(9.70, 29.42, 292.17°)
OKLab	oklab(22.56% -0.0058 -0.0785)
OKLCH	oklch(22.56% 0.079 265.7)
XYZ	xyz(1.3769, 1.0878, 4.9869)
Luminance	0.0109 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A1840 #40320A

analogous

#0A3340 #0A1840 #170A40

triadic

#0A1840 #400A18 #18400A

tetradic

#0A1840 #400A33 #40320A #0A4017

square

#0A1840 #400A33 #40320A #0A4017

split-complementary

#0A1840 #40170A #33400A

monochromatic

#040A1A #040A1A #0A1840 #122C75 #1B40AA

Accessibility & contrast

On white

17.25

#0A1840 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#0A1840 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A1840

17.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A1840	#FFFFFF	#000000	##FFFFFF
##0A1840	1.00	17.25	1.22	17.25
#FFFFFF	17.25	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D41

Deuteranopia (green-blind)

#00183F

Tritanopia (blue-blind)

#002229

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #0a1840;
/* rgb */ color: rgb(10, 24, 64);
/* oklch */ color: oklch(22.6% 0.079 265.7);

Tailwind

colors: {
  custom: {
    50: '#535475',
    500: '#0a1840',
    950: '#000000',
  },
}

SCSS

$custom: #0a1840;
$custom-light: #535475;
$custom-dark: #000000;

JSON

{
  "hex": "#0a1840",
  "rgb": {
    "r": 10,
    "g": 24,
    "b": 64
  },
  "hsl": {
    "h": 224.444,
    "s": 72.973,
    "l": 14.51
  },
  "oklch": {
    "l": 0.22562,
    "c": 0.07873,
    "h": 265.7
  },
  "luminance": 0.01088
}

Semantic roles & 50–950 ramp

primary

#0A1840

secondary

#7D6729

accent

#C038F0

background

#F4F4F7

surface

#E8E7ED

border

#C4C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0A1840

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

Preview Lab → · Contrast checker → · Palette generator →