#0A0447#0A0447

#0A0447 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 19.5% C 0.115 H 272.7°. Best body text is #FFFFFF at 18.73:1 contrast (WCAG AA passes).

Color values

HEX	#0A0447
RGB	rgb(10, 4, 71)
HSL	hsl(245, 89%, 15%)
HSV	hsv(245, 94%, 28%)
CMYK	cmyk(85.9%, 94.4%, 0%, 72.2%)
CIE-LAB	lab(5.48, 27.17, -39.11)
CIE-LCH	lch(5.48, 47.63, 304.79°)
OKLab	oklab(19.52% 0.0055 -0.1147)
OKLCH	oklch(19.52% 0.115 272.7)
XYZ	xyz(1.3055, 0.6062, 6.0082)
Luminance	0.0061 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0447 #414704

analogous

#042047 #0A0447 #2C0447

triadic

#0A0447 #470A04 #04470A

tetradic

#0A0447 #470420 #414704 #04472C

square

#0A0447 #470420 #414704 #04472C

split-complementary

#0A0447 #472C04 #204704

monochromatic

#04021D #04021D #0A0447 #120781 #1A0BBB

Accessibility & contrast

On white

18.73

#0A0447 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#0A0447 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0447

18.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0447	#FFFFFF	#000000	##FFFFFF
##0A0447	1.00	18.73	1.12	18.73
#FFFFFF	18.73	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001549

Deuteranopia (green-blind)

#000F46

Tritanopia (blue-blind)

#001A27

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #0a0447;
/* rgb */ color: rgb(10, 4, 71);
/* oklch */ color: oklch(19.5% 0.115 272.7);

Tailwind

colors: {
  custom: {
    50: '#57477b',
    500: '#0a0447',
    950: '#000000',
  },
}

SCSS

$custom: #0a0447;
$custom-light: #57477b;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0447",
  "rgb": {
    "r": 10,
    "g": 4,
    "b": 71
  },
  "hsl": {
    "h": 245.373,
    "s": 89.333,
    "l": 14.706
  },
  "oklch": {
    "l": 0.19521,
    "c": 0.11484,
    "h": 272.7
  },
  "luminance": 0.00606
}

Semantic roles & 50–950 ramp

primary

#0A0447

secondary

#7E881F

accent

#FF29EC

background

#F5F4F7

surface

#E9E6EE

border

#C5C2C9

text

#040009

muted

#79777B

Preview Lab

Preview with #0A0447

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

Preview Lab → · Contrast checker → · Palette generator →