#05043F#05043F

#05043F is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.0% C 0.106 H 269.7°. Best body text is #FFFFFF at 19.17:1 contrast (WCAG AA passes).

Color values

HEX	#05043F
RGB	rgb(5, 4, 63)
HSL	hsl(241, 88%, 13%)
HSV	hsv(241, 94%, 25%)
CMYK	cmyk(92.1%, 93.7%, 0%, 75.3%)
CIE-LAB	lab(4.32, 22.09, -35.33)
CIE-LCH	lch(4.32, 41.67, 302.02°)
OKLab	oklab(17.97% -0.0006 -0.1061)
OKLCH	oklch(17.97% 0.106 269.7)
XYZ	xyz(1.0029, 0.4779, 4.7410)
Luminance	0.0048 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 2.37

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05043F #3E3F04

analogous

#04203F #05043F #22043F

triadic

#05043F #3F0504 #043F05

tetradic

#05043F #3F0420 #3E3F04 #043F22

square

#05043F #3F0420 #3E3F04 #043F22

split-complementary

#05043F #3F2204 #203F04

monochromatic

#02021D #02021D #05043F #0A0879 #0E0BB2

Accessibility & contrast

On white

19.17

#05043F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#05043F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05043F

19.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05043F	#FFFFFF	#000000	##FFFFFF
##05043F	1.00	19.17	1.10	19.17
#FFFFFF	19.17	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001241

Deuteranopia (green-blind)

#000C3E

Tritanopia (blue-blind)

#001722

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #05043f;
/* rgb */ color: rgb(5, 4, 63);
/* oklch */ color: oklch(18.0% 0.106 269.7);

Tailwind

colors: {
  custom: {
    50: '#514775',
    500: '#05043f',
    950: '#000000',
  },
}

SCSS

$custom: #05043f;
$custom-light: #514775;
$custom-dark: #000000;

JSON

{
  "hex": "#05043f",
  "rgb": {
    "r": 5,
    "g": 4,
    "b": 63
  },
  "hsl": {
    "h": 241.017,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.17965,
    "c": 0.10614,
    "h": 269.7
  },
  "luminance": 0.00478
}

Semantic roles & 50–950 ramp

primary

#05043F

secondary

#7F801E

accent

#FE2AFB

background

#F4F4F7

surface

#E7E6ED

border

#C3C2C8

text

#030008

muted

#78777B

Preview Lab

Preview with #05043F

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

Preview Lab → · Contrast checker → · Palette generator →