#243C74#243C74

#243C74 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.9% C 0.101 H 264.5°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#243C74
RGB	rgb(36, 60, 116)
HSL	hsl(222, 53%, 30%)
HSV	hsv(222, 69%, 45%)
CMYK	cmyk(69%, 48.3%, 0%, 54.5%)
CIE-LAB	lab(26.35, 10.78, -35.03)
CIE-LCH	lch(26.35, 36.65, 287.10°)
OKLab	oklab(36.88% -0.0096 -0.1002)
OKLCH	oklch(36.88% 0.101 264.5)
XYZ	xyz(5.4947, 4.8672, 17.1695)
Luminance	0.0487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C74 #745C24

analogous

#246474 #243C74 #342474

triadic

#243C74 #74243C #3C7424

tetradic

#243C74 #742464 #745C24 #247434

square

#243C74 #742464 #745C24 #247434

split-complementary

#243C74 #743424 #647424

monochromatic

#070C17 #162445 #243C74 #3254A3 #4B70C7

Accessibility & contrast

On white

10.64

#243C74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#243C74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C74

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C74	#FFFFFF	#000000	##FFFFFF
##243C74	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204276

Deuteranopia (green-blind)

#113B73

Tritanopia (blue-blind)

#004952

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #243c74;
/* rgb */ color: rgb(36, 60, 116);
/* oklch */ color: oklch(36.9% 0.101 264.5);

Tailwind

colors: {
  custom: {
    50: '#68719c',
    500: '#243c74',
    950: '#000000',
  },
}

SCSS

$custom: #243c74;
$custom-light: #68719c;
$custom-dark: #000000;

JSON

{
  "hex": "#243c74",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 116
  },
  "hsl": {
    "h": 222,
    "s": 52.632,
    "l": 29.804
  },
  "oklch": {
    "l": 0.36882,
    "c": 0.10066,
    "h": 264.5
  },
  "luminance": 0.04868
}

Semantic roles & 50–950 ramp

primary

#243C74

secondary

#A78C4D

accent

#B14CDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243C74

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

Preview Lab → · Contrast checker → · Palette generator →