#0A1D4E#0A1D4E

#0A1D4E is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.1% C 0.094 H 264.5°. Best body text is #FFFFFF at 16.17:1 contrast (WCAG AA passes).

Color values

HEX	#0A1D4E
RGB	rgb(10, 29, 78)
HSL	hsl(223, 77%, 17%)
HSV	hsv(223, 87%, 31%)
CMYK	cmyk(87.2%, 62.8%, 0%, 69.4%)
CIE-LAB	lab(12.56, 13.50, -32.34)
CIE-LCH	lch(12.56, 35.05, 292.66°)
OKLab	oklab(25.12% -0.0091 -0.0934)
OKLCH	oklch(25.12% 0.094 264.5)
XYZ	xyz(1.9392, 1.4931, 7.3922)
Luminance	0.0149 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A1D4E #4E3B0A

analogous

#0A3F4E #0A1D4E #190A4E

triadic

#0A1D4E #4E0A1D #1D4E0A

tetradic

#0A1D4E #4E0A3F #4E3B0A #0A4E19

square

#0A1D4E #4E0A3F #4E3B0A #0A4E19

split-complementary

#0A1D4E #4E190A #3F4E0A

monochromatic

#030A1B #030A1B #0A1D4E #113184 #1845BA

Accessibility & contrast

On white

16.17

#0A1D4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#0A1D4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A1D4E

16.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A1D4E	#FFFFFF	#000000	##FFFFFF
##0A1D4E	1.00	16.17	1.30	16.17
#FFFFFF	16.17	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002450

Deuteranopia (green-blind)

#001E4D

Tritanopia (blue-blind)

#002932

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #0a1d4e;
/* rgb */ color: rgb(10, 29, 78);
/* oklch */ color: oklch(25.1% 0.094 264.5);

Tailwind

colors: {
  custom: {
    50: '#575880',
    500: '#0a1d4e',
    950: '#000000',
  },
}

SCSS

$custom: #0a1d4e;
$custom-light: #575880;
$custom-dark: #000000;

JSON

{
  "hex": "#0a1d4e",
  "rgb": {
    "r": 10,
    "g": 29,
    "b": 78
  },
  "hsl": {
    "h": 223.235,
    "s": 77.273,
    "l": 17.255
  },
  "oklch": {
    "l": 0.25116,
    "c": 0.09384,
    "h": 264.5
  },
  "luminance": 0.01493
}

Semantic roles & 50–950 ramp

primary

#0A1D4E

secondary

#8B6F29

accent

#BE34F4

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #0A1D4E

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

Preview Lab → · Contrast checker → · Palette generator →