#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
RGBrgb(36, 62, 87)
HSLhsl(209, 41%, 24%)
HSVhsv(209, 59%, 34%)
CMYKcmyk(58.6%, 28.7%, 0%, 65.9%)
CIE-LABlab(25.28, -1.61, -18.04)
CIE-LCHlch(25.28, 18.11, 264.91°)
OKLaboklab(35.5% -0.0197 -0.0506)
OKLCHoklch(35.5% 0.054 248.7)
XYZxyz(4.1699, 4.5081, 9.6654)
Luminance0.0451 (WCAG relative)
Temperaturecool
Familycyan

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
##243E571.0011.041.9011.04
#FFFFFF11.041.0021.001.00
#0000001.9021.001.0021.00
##FFFFFF11.041.0021.001.00

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 →

#243E57 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva