#243C75#243C75

#243C75 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.0% C 0.102 H 264.7°. Best body text is #FFFFFF at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#243C75
RGB	rgb(36, 60, 117)
HSL	hsl(222, 53%, 30%)
HSV	hsv(222, 69%, 46%)
CMYK	cmyk(69.2%, 48.7%, 0%, 54.1%)
CIE-LAB	lab(26.42, 11.17, -35.55)
CIE-LCH	lch(26.42, 37.27, 287.44°)
OKLab	oklab(36.96% -0.0094 -0.1017)
OKLCH	oklch(36.96% 0.102 264.7)
XYZ	xyz(5.5532, 4.8906, 17.4775)
Luminance	0.0489 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C75 #755D24

analogous

#246575 #243C75 #342475

triadic

#243C75 #75243C #3C7524

tetradic

#243C75 #752465 #755D24 #247534

square

#243C75 #752465 #755D24 #247534

split-complementary

#243C75 #753424 #657524

monochromatic

#070C17 #162446 #243C75 #3254A4 #4C70C8

Accessibility & contrast

On white

10.62

#243C75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#243C75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C75

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C75	#FFFFFF	#000000	##FFFFFF
##243C75	1.00	10.62	1.98	10.62
#FFFFFF	10.62	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4277

Deuteranopia (green-blind)

#0F3B74

Tritanopia (blue-blind)

#004952

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #243c75;
/* rgb */ color: rgb(36, 60, 117);
/* oklch */ color: oklch(37.0% 0.102 264.7);

Tailwind

colors: {
  custom: {
    50: '#69719d',
    500: '#243c75',
    950: '#000000',
  },
}

SCSS

$custom: #243c75;
$custom-light: #69719d;
$custom-dark: #000000;

JSON

{
  "hex": "#243c75",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 117
  },
  "hsl": {
    "h": 222.222,
    "s": 52.941,
    "l": 30
  },
  "oklch": {
    "l": 0.36955,
    "c": 0.10219,
    "h": 264.7
  },
  "luminance": 0.04891
}

Semantic roles & 50–950 ramp

primary

#243C75

secondary

#A88D4D

accent

#B14BDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243C75

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

Preview Lab → · Contrast checker → · Palette generator →