#143D59#143D59

#143D59 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.6% C 0.067 H 242.3°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#143D59
RGB	rgb(20, 61, 89)
HSL	hsl(204, 63%, 21%)
HSV	hsv(204, 78%, 35%)
CMYK	cmyk(77.5%, 31.5%, 0%, 65.1%)
CIE-LAB	lab(24.34, -3.54, -20.87)
CIE-LCH	lch(24.34, 21.16, 260.38°)
OKLab	oklab(34.59% -0.031 -0.059)
OKLCH	oklch(34.59% 0.067 242.3)
XYZ	xyz(3.7597, 4.2071, 10.0632)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143D59 #593014

analogous

#145953 #143D59 #141B59

triadic

#143D59 #59143D #3D5914

tetradic

#143D59 #531459 #593014 #1B5914

square

#143D59 #531459 #593014 #1B5914

split-complementary

#143D59 #59141B #595314

monochromatic

#061119 #091B27 #143D59 #1F5F8B #2A81BD

Accessibility & contrast

On white

11.40

#143D59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#143D59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143D59

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143D59	#FFFFFF	#000000	##FFFFFF
##143D59	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303D5A

Deuteranopia (green-blind)

#273758

Tritanopia (blue-blind)

#004447

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #143d59;
/* rgb */ color: rgb(20, 61, 89);
/* oklch */ color: oklch(34.6% 0.067 242.3);

Tailwind

colors: {
  custom: {
    50: '#5c7288',
    500: '#143d59',
    950: '#000000',
  },
}

SCSS

$custom: #143d59;
$custom-light: #5c7288;
$custom-dark: #000000;

JSON

{
  "hex": "#143d59",
  "rgb": {
    "r": 20,
    "g": 61,
    "b": 89
  },
  "hsl": {
    "h": 204.348,
    "s": 63.303,
    "l": 21.373
  },
  "oklch": {
    "l": 0.34593,
    "c": 0.06663,
    "h": 242.3
  },
  "luminance": 0.04207
}

Semantic roles & 50–950 ramp

primary

#143D59

secondary

#915C38

accent

#8441E6

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #143D59

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

Preview Lab → · Contrast checker → · Palette generator →