#143C9F#143C9F

#143C9F is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.9% C 0.167 H 263.7°. Best body text is #FFFFFF at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#143C9F
RGB	rgb(20, 60, 159)
HSL	hsl(223, 78%, 35%)
HSV	hsv(223, 87%, 62%)
CMYK	cmyk(87.4%, 62.3%, 0%, 37.6%)
CIE-LAB	lab(29.11, 26.12, -57.23)
CIE-LCH	lch(29.11, 62.91, 294.53°)
OKLab	oklab(39.86% -0.0183 -0.1657)
OKLCH	oklch(39.86% 0.167 263.7)
XYZ	xyz(8.1601, 5.8826, 33.4995)
Luminance	0.0588 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143C9F #9F7714

analogous

#14819F #143C9F #32149F

triadic

#143C9F #9F143C #3C9F14

tetradic

#143C9F #9F1481 #9F7714 #149F32

square

#143C9F #9F1481 #9F7714 #149F32

split-complementary

#143C9F #9F3214 #819F14

monochromatic

#061332 #0D2769 #143C9F #1B51D5 #4674E8

Accessibility & contrast

On white

9.65

#143C9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#143C9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143C9F

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143C9F	#FFFFFF	#000000	##FFFFFF
##143C9F	1.00	9.65	2.18	9.65
#FFFFFF	9.65	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA2

Deuteranopia (green-blind)

#003E9D

Tritanopia (blue-blind)

#005667

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #143c9f;
/* rgb */ color: rgb(20, 60, 159);
/* oklch */ color: oklch(39.9% 0.167 263.7);

Tailwind

colors: {
  custom: {
    50: '#6e71bc',
    500: '#143c9f',
    950: '#000000',
  },
}

SCSS

$custom: #143c9f;
$custom-light: #6e71bc;
$custom-dark: #000000;

JSON

{
  "hex": "#143c9f",
  "rgb": {
    "r": 20,
    "g": 60,
    "b": 159
  },
  "hsl": {
    "h": 222.734,
    "s": 77.654,
    "l": 35.098
  },
  "oklch": {
    "l": 0.39858,
    "c": 0.16674,
    "h": 263.7
  },
  "luminance": 0.05884
}

Semantic roles & 50–950 ramp

primary

#143C9F

secondary

#C8A346

accent

#BD34F4

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #143C9F

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

Preview Lab → · Contrast checker → · Palette generator →