#243C77#243C77

#243C77 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.1% C 0.105 H 265.0°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#243C77
RGB	rgb(36, 60, 119)
HSL	hsl(223, 54%, 30%)
HSV	hsv(223, 70%, 47%)
CMYK	cmyk(69.7%, 49.6%, 0%, 53.3%)
CIE-LAB	lab(26.56, 11.95, -36.60)
CIE-LCH	lch(26.56, 38.50, 288.08°)
OKLab	oklab(37.1% -0.0091 -0.1048)
OKLCH	oklch(37.1% 0.105 265)
XYZ	xyz(5.6720, 4.9381, 18.1034)
Luminance	0.0494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C77 #775F24

analogous

#246577 #243C77 #362477

triadic

#243C77 #77243C #3C7724

tetradic

#243C77 #772465 #775F24 #247736

square

#243C77 #772465 #775F24 #247736

split-complementary

#243C77 #773624 #657724

monochromatic

#080D19 #162448 #243C77 #3254A6 #4C70C9

Accessibility & contrast

On white

10.56

#243C77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#243C77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C77

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C77	#FFFFFF	#000000	##FFFFFF
##243C77	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D4379

Deuteranopia (green-blind)

#0B3B76

Tritanopia (blue-blind)

#004A53

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243c77;
/* rgb */ color: rgb(36, 60, 119);
/* oklch */ color: oklch(37.1% 0.105 265.0);

Tailwind

colors: {
  custom: {
    50: '#69719f',
    500: '#243c77',
    950: '#000000',
  },
}

SCSS

$custom: #243c77;
$custom-light: #69719f;
$custom-dark: #000000;

JSON

{
  "hex": "#243c77",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 119
  },
  "hsl": {
    "h": 222.651,
    "s": 53.548,
    "l": 30.392
  },
  "oklch": {
    "l": 0.37104,
    "c": 0.10521,
    "h": 265
  },
  "luminance": 0.04939
}

Semantic roles & 50–950 ramp

primary

#243C77

secondary

#AA8F4D

accent

#B34BDD

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243C77

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

Preview Lab → · Contrast checker → · Palette generator →