#243EA1#243EA1

#243EA1 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.0% C 0.163 H 267.3°. Best body text is #FFFFFF at 9.22:1 contrast (WCAG AA passes).

Color values

HEX	#243EA1
RGB	rgb(36, 62, 161)
HSL	hsl(228, 63%, 39%)
HSV	hsv(228, 78%, 63%)
CMYK	cmyk(77.6%, 61.5%, 0%, 36.9%)
CIE-LAB	lab(30.38, 26.97, -56.35)
CIE-LCH	lch(30.38, 62.47, 295.57°)
OKLab	oklab(41.01% -0.0078 -0.1628)
OKLCH	oklch(41.01% 0.163 267.3)
XYZ	xyz(8.8810, 6.3925, 34.4771)
Luminance	0.0639 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243EA1 #A18724

analogous

#247CA1 #243EA1 #4824A1

triadic

#243EA1 #A1243E #3EA124

tetradic

#243EA1 #A1247C #A18724 #24A148

square

#243EA1 #A1247C #A18724 #24A148

split-complementary

#243EA1 #A14824 #7CA124

monochromatic

#0E173D #192B6F #243EA1 #3152D1 #637CDC

Accessibility & contrast

On white

9.22

#243EA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#243EA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243EA1

9.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243EA1	#FFFFFF	#000000	##FFFFFF
##243EA1	1.00	9.22	2.28	9.22
#FFFFFF	9.22	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA4

Deuteranopia (green-blind)

#00429F

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #243ea1;
/* rgb */ color: rgb(36, 62, 161);
/* oklch */ color: oklch(41.0% 0.163 267.3);

Tailwind

colors: {
  custom: {
    50: '#7373be',
    500: '#243ea1',
    950: '#000000',
  },
}

SCSS

$custom: #243ea1;
$custom-light: #7373be;
$custom-dark: #000000;

JSON

{
  "hex": "#243ea1",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 161
  },
  "hsl": {
    "h": 227.52,
    "s": 63.452,
    "l": 38.627
  },
  "oklch": {
    "l": 0.41013,
    "c": 0.16303,
    "h": 267.3
  },
  "luminance": 0.06394
}

Semantic roles & 50–950 ramp

primary

#243EA1

secondary

#C2AD5F

accent

#C441E6

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #243EA1

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

Preview Lab → · Contrast checker → · Palette generator →