#143B9F#143B9F

#143B9F is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.7% C 0.168 H 263.9°. Best body text is #FFFFFF at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#143B9F
RGB	rgb(20, 59, 159)
HSL	hsl(223, 78%, 35%)
HSV	hsv(223, 87%, 62%)
CMYK	cmyk(87.4%, 62.9%, 0%, 37.6%)
CIE-LAB	lab(28.85, 26.80, -57.67)
CIE-LCH	lch(28.85, 63.59, 294.92°)
OKLab	oklab(39.66% -0.0178 -0.167)
OKLCH	oklch(39.66% 0.168 263.9)
XYZ	xyz(8.1082, 5.7788, 33.4822)
Luminance	0.0578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143B9F #9F7814

analogous

#14819F #143B9F #32149F

triadic

#143B9F #9F143B #3B9F14

tetradic

#143B9F #9F1481 #9F7814 #149F32

square

#143B9F #9F1481 #9F7814 #149F32

split-complementary

#143B9F #9F3214 #819F14

monochromatic

#061332 #0D2769 #143B9F #1B4FD5 #4673E8

Accessibility & contrast

On white

9.74

#143B9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#143B9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B9F

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143B9F	#FFFFFF	#000000	##FFFFFF
##143B9F	1.00	9.74	2.16	9.74
#FFFFFF	9.74	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA2

Deuteranopia (green-blind)

#003E9D

Tritanopia (blue-blind)

#005567

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #143b9f;
/* rgb */ color: rgb(20, 59, 159);
/* oklch */ color: oklch(39.7% 0.168 263.9);

Tailwind

colors: {
  custom: {
    50: '#6e70bc',
    500: '#143b9f',
    950: '#000000',
  },
}

SCSS

$custom: #143b9f;
$custom-light: #6e70bc;
$custom-dark: #000000;

JSON

{
  "hex": "#143b9f",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 159
  },
  "hsl": {
    "h": 223.165,
    "s": 77.654,
    "l": 35.098
  },
  "oklch": {
    "l": 0.3966,
    "c": 0.16796,
    "h": 263.9
  },
  "luminance": 0.0578
}

Semantic roles & 50–950 ramp

primary

#143B9F

secondary

#C8A446

accent

#BE34F4

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #143B9F

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

Preview Lab → · Contrast checker → · Palette generator →