#243D73#243D73

#243D73 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.0% C 0.098 H 263.6°. Best body text is #FFFFFF at 10.55:1 contrast (WCAG AA passes).

Color values

HEX	#243D73
RGB	rgb(36, 61, 115)
HSL	hsl(221, 52%, 30%)
HSV	hsv(221, 69%, 45%)
CMYK	cmyk(68.7%, 47%, 0%, 54.9%)
CIE-LAB	lab(26.59, 9.69, -34.01)
CIE-LCH	lch(26.59, 35.37, 285.90°)
OKLab	oklab(37.04% -0.0108 -0.0972)
OKLCH	oklch(37.04% 0.098 263.6)
XYZ	xyz(5.4897, 4.9498, 16.8824)
Luminance	0.0495 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D73 #735A24

analogous

#246573 #243D73 #332473

triadic

#243D73 #73243D #3D7324

tetradic

#243D73 #732465 #735A24 #247333

square

#243D73 #732465 #735A24 #247333

split-complementary

#243D73 #733324 #657324

monochromatic

#070C17 #152444 #243D73 #3356A2 #4B72C7

Accessibility & contrast

On white

10.55

#243D73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#243D73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D73

10.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D73	#FFFFFF	#000000	##FFFFFF
##243D73	1.00	10.55	1.99	10.55
#FFFFFF	10.55	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234375

Deuteranopia (green-blind)

#153B72

Tritanopia (blue-blind)

#004952

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243d73;
/* rgb */ color: rgb(36, 61, 115);
/* oklch */ color: oklch(37.0% 0.098 263.6);

Tailwind

colors: {
  custom: {
    50: '#68729c',
    500: '#243d73',
    950: '#000000',
  },
}

SCSS

$custom: #243d73;
$custom-light: #68729c;
$custom-dark: #000000;

JSON

{
  "hex": "#243d73",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 115
  },
  "hsl": {
    "h": 221.013,
    "s": 52.318,
    "l": 29.608
  },
  "oklch": {
    "l": 0.37043,
    "c": 0.0978,
    "h": 263.6
  },
  "luminance": 0.0495
}

Semantic roles & 50–950 ramp

primary

#243D73

secondary

#A68A4D

accent

#AE4CDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243D73

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

Preview Lab → · Contrast checker → · Palette generator →