#243B4F#243B4F

#243B4F is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.3% C 0.046 H 245.9°. Best body text is #FFFFFF at 11.58:1 contrast (WCAG AA passes).

Color values

HEX	#243B4F
RGB	rgb(36, 59, 79)
HSL	hsl(208, 37%, 23%)
HSV	hsv(208, 54%, 31%)
CMYK	cmyk(54.4%, 25.3%, 0%, 69%)
CIE-LAB	lab(23.89, -2.46, -14.94)
CIE-LCH	lch(23.89, 15.14, 260.65°)
OKLab	oklab(34.27% -0.0186 -0.0417)
OKLCH	oklch(34.27% 0.046 245.9)
XYZ	xyz(3.7023, 4.0672, 7.9856)
Luminance	0.0407 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B4F #4F3824

analogous

#244F4D #243B4F #24264F

triadic

#243B4F #4F243B #3B4F24

tetradic

#243B4F #4D244F #4F3824 #264F24

square

#243B4F #4D244F #4F3824 #264F24

split-complementary

#243B4F #4F2426 #4F4D24

monochromatic

#0A1015 #111C25 #243B4F #375A79 #4A7AA3

Accessibility & contrast

On white

11.58

#243B4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#243B4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B4F

11.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B4F	#FFFFFF	#000000	##FFFFFF
##243B4F	1.00	11.58	1.81	11.58
#FFFFFF	11.58	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333B50

Deuteranopia (green-blind)

#2D374F

Tritanopia (blue-blind)

#0F4042

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #243b4f;
/* rgb */ color: rgb(36, 59, 79);
/* oklch */ color: oklch(34.3% 0.046 245.9);

Tailwind

colors: {
  custom: {
    50: '#627080',
    500: '#243b4f',
    950: '#000000',
  },
}

SCSS

$custom: #243b4f;
$custom-light: #627080;
$custom-dark: #000000;

JSON

{
  "hex": "#243b4f",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 79
  },
  "hsl": {
    "h": 207.907,
    "s": 37.391,
    "l": 22.549
  },
  "oklch": {
    "l": 0.34271,
    "c": 0.04564,
    "h": 245.9
  },
  "luminance": 0.04068
}

Semantic roles & 50–950 ramp

primary

#243B4F

secondary

#82664C

accent

#905ACD

background

#F5F6F7

surface

#EAECEE

border

#C6C7C9

text

#05070A

muted

#797A7C

Preview Lab

Preview with #243B4F

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

Preview Lab → · Contrast checker → · Palette generator →