#143F6C#143F6C

#143F6C is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.3% C 0.091 H 252.6°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#143F6C
RGB	rgb(20, 63, 108)
HSL	hsl(211, 69%, 25%)
HSV	hsv(211, 81%, 42%)
CMYK	cmyk(81.5%, 41.7%, 0%, 57.6%)
CIE-LAB	lab(26.12, 2.92, -30.35)
CIE-LCH	lch(26.12, 30.49, 275.49°)
OKLab	oklab(36.35% -0.0272 -0.0867)
OKLCH	oklch(36.35% 0.091 252.6)
XYZ	xyz(4.7718, 4.7859, 14.8567)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143F6C #6C4114

analogous

#146B6C #143F6C #15146C

triadic

#143F6C #6C143F #3F6C14

tetradic

#143F6C #6C146B #6C4114 #146C15

square

#143F6C #6C146B #6C4114 #146C15

split-complementary

#143F6C #6C1514 #6B6C14

monochromatic

#050F1A #0A2138 #143F6C #1E5DA0 #277BD3

Accessibility & contrast

On white

10.73

#143F6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#143F6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143F6C

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143F6C	#FFFFFF	#000000	##FFFFFF
##143F6C	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A426E

Deuteranopia (green-blind)

#1B3A6B

Tritanopia (blue-blind)

#004A50

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #143f6c;
/* rgb */ color: rgb(20, 63, 108);
/* oklch */ color: oklch(36.3% 0.091 252.6);

Tailwind

colors: {
  custom: {
    50: '#607396',
    500: '#143f6c',
    950: '#000000',
  },
}

SCSS

$custom: #143f6c;
$custom-light: #607396;
$custom-dark: #000000;

JSON

{
  "hex": "#143f6c",
  "rgb": {
    "r": 20,
    "g": 63,
    "b": 108
  },
  "hsl": {
    "h": 210.682,
    "s": 68.75,
    "l": 25.098
  },
  "oklch": {
    "l": 0.36346,
    "c": 0.09082,
    "h": 252.6
  },
  "luminance": 0.04786
}

Semantic roles & 50–950 ramp

primary

#143F6C

secondary

#A36F39

accent

#963CEC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#05080D

muted

#7A7B7E

Preview Lab

Preview with #143F6C

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

Preview Lab → · Contrast checker → · Palette generator →