#243E57#243E57

#243E57 is a dark, muted cyan. Relative luminance 0.045; OKLCH L 35.5% C 0.054 H 248.7°. Best body text is #FFFFFF at 11.04:1 contrast (WCAG AA passes).

Color values

HEX	#243E57
RGB	rgb(36, 62, 87)
HSL	hsl(209, 41%, 24%)
HSV	hsv(209, 59%, 34%)
CMYK	cmyk(58.6%, 28.7%, 0%, 65.9%)
CIE-LAB	lab(25.28, -1.61, -18.04)
CIE-LCH	lch(25.28, 18.11, 264.91°)
OKLab	oklab(35.5% -0.0197 -0.0506)
OKLCH	oklch(35.5% 0.054 248.7)
XYZ	xyz(4.1699, 4.5081, 9.6654)
Luminance	0.0451 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243E57 #573D24

analogous

#245757 #243E57 #242557

triadic

#243E57 #57243E #3E5724

tetradic

#243E57 #572457 #573D24 #255724

square

#243E57 #572457 #573D24 #255724

split-complementary

#243E57 #572425 #575724

monochromatic

#090F16 #121F2C #243E57 #365D82 #487CAE

Accessibility & contrast

On white

11.04

#243E57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#243E57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243E57

11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243E57	#FFFFFF	#000000	##FFFFFF
##243E57	1.00	11.04	1.90	11.04
#FFFFFF	11.04	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343F58

Deuteranopia (green-blind)

#2D3A57

Tritanopia (blue-blind)

#054447

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #243e57;
/* rgb */ color: rgb(36, 62, 87);
/* oklch */ color: oklch(35.5% 0.054 248.7);

Tailwind

colors: {
  custom: {
    50: '#637386',
    500: '#243e57',
    950: '#000000',
  },
}

SCSS

$custom: #243e57;
$custom-light: #637386;
$custom-dark: #000000;

JSON

{
  "hex": "#243e57",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 87
  },
  "hsl": {
    "h": 209.412,
    "s": 41.463,
    "l": 24.118
  },
  "oklch": {
    "l": 0.35497,
    "c": 0.05428,
    "h": 248.7
  },
  "luminance": 0.04508
}

Semantic roles & 50–950 ramp

primary

#243E57

secondary

#8B6B4C

accent

#9357D1

background

#F6F6F8

surface

#EBECEF

border

#C6C7CA

text

#05080B

muted

#7A7B7C

Preview Lab

Preview with #243E57

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

Preview Lab → · Contrast checker → · Palette generator →