#143B7B#143B7B

#143B7B is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.5% C 0.118 H 260.0°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#143B7B
RGB	rgb(20, 59, 123)
HSL	hsl(217, 72%, 28%)
HSV	hsv(217, 84%, 48%)
CMYK	cmyk(83.7%, 52%, 0%, 51.8%)
CIE-LAB	lab(25.88, 12.01, -40.25)
CIE-LCH	lch(25.88, 42.00, 286.61°)
OKLab	oklab(36.49% -0.0205 -0.1159)
OKLCH	oklch(36.49% 0.118 260)
XYZ	xyz(5.4263, 4.7061, 19.3574)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143B7B #7B5414

analogous

#146E7B #143B7B #21147B

triadic

#143B7B #7B143B #3B7B14

tetradic

#143B7B #7B146E #7B5414 #147B21

square

#143B7B #7B146E #7B5414 #147B21

split-complementary

#143B7B #7B2114 #6E7B14

monochromatic

#040D1A #0B2246 #143B7B #1D54B0 #2D6FDD

Accessibility & contrast

On white

10.82

#143B7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#143B7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143B7B

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143B7B	#FFFFFF	#000000	##FFFFFF
##143B7B	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13427D

Deuteranopia (green-blind)

#00397A

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #143b7b;
/* rgb */ color: rgb(20, 59, 123);
/* oklch */ color: oklch(36.5% 0.118 260.0);

Tailwind

colors: {
  custom: {
    50: '#6470a2',
    500: '#143b7b',
    950: '#000000',
  },
}

SCSS

$custom: #143b7b;
$custom-light: #6470a2;
$custom-dark: #000000;

JSON

{
  "hex": "#143b7b",
  "rgb": {
    "r": 20,
    "g": 59,
    "b": 123
  },
  "hsl": {
    "h": 217.282,
    "s": 72.028,
    "l": 28.039
  },
  "oklch": {
    "l": 0.36494,
    "c": 0.11767,
    "h": 260
  },
  "luminance": 0.04707
}

Semantic roles & 50–950 ramp

primary

#143B7B

secondary

#B1843A

accent

#AA39EF

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #143B7B

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

Preview Lab → · Contrast checker → · Palette generator →