#143A7B#143A7B

#143A7B is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.3% C 0.119 H 260.5°. Best body text is #FFFFFF at 10.93:1 contrast (WCAG AA passes).

Color values

HEX	#143A7B
RGB	rgb(20, 58, 123)
HSL	hsl(218, 72%, 28%)
HSV	hsv(218, 84%, 48%)
CMYK	cmyk(83.7%, 52.8%, 0%, 51.8%)
CIE-LAB	lab(25.58, 12.72, -40.74)
CIE-LCH	lch(25.58, 42.68, 287.33°)
OKLab	oklab(36.26% -0.0197 -0.1173)
OKLCH	oklch(36.26% 0.119 260.5)
XYZ	xyz(5.3754, 4.6042, 19.3405)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143A7B #7B5514

analogous

#146D7B #143A7B #21147B

triadic

#143A7B #7B143A #3A7B14

tetradic

#143A7B #7B146D #7B5514 #147B21

square

#143A7B #7B146D #7B5514 #147B21

split-complementary

#143A7B #7B2114 #6D7B14

monochromatic

#040C1A #0B2146 #143A7B #1D53B0 #2D6EDD

Accessibility & contrast

On white

10.93

#143A7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#143A7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143A7B

10.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143A7B	#FFFFFF	#000000	##FFFFFF
##143A7B	1.00	10.93	1.92	10.93
#FFFFFF	10.93	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10427D

Deuteranopia (green-blind)

#00387A

Tritanopia (blue-blind)

#004A54

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #143a7b;
/* rgb */ color: rgb(20, 58, 123);
/* oklch */ color: oklch(36.3% 0.119 260.5);

Tailwind

colors: {
  custom: {
    50: '#646fa2',
    500: '#143a7b',
    950: '#000000',
  },
}

SCSS

$custom: #143a7b;
$custom-light: #646fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#143a7b",
  "rgb": {
    "r": 20,
    "g": 58,
    "b": 123
  },
  "hsl": {
    "h": 217.864,
    "s": 72.028,
    "l": 28.039
  },
  "oklch": {
    "l": 0.36261,
    "c": 0.11897,
    "h": 260.5
  },
  "luminance": 0.04605
}

Semantic roles & 50–950 ramp

primary

#143A7B

secondary

#B1853A

accent

#AC39EF

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #143A7B

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

Preview Lab → · Contrast checker → · Palette generator →