#243C79#243C79

#243C79 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.3% C 0.108 H 265.3°. Best body text is #FFFFFF at 10.51:1 contrast (WCAG AA passes).

Color values

HEX#243C79
RGBrgb(36, 60, 121)
HSLhsl(223, 54%, 31%)
HSVhsv(223, 70%, 47%)
CMYKcmyk(70.2%, 50.4%, 0%, 52.5%)
CIE-LABlab(26.70, 12.74, -37.64)
CIE-LCHlch(26.70, 39.74, 288.69°)
OKLaboklab(37.26% -0.0088 -0.1079)
OKLCHoklch(37.26% 0.108 265.3)
XYZxyz(5.7934, 4.9867, 18.7427)
Luminance0.0499 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#243C79 #796124
analogous
#246679 #243C79 #362479
triadic
#243C79 #79243C #3C7924
tetradic
#243C79 #792466 #796124 #247936
square
#243C79 #792466 #796124 #247936
split-complementary
#243C79 #793624 #667924
monochromatic
#080D1B #16254A #243C79 #3253A8 #4D71CA

Accessibility & contrast

On white

10.51
#243C79 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.00
#243C79 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C79
10.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##243C79#FFFFFF#000000##FFFFFF
##243C791.0010.512.0010.51
#FFFFFF10.511.0021.001.00
#0000002.0021.001.0021.00
##FFFFFF10.511.0021.001.00

Color blindness preview

Protanopia (red-blind)
#1B437B
Deuteranopia (green-blind)
#063B78
Tritanopia (blue-blind)
#004A54
Achromatopsia (no color)
#3F3F3F

Design tokens & code

CSS
--color: #243c79;
/* rgb */ color: rgb(36, 60, 121);
/* oklch */ color: oklch(37.3% 0.108 265.3);
Tailwind
colors: {
  custom: {
    50: '#6971a0',
    500: '#243c79',
    950: '#000000',
  },
}
SCSS
$custom: #243c79;
$custom-light: #6971a0;
$custom-dark: #000000;
JSON
{
  "hex": "#243c79",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 121
  },
  "hsl": {
    "h": 223.059,
    "s": 54.14,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37255,
    "c": 0.10824,
    "h": 265.3
  },
  "luminance": 0.04987
}

Semantic roles & 50–950 ramp

primary
#243C79
secondary
#AC914D
accent
#B44ADE
background
#F6F6F9
surface
#ECECF2
border
#C7C7CC
text
#07070F
muted
#7A7A7E

Preview Lab

Preview with #243C79

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

Preview Lab → · Contrast checker → · Palette generator →

#243C79 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva