#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
RGB	rgb(36, 59, 188)
HSL	hsl(231, 68%, 44%)
HSV	hsv(231, 81%, 74%)
CMYK	cmyk(80.9%, 68.6%, 0%, 26.3%)
CIE-LAB	lab(32.11, 38.98, -69.64)
CIE-LCH	lch(32.11, 79.80, 299.24°)
OKLab	oklab(43.03% -0.0072 -0.2017)
OKLCH	oklch(43.03% 0.202 268)
XYZ	xyz(11.3655, 7.1325, 48.3449)
Luminance	0.0713 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

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
##243BBC	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

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 →