#143B7E#143B7E

#143B7E is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.7% C 0.122 H 260.5°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#143B7E
RGB	rgb(20, 59, 126)
HSL	hsl(218, 73%, 29%)
HSV	hsv(218, 84%, 49%)
CMYK	cmyk(84.1%, 53.2%, 0%, 50.6%)
CIE-LAB	lab(26.11, 13.27, -41.78)
CIE-LCH	lch(26.11, 43.83, 287.62°)
OKLab	oklab(36.74% -0.0201 -0.1203)
OKLCH	oklch(36.74% 0.122 260.5)
XYZ	xyz(5.6170, 4.7823, 20.3617)
Luminance	0.0478 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143B7E #7E5714

analogous

#14707E #143B7E #22147E

triadic

#143B7E #7E143B #3B7E14

tetradic

#143B7E #7E1470 #7E5714 #147E22

square

#143B7E #7E1470 #7E5714 #147E22

split-complementary

#143B7E #7E2214 #707E14

monochromatic

#040C1A #0C2249 #143B7E #1C54B3 #2E6FDE

Accessibility & contrast

On white

10.73

#143B7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#143B7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B7E

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143B7E	#FFFFFF	#000000	##FFFFFF
##143B7E	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E4380

Deuteranopia (green-blind)

#00397D

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #143b7e;
/* rgb */ color: rgb(20, 59, 126);
/* oklch */ color: oklch(36.7% 0.122 260.5);

Tailwind

colors: {
  custom: {
    50: '#6570a4',
    500: '#143b7e',
    950: '#000000',
  },
}

SCSS

$custom: #143b7e;
$custom-light: #6570a4;
$custom-dark: #000000;

JSON

{
  "hex": "#143b7e",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 126
  },
  "hsl": {
    "h": 217.925,
    "s": 72.603,
    "l": 28.627
  },
  "oklch": {
    "l": 0.36738,
    "c": 0.12201,
    "h": 260.5
  },
  "luminance": 0.04783
}

Semantic roles & 50–950 ramp

primary

#143B7E

secondary

#B3873A

accent

#AC38EF

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #143B7E

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

Preview Lab → · Contrast checker → · Palette generator →