#143B7D#143B7D

#143B7D is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.7% C 0.121 H 260.3°. Best body text is #FFFFFF at 10.76:1 contrast (WCAG AA passes).

Color values

HEX	#143B7D
RGB	rgb(20, 59, 125)
HSL	hsl(218, 72%, 28%)
HSV	hsv(218, 84%, 49%)
CMYK	cmyk(84%, 52.8%, 0%, 51%)
CIE-LAB	lab(26.03, 12.85, -41.27)
CIE-LCH	lch(26.03, 43.22, 287.29°)
OKLab	oklab(36.66% -0.0202 -0.1189)
OKLCH	oklch(36.66% 0.121 260.3)
XYZ	xyz(5.5528, 4.7566, 20.0235)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143B7D #7D5614

analogous

#146F7D #143B7D #21147D

triadic

#143B7D #7D143B #3B7D14

tetradic

#143B7D #7D146F #7D5614 #147D21

square

#143B7D #7D146F #7D5614 #147D21

split-complementary

#143B7D #7D2114 #6F7D14

monochromatic

#040C1A #0C2248 #143B7D #1C54B2 #2E6FDE

Accessibility & contrast

On white

10.76

#143B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#143B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B7D

10.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143B7D	#FFFFFF	#000000	##FFFFFF
##143B7D	1.00	10.76	1.95	10.76
#FFFFFF	10.76	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10437F

Deuteranopia (green-blind)

#00397C

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #143b7d;
/* rgb */ color: rgb(20, 59, 125);
/* oklch */ color: oklch(36.7% 0.121 260.3);

Tailwind

colors: {
  custom: {
    50: '#6570a3',
    500: '#143b7d',
    950: '#000000',
  },
}

SCSS

$custom: #143b7d;
$custom-light: #6570a3;
$custom-dark: #000000;

JSON

{
  "hex": "#143b7d",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 125
  },
  "hsl": {
    "h": 217.714,
    "s": 72.414,
    "l": 28.431
  },
  "oklch": {
    "l": 0.36656,
    "c": 0.12057,
    "h": 260.3
  },
  "luminance": 0.04757
}

Semantic roles & 50–950 ramp

primary

#143B7D

secondary

#B2863A

accent

#AB39EF

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #143B7D

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

Preview Lab → · Contrast checker → · Palette generator →