#05043B#05043B

#05043B is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 17.4% C 0.101 H 270.3°. Best body text is #FFFFFF at 19.32:1 contrast (WCAG AA passes).

Color values

HEX	#05043B
RGB	rgb(5, 4, 59)
HSL	hsl(241, 87%, 12%)
HSV	hsv(241, 93%, 23%)
CMYK	cmyk(91.5%, 93.2%, 0%, 76.9%)
CIE-LAB	lab(3.93, 19.70, -33.08)
CIE-LCH	lch(3.93, 38.50, 300.77°)
OKLab	oklab(17.38% 0.0005 -0.1007)
OKLCH	oklch(17.38% 0.101 270.3)
XYZ	xyz(0.8952, 0.4348, 4.1736)
Luminance	0.0043 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05043B #3A3B04

analogous

#041F3B #05043B #21043B

triadic

#05043B #3B0504 #043B05

tetradic

#05043B #3B041F #3A3B04 #043B21

square

#05043B #3B041F #3A3B04 #043B21

split-complementary

#05043B #3B2104 #1F3B04

monochromatic

#02021D #02021D #05043B #0A0874 #0F0CAE

Accessibility & contrast

On white

19.32

#05043B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#05043B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05043B

19.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05043B	#FFFFFF	#000000	##FFFFFF
##05043B	1.00	19.32	1.09	19.32
#FFFFFF	19.32	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00113D

Deuteranopia (green-blind)

#000B3A

Tritanopia (blue-blind)

#001520

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #05043b;
/* rgb */ color: rgb(5, 4, 59);
/* oklch */ color: oklch(17.4% 0.101 270.3);

Tailwind

colors: {
  custom: {
    50: '#4f4772',
    500: '#05043b',
    950: '#000000',
  },
}

SCSS

$custom: #05043b;
$custom-light: #4f4772;
$custom-dark: #000000;

JSON

{
  "hex": "#05043b",
  "rgb": {
    "r": 5,
    "g": 4,
    "b": 59
  },
  "hsl": {
    "h": 241.091,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.17376,
    "c": 0.1007,
    "h": 270.3
  },
  "luminance": 0.00435
}

Semantic roles & 50–950 ramp

primary

#05043B

secondary

#7B7D1E

accent

#FD2AFA

background

#F4F4F6

surface

#E7E6EC

border

#C3C2C7

text

#020008

muted

#78777B

Preview Lab

Preview with #05043B

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

Preview Lab → · Contrast checker → · Palette generator →