#143C8E#143C8E

#143C8E is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.3% C 0.143 H 262.3°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#143C8E
RGB	rgb(20, 60, 142)
HSL	hsl(220, 75%, 32%)
HSV	hsv(220, 86%, 56%)
CMYK	cmyk(85.9%, 57.7%, 0%, 44.3%)
CIE-LAB	lab(27.66, 19.22, -49.21)
CIE-LCH	lch(27.66, 52.83, 291.33°)
OKLab	oklab(38.32% -0.0191 -0.1422)
OKLCH	oklch(38.32% 0.143 262.3)
XYZ	xyz(6.7851, 5.3326, 26.2576)
Luminance	0.0533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143C8E #8E6614

analogous

#14798E #143C8E #29148E

triadic

#143C8E #8E143C #3C8E14

tetradic

#143C8E #8E1479 #8E6614 #148E29

square

#143C8E #8E1479 #8E6614 #148E29

split-complementary

#143C8E #8E2914 #798E14

monochromatic

#050F23 #0C2558 #143C8E #1C53C4 #3971E3

Accessibility & contrast

On white

10.16

#143C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#143C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143C8E

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143C8E	#FFFFFF	#000000	##FFFFFF
##143C8E	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004791

Deuteranopia (green-blind)

#003C8C

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #143c8e;
/* rgb */ color: rgb(20, 60, 142);
/* oklch */ color: oklch(38.3% 0.143 262.3);

Tailwind

colors: {
  custom: {
    50: '#6971b0',
    500: '#143c8e',
    950: '#000000',
  },
}

SCSS

$custom: #143c8e;
$custom-light: #6971b0;
$custom-dark: #000000;

JSON

{
  "hex": "#143c8e",
  "rgb": {
    "r": 20,
    "g": 60,
    "b": 142
  },
  "hsl": {
    "h": 220.328,
    "s": 75.309,
    "l": 31.765
  },
  "oklch": {
    "l": 0.38318,
    "c": 0.14347,
    "h": 262.3
  },
  "luminance": 0.05333
}

Semantic roles & 50–950 ramp

primary

#143C8E

secondary

#C2963C

accent

#B436F2

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #143C8E

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

Preview Lab → · Contrast checker → · Palette generator →