#243B54#243B54

#243B54 is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.5% C 0.053 H 251.5°. Best body text is #FFFFFF at 11.48:1 contrast (WCAG AA passes).

Color values

HEX	#243B54
RGB	rgb(36, 59, 84)
HSL	hsl(211, 40%, 24%)
HSV	hsv(211, 57%, 33%)
CMYK	cmyk(57.1%, 29.8%, 0%, 67.1%)
CIE-LAB	lab(24.14, -0.68, -17.85)
CIE-LCH	lch(24.14, 17.87, 267.81°)
OKLab	oklab(34.55% -0.0168 -0.05)
OKLCH	oklch(34.55% 0.053 251.5)
XYZ	xyz(3.8912, 4.1428, 8.9804)
Luminance	0.0414 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B54 #543D24

analogous

#245354 #243B54 #252454

triadic

#243B54 #54243B #3B5424

tetradic

#243B54 #542453 #543D24 #245425

square

#243B54 #542453 #543D24 #245425

split-complementary

#243B54 #542524 #535424

monochromatic

#090F15 #121D29 #243B54 #36597F #4977AA

Accessibility & contrast

On white

11.48

#243B54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#243B54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B54

11.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B54	#FFFFFF	#000000	##FFFFFF
##243B54	1.00	11.48	1.83	11.48
#FFFFFF	11.48	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313C55

Deuteranopia (green-blind)

#2B3753

Tritanopia (blue-blind)

#0A4144

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #243b54;
/* rgb */ color: rgb(36, 59, 84);
/* oklch */ color: oklch(34.5% 0.053 251.5);

Tailwind

colors: {
  custom: {
    50: '#627084',
    500: '#243b54',
    950: '#000000',
  },
}

SCSS

$custom: #243b54;
$custom-light: #627084;
$custom-dark: #000000;

JSON

{
  "hex": "#243b54",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 84
  },
  "hsl": {
    "h": 211.25,
    "s": 40,
    "l": 23.529
  },
  "oklch": {
    "l": 0.34546,
    "c": 0.05278,
    "h": 251.5
  },
  "luminance": 0.04143
}

Semantic roles & 50–950 ramp

primary

#243B54

secondary

#886B4C

accent

#9658D0

background

#F6F6F8

surface

#EBECEF

border

#C6C7CA

text

#05070B

muted

#7A7A7C

Preview Lab

Preview with #243B54

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

Preview Lab → · Contrast checker → · Palette generator →