#05143B#05143B

#05143B is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.8% C 0.079 H 263.9°. Best body text is #FFFFFF at 17.95:1 contrast (WCAG AA passes).

Color values

HEX	#05143B
RGB	rgb(5, 20, 59)
HSL	hsl(223, 84%, 13%)
HSV	hsv(223, 92%, 23%)
CMYK	cmyk(91.5%, 66.1%, 0%, 76.9%)
CIE-LAB	lab(7.66, 11.17, -27.01)
CIE-LCH	lch(7.66, 29.23, 292.47°)
OKLab	oklab(20.8% -0.0083 -0.078)
OKLCH	oklch(20.8% 0.079 263.9)
XYZ	xyz(1.1019, 0.8482, 4.2425)
Luminance	0.0085 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05143B #3B2C05

analogous

#052F3B #05143B #11053B

triadic

#05143B #3B0514 #143B05

tetradic

#05143B #3B052F #3B2C05 #053B11

square

#05143B #3B052F #3B2C05 #053B11

split-complementary

#05143B #3B1105 #2F3B05

monochromatic

#020A1C #020A1C #05143B #0A2773 #0F3AAC

Accessibility & contrast

On white

17.95

#05143B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#05143B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05143B

17.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05143B	#FFFFFF	#000000	##FFFFFF
##05143B	1.00	17.95	1.17	17.95
#FFFFFF	17.95	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00193C

Deuteranopia (green-blind)

#00143A

Tritanopia (blue-blind)

#001E25

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #05143b;
/* rgb */ color: rgb(5, 20, 59);
/* oklch */ color: oklch(20.8% 0.079 263.9);

Tailwind

colors: {
  custom: {
    50: '#4f5071',
    500: '#05143b',
    950: '#000000',
  },
}

SCSS

$custom: #05143b;
$custom-light: #4f5071;
$custom-dark: #000000;

JSON

{
  "hex": "#05143b",
  "rgb": {
    "r": 5,
    "g": 20,
    "b": 59
  },
  "hsl": {
    "h": 223.333,
    "s": 84.375,
    "l": 12.549
  },
  "oklch": {
    "l": 0.20799,
    "c": 0.0785,
    "h": 263.9
  },
  "luminance": 0.00848
}

Semantic roles & 50–950 ramp

primary

#05143B

secondary

#7C6220

accent

#C22DFB

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020208

muted

#78787B

Preview Lab

Preview with #05143B

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

Preview Lab → · Contrast checker → · Palette generator →