#243E81#243E81

#243E81 is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.3% C 0.118 H 265.3°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#243E81
RGB	rgb(36, 62, 129)
HSL	hsl(223, 56%, 32%)
HSV	hsv(223, 72%, 51%)
CMYK	cmyk(72.1%, 51.9%, 0%, 49.4%)
CIE-LAB	lab(27.86, 14.49, -40.79)
CIE-LCH	lch(27.86, 43.29, 289.56°)
OKLab	oklab(38.32% -0.0097 -0.1171)
OKLCH	oklch(38.32% 0.118 265.3)
XYZ	xyz(6.4112, 5.4046, 21.4699)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243E81 #816724

analogous

#246D81 #243E81 #392481

triadic

#243E81 #81243E #3E8124

tetradic

#243E81 #81246D #816724 #248139

square

#243E81 #81246D #816724 #248139

split-complementary

#243E81 #813924 #6D8124

monochromatic

#091021 #172751 #243E81 #3155B1 #5174CE

Accessibility & contrast

On white

10.09

#243E81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#243E81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243E81

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243E81	#FFFFFF	#000000	##FFFFFF
##243E81	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#174683

Deuteranopia (green-blind)

#003E80

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #243e81;
/* rgb */ color: rgb(36, 62, 129);
/* oklch */ color: oklch(38.3% 0.118 265.3);

Tailwind

colors: {
  custom: {
    50: '#6b72a6',
    500: '#243e81',
    950: '#000000',
  },
}

SCSS

$custom: #243e81;
$custom-light: #6b72a6;
$custom-dark: #000000;

JSON

{
  "hex": "#243e81",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 129
  },
  "hsl": {
    "h": 223.226,
    "s": 56.364,
    "l": 32.353
  },
  "oklch": {
    "l": 0.38322,
    "c": 0.11752,
    "h": 265.3
  },
  "luminance": 0.05405
}

Semantic roles & 50–950 ramp

primary

#243E81

secondary

#B2964E

accent

#B548E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #243E81

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

Preview Lab → · Contrast checker → · Palette generator →