#243B73#243B73

#243B73 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.6% C 0.100 H 265.0°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#243B73
RGB	rgb(36, 59, 115)
HSL	hsl(223, 52%, 30%)
HSV	hsv(223, 69%, 45%)
CMYK	cmyk(68.7%, 48.7%, 0%, 54.9%)
CIE-LAB	lab(25.98, 11.08, -34.99)
CIE-LCH	lch(25.98, 36.70, 287.57°)
OKLab	oklab(36.58% -0.0087 -0.1001)
OKLCH	oklch(36.58% 0.1 265)
XYZ	xyz(5.3850, 4.7403, 16.8475)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B73 #735C24

analogous

#246373 #243B73 #352473

triadic

#243B73 #73243B #3B7324

tetradic

#243B73 #732463 #735C24 #247335

square

#243B73 #732463 #735C24 #247335

split-complementary

#243B73 #733524 #637324

monochromatic

#070C17 #152344 #243B73 #3353A2 #4B6FC7

Accessibility & contrast

On white

10.78

#243B73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#243B73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B73

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B73	#FFFFFF	#000000	##FFFFFF
##243B73	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4175

Deuteranopia (green-blind)

#103A72

Tritanopia (blue-blind)

#004851

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #243b73;
/* rgb */ color: rgb(36, 59, 115);
/* oklch */ color: oklch(36.6% 0.100 265.0);

Tailwind

colors: {
  custom: {
    50: '#68709c',
    500: '#243b73',
    950: '#000000',
  },
}

SCSS

$custom: #243b73;
$custom-light: #68709c;
$custom-dark: #000000;

JSON

{
  "hex": "#243b73",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 115
  },
  "hsl": {
    "h": 222.532,
    "s": 52.318,
    "l": 29.608
  },
  "oklch": {
    "l": 0.36575,
    "c": 0.10048,
    "h": 265
  },
  "luminance": 0.04741
}

Semantic roles & 50–950 ramp

primary

#243B73

secondary

#A68C4D

accent

#B24CDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243B73

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

Preview Lab → · Contrast checker → · Palette generator →