#243BBC#243BBC

#243BBC is a dark, highly saturated blue. Relative luminance 0.071; OKLCH L 43.0% C 0.202 H 268.0°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX#243BBC
RGBrgb(36, 59, 188)
HSLhsl(231, 68%, 44%)
HSVhsv(231, 81%, 74%)
CMYKcmyk(80.9%, 68.6%, 0%, 26.3%)
CIE-LABlab(32.11, 38.98, -69.64)
CIE-LCHlch(32.11, 79.80, 299.24°)
OKLaboklab(43.03% -0.0072 -0.2017)
OKLCHoklch(43.03% 0.202 268)
XYZxyz(11.3655, 7.1325, 48.3449)
Luminance0.0713 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#243BBC #BCA524
analogous
#2487BC #243BBC #5924BC
triadic
#243BBC #BC243B #3BBC24
tetradic
#243BBC #BC2487 #BCA524 #24BC59
square
#243BBC #BC2487 #BCA524 #24BC59
split-complementary
#243BBC #BC5924 #87BC24
monochromatic
#101B55 #1A2B89 #243BBC #4259DB #7686E5

Accessibility & contrast

On white

8.65
#243BBC on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.43
#243BBC on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243BBC
8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##243BBC#FFFFFF#000000##FFFFFF
##243BBC1.008.652.438.65
#FFFFFF8.651.0021.001.00
#0000002.4321.001.0021.00
##FFFFFF8.651.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0053C0
Deuteranopia (green-blind)
#0044BA
Tritanopia (blue-blind)
#005F77
Achromatopsia (no color)
#4C4C4C

Design tokens & code

CSS
--color: #243bbc;
/* rgb */ color: rgb(36, 59, 188);
/* oklch */ color: oklch(43.0% 0.202 268.0);
Tailwind
colors: {
  custom: {
    50: '#7a71d1',
    500: '#243bbc',
    950: '#000000',
  },
}
SCSS
$custom: #243bbc;
$custom-light: #7a71d1;
$custom-dark: #000000;
JSON
{
  "hex": "#243bbc",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 188
  },
  "hsl": {
    "h": 230.921,
    "s": 67.857,
    "l": 43.922
  },
  "oklch": {
    "l": 0.43034,
    "c": 0.20186,
    "h": 268
  },
  "luminance": 0.07134
}

Semantic roles & 50–950 ramp

primary
#243BBC
secondary
#CCBE70
accent
#D03DEB
background
#F8F6FD
surface
#EFECFA
border
#CAC7D3
text
#0B0714
muted
#7C7A83

Preview Lab

Preview with #243BBC

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

Preview Lab → · Contrast checker → · Palette generator →

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