#0A1541#0A1541

#0A1541 is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.9% C 0.085 H 267.9°. Best body text is #FFFFFF at 17.55:1 contrast (WCAG AA passes).

Color values

HEX	#0A1541
RGB	rgb(10, 21, 65)
HSL	hsl(228, 73%, 15%)
HSV	hsv(228, 85%, 25%)
CMYK	cmyk(84.6%, 67.7%, 0%, 74.5%)
CIE-LAB	lab(8.84, 13.92, -29.35)
CIE-LCH	lch(8.84, 32.48, 295.37°)
OKLab	oklab(21.95% -0.0032 -0.0848)
OKLCH	oklch(21.95% 0.085 267.9)
XYZ	xyz(1.3471, 0.9824, 5.1186)
Luminance	0.0098 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A1541 #41360A

analogous

#0A3141 #0A1541 #1B0A41

triadic

#0A1541 #410A15 #15410A

tetradic

#0A1541 #410A31 #41360A #0A411B

square

#0A1541 #410A31 #41360A #0A411B

split-complementary

#0A1541 #411B0A #31410A

monochromatic

#04091B #04091B #0A1541 #122676 #1A37AB

Accessibility & contrast

On white

17.55

#0A1541 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#0A1541 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A1541

17.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A1541	#FFFFFF	#000000	##FFFFFF
##0A1541	1.00	17.55	1.20	17.55
#FFFFFF	17.55	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C42

Deuteranopia (green-blind)

#001740

Tritanopia (blue-blind)

#002028

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #0a1541;
/* rgb */ color: rgb(10, 21, 65);
/* oklch */ color: oklch(21.9% 0.085 267.9);

Tailwind

colors: {
  custom: {
    50: '#535176',
    500: '#0a1541',
    950: '#000000',
  },
}

SCSS

$custom: #0a1541;
$custom-light: #535176;
$custom-dark: #000000;

JSON

{
  "hex": "#0a1541",
  "rgb": {
    "r": 10,
    "g": 21,
    "b": 65
  },
  "hsl": {
    "h": 228,
    "s": 73.333,
    "l": 14.706
  },
  "oklch": {
    "l": 0.21948,
    "c": 0.08481,
    "h": 267.9
  },
  "luminance": 0.00983
}

Semantic roles & 50–950 ramp

primary

#0A1541

secondary

#7E6D29

accent

#CB38F0

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0A1541

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

Preview Lab → · Contrast checker → · Palette generator →