#243C73#243C73

#243C73 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.8% C 0.099 H 264.3°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#243C73
RGB	rgb(36, 60, 115)
HSL	hsl(222, 52%, 30%)
HSV	hsv(222, 69%, 45%)
CMYK	cmyk(68.7%, 47.8%, 0%, 54.9%)
CIE-LAB	lab(26.29, 10.38, -34.50)
CIE-LCH	lch(26.29, 36.03, 286.75°)
OKLab	oklab(36.81% -0.0098 -0.0986)
OKLCH	oklch(36.81% 0.099 264.3)
XYZ	xyz(5.4368, 4.8441, 16.8648)
Luminance	0.0485 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C73 #735B24

analogous

#246473 #243C73 #342473

triadic

#243C73 #73243C #3C7324

tetradic

#243C73 #732464 #735B24 #247334

square

#243C73 #732464 #735B24 #247334

split-complementary

#243C73 #733424 #647324

monochromatic

#070C17 #152444 #243C73 #3354A2 #4B70C7

Accessibility & contrast

On white

10.67

#243C73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#243C73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C73

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C73	#FFFFFF	#000000	##FFFFFF
##243C73	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214275

Deuteranopia (green-blind)

#133B72

Tritanopia (blue-blind)

#004952

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #243c73;
/* rgb */ color: rgb(36, 60, 115);
/* oklch */ color: oklch(36.8% 0.099 264.3);

Tailwind

colors: {
  custom: {
    50: '#68719c',
    500: '#243c73',
    950: '#000000',
  },
}

SCSS

$custom: #243c73;
$custom-light: #68719c;
$custom-dark: #000000;

JSON

{
  "hex": "#243c73",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 115
  },
  "hsl": {
    "h": 221.772,
    "s": 52.318,
    "l": 29.608
  },
  "oklch": {
    "l": 0.36808,
    "c": 0.09913,
    "h": 264.3
  },
  "luminance": 0.04845
}

Semantic roles & 50–950 ramp

primary

#243C73

secondary

#A68B4D

accent

#B04CDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243C73

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

Preview Lab → · Contrast checker → · Palette generator →