#143D84#143D84

#143D84 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 37.7% C 0.128 H 260.6°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#143D84
RGB	rgb(20, 61, 132)
HSL	hsl(218, 74%, 30%)
HSV	hsv(218, 85%, 52%)
CMYK	cmyk(84.8%, 53.8%, 0%, 48.2%)
CIE-LAB	lab(27.16, 14.37, -43.82)
CIE-LCH	lch(27.16, 46.12, 288.15°)
OKLab	oklab(37.69% -0.0208 -0.1263)
OKLCH	oklch(37.69% 0.128 260.6)
XYZ	xyz(6.1206, 5.1514, 22.4971)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143D84 #845B14

analogous

#147584 #143D84 #231484

triadic

#143D84 #84143D #3D8414

tetradic

#143D84 #841475 #845B14 #148423

square

#143D84 #841475 #845B14 #148423

split-complementary

#143D84 #842314 #758414

monochromatic

#040C1B #0C244F #143D84 #1C56B9 #3272E0

Accessibility & contrast

On white

10.34

#143D84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#143D84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143D84

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143D84	#FFFFFF	#000000	##FFFFFF
##143D84	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A4687

Deuteranopia (green-blind)

#003B83

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #143d84;
/* rgb */ color: rgb(20, 61, 132);
/* oklch */ color: oklch(37.7% 0.128 260.6);

Tailwind

colors: {
  custom: {
    50: '#6771a8',
    500: '#143d84',
    950: '#000000',
  },
}

SCSS

$custom: #143d84;
$custom-light: #6771a8;
$custom-dark: #000000;

JSON

{
  "hex": "#143d84",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 132
  },
  "hsl": {
    "h": 218.036,
    "s": 73.684,
    "l": 29.804
  },
  "oklch": {
    "l": 0.37689,
    "c": 0.12802,
    "h": 260.6
  },
  "luminance": 0.05152
}

Semantic roles & 50–950 ramp

primary

#143D84

secondary

#B98B3B

accent

#AD37F0

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #143D84

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

Preview Lab → · Contrast checker → · Palette generator →