#243D79#243D79

#243D79 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.5% C 0.107 H 264.7°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#243D79
RGB	rgb(36, 61, 121)
HSL	hsl(222, 54%, 31%)
HSV	hsv(222, 70%, 47%)
CMYK	cmyk(70.2%, 49.6%, 0%, 52.5%)
CIE-LAB	lab(27.00, 12.04, -37.16)
CIE-LCH	lch(27.00, 39.06, 287.95°)
OKLab	oklab(37.48% -0.0098 -0.1064)
OKLCH	oklch(37.48% 0.107 264.7)
XYZ	xyz(5.8463, 5.0925, 18.7603)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D79 #796024

analogous

#246779 #243D79 #352479

triadic

#243D79 #79243D #3D7924

tetradic

#243D79 #792467 #796024 #247935

square

#243D79 #792467 #796024 #247935

split-complementary

#243D79 #793524 #677924

monochromatic

#080D1B #16254A #243D79 #3255A8 #4D72CA

Accessibility & contrast

On white

10.40

#243D79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#243D79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D79

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D79	#FFFFFF	#000000	##FFFFFF
##243D79	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E447B

Deuteranopia (green-blind)

#0A3C78

Tritanopia (blue-blind)

#004B55

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #243d79;
/* rgb */ color: rgb(36, 61, 121);
/* oklch */ color: oklch(37.5% 0.107 264.7);

Tailwind

colors: {
  custom: {
    50: '#6972a0',
    500: '#243d79',
    950: '#000000',
  },
}

SCSS

$custom: #243d79;
$custom-light: #6972a0;
$custom-dark: #000000;

JSON

{
  "hex": "#243d79",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 121
  },
  "hsl": {
    "h": 222.353,
    "s": 54.14,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37484,
    "c": 0.1069,
    "h": 264.7
  },
  "luminance": 0.05093
}

Semantic roles & 50–950 ramp

primary

#243D79

secondary

#AC904D

accent

#B24ADE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #243D79

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

Preview Lab → · Contrast checker → · Palette generator →