#143D5A#143D5A

#143D5A is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.7% C 0.068 H 243.2°. Best body text is #FFFFFF at 11.38:1 contrast (WCAG AA passes).

Color values

HEX	#143D5A
RGB	rgb(20, 61, 90)
HSL	hsl(205, 64%, 22%)
HSV	hsv(205, 78%, 35%)
CMYK	cmyk(77.8%, 32.2%, 0%, 64.7%)
CIE-LAB	lab(24.40, -3.13, -21.43)
CIE-LCH	lch(24.40, 21.66, 261.69°)
OKLab	oklab(34.65% -0.0306 -0.0606)
OKLCH	oklch(34.65% 0.068 243.2)
XYZ	xyz(3.8020, 4.2240, 10.2858)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143D5A #5A3114

analogous

#145A54 #143D5A #141A5A

triadic

#143D5A #5A143D #3D5A14

tetradic

#143D5A #54145A #5A3114 #1A5A14

square

#143D5A #54145A #5A3114 #1A5A14

split-complementary

#143D5A #5A141A #5A5414

monochromatic

#061119 #091B28 #143D5A #1F5F8C #2A81BE

Accessibility & contrast

On white

11.38

#143D5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#143D5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143D5A

11.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143D5A	#FFFFFF	#000000	##FFFFFF
##143D5A	1.00	11.38	1.84	11.38
#FFFFFF	11.38	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303E5B

Deuteranopia (green-blind)

#263759

Tritanopia (blue-blind)

#004447

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #143d5a;
/* rgb */ color: rgb(20, 61, 90);
/* oklch */ color: oklch(34.7% 0.068 243.2);

Tailwind

colors: {
  custom: {
    50: '#5c7289',
    500: '#143d5a',
    950: '#000000',
  },
}

SCSS

$custom: #143d5a;
$custom-light: #5c7289;
$custom-dark: #000000;

JSON

{
  "hex": "#143d5a",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 90
  },
  "hsl": {
    "h": 204.857,
    "s": 63.636,
    "l": 21.569
  },
  "oklch": {
    "l": 0.34654,
    "c": 0.06793,
    "h": 243.2
  },
  "luminance": 0.04224
}

Semantic roles & 50–950 ramp

primary

#143D5A

secondary

#925D38

accent

#8641E7

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#04070B

muted

#797A7C

Preview Lab

Preview with #143D5A

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

Preview Lab → · Contrast checker → · Palette generator →