#243EB0#243EB0

#243EB0 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.183 H 267.5°. Best body text is #FFFFFF at 8.78:1 contrast (WCAG AA passes).

Color values

HEX	#243EB0
RGB	rgb(36, 62, 176)
HSL	hsl(229, 66%, 42%)
HSV	hsv(229, 80%, 69%)
CMYK	cmyk(79.5%, 64.8%, 0%, 31%)
CIE-LAB	lab(31.70, 32.65, -63.19)
CIE-LCH	lch(31.70, 71.12, 297.32°)
OKLab	oklab(42.4% -0.008 -0.1829)
OKLCH	oklch(42.4% 0.183 267.5)
XYZ	xyz(10.2839, 6.9537, 41.8661)
Luminance	0.0696 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243EB0 #B09624

analogous

#2484B0 #243EB0 #5024B0

triadic

#243EB0 #B0243E #3EB024

tetradic

#243EB0 #B02484 #B09624 #24B050

square

#243EB0 #B02484 #B09624 #24B050

split-complementary

#243EB0 #B05024 #84B024

monochromatic

#0F1A4A #1A2C7D #243EB0 #3A57D7 #6D83E1

Accessibility & contrast

On white

8.78

#243EB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#243EB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243EB0

8.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243EB0	#FFFFFF	#000000	##FFFFFF
##243EB0	1.00	8.78	2.39	8.78
#FFFFFF	8.78	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B4

Deuteranopia (green-blind)

#0044AE

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #243eb0;
/* rgb */ color: rgb(36, 62, 176);
/* oklch */ color: oklch(42.4% 0.183 267.5);

Tailwind

colors: {
  custom: {
    50: '#7773c9',
    500: '#243eb0',
    950: '#000000',
  },
}

SCSS

$custom: #243eb0;
$custom-light: #7773c9;
$custom-dark: #000000;

JSON

{
  "hex": "#243eb0",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 176
  },
  "hsl": {
    "h": 228.857,
    "s": 66.038,
    "l": 41.569
  },
  "oklch": {
    "l": 0.42396,
    "c": 0.18306,
    "h": 267.5
  },
  "luminance": 0.06955
}

Semantic roles & 50–950 ramp

primary

#243EB0

secondary

#C8B668

accent

#C93FE9

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #243EB0

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

Preview Lab → · Contrast checker → · Palette generator →