#143B79#143B79

#143B79 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.3% C 0.115 H 259.5°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#143B79
RGB	rgb(20, 59, 121)
HSL	hsl(217, 72%, 28%)
HSV	hsv(217, 83%, 47%)
CMYK	cmyk(83.5%, 51.2%, 0%, 52.5%)
CIE-LAB	lab(25.73, 11.17, -39.23)
CIE-LCH	lch(25.73, 40.79, 285.89°)
OKLab	oklab(36.33% -0.0208 -0.1128)
OKLCH	oklch(36.33% 0.115 259.5)
XYZ	xyz(5.3024, 4.6565, 18.7048)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143B79 #795214

analogous

#146D79 #143B79 #201479

triadic

#143B79 #79143B #3B7914

tetradic

#143B79 #79146D #795214 #147920

square

#143B79 #79146D #795214 #147920

split-complementary

#143B79 #792014 #6D7914

monochromatic

#040D1A #0B2144 #143B79 #1D55AE #2B70DC

Accessibility & contrast

On white

10.87

#143B79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#143B79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B79

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143B79	#FFFFFF	#000000	##FFFFFF
##143B79	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16427B

Deuteranopia (green-blind)

#003978

Tritanopia (blue-blind)

#004A54

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #143b79;
/* rgb */ color: rgb(20, 59, 121);
/* oklch */ color: oklch(36.3% 0.115 259.5);

Tailwind

colors: {
  custom: {
    50: '#6470a0',
    500: '#143b79',
    950: '#000000',
  },
}

SCSS

$custom: #143b79;
$custom-light: #6470a0;
$custom-dark: #000000;

JSON

{
  "hex": "#143b79",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 121
  },
  "hsl": {
    "h": 216.832,
    "s": 71.631,
    "l": 27.647
  },
  "oklch": {
    "l": 0.36334,
    "c": 0.11475,
    "h": 259.5
  },
  "luminance": 0.04657
}

Semantic roles & 50–950 ramp

primary

#143B79

secondary

#AF823A

accent

#A939EE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070F

muted

#7A7A7E

Preview Lab

Preview with #143B79

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

Preview Lab → · Contrast checker → · Palette generator →