#243B4E#243B4E

#243B4E is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.2% C 0.044 H 244.5°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#243B4E
RGB	rgb(36, 59, 78)
HSL	hsl(207, 37%, 22%)
HSV	hsv(207, 54%, 31%)
CMYK	cmyk(53.8%, 24.4%, 0%, 69.4%)
CIE-LAB	lab(23.85, -2.81, -14.35)
CIE-LCH	lch(23.85, 14.62, 258.93°)
OKLab	oklab(34.22% -0.019 -0.04)
OKLCH	oklch(34.22% 0.044 244.5)
XYZ	xyz(3.6662, 4.0528, 7.7953)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B4E #4E3724

analogous

#244E4C #243B4E #24264E

triadic

#243B4E #4E243B #3B4E24

tetradic

#243B4E #4C244E #4E3724 #264E24

square

#243B4E #4C244E #4E3724 #264E24

split-complementary

#243B4E #4E2426 #4E4C24

monochromatic

#0A1015 #111B24 #243B4E #375B78 #4B7AA2

Accessibility & contrast

On white

11.60

#243B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#243B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B4E

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B4E	#FFFFFF	#000000	##FFFFFF
##243B4E	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333B4F

Deuteranopia (green-blind)

#2D374E

Tritanopia (blue-blind)

#104041

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #243b4e;
/* rgb */ color: rgb(36, 59, 78);
/* oklch */ color: oklch(34.2% 0.044 244.5);

Tailwind

colors: {
  custom: {
    50: '#62707f',
    500: '#243b4e',
    950: '#000000',
  },
}

SCSS

$custom: #243b4e;
$custom-light: #62707f;
$custom-dark: #000000;

JSON

{
  "hex": "#243b4e",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 78
  },
  "hsl": {
    "h": 207.143,
    "s": 36.842,
    "l": 22.353
  },
  "oklch": {
    "l": 0.34218,
    "c": 0.04429,
    "h": 244.5
  },
  "luminance": 0.04053
}

Semantic roles & 50–950 ramp

primary

#243B4E

secondary

#81644C

accent

#8E5BCD

background

#F5F6F7

surface

#EAECEE

border

#C6C7C9

text

#05070A

muted

#797A7C

Preview Lab

Preview with #243B4E

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

Preview Lab → · Contrast checker → · Palette generator →