#143F7B#143F7B

#143F7B is a dark, moderate cyan. Relative luminance 0.051; OKLCH L 37.4% C 0.112 H 257.8°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#143F7B
RGB	rgb(20, 63, 123)
HSL	hsl(215, 72%, 28%)
HSV	hsv(215, 84%, 48%)
CMYK	cmyk(83.7%, 48.8%, 0%, 51.8%)
CIE-LAB	lab(27.11, 9.20, -38.27)
CIE-LCH	lch(27.11, 39.36, 283.52°)
OKLab	oklab(37.44% -0.0238 -0.1099)
OKLCH	oklch(37.44% 0.112 257.8)
XYZ	xyz(5.6398, 5.1331, 19.4286)
Luminance	0.0513 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F7B #7B5014

analogous

#14727B #143F7B #1C147B

triadic

#143F7B #7B143F #3F7B14

tetradic

#143F7B #7B1472 #7B5014 #147B1C

square

#143F7B #7B1472 #7B5014 #147B1C

split-complementary

#143F7B #7B1C14 #727B14

monochromatic

#040D1A #0B2446 #143F7B #1D5AB0 #2D76DD

Accessibility & contrast

On white

10.36

#143F7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#143F7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F7B

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F7B	#FFFFFF	#000000	##FFFFFF
##143F7B	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E457D

Deuteranopia (green-blind)

#013C7A

Tritanopia (blue-blind)

#004D57

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #143f7b;
/* rgb */ color: rgb(20, 63, 123);
/* oklch */ color: oklch(37.4% 0.112 257.8);

Tailwind

colors: {
  custom: {
    50: '#6473a2',
    500: '#143f7b',
    950: '#000000',
  },
}

SCSS

$custom: #143f7b;
$custom-light: #6473a2;
$custom-dark: #000000;

JSON

{
  "hex": "#143f7b",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 123
  },
  "hsl": {
    "h": 214.951,
    "s": 72.028,
    "l": 28.039
  },
  "oklch": {
    "l": 0.37439,
    "c": 0.11249,
    "h": 257.8
  },
  "luminance": 0.05134
}

Semantic roles & 50–950 ramp

primary

#143F7B

secondary

#B17F3A

accent

#A339EF

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#06080F

muted

#7A7B7F

Preview Lab

Preview with #143F7B

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

Preview Lab → · Contrast checker → · Palette generator →