#243E9B#243E9B

#243E9B is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.155 H 267.1°. Best body text is #FFFFFF at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#243E9B
RGB	rgb(36, 62, 155)
HSL	hsl(227, 62%, 37%)
HSV	hsv(227, 77%, 61%)
CMYK	cmyk(76.8%, 60%, 0%, 39.2%)
CIE-LAB	lab(29.88, 24.66, -53.54)
CIE-LCH	lch(29.88, 58.94, 294.73°)
OKLab	oklab(40.48% -0.0078 -0.1546)
OKLCH	oklch(40.48% 0.155 267.1)
XYZ	xyz(8.3645, 6.1860, 31.7572)
Luminance	0.0619 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243E9B #9B8124

analogous

#24799B #243E9B #46249B

triadic

#243E9B #9B243E #3E9B24

tetradic

#243E9B #9B2479 #9B8124 #249B46

square

#243E9B #9B2479 #9B8124 #249B46

split-complementary

#243E9B #9B4624 #799B24

monochromatic

#0D1638 #182A69 #243E9B #3052CD #5F7ADA

Accessibility & contrast

On white

9.39

#243E9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#243E9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243E9B

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243E9B	#FFFFFF	#000000	##FFFFFF
##243E9B	1.00	9.39	2.24	9.39
#FFFFFF	9.39	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9E

Deuteranopia (green-blind)

#004199

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #243e9b;
/* rgb */ color: rgb(36, 62, 155);
/* oklch */ color: oklch(40.5% 0.155 267.1);

Tailwind

colors: {
  custom: {
    50: '#7172b9',
    500: '#243e9b',
    950: '#000000',
  },
}

SCSS

$custom: #243e9b;
$custom-light: #7172b9;
$custom-dark: #000000;

JSON

{
  "hex": "#243e9b",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 155
  },
  "hsl": {
    "h": 226.891,
    "s": 62.304,
    "l": 37.451
  },
  "oklch": {
    "l": 0.4048,
    "c": 0.1548,
    "h": 267.1
  },
  "luminance": 0.06187
}

Semantic roles & 50–950 ramp

primary

#243E9B

secondary

#BFA95C

accent

#C242E5

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #243E9B

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

Preview Lab → · Contrast checker → · Palette generator →