#143D78#143D78

#143D78 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.7% C 0.111 H 258.2°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#143D78
RGB	rgb(20, 61, 120)
HSL	hsl(215, 71%, 27%)
HSV	hsv(215, 83%, 47%)
CMYK	cmyk(83.3%, 49.2%, 0%, 52.9%)
CIE-LAB	lab(26.28, 9.34, -37.72)
CIE-LCH	lch(26.28, 38.85, 283.91°)
OKLab	oklab(36.73% -0.0227 -0.1084)
OKLCH	oklch(36.73% 0.111 258.2)
XYZ	xyz(5.3462, 4.8416, 18.4184)
Luminance	0.0484 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143D78 #784F14

analogous

#146F78 #143D78 #1D1478

triadic

#143D78 #78143D #3D7814

tetradic

#143D78 #78146F #784F14 #14781D

square

#143D78 #78146F #784F14 #14781D

split-complementary

#143D78 #781D14 #6F7814

monochromatic

#040D1A #0B2244 #143D78 #1D58AC #2B73DC

Accessibility & contrast

On white

10.67

#143D78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#143D78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143D78

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143D78	#FFFFFF	#000000	##FFFFFF
##143D78	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C437A

Deuteranopia (green-blind)

#003A77

Tritanopia (blue-blind)

#004B54

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #143d78;
/* rgb */ color: rgb(20, 61, 120);
/* oklch */ color: oklch(36.7% 0.111 258.2);

Tailwind

colors: {
  custom: {
    50: '#63719f',
    500: '#143d78',
    950: '#000000',
  },
}

SCSS

$custom: #143d78;
$custom-light: #63719f;
$custom-dark: #000000;

JSON

{
  "hex": "#143d78",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 120
  },
  "hsl": {
    "h": 215.4,
    "s": 71.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.3673,
    "c": 0.1107,
    "h": 258.2
  },
  "luminance": 0.04842
}

Semantic roles & 50–950 ramp

primary

#143D78

secondary

#AE7E3A

accent

#A43AEE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #143D78

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

Preview Lab → · Contrast checker → · Palette generator →