#243C53#243C53

#243C53 is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.8% C 0.050 H 248.5°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#243C53
RGB	rgb(36, 60, 83)
HSL	hsl(209, 39%, 23%)
HSV	hsv(209, 57%, 33%)
CMYK	cmyk(56.6%, 27.7%, 0%, 67.5%)
CIE-LAB	lab(24.42, -1.71, -16.76)
CIE-LCH	lch(24.42, 16.84, 264.17°)
OKLab	oklab(34.75% -0.0185 -0.0469)
OKLCH	oklch(34.75% 0.05 248.5)
XYZ	xyz(3.9042, 4.2310, 8.7929)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C53 #533B24

analogous

#245352 #243C53 #242453

triadic

#243C53 #53243C #3C5324

tetradic

#243C53 #522453 #533B24 #245324

square

#243C53 #522453 #533B24 #245324

split-complementary

#243C53 #532424 #535224

monochromatic

#090F15 #111D28 #243C53 #375B7E #497AA8

Accessibility & contrast

On white

11.37

#243C53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#243C53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C53

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C53	#FFFFFF	#000000	##FFFFFF
##243C53	1.00	11.37	1.85	11.37
#FFFFFF	11.37	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333D54

Deuteranopia (green-blind)

#2C3853

Tritanopia (blue-blind)

#0B4144

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #243c53;
/* rgb */ color: rgb(36, 60, 83);
/* oklch */ color: oklch(34.8% 0.050 248.5);

Tailwind

colors: {
  custom: {
    50: '#627183',
    500: '#243c53',
    950: '#000000',
  },
}

SCSS

$custom: #243c53;
$custom-light: #627183;
$custom-dark: #000000;

JSON

{
  "hex": "#243c53",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 83
  },
  "hsl": {
    "h": 209.362,
    "s": 39.496,
    "l": 23.333
  },
  "oklch": {
    "l": 0.34752,
    "c": 0.0504,
    "h": 248.5
  },
  "luminance": 0.04231
}

Semantic roles & 50–950 ramp

primary

#243C53

secondary

#87694C

accent

#9358CF

background

#F6F6F8

surface

#EBECEF

border

#C6C7CA

text

#05070A

muted

#7A7A7C

Preview Lab

Preview with #243C53

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

Preview Lab → · Contrast checker → · Palette generator →