#243B53#243B53

#243B53 is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.5% C 0.051 H 250.5°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#243B53
RGB	rgb(36, 59, 83)
HSL	hsl(211, 39%, 23%)
HSV	hsv(211, 57%, 33%)
CMYK	cmyk(56.6%, 28.9%, 0%, 67.5%)
CIE-LAB	lab(24.09, -1.04, -17.27)
CIE-LCH	lch(24.09, 17.31, 266.55°)
OKLab	oklab(34.49% -0.0171 -0.0484)
OKLCH	oklch(34.49% 0.051 250.5)
XYZ	xyz(3.8523, 4.1272, 8.7756)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B53 #533C24

analogous

#245253 #243B53 #242453

triadic

#243B53 #53243B #3B5324

tetradic

#243B53 #532452 #533C24 #245324

square

#243B53 #532452 #533C24 #245324

split-complementary

#243B53 #532424 #525324

monochromatic

#090F15 #111D28 #243B53 #37597E #4978A8

Accessibility & contrast

On white

11.50

#243B53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#243B53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B53

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B53	#FFFFFF	#000000	##FFFFFF
##243B53	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313C54

Deuteranopia (green-blind)

#2B3753

Tritanopia (blue-blind)

#0B4143

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #243b53;
/* rgb */ color: rgb(36, 59, 83);
/* oklch */ color: oklch(34.5% 0.051 250.5);

Tailwind

colors: {
  custom: {
    50: '#627083',
    500: '#243b53',
    950: '#000000',
  },
}

SCSS

$custom: #243b53;
$custom-light: #627083;
$custom-dark: #000000;

JSON

{
  "hex": "#243b53",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 83
  },
  "hsl": {
    "h": 210.638,
    "s": 39.496,
    "l": 23.333
  },
  "oklch": {
    "l": 0.34489,
    "c": 0.05132,
    "h": 250.5
  },
  "luminance": 0.04128
}

Semantic roles & 50–950 ramp

primary

#243B53

secondary

#876A4C

accent

#9558CF

background

#F6F6F8

surface

#EBECEF

border

#C6C7CA

text

#05070A

muted

#7A7A7C

Preview Lab

Preview with #243B53

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

Preview Lab → · Contrast checker → · Palette generator →