#143E8B#143E8B

#143E8B is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.5% C 0.137 H 261.3°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX#143E8B
RGBrgb(20, 62, 139)
HSLhsl(219, 75%, 31%)
HSVhsv(219, 86%, 55%)
CMYKcmyk(85.6%, 55.4%, 0%, 45.5%)
CIE-LABlab(28.00, 16.58, -46.81)
CIE-LCHlch(28.00, 49.66, 289.50°)
OKLaboklab(38.5% -0.0207 -0.1351)
OKLCHoklch(38.5% 0.137 261.3)
XYZxyz(6.6696, 5.4572, 25.1229)
Luminance0.0546 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#143E8B #8B6114
analogous
#14798B #143E8B #26148B
triadic
#143E8B #8B143E #3E8B14
tetradic
#143E8B #8B1479 #8B6114 #148B26
square
#143E8B #8B1479 #8B6114 #148B26
split-complementary
#143E8B #8B2614 #798B14
monochromatic
#050E20 #0C2655 #143E8B #1C56C1 #3774E2

Accessibility & contrast

On white

10.04
#143E8B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.09
#143E8B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143E8B
10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##143E8B#FFFFFF#000000##FFFFFF
##143E8B1.0010.042.0910.04
#FFFFFF10.041.0021.001.00
#0000002.0921.001.0021.00
##FFFFFF10.041.0021.001.00

Color blindness preview

Protanopia (red-blind)
#00488E
Deuteranopia (green-blind)
#003D89
Tritanopia (blue-blind)
#00515E
Achromatopsia (no color)
#424242

Design tokens & code

CSS
--color: #143e8b;
/* rgb */ color: rgb(20, 62, 139);
/* oklch */ color: oklch(38.5% 0.137 261.3);
Tailwind
colors: {
  custom: {
    50: '#6972ad',
    500: '#143e8b',
    950: '#000000',
  },
}
SCSS
$custom: #143e8b;
$custom-light: #6972ad;
$custom-dark: #000000;
JSON
{
  "hex": "#143e8b",
  "rgb": {
    "r": 20,
    "g": 62,
    "b": 139
  },
  "hsl": {
    "h": 218.824,
    "s": 74.843,
    "l": 31.176
  },
  "oklch": {
    "l": 0.38498,
    "c": 0.13667,
    "h": 261.3
  },
  "luminance": 0.05458
}

Semantic roles & 50–950 ramp

primary
#143E8B
secondary
#BF913C
accent
#AF36F1
background
#F6F6FA
surface
#ECECF4
border
#C7C7CE
text
#070710
muted
#7A7A7F

Preview Lab

Preview with #143E8B

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

Preview Lab → · Contrast checker → · Palette generator →

#143E8B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva